proteaaudio 0.9.4 → 0.10.0
raw patch · 13 files changed
+3384/−14 lines, 13 filesPVP ok
version bump matches the API change (PVP)
API changes (from Hackage documentation)
+ Sound.ProteaAudio: sampleFromMemoryMp3 :: ByteString -> Float -> IO Sample
- Sound.ProteaAudio: soundUpdate :: Sound -> Float -> Float -> Float -> Float -> IO Bool
+ Sound.ProteaAudio: soundUpdate :: Sound -> Bool -> Float -> Float -> Float -> Float -> IO Bool
Files
- CHANGELOG.md +5/−0
- README.md +8/−0
- Sound/ProteaAudio.chs +36/−5
- cbits/minimp3.h +1865/−0
- cbits/minimp3_ex.h +1397/−0
- cbits/proAudio.cpp +19/−0
- cbits/proAudio.h +1/−1
- cbits/proAudioRt.cpp +8/−2
- cbits/proAudioRt.h +1/−1
- cbits/proteaaudio_binding.cpp +31/−2
- cbits/proteaaudio_binding.h +2/−1
- example/play.hs +7/−0
- proteaaudio.cabal +4/−2
CHANGELOG.md view
@@ -1,3 +1,8 @@+# 0.10.0+- add MP3 support+- add pause support: soundUpdate takes a Bool (is paused) parameter+- sampleFromMemory autodetects audio format+ # 0.9.4 - fix PulseAudio default output device detection
README.md view
@@ -9,6 +9,7 @@ Supported audio formats: - Wav - Ogg+- Mp3 - Raw linear PCM Samples can be loaded from file or memory.@@ -76,6 +77,12 @@ threadDelay $ 3 * oneSec soundStop sndTrkB soundActive sndTrkB >>= print++ soundUpdate sndTrkA True 1 1 0 1+ putStrLn "pause sound, press enter to continue"+ getLine+ soundUpdate sndTrkA False 1 1 0 1+ -- wait sndTrkA to finish waitPlayback @@ -84,6 +91,7 @@ sampleB <- case takeExtension filename of ".ogg" -> sampleFromMemoryOgg buffer 1.0 ".wav" -> sampleFromMemoryWav buffer 1.0+ ".mp3" -> sampleFromMemoryMp3 buffer 1.0 soundPlay sampleB 1 1 0 1 -- left volume, right volume, time difference between left and right, pitch factor for playback waitPlayback
Sound/ProteaAudio.chs view
@@ -1,4 +1,6 @@-{-#LANGUAGE ForeignFunctionInterface,CPP#-}+{-#LANGUAGE ForeignFunctionInterface #-}+{-#LANGUAGE OverloadedStrings #-}+{-#LANGUAGE CPP #-} #include "proteaaudio_binding.h" #if defined PROTEAAUDIO_SDL@@ -38,6 +40,7 @@ sampleFromMemoryPcm, sampleFromMemoryWav, sampleFromMemoryOgg,+ sampleFromMemoryMp3, sampleFromFile, sampleDestroy, @@ -53,7 +56,8 @@ import Foreign import Foreign.C-import Data.ByteString (ByteString, useAsCStringLen)+import Data.ByteString (ByteString)+import qualified Data.ByteString as BS -- | Audio sample resource handle. A sample can be shared between multiple Sound tracks. (abstraction for data) newtype Sample = Sample{ fromSample :: {#type sample_t#} }@@ -109,6 +113,14 @@ } -> `Sample' Sample -- ^ returns handle #} +-- | Loads mp3 sound sample from memory buffer.+{#fun _sampleFromMemoryMp3+ { id `Ptr CChar' -- ^ memory buffer pointer+ , `Int' -- ^ memory buffer size in bytes+ , `Float' -- ^ volume+ } -> `Sample' Sample -- ^ returns handle+#}+ -- | Loads raw linear pcm sound sample from memory buffer. sampleFromMemoryPcm :: ByteString -- ^ pcm sample data; array of pcm samples (signed 8 bit int, signed 16 bit int or 32 bit float) -> Int -- ^ number of channels, e.g. 1 for mono, 2 for stereo.@@ -117,20 +129,38 @@ -> Float -- ^ volume -> IO Sample -- ^ return sample handle sampleFromMemoryPcm pcmData channels sampleRate bitsPerSample volume =- useAsCStringLen pcmData $ \(ptr, size) -> _sampleFromMemoryPcm ptr size channels sampleRate bitsPerSample volume+ BS.useAsCStringLen pcmData $ \(ptr, size) -> _sampleFromMemoryPcm ptr size channels sampleRate bitsPerSample volume -- | Loads wav sound sample from memory buffer. sampleFromMemoryWav :: ByteString -- ^ wav sample data -> Float -- ^ volume -> IO Sample -- ^ return sample handle-sampleFromMemoryWav wavData volume = useAsCStringLen wavData $ \(ptr, size) -> _sampleFromMemoryWav ptr size volume+sampleFromMemoryWav wavData volume = BS.useAsCStringLen wavData $ \(ptr, size) -> _sampleFromMemoryWav ptr size volume -- | Loads ogg sound sample from memory buffer. sampleFromMemoryOgg :: ByteString -- ^ ogg sample data -> Float -- ^ volume -> IO Sample -- ^ return sample handle-sampleFromMemoryOgg oggData volume = useAsCStringLen oggData $ \(ptr, size) -> _sampleFromMemoryOgg ptr size volume+sampleFromMemoryOgg oggData volume = BS.useAsCStringLen oggData $ \(ptr, size) -> _sampleFromMemoryOgg ptr size volume +-- | Loads mp3 sound sample from memory buffer.+sampleFromMemoryMp3 :: ByteString -- ^ mp3 sample data+ -> Float -- ^ volume+ -> IO Sample -- ^ return sample handle+sampleFromMemoryMp3 mp3Data volume = BS.useAsCStringLen mp3Data $ \(ptr, size) -> _sampleFromMemoryMp3 ptr size volume++-- | Loads wav, ogg or mp3 sound sample from memory buffer (autodetects audio format).+sampleFromMemory :: ByteString -> Float -> IO Sample+sampleFromMemory bs volume+ | BS.take 4 bs == "RIFF"+ = sampleFromMemoryWav bs volume+ | BS.take 4 bs == "OggS"+ = sampleFromMemoryOgg bs volume+ | BS.take 3 bs == "ID3" || BS.take 2 bs `elem` ["\xFF\xFB", "\xFF\xF3", "\xFF\xF2"]+ = sampleFromMemoryMp3 bs volume+ | otherwise+ = error "Could not detect audio format"+ -- | Loads a sound sample from file. {#fun sampleFromFile { `String' -- ^ sample filepath@@ -199,6 +229,7 @@ -- | Updates parameters of a specified sound. {#fun soundUpdate { fromSound `Sound' -- ^ handle of a currently active sound (if sound has stopped, this is a no-op)+ , `Bool' -- ^ is paused state, this does not change the sound active state , `Float' -- ^ left volume , `Float' -- ^ right volume , `Float' -- ^ time difference between left and right channel in seconds. Use negative values to specify a delay for the left channel, positive for the right
+ cbits/minimp3.h view
@@ -0,0 +1,1865 @@+#ifndef MINIMP3_H+#define MINIMP3_H+/*+ https://github.com/lieff/minimp3+ To the extent possible under law, the author(s) have dedicated all copyright and related and neighboring rights to this software to the public domain worldwide.+ This software is distributed without any warranty.+ See <http://creativecommons.org/publicdomain/zero/1.0/>.+*/+#include <stdint.h>++#define MINIMP3_MAX_SAMPLES_PER_FRAME (1152*2)++typedef struct+{+ int frame_bytes, frame_offset, channels, hz, layer, bitrate_kbps;+} mp3dec_frame_info_t;++typedef struct+{+ float mdct_overlap[2][9*32], qmf_state[15*2*32];+ int reserv, free_format_bytes;+ unsigned char header[4], reserv_buf[511];+} mp3dec_t;++#ifdef __cplusplus+extern "C" {+#endif /* __cplusplus */++void mp3dec_init(mp3dec_t *dec);+#ifndef MINIMP3_FLOAT_OUTPUT+typedef int16_t mp3d_sample_t;+#else /* MINIMP3_FLOAT_OUTPUT */+typedef float mp3d_sample_t;+void mp3dec_f32_to_s16(const float *in, int16_t *out, int num_samples);+#endif /* MINIMP3_FLOAT_OUTPUT */+int mp3dec_decode_frame(mp3dec_t *dec, const uint8_t *mp3, int mp3_bytes, mp3d_sample_t *pcm, mp3dec_frame_info_t *info);++#ifdef __cplusplus+}+#endif /* __cplusplus */++#endif /* MINIMP3_H */+#if defined(MINIMP3_IMPLEMENTATION) && !defined(_MINIMP3_IMPLEMENTATION_GUARD)+#define _MINIMP3_IMPLEMENTATION_GUARD++#include <stdlib.h>+#include <string.h>++#define MAX_FREE_FORMAT_FRAME_SIZE 2304 /* more than ISO spec's */+#ifndef MAX_FRAME_SYNC_MATCHES+#define MAX_FRAME_SYNC_MATCHES 10+#endif /* MAX_FRAME_SYNC_MATCHES */++#define MAX_L3_FRAME_PAYLOAD_BYTES MAX_FREE_FORMAT_FRAME_SIZE /* MUST be >= 320000/8/32000*1152 = 1440 */++#define MAX_BITRESERVOIR_BYTES 511+#define SHORT_BLOCK_TYPE 2+#define STOP_BLOCK_TYPE 3+#define MODE_MONO 3+#define MODE_JOINT_STEREO 1+#define HDR_SIZE 4+#define HDR_IS_MONO(h) (((h[3]) & 0xC0) == 0xC0)+#define HDR_IS_MS_STEREO(h) (((h[3]) & 0xE0) == 0x60)+#define HDR_IS_FREE_FORMAT(h) (((h[2]) & 0xF0) == 0)+#define HDR_IS_CRC(h) (!((h[1]) & 1))+#define HDR_TEST_PADDING(h) ((h[2]) & 0x2)+#define HDR_TEST_MPEG1(h) ((h[1]) & 0x8)+#define HDR_TEST_NOT_MPEG25(h) ((h[1]) & 0x10)+#define HDR_TEST_I_STEREO(h) ((h[3]) & 0x10)+#define HDR_TEST_MS_STEREO(h) ((h[3]) & 0x20)+#define HDR_GET_STEREO_MODE(h) (((h[3]) >> 6) & 3)+#define HDR_GET_STEREO_MODE_EXT(h) (((h[3]) >> 4) & 3)+#define HDR_GET_LAYER(h) (((h[1]) >> 1) & 3)+#define HDR_GET_BITRATE(h) ((h[2]) >> 4)+#define HDR_GET_SAMPLE_RATE(h) (((h[2]) >> 2) & 3)+#define HDR_GET_MY_SAMPLE_RATE(h) (HDR_GET_SAMPLE_RATE(h) + (((h[1] >> 3) & 1) + ((h[1] >> 4) & 1))*3)+#define HDR_IS_FRAME_576(h) ((h[1] & 14) == 2)+#define HDR_IS_LAYER_1(h) ((h[1] & 6) == 6)++#define BITS_DEQUANTIZER_OUT -1+#define MAX_SCF (255 + BITS_DEQUANTIZER_OUT*4 - 210)+#define MAX_SCFI ((MAX_SCF + 3) & ~3)++#define MINIMP3_MIN(a, b) ((a) > (b) ? (b) : (a))+#define MINIMP3_MAX(a, b) ((a) < (b) ? (b) : (a))++#if !defined(MINIMP3_NO_SIMD)++#if !defined(MINIMP3_ONLY_SIMD) && (defined(_M_X64) || defined(__x86_64__) || defined(__aarch64__) || defined(_M_ARM64))+/* x64 always have SSE2, arm64 always have neon, no need for generic code */+#define MINIMP3_ONLY_SIMD+#endif /* SIMD checks... */++#if (defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))) || ((defined(__i386__) || defined(__x86_64__)) && defined(__SSE2__))+#if defined(_MSC_VER)+#include <intrin.h>+#endif /* defined(_MSC_VER) */+#include <immintrin.h>+#define HAVE_SSE 1+#define HAVE_SIMD 1+#define VSTORE _mm_storeu_ps+#define VLD _mm_loadu_ps+#define VSET _mm_set1_ps+#define VADD _mm_add_ps+#define VSUB _mm_sub_ps+#define VMUL _mm_mul_ps+#define VMAC(a, x, y) _mm_add_ps(a, _mm_mul_ps(x, y))+#define VMSB(a, x, y) _mm_sub_ps(a, _mm_mul_ps(x, y))+#define VMUL_S(x, s) _mm_mul_ps(x, _mm_set1_ps(s))+#define VREV(x) _mm_shuffle_ps(x, x, _MM_SHUFFLE(0, 1, 2, 3))+typedef __m128 f4;+#if defined(_MSC_VER) || defined(MINIMP3_ONLY_SIMD)+#define minimp3_cpuid __cpuid+#else /* defined(_MSC_VER) || defined(MINIMP3_ONLY_SIMD) */+static __inline__ __attribute__((always_inline)) void minimp3_cpuid(int CPUInfo[], const int InfoType)+{+#if defined(__PIC__)+ __asm__ __volatile__(+#if defined(__x86_64__)+ "push %%rbx\n"+ "cpuid\n"+ "xchgl %%ebx, %1\n"+ "pop %%rbx\n"+#else /* defined(__x86_64__) */+ "xchgl %%ebx, %1\n"+ "cpuid\n"+ "xchgl %%ebx, %1\n"+#endif /* defined(__x86_64__) */+ : "=a" (CPUInfo[0]), "=r" (CPUInfo[1]), "=c" (CPUInfo[2]), "=d" (CPUInfo[3])+ : "a" (InfoType));+#else /* defined(__PIC__) */+ __asm__ __volatile__(+ "cpuid"+ : "=a" (CPUInfo[0]), "=b" (CPUInfo[1]), "=c" (CPUInfo[2]), "=d" (CPUInfo[3])+ : "a" (InfoType));+#endif /* defined(__PIC__)*/+}+#endif /* defined(_MSC_VER) || defined(MINIMP3_ONLY_SIMD) */+static int have_simd(void)+{+#ifdef MINIMP3_ONLY_SIMD+ return 1;+#else /* MINIMP3_ONLY_SIMD */+ static int g_have_simd;+ int CPUInfo[4];+#ifdef MINIMP3_TEST+ static int g_counter;+ if (g_counter++ > 100)+ return 0;+#endif /* MINIMP3_TEST */+ if (g_have_simd)+ goto end;+ minimp3_cpuid(CPUInfo, 0);+ g_have_simd = 1;+ if (CPUInfo[0] > 0)+ {+ minimp3_cpuid(CPUInfo, 1);+ g_have_simd = (CPUInfo[3] & (1 << 26)) + 1; /* SSE2 */+ }+end:+ return g_have_simd - 1;+#endif /* MINIMP3_ONLY_SIMD */+}+#elif defined(__ARM_NEON) || defined(__aarch64__) || defined(_M_ARM64)+#include <arm_neon.h>+#define HAVE_SSE 0+#define HAVE_SIMD 1+#define VSTORE vst1q_f32+#define VLD vld1q_f32+#define VSET vmovq_n_f32+#define VADD vaddq_f32+#define VSUB vsubq_f32+#define VMUL vmulq_f32+#define VMAC(a, x, y) vmlaq_f32(a, x, y)+#define VMSB(a, x, y) vmlsq_f32(a, x, y)+#define VMUL_S(x, s) vmulq_f32(x, vmovq_n_f32(s))+#define VREV(x) vcombine_f32(vget_high_f32(vrev64q_f32(x)), vget_low_f32(vrev64q_f32(x)))+typedef float32x4_t f4;+static int have_simd()+{ /* TODO: detect neon for !MINIMP3_ONLY_SIMD */+ return 1;+}+#else /* SIMD checks... */+#define HAVE_SSE 0+#define HAVE_SIMD 0+#ifdef MINIMP3_ONLY_SIMD+#error MINIMP3_ONLY_SIMD used, but SSE/NEON not enabled+#endif /* MINIMP3_ONLY_SIMD */+#endif /* SIMD checks... */+#else /* !defined(MINIMP3_NO_SIMD) */+#define HAVE_SIMD 0+#endif /* !defined(MINIMP3_NO_SIMD) */++#if defined(__ARM_ARCH) && (__ARM_ARCH >= 6) && !defined(__aarch64__) && !defined(_M_ARM64)+#define HAVE_ARMV6 1+static __inline__ __attribute__((always_inline)) int32_t minimp3_clip_int16_arm(int32_t a)+{+ int32_t x = 0;+ __asm__ ("ssat %0, #16, %1" : "=r"(x) : "r"(a));+ return x;+}+#else+#define HAVE_ARMV6 0+#endif++typedef struct+{+ const uint8_t *buf;+ int pos, limit;+} bs_t;++typedef struct+{+ float scf[3*64];+ uint8_t total_bands, stereo_bands, bitalloc[64], scfcod[64];+} L12_scale_info;++typedef struct+{+ uint8_t tab_offset, code_tab_width, band_count;+} L12_subband_alloc_t;++typedef struct+{+ const uint8_t *sfbtab;+ uint16_t part_23_length, big_values, scalefac_compress;+ uint8_t global_gain, block_type, mixed_block_flag, n_long_sfb, n_short_sfb;+ uint8_t table_select[3], region_count[3], subblock_gain[3];+ uint8_t preflag, scalefac_scale, count1_table, scfsi;+} L3_gr_info_t;++typedef struct+{+ bs_t bs;+ uint8_t maindata[MAX_BITRESERVOIR_BYTES + MAX_L3_FRAME_PAYLOAD_BYTES];+ L3_gr_info_t gr_info[4];+ float grbuf[2][576], scf[40], syn[18 + 15][2*32];+ uint8_t ist_pos[2][39];+} mp3dec_scratch_t;++static void bs_init(bs_t *bs, const uint8_t *data, int bytes)+{+ bs->buf = data;+ bs->pos = 0;+ bs->limit = bytes*8;+}++static uint32_t get_bits(bs_t *bs, int n)+{+ uint32_t next, cache = 0, s = bs->pos & 7;+ int shl = n + s;+ const uint8_t *p = bs->buf + (bs->pos >> 3);+ if ((bs->pos += n) > bs->limit)+ return 0;+ next = *p++ & (255 >> s);+ while ((shl -= 8) > 0)+ {+ cache |= next << shl;+ next = *p++;+ }+ return cache | (next >> -shl);+}++static int hdr_valid(const uint8_t *h)+{+ return h[0] == 0xff &&+ ((h[1] & 0xF0) == 0xf0 || (h[1] & 0xFE) == 0xe2) &&+ (HDR_GET_LAYER(h) != 0) &&+ (HDR_GET_BITRATE(h) != 15) &&+ (HDR_GET_SAMPLE_RATE(h) != 3);+}++static int hdr_compare(const uint8_t *h1, const uint8_t *h2)+{+ return hdr_valid(h2) &&+ ((h1[1] ^ h2[1]) & 0xFE) == 0 &&+ ((h1[2] ^ h2[2]) & 0x0C) == 0 &&+ !(HDR_IS_FREE_FORMAT(h1) ^ HDR_IS_FREE_FORMAT(h2));+}++static unsigned hdr_bitrate_kbps(const uint8_t *h)+{+ static const uint8_t halfrate[2][3][15] = {+ { { 0,4,8,12,16,20,24,28,32,40,48,56,64,72,80 }, { 0,4,8,12,16,20,24,28,32,40,48,56,64,72,80 }, { 0,16,24,28,32,40,48,56,64,72,80,88,96,112,128 } },+ { { 0,16,20,24,28,32,40,48,56,64,80,96,112,128,160 }, { 0,16,24,28,32,40,48,56,64,80,96,112,128,160,192 }, { 0,16,32,48,64,80,96,112,128,144,160,176,192,208,224 } },+ };+ return 2*halfrate[!!HDR_TEST_MPEG1(h)][HDR_GET_LAYER(h) - 1][HDR_GET_BITRATE(h)];+}++static unsigned hdr_sample_rate_hz(const uint8_t *h)+{+ static const unsigned g_hz[3] = { 44100, 48000, 32000 };+ return g_hz[HDR_GET_SAMPLE_RATE(h)] >> (int)!HDR_TEST_MPEG1(h) >> (int)!HDR_TEST_NOT_MPEG25(h);+}++static unsigned hdr_frame_samples(const uint8_t *h)+{+ return HDR_IS_LAYER_1(h) ? 384 : (1152 >> (int)HDR_IS_FRAME_576(h));+}++static int hdr_frame_bytes(const uint8_t *h, int free_format_size)+{+ int frame_bytes = hdr_frame_samples(h)*hdr_bitrate_kbps(h)*125/hdr_sample_rate_hz(h);+ if (HDR_IS_LAYER_1(h))+ {+ frame_bytes &= ~3; /* slot align */+ }+ return frame_bytes ? frame_bytes : free_format_size;+}++static int hdr_padding(const uint8_t *h)+{+ return HDR_TEST_PADDING(h) ? (HDR_IS_LAYER_1(h) ? 4 : 1) : 0;+}++#ifndef MINIMP3_ONLY_MP3+static const L12_subband_alloc_t *L12_subband_alloc_table(const uint8_t *hdr, L12_scale_info *sci)+{+ const L12_subband_alloc_t *alloc;+ int mode = HDR_GET_STEREO_MODE(hdr);+ int nbands, stereo_bands = (mode == MODE_MONO) ? 0 : (mode == MODE_JOINT_STEREO) ? (HDR_GET_STEREO_MODE_EXT(hdr) << 2) + 4 : 32;++ if (HDR_IS_LAYER_1(hdr))+ {+ static const L12_subband_alloc_t g_alloc_L1[] = { { 76, 4, 32 } };+ alloc = g_alloc_L1;+ nbands = 32;+ } else if (!HDR_TEST_MPEG1(hdr))+ {+ static const L12_subband_alloc_t g_alloc_L2M2[] = { { 60, 4, 4 }, { 44, 3, 7 }, { 44, 2, 19 } };+ alloc = g_alloc_L2M2;+ nbands = 30;+ } else+ {+ static const L12_subband_alloc_t g_alloc_L2M1[] = { { 0, 4, 3 }, { 16, 4, 8 }, { 32, 3, 12 }, { 40, 2, 7 } };+ int sample_rate_idx = HDR_GET_SAMPLE_RATE(hdr);+ unsigned kbps = hdr_bitrate_kbps(hdr) >> (int)(mode != MODE_MONO);+ if (!kbps) /* free-format */+ {+ kbps = 192;+ }++ alloc = g_alloc_L2M1;+ nbands = 27;+ if (kbps < 56)+ {+ static const L12_subband_alloc_t g_alloc_L2M1_lowrate[] = { { 44, 4, 2 }, { 44, 3, 10 } };+ alloc = g_alloc_L2M1_lowrate;+ nbands = sample_rate_idx == 2 ? 12 : 8;+ } else if (kbps >= 96 && sample_rate_idx != 1)+ {+ nbands = 30;+ }+ }++ sci->total_bands = (uint8_t)nbands;+ sci->stereo_bands = (uint8_t)MINIMP3_MIN(stereo_bands, nbands);++ return alloc;+}++static void L12_read_scalefactors(bs_t *bs, uint8_t *pba, uint8_t *scfcod, int bands, float *scf)+{+ static const float g_deq_L12[18*3] = {+#define DQ(x) 9.53674316e-07f/x, 7.56931807e-07f/x, 6.00777173e-07f/x+ DQ(3),DQ(7),DQ(15),DQ(31),DQ(63),DQ(127),DQ(255),DQ(511),DQ(1023),DQ(2047),DQ(4095),DQ(8191),DQ(16383),DQ(32767),DQ(65535),DQ(3),DQ(5),DQ(9)+ };+ int i, m;+ for (i = 0; i < bands; i++)+ {+ float s = 0;+ int ba = *pba++;+ int mask = ba ? 4 + ((19 >> scfcod[i]) & 3) : 0;+ for (m = 4; m; m >>= 1)+ {+ if (mask & m)+ {+ int b = get_bits(bs, 6);+ s = g_deq_L12[ba*3 - 6 + b % 3]*(1 << 21 >> b/3);+ }+ *scf++ = s;+ }+ }+}++static void L12_read_scale_info(const uint8_t *hdr, bs_t *bs, L12_scale_info *sci)+{+ static const uint8_t g_bitalloc_code_tab[] = {+ 0,17, 3, 4, 5,6,7, 8,9,10,11,12,13,14,15,16,+ 0,17,18, 3,19,4,5, 6,7, 8, 9,10,11,12,13,16,+ 0,17,18, 3,19,4,5,16,+ 0,17,18,16,+ 0,17,18,19, 4,5,6, 7,8, 9,10,11,12,13,14,15,+ 0,17,18, 3,19,4,5, 6,7, 8, 9,10,11,12,13,14,+ 0, 2, 3, 4, 5,6,7, 8,9,10,11,12,13,14,15,16+ };+ const L12_subband_alloc_t *subband_alloc = L12_subband_alloc_table(hdr, sci);++ int i, k = 0, ba_bits = 0;+ const uint8_t *ba_code_tab = g_bitalloc_code_tab;++ for (i = 0; i < sci->total_bands; i++)+ {+ uint8_t ba;+ if (i == k)+ {+ k += subband_alloc->band_count;+ ba_bits = subband_alloc->code_tab_width;+ ba_code_tab = g_bitalloc_code_tab + subband_alloc->tab_offset;+ subband_alloc++;+ }+ ba = ba_code_tab[get_bits(bs, ba_bits)];+ sci->bitalloc[2*i] = ba;+ if (i < sci->stereo_bands)+ {+ ba = ba_code_tab[get_bits(bs, ba_bits)];+ }+ sci->bitalloc[2*i + 1] = sci->stereo_bands ? ba : 0;+ }++ for (i = 0; i < 2*sci->total_bands; i++)+ {+ sci->scfcod[i] = sci->bitalloc[i] ? HDR_IS_LAYER_1(hdr) ? 2 : get_bits(bs, 2) : 6;+ }++ L12_read_scalefactors(bs, sci->bitalloc, sci->scfcod, sci->total_bands*2, sci->scf);++ for (i = sci->stereo_bands; i < sci->total_bands; i++)+ {+ sci->bitalloc[2*i + 1] = 0;+ }+}++static int L12_dequantize_granule(float *grbuf, bs_t *bs, L12_scale_info *sci, int group_size)+{+ int i, j, k, choff = 576;+ for (j = 0; j < 4; j++)+ {+ float *dst = grbuf + group_size*j;+ for (i = 0; i < 2*sci->total_bands; i++)+ {+ int ba = sci->bitalloc[i];+ if (ba != 0)+ {+ if (ba < 17)+ {+ int half = (1 << (ba - 1)) - 1;+ for (k = 0; k < group_size; k++)+ {+ dst[k] = (float)((int)get_bits(bs, ba) - half);+ }+ } else+ {+ unsigned mod = (2 << (ba - 17)) + 1; /* 3, 5, 9 */+ unsigned code = get_bits(bs, mod + 2 - (mod >> 3)); /* 5, 7, 10 */+ for (k = 0; k < group_size; k++, code /= mod)+ {+ dst[k] = (float)((int)(code % mod - mod/2));+ }+ }+ }+ dst += choff;+ choff = 18 - choff;+ }+ }+ return group_size*4;+}++static void L12_apply_scf_384(L12_scale_info *sci, const float *scf, float *dst)+{+ int i, k;+ memcpy(dst + 576 + sci->stereo_bands*18, dst + sci->stereo_bands*18, (sci->total_bands - sci->stereo_bands)*18*sizeof(float));+ for (i = 0; i < sci->total_bands; i++, dst += 18, scf += 6)+ {+ for (k = 0; k < 12; k++)+ {+ dst[k + 0] *= scf[0];+ dst[k + 576] *= scf[3];+ }+ }+}+#endif /* MINIMP3_ONLY_MP3 */++static int L3_read_side_info(bs_t *bs, L3_gr_info_t *gr, const uint8_t *hdr)+{+ static const uint8_t g_scf_long[8][23] = {+ { 6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54,0 },+ { 12,12,12,12,12,12,16,20,24,28,32,40,48,56,64,76,90,2,2,2,2,2,0 },+ { 6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54,0 },+ { 6,6,6,6,6,6,8,10,12,14,16,18,22,26,32,38,46,54,62,70,76,36,0 },+ { 6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54,0 },+ { 4,4,4,4,4,4,6,6,8,8,10,12,16,20,24,28,34,42,50,54,76,158,0 },+ { 4,4,4,4,4,4,6,6,6,8,10,12,16,18,22,28,34,40,46,54,54,192,0 },+ { 4,4,4,4,4,4,6,6,8,10,12,16,20,24,30,38,46,56,68,84,102,26,0 }+ };+ static const uint8_t g_scf_short[8][40] = {+ { 4,4,4,4,4,4,4,4,4,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,24,24,24,30,30,30,40,40,40,18,18,18,0 },+ { 8,8,8,8,8,8,8,8,8,12,12,12,16,16,16,20,20,20,24,24,24,28,28,28,36,36,36,2,2,2,2,2,2,2,2,2,26,26,26,0 },+ { 4,4,4,4,4,4,4,4,4,6,6,6,6,6,6,8,8,8,10,10,10,14,14,14,18,18,18,26,26,26,32,32,32,42,42,42,18,18,18,0 },+ { 4,4,4,4,4,4,4,4,4,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,24,24,24,32,32,32,44,44,44,12,12,12,0 },+ { 4,4,4,4,4,4,4,4,4,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,24,24,24,30,30,30,40,40,40,18,18,18,0 },+ { 4,4,4,4,4,4,4,4,4,4,4,4,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,22,22,22,30,30,30,56,56,56,0 },+ { 4,4,4,4,4,4,4,4,4,4,4,4,6,6,6,6,6,6,10,10,10,12,12,12,14,14,14,16,16,16,20,20,20,26,26,26,66,66,66,0 },+ { 4,4,4,4,4,4,4,4,4,4,4,4,6,6,6,8,8,8,12,12,12,16,16,16,20,20,20,26,26,26,34,34,34,42,42,42,12,12,12,0 }+ };+ static const uint8_t g_scf_mixed[8][40] = {+ { 6,6,6,6,6,6,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,24,24,24,30,30,30,40,40,40,18,18,18,0 },+ { 12,12,12,4,4,4,8,8,8,12,12,12,16,16,16,20,20,20,24,24,24,28,28,28,36,36,36,2,2,2,2,2,2,2,2,2,26,26,26,0 },+ { 6,6,6,6,6,6,6,6,6,6,6,6,8,8,8,10,10,10,14,14,14,18,18,18,26,26,26,32,32,32,42,42,42,18,18,18,0 },+ { 6,6,6,6,6,6,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,24,24,24,32,32,32,44,44,44,12,12,12,0 },+ { 6,6,6,6,6,6,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,24,24,24,30,30,30,40,40,40,18,18,18,0 },+ { 4,4,4,4,4,4,6,6,4,4,4,6,6,6,8,8,8,10,10,10,12,12,12,14,14,14,18,18,18,22,22,22,30,30,30,56,56,56,0 },+ { 4,4,4,4,4,4,6,6,4,4,4,6,6,6,6,6,6,10,10,10,12,12,12,14,14,14,16,16,16,20,20,20,26,26,26,66,66,66,0 },+ { 4,4,4,4,4,4,6,6,4,4,4,6,6,6,8,8,8,12,12,12,16,16,16,20,20,20,26,26,26,34,34,34,42,42,42,12,12,12,0 }+ };++ unsigned tables, scfsi = 0;+ int main_data_begin, part_23_sum = 0;+ int sr_idx = HDR_GET_MY_SAMPLE_RATE(hdr); sr_idx -= (sr_idx != 0);+ int gr_count = HDR_IS_MONO(hdr) ? 1 : 2;++ if (HDR_TEST_MPEG1(hdr))+ {+ gr_count *= 2;+ main_data_begin = get_bits(bs, 9);+ scfsi = get_bits(bs, 7 + gr_count);+ } else+ {+ main_data_begin = get_bits(bs, 8 + gr_count) >> gr_count;+ }++ do+ {+ if (HDR_IS_MONO(hdr))+ {+ scfsi <<= 4;+ }+ gr->part_23_length = (uint16_t)get_bits(bs, 12);+ part_23_sum += gr->part_23_length;+ gr->big_values = (uint16_t)get_bits(bs, 9);+ if (gr->big_values > 288)+ {+ return -1;+ }+ gr->global_gain = (uint8_t)get_bits(bs, 8);+ gr->scalefac_compress = (uint16_t)get_bits(bs, HDR_TEST_MPEG1(hdr) ? 4 : 9);+ gr->sfbtab = g_scf_long[sr_idx];+ gr->n_long_sfb = 22;+ gr->n_short_sfb = 0;+ if (get_bits(bs, 1))+ {+ gr->block_type = (uint8_t)get_bits(bs, 2);+ if (!gr->block_type)+ {+ return -1;+ }+ gr->mixed_block_flag = (uint8_t)get_bits(bs, 1);+ gr->region_count[0] = 7;+ gr->region_count[1] = 255;+ if (gr->block_type == SHORT_BLOCK_TYPE)+ {+ scfsi &= 0x0F0F;+ if (!gr->mixed_block_flag)+ {+ gr->region_count[0] = 8;+ gr->sfbtab = g_scf_short[sr_idx];+ gr->n_long_sfb = 0;+ gr->n_short_sfb = 39;+ } else+ {+ gr->sfbtab = g_scf_mixed[sr_idx];+ gr->n_long_sfb = HDR_TEST_MPEG1(hdr) ? 8 : 6;+ gr->n_short_sfb = 30;+ }+ }+ tables = get_bits(bs, 10);+ tables <<= 5;+ gr->subblock_gain[0] = (uint8_t)get_bits(bs, 3);+ gr->subblock_gain[1] = (uint8_t)get_bits(bs, 3);+ gr->subblock_gain[2] = (uint8_t)get_bits(bs, 3);+ } else+ {+ gr->block_type = 0;+ gr->mixed_block_flag = 0;+ tables = get_bits(bs, 15);+ gr->region_count[0] = (uint8_t)get_bits(bs, 4);+ gr->region_count[1] = (uint8_t)get_bits(bs, 3);+ gr->region_count[2] = 255;+ }+ gr->table_select[0] = (uint8_t)(tables >> 10);+ gr->table_select[1] = (uint8_t)((tables >> 5) & 31);+ gr->table_select[2] = (uint8_t)((tables) & 31);+ gr->preflag = HDR_TEST_MPEG1(hdr) ? get_bits(bs, 1) : (gr->scalefac_compress >= 500);+ gr->scalefac_scale = (uint8_t)get_bits(bs, 1);+ gr->count1_table = (uint8_t)get_bits(bs, 1);+ gr->scfsi = (uint8_t)((scfsi >> 12) & 15);+ scfsi <<= 4;+ gr++;+ } while(--gr_count);++ if (part_23_sum + bs->pos > bs->limit + main_data_begin*8)+ {+ return -1;+ }++ return main_data_begin;+}++static void L3_read_scalefactors(uint8_t *scf, uint8_t *ist_pos, const uint8_t *scf_size, const uint8_t *scf_count, bs_t *bitbuf, int scfsi)+{+ int i, k;+ for (i = 0; i < 4 && scf_count[i]; i++, scfsi *= 2)+ {+ int cnt = scf_count[i];+ if (scfsi & 8)+ {+ memcpy(scf, ist_pos, cnt);+ } else+ {+ int bits = scf_size[i];+ if (!bits)+ {+ memset(scf, 0, cnt);+ memset(ist_pos, 0, cnt);+ } else+ {+ int max_scf = (scfsi < 0) ? (1 << bits) - 1 : -1;+ for (k = 0; k < cnt; k++)+ {+ int s = get_bits(bitbuf, bits);+ ist_pos[k] = (s == max_scf ? -1 : s);+ scf[k] = s;+ }+ }+ }+ ist_pos += cnt;+ scf += cnt;+ }+ scf[0] = scf[1] = scf[2] = 0;+}++static float L3_ldexp_q2(float y, int exp_q2)+{+ static const float g_expfrac[4] = { 9.31322575e-10f,7.83145814e-10f,6.58544508e-10f,5.53767716e-10f };+ int e;+ do+ {+ e = MINIMP3_MIN(30*4, exp_q2);+ y *= g_expfrac[e & 3]*(1 << 30 >> (e >> 2));+ } while ((exp_q2 -= e) > 0);+ return y;+}++static void L3_decode_scalefactors(const uint8_t *hdr, uint8_t *ist_pos, bs_t *bs, const L3_gr_info_t *gr, float *scf, int ch)+{+ static const uint8_t g_scf_partitions[3][28] = {+ { 6,5,5, 5,6,5,5,5,6,5, 7,3,11,10,0,0, 7, 7, 7,0, 6, 6,6,3, 8, 8,5,0 },+ { 8,9,6,12,6,9,9,9,6,9,12,6,15,18,0,0, 6,15,12,0, 6,12,9,6, 6,18,9,0 },+ { 9,9,6,12,9,9,9,9,9,9,12,6,18,18,0,0,12,12,12,0,12, 9,9,6,15,12,9,0 }+ };+ const uint8_t *scf_partition = g_scf_partitions[!!gr->n_short_sfb + !gr->n_long_sfb];+ uint8_t scf_size[4], iscf[40];+ int i, scf_shift = gr->scalefac_scale + 1, gain_exp, scfsi = gr->scfsi;+ float gain;++ if (HDR_TEST_MPEG1(hdr))+ {+ static const uint8_t g_scfc_decode[16] = { 0,1,2,3, 12,5,6,7, 9,10,11,13, 14,15,18,19 };+ int part = g_scfc_decode[gr->scalefac_compress];+ scf_size[1] = scf_size[0] = (uint8_t)(part >> 2);+ scf_size[3] = scf_size[2] = (uint8_t)(part & 3);+ } else+ {+ static const uint8_t g_mod[6*4] = { 5,5,4,4,5,5,4,1,4,3,1,1,5,6,6,1,4,4,4,1,4,3,1,1 };+ int k, modprod, sfc, ist = HDR_TEST_I_STEREO(hdr) && ch;+ sfc = gr->scalefac_compress >> ist;+ for (k = ist*3*4; sfc >= 0; sfc -= modprod, k += 4)+ {+ for (modprod = 1, i = 3; i >= 0; i--)+ {+ scf_size[i] = (uint8_t)(sfc / modprod % g_mod[k + i]);+ modprod *= g_mod[k + i];+ }+ }+ scf_partition += k;+ scfsi = -16;+ }+ L3_read_scalefactors(iscf, ist_pos, scf_size, scf_partition, bs, scfsi);++ if (gr->n_short_sfb)+ {+ int sh = 3 - scf_shift;+ for (i = 0; i < gr->n_short_sfb; i += 3)+ {+ iscf[gr->n_long_sfb + i + 0] += gr->subblock_gain[0] << sh;+ iscf[gr->n_long_sfb + i + 1] += gr->subblock_gain[1] << sh;+ iscf[gr->n_long_sfb + i + 2] += gr->subblock_gain[2] << sh;+ }+ } else if (gr->preflag)+ {+ static const uint8_t g_preamp[10] = { 1,1,1,1,2,2,3,3,3,2 };+ for (i = 0; i < 10; i++)+ {+ iscf[11 + i] += g_preamp[i];+ }+ }++ gain_exp = gr->global_gain + BITS_DEQUANTIZER_OUT*4 - 210 - (HDR_IS_MS_STEREO(hdr) ? 2 : 0);+ gain = L3_ldexp_q2(1 << (MAX_SCFI/4), MAX_SCFI - gain_exp);+ for (i = 0; i < (int)(gr->n_long_sfb + gr->n_short_sfb); i++)+ {+ scf[i] = L3_ldexp_q2(gain, iscf[i] << scf_shift);+ }+}++static const float g_pow43[129 + 16] = {+ 0,-1,-2.519842f,-4.326749f,-6.349604f,-8.549880f,-10.902724f,-13.390518f,-16.000000f,-18.720754f,-21.544347f,-24.463781f,-27.473142f,-30.567351f,-33.741992f,-36.993181f,+ 0,1,2.519842f,4.326749f,6.349604f,8.549880f,10.902724f,13.390518f,16.000000f,18.720754f,21.544347f,24.463781f,27.473142f,30.567351f,33.741992f,36.993181f,40.317474f,43.711787f,47.173345f,50.699631f,54.288352f,57.937408f,61.644865f,65.408941f,69.227979f,73.100443f,77.024898f,81.000000f,85.024491f,89.097188f,93.216975f,97.382800f,101.593667f,105.848633f,110.146801f,114.487321f,118.869381f,123.292209f,127.755065f,132.257246f,136.798076f,141.376907f,145.993119f,150.646117f,155.335327f,160.060199f,164.820202f,169.614826f,174.443577f,179.305980f,184.201575f,189.129918f,194.090580f,199.083145f,204.107210f,209.162385f,214.248292f,219.364564f,224.510845f,229.686789f,234.892058f,240.126328f,245.389280f,250.680604f,256.000000f,261.347174f,266.721841f,272.123723f,277.552547f,283.008049f,288.489971f,293.998060f,299.532071f,305.091761f,310.676898f,316.287249f,321.922592f,327.582707f,333.267377f,338.976394f,344.709550f,350.466646f,356.247482f,362.051866f,367.879608f,373.730522f,379.604427f,385.501143f,391.420496f,397.362314f,403.326427f,409.312672f,415.320884f,421.350905f,427.402579f,433.475750f,439.570269f,445.685987f,451.822757f,457.980436f,464.158883f,470.357960f,476.577530f,482.817459f,489.077615f,495.357868f,501.658090f,507.978156f,514.317941f,520.677324f,527.056184f,533.454404f,539.871867f,546.308458f,552.764065f,559.238575f,565.731879f,572.243870f,578.774440f,585.323483f,591.890898f,598.476581f,605.080431f,611.702349f,618.342238f,625.000000f,631.675540f,638.368763f,645.079578f+};++static float L3_pow_43(int x)+{+ float frac;+ int sign, mult = 256;++ if (x < 129)+ {+ return g_pow43[16 + x];+ }++ if (x < 1024)+ {+ mult = 16;+ x <<= 3;+ }++ sign = 2*x & 64;+ frac = (float)((x & 63) - sign) / ((x & ~63) + sign);+ return g_pow43[16 + ((x + sign) >> 6)]*(1.f + frac*((4.f/3) + frac*(2.f/9)))*mult;+}++static void L3_huffman(float *dst, bs_t *bs, const L3_gr_info_t *gr_info, const float *scf, int layer3gr_limit)+{+ static const int16_t tabs[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,+ 785,785,785,785,784,784,784,784,513,513,513,513,513,513,513,513,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,+ -255,1313,1298,1282,785,785,785,785,784,784,784,784,769,769,769,769,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,256,290,288,+ -255,1313,1298,1282,769,769,769,769,529,529,529,529,529,529,529,529,528,528,528,528,528,528,528,528,512,512,512,512,512,512,512,512,290,288,+ 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};+ static const uint8_t tab32[] = { 130,162,193,209,44,28,76,140,9,9,9,9,9,9,9,9,190,254,222,238,126,94,157,157,109,61,173,205 };+ static const uint8_t tab33[] = { 252,236,220,204,188,172,156,140,124,108,92,76,60,44,28,12 };+ static const int16_t tabindex[2*16] = { 0,32,64,98,0,132,180,218,292,364,426,538,648,746,0,1126,1460,1460,1460,1460,1460,1460,1460,1460,1842,1842,1842,1842,1842,1842,1842,1842 };+ static const uint8_t g_linbits[] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,2,3,4,6,8,10,13,4,5,6,7,8,9,11,13 };++#define PEEK_BITS(n) (bs_cache >> (32 - n))+#define FLUSH_BITS(n) { bs_cache <<= (n); bs_sh += (n); }+#define CHECK_BITS while (bs_sh >= 0) { bs_cache |= (uint32_t)*bs_next_ptr++ << bs_sh; bs_sh -= 8; }+#define BSPOS ((bs_next_ptr - bs->buf)*8 - 24 + bs_sh)++ float one = 0.0f;+ int ireg = 0, big_val_cnt = gr_info->big_values;+ const uint8_t *sfb = gr_info->sfbtab;+ const uint8_t *bs_next_ptr = bs->buf + bs->pos/8;+ uint32_t bs_cache = (((bs_next_ptr[0]*256u + bs_next_ptr[1])*256u + bs_next_ptr[2])*256u + bs_next_ptr[3]) << (bs->pos & 7);+ int pairs_to_decode, np, bs_sh = (bs->pos & 7) - 8;+ bs_next_ptr += 4;++ while (big_val_cnt > 0)+ {+ int tab_num = gr_info->table_select[ireg];+ int sfb_cnt = gr_info->region_count[ireg++];+ const int16_t *codebook = tabs + tabindex[tab_num];+ int linbits = g_linbits[tab_num];+ if (linbits)+ {+ do+ {+ np = *sfb++ / 2;+ pairs_to_decode = MINIMP3_MIN(big_val_cnt, np);+ one = *scf++;+ do+ {+ int j, w = 5;+ int leaf = codebook[PEEK_BITS(w)];+ while (leaf < 0)+ {+ FLUSH_BITS(w);+ w = leaf & 7;+ leaf = codebook[PEEK_BITS(w) - (leaf >> 3)];+ }+ FLUSH_BITS(leaf >> 8);++ for (j = 0; j < 2; j++, dst++, leaf >>= 4)+ {+ int lsb = leaf & 0x0F;+ if (lsb == 15)+ {+ lsb += PEEK_BITS(linbits);+ FLUSH_BITS(linbits);+ CHECK_BITS;+ *dst = one*L3_pow_43(lsb)*((int32_t)bs_cache < 0 ? -1: 1);+ } else+ {+ *dst = g_pow43[16 + lsb - 16*(bs_cache >> 31)]*one;+ }+ FLUSH_BITS(lsb ? 1 : 0);+ }+ CHECK_BITS;+ } while (--pairs_to_decode);+ } while ((big_val_cnt -= np) > 0 && --sfb_cnt >= 0);+ } else+ {+ do+ {+ np = *sfb++ / 2;+ pairs_to_decode = MINIMP3_MIN(big_val_cnt, np);+ one = *scf++;+ do+ {+ int j, w = 5;+ int leaf = codebook[PEEK_BITS(w)];+ while (leaf < 0)+ {+ FLUSH_BITS(w);+ w = leaf & 7;+ leaf = codebook[PEEK_BITS(w) - (leaf >> 3)];+ }+ FLUSH_BITS(leaf >> 8);++ for (j = 0; j < 2; j++, dst++, leaf >>= 4)+ {+ int lsb = leaf & 0x0F;+ *dst = g_pow43[16 + lsb - 16*(bs_cache >> 31)]*one;+ FLUSH_BITS(lsb ? 1 : 0);+ }+ CHECK_BITS;+ } while (--pairs_to_decode);+ } while ((big_val_cnt -= np) > 0 && --sfb_cnt >= 0);+ }+ }++ for (np = 1 - big_val_cnt;; dst += 4)+ {+ const uint8_t *codebook_count1 = (gr_info->count1_table) ? tab33 : tab32;+ int leaf = codebook_count1[PEEK_BITS(4)];+ if (!(leaf & 8))+ {+ leaf = codebook_count1[(leaf >> 3) + (bs_cache << 4 >> (32 - (leaf & 3)))];+ }+ FLUSH_BITS(leaf & 7);+ if (BSPOS > layer3gr_limit)+ {+ break;+ }+#define RELOAD_SCALEFACTOR if (!--np) { np = *sfb++/2; if (!np) break; one = *scf++; }+#define DEQ_COUNT1(s) if (leaf & (128 >> s)) { dst[s] = ((int32_t)bs_cache < 0) ? -one : one; FLUSH_BITS(1) }+ RELOAD_SCALEFACTOR;+ DEQ_COUNT1(0);+ DEQ_COUNT1(1);+ RELOAD_SCALEFACTOR;+ DEQ_COUNT1(2);+ DEQ_COUNT1(3);+ CHECK_BITS;+ }++ bs->pos = layer3gr_limit;+}++static void L3_midside_stereo(float *left, int n)+{+ int i = 0;+ float *right = left + 576;+#if HAVE_SIMD+ if (have_simd())+ {+ for (; i < n - 3; i += 4)+ {+ f4 vl = VLD(left + i);+ f4 vr = VLD(right + i);+ VSTORE(left + i, VADD(vl, vr));+ VSTORE(right + i, VSUB(vl, vr));+ }+#ifdef __GNUC__+ /* Workaround for spurious -Waggressive-loop-optimizations warning from gcc.+ * For more info see: https://github.com/lieff/minimp3/issues/88+ */+ if (__builtin_constant_p(n % 4 == 0) && n % 4 == 0)+ return;+#endif+ }+#endif /* HAVE_SIMD */+ for (; i < n; i++)+ {+ float a = left[i];+ float b = right[i];+ left[i] = a + b;+ right[i] = a - b;+ }+}++static void L3_intensity_stereo_band(float *left, int n, float kl, float kr)+{+ int i;+ for (i = 0; i < n; i++)+ {+ left[i + 576] = left[i]*kr;+ left[i] = left[i]*kl;+ }+}++static void L3_stereo_top_band(const float *right, const uint8_t *sfb, int nbands, int max_band[3])+{+ int i, k;++ max_band[0] = max_band[1] = max_band[2] = -1;++ for (i = 0; i < nbands; i++)+ {+ for (k = 0; k < sfb[i]; k += 2)+ {+ if (right[k] != 0 || right[k + 1] != 0)+ {+ max_band[i % 3] = i;+ break;+ }+ }+ right += sfb[i];+ }+}++static void L3_stereo_process(float *left, const uint8_t *ist_pos, const uint8_t *sfb, const uint8_t *hdr, int max_band[3], int mpeg2_sh)+{+ static const float g_pan[7*2] = { 0,1,0.21132487f,0.78867513f,0.36602540f,0.63397460f,0.5f,0.5f,0.63397460f,0.36602540f,0.78867513f,0.21132487f,1,0 };+ unsigned i, max_pos = HDR_TEST_MPEG1(hdr) ? 7 : 64;++ for (i = 0; sfb[i]; i++)+ {+ unsigned ipos = ist_pos[i];+ if ((int)i > max_band[i % 3] && ipos < max_pos)+ {+ float kl, kr, s = HDR_TEST_MS_STEREO(hdr) ? 1.41421356f : 1;+ if (HDR_TEST_MPEG1(hdr))+ {+ kl = g_pan[2*ipos];+ kr = g_pan[2*ipos + 1];+ } else+ {+ kl = 1;+ kr = L3_ldexp_q2(1, (ipos + 1) >> 1 << mpeg2_sh);+ if (ipos & 1)+ {+ kl = kr;+ kr = 1;+ }+ }+ L3_intensity_stereo_band(left, sfb[i], kl*s, kr*s);+ } else if (HDR_TEST_MS_STEREO(hdr))+ {+ L3_midside_stereo(left, sfb[i]);+ }+ left += sfb[i];+ }+}++static void L3_intensity_stereo(float *left, uint8_t *ist_pos, const L3_gr_info_t *gr, const uint8_t *hdr)+{+ int max_band[3], n_sfb = gr->n_long_sfb + gr->n_short_sfb;+ int i, max_blocks = gr->n_short_sfb ? 3 : 1;++ L3_stereo_top_band(left + 576, gr->sfbtab, n_sfb, max_band);+ if (gr->n_long_sfb)+ {+ max_band[0] = max_band[1] = max_band[2] = MINIMP3_MAX(MINIMP3_MAX(max_band[0], max_band[1]), max_band[2]);+ }+ for (i = 0; i < max_blocks; i++)+ {+ int default_pos = HDR_TEST_MPEG1(hdr) ? 3 : 0;+ int itop = n_sfb - max_blocks + i;+ int prev = itop - max_blocks;+ ist_pos[itop] = max_band[i] >= prev ? default_pos : ist_pos[prev];+ }+ L3_stereo_process(left, ist_pos, gr->sfbtab, hdr, max_band, gr[1].scalefac_compress & 1);+}++static void L3_reorder(float *grbuf, float *scratch, const uint8_t *sfb)+{+ int i, len;+ float *src = grbuf, *dst = scratch;++ for (;0 != (len = *sfb); sfb += 3, src += 2*len)+ {+ for (i = 0; i < len; i++, src++)+ {+ *dst++ = src[0*len];+ *dst++ = src[1*len];+ *dst++ = src[2*len];+ }+ }+ memcpy(grbuf, scratch, (dst - scratch)*sizeof(float));+}++static void L3_antialias(float *grbuf, int nbands)+{+ static const float g_aa[2][8] = {+ {0.85749293f,0.88174200f,0.94962865f,0.98331459f,0.99551782f,0.99916056f,0.99989920f,0.99999316f},+ {0.51449576f,0.47173197f,0.31337745f,0.18191320f,0.09457419f,0.04096558f,0.01419856f,0.00369997f}+ };++ for (; nbands > 0; nbands--, grbuf += 18)+ {+ int i = 0;+#if HAVE_SIMD+ if (have_simd()) for (; i < 8; i += 4)+ {+ f4 vu = VLD(grbuf + 18 + i);+ f4 vd = VLD(grbuf + 14 - i);+ f4 vc0 = VLD(g_aa[0] + i);+ f4 vc1 = VLD(g_aa[1] + i);+ vd = VREV(vd);+ VSTORE(grbuf + 18 + i, VSUB(VMUL(vu, vc0), VMUL(vd, vc1)));+ vd = VADD(VMUL(vu, vc1), VMUL(vd, vc0));+ VSTORE(grbuf + 14 - i, VREV(vd));+ }+#endif /* HAVE_SIMD */+#ifndef MINIMP3_ONLY_SIMD+ for(; i < 8; i++)+ {+ float u = grbuf[18 + i];+ float d = grbuf[17 - i];+ grbuf[18 + i] = u*g_aa[0][i] - d*g_aa[1][i];+ grbuf[17 - i] = u*g_aa[1][i] + d*g_aa[0][i];+ }+#endif /* MINIMP3_ONLY_SIMD */+ }+}++static void L3_dct3_9(float *y)+{+ float s0, s1, s2, s3, s4, s5, s6, s7, s8, t0, t2, t4;++ s0 = y[0]; s2 = y[2]; s4 = y[4]; s6 = y[6]; s8 = y[8];+ t0 = s0 + s6*0.5f;+ s0 -= s6;+ t4 = (s4 + s2)*0.93969262f;+ t2 = (s8 + s2)*0.76604444f;+ s6 = (s4 - s8)*0.17364818f;+ s4 += s8 - s2;++ s2 = s0 - s4*0.5f;+ y[4] = s4 + s0;+ s8 = t0 - t2 + s6;+ s0 = t0 - t4 + t2;+ s4 = t0 + t4 - s6;++ s1 = y[1]; s3 = y[3]; s5 = y[5]; s7 = y[7];++ s3 *= 0.86602540f;+ t0 = (s5 + s1)*0.98480775f;+ t4 = (s5 - s7)*0.34202014f;+ t2 = (s1 + s7)*0.64278761f;+ s1 = (s1 - s5 - s7)*0.86602540f;++ s5 = t0 - s3 - t2;+ s7 = t4 - s3 - t0;+ s3 = t4 + s3 - t2;++ y[0] = s4 - s7;+ y[1] = s2 + s1;+ y[2] = s0 - s3;+ y[3] = s8 + s5;+ y[5] = s8 - s5;+ y[6] = s0 + s3;+ y[7] = s2 - s1;+ y[8] = s4 + s7;+}++static void L3_imdct36(float *grbuf, float *overlap, const float *window, int nbands)+{+ int i, j;+ static const float g_twid9[18] = {+ 0.73727734f,0.79335334f,0.84339145f,0.88701083f,0.92387953f,0.95371695f,0.97629601f,0.99144486f,0.99904822f,0.67559021f,0.60876143f,0.53729961f,0.46174861f,0.38268343f,0.30070580f,0.21643961f,0.13052619f,0.04361938f+ };++ for (j = 0; j < nbands; j++, grbuf += 18, overlap += 9)+ {+ float co[9], si[9];+ co[0] = -grbuf[0];+ si[0] = grbuf[17];+ for (i = 0; i < 4; i++)+ {+ si[8 - 2*i] = grbuf[4*i + 1] - grbuf[4*i + 2];+ co[1 + 2*i] = grbuf[4*i + 1] + grbuf[4*i + 2];+ si[7 - 2*i] = grbuf[4*i + 4] - grbuf[4*i + 3];+ co[2 + 2*i] = -(grbuf[4*i + 3] + grbuf[4*i + 4]);+ }+ L3_dct3_9(co);+ L3_dct3_9(si);++ si[1] = -si[1];+ si[3] = -si[3];+ si[5] = -si[5];+ si[7] = -si[7];++ i = 0;++#if HAVE_SIMD+ if (have_simd()) for (; i < 8; i += 4)+ {+ f4 vovl = VLD(overlap + i);+ f4 vc = VLD(co + i);+ f4 vs = VLD(si + i);+ f4 vr0 = VLD(g_twid9 + i);+ f4 vr1 = VLD(g_twid9 + 9 + i);+ f4 vw0 = VLD(window + i);+ f4 vw1 = VLD(window + 9 + i);+ f4 vsum = VADD(VMUL(vc, vr1), VMUL(vs, vr0));+ VSTORE(overlap + i, VSUB(VMUL(vc, vr0), VMUL(vs, vr1)));+ VSTORE(grbuf + i, VSUB(VMUL(vovl, vw0), VMUL(vsum, vw1)));+ vsum = VADD(VMUL(vovl, vw1), VMUL(vsum, vw0));+ VSTORE(grbuf + 14 - i, VREV(vsum));+ }+#endif /* HAVE_SIMD */+ for (; i < 9; i++)+ {+ float ovl = overlap[i];+ float sum = co[i]*g_twid9[9 + i] + si[i]*g_twid9[0 + i];+ overlap[i] = co[i]*g_twid9[0 + i] - si[i]*g_twid9[9 + i];+ grbuf[i] = ovl*window[0 + i] - sum*window[9 + i];+ grbuf[17 - i] = ovl*window[9 + i] + sum*window[0 + i];+ }+ }+}++static void L3_idct3(float x0, float x1, float x2, float *dst)+{+ float m1 = x1*0.86602540f;+ float a1 = x0 - x2*0.5f;+ dst[1] = x0 + x2;+ dst[0] = a1 + m1;+ dst[2] = a1 - m1;+}++static void L3_imdct12(float *x, float *dst, float *overlap)+{+ static const float g_twid3[6] = { 0.79335334f,0.92387953f,0.99144486f, 0.60876143f,0.38268343f,0.13052619f };+ float co[3], si[3];+ int i;++ L3_idct3(-x[0], x[6] + x[3], x[12] + x[9], co);+ L3_idct3(x[15], x[12] - x[9], x[6] - x[3], si);+ si[1] = -si[1];++ for (i = 0; i < 3; i++)+ {+ float ovl = overlap[i];+ float sum = co[i]*g_twid3[3 + i] + si[i]*g_twid3[0 + i];+ overlap[i] = co[i]*g_twid3[0 + i] - si[i]*g_twid3[3 + i];+ dst[i] = ovl*g_twid3[2 - i] - sum*g_twid3[5 - i];+ dst[5 - i] = ovl*g_twid3[5 - i] + sum*g_twid3[2 - i];+ }+}++static void L3_imdct_short(float *grbuf, float *overlap, int nbands)+{+ for (;nbands > 0; nbands--, overlap += 9, grbuf += 18)+ {+ float tmp[18];+ memcpy(tmp, grbuf, sizeof(tmp));+ memcpy(grbuf, overlap, 6*sizeof(float));+ L3_imdct12(tmp, grbuf + 6, overlap + 6);+ L3_imdct12(tmp + 1, grbuf + 12, overlap + 6);+ L3_imdct12(tmp + 2, overlap, overlap + 6);+ }+}++static void L3_change_sign(float *grbuf)+{+ int b, i;+ for (b = 0, grbuf += 18; b < 32; b += 2, grbuf += 36)+ for (i = 1; i < 18; i += 2)+ grbuf[i] = -grbuf[i];+}++static void L3_imdct_gr(float *grbuf, float *overlap, unsigned block_type, unsigned n_long_bands)+{+ static const float g_mdct_window[2][18] = {+ { 0.99904822f,0.99144486f,0.97629601f,0.95371695f,0.92387953f,0.88701083f,0.84339145f,0.79335334f,0.73727734f,0.04361938f,0.13052619f,0.21643961f,0.30070580f,0.38268343f,0.46174861f,0.53729961f,0.60876143f,0.67559021f },+ { 1,1,1,1,1,1,0.99144486f,0.92387953f,0.79335334f,0,0,0,0,0,0,0.13052619f,0.38268343f,0.60876143f }+ };+ if (n_long_bands)+ {+ L3_imdct36(grbuf, overlap, g_mdct_window[0], n_long_bands);+ grbuf += 18*n_long_bands;+ overlap += 9*n_long_bands;+ }+ if (block_type == SHORT_BLOCK_TYPE)+ L3_imdct_short(grbuf, overlap, 32 - n_long_bands);+ else+ L3_imdct36(grbuf, overlap, g_mdct_window[block_type == STOP_BLOCK_TYPE], 32 - n_long_bands);+}++static void L3_save_reservoir(mp3dec_t *h, mp3dec_scratch_t *s)+{+ int pos = (s->bs.pos + 7)/8u;+ int remains = s->bs.limit/8u - pos;+ if (remains > MAX_BITRESERVOIR_BYTES)+ {+ pos += remains - MAX_BITRESERVOIR_BYTES;+ remains = MAX_BITRESERVOIR_BYTES;+ }+ if (remains > 0)+ {+ memmove(h->reserv_buf, s->maindata + pos, remains);+ }+ h->reserv = remains;+}++static int L3_restore_reservoir(mp3dec_t *h, bs_t *bs, mp3dec_scratch_t *s, int main_data_begin)+{+ int frame_bytes = (bs->limit - bs->pos)/8;+ int bytes_have = MINIMP3_MIN(h->reserv, main_data_begin);+ memcpy(s->maindata, h->reserv_buf + MINIMP3_MAX(0, h->reserv - main_data_begin), MINIMP3_MIN(h->reserv, main_data_begin));+ memcpy(s->maindata + bytes_have, bs->buf + bs->pos/8, frame_bytes);+ bs_init(&s->bs, s->maindata, bytes_have + frame_bytes);+ return h->reserv >= main_data_begin;+}++static void L3_decode(mp3dec_t *h, mp3dec_scratch_t *s, L3_gr_info_t *gr_info, int nch)+{+ int ch;++ for (ch = 0; ch < nch; ch++)+ {+ int layer3gr_limit = s->bs.pos + gr_info[ch].part_23_length;+ L3_decode_scalefactors(h->header, s->ist_pos[ch], &s->bs, gr_info + ch, s->scf, ch);+ L3_huffman(s->grbuf[ch], &s->bs, gr_info + ch, s->scf, layer3gr_limit);+ }++ if (HDR_TEST_I_STEREO(h->header))+ {+ L3_intensity_stereo(s->grbuf[0], s->ist_pos[1], gr_info, h->header);+ } else if (HDR_IS_MS_STEREO(h->header))+ {+ L3_midside_stereo(s->grbuf[0], 576);+ }++ for (ch = 0; ch < nch; ch++, gr_info++)+ {+ int aa_bands = 31;+ int n_long_bands = (gr_info->mixed_block_flag ? 2 : 0) << (int)(HDR_GET_MY_SAMPLE_RATE(h->header) == 2);++ if (gr_info->n_short_sfb)+ {+ aa_bands = n_long_bands - 1;+ L3_reorder(s->grbuf[ch] + n_long_bands*18, s->syn[0], gr_info->sfbtab + gr_info->n_long_sfb);+ }++ L3_antialias(s->grbuf[ch], aa_bands);+ L3_imdct_gr(s->grbuf[ch], h->mdct_overlap[ch], gr_info->block_type, n_long_bands);+ L3_change_sign(s->grbuf[ch]);+ }+}++static void mp3d_DCT_II(float *grbuf, int n)+{+ static const float g_sec[24] = {+ 10.19000816f,0.50060302f,0.50241929f,3.40760851f,0.50547093f,0.52249861f,2.05778098f,0.51544732f,0.56694406f,1.48416460f,0.53104258f,0.64682180f,1.16943991f,0.55310392f,0.78815460f,0.97256821f,0.58293498f,1.06067765f,0.83934963f,0.62250412f,1.72244716f,0.74453628f,0.67480832f,5.10114861f+ };+ int i, k = 0;+#if HAVE_SIMD+ if (have_simd()) for (; k < n; k += 4)+ {+ f4 t[4][8], *x;+ float *y = grbuf + k;++ for (x = t[0], i = 0; i < 8; i++, x++)+ {+ f4 x0 = VLD(&y[i*18]);+ f4 x1 = VLD(&y[(15 - i)*18]);+ f4 x2 = VLD(&y[(16 + i)*18]);+ f4 x3 = VLD(&y[(31 - i)*18]);+ f4 t0 = VADD(x0, x3);+ f4 t1 = VADD(x1, x2);+ f4 t2 = VMUL_S(VSUB(x1, x2), g_sec[3*i + 0]);+ f4 t3 = VMUL_S(VSUB(x0, x3), g_sec[3*i + 1]);+ x[0] = VADD(t0, t1);+ x[8] = VMUL_S(VSUB(t0, t1), g_sec[3*i + 2]);+ x[16] = VADD(t3, t2);+ x[24] = VMUL_S(VSUB(t3, t2), g_sec[3*i + 2]);+ }+ for (x = t[0], i = 0; i < 4; i++, x += 8)+ {+ f4 x0 = x[0], x1 = x[1], x2 = x[2], x3 = x[3], x4 = x[4], x5 = x[5], x6 = x[6], x7 = x[7], xt;+ xt = VSUB(x0, x7); x0 = VADD(x0, x7);+ x7 = VSUB(x1, x6); x1 = VADD(x1, x6);+ x6 = VSUB(x2, x5); x2 = VADD(x2, x5);+ x5 = VSUB(x3, x4); x3 = VADD(x3, x4);+ x4 = VSUB(x0, x3); x0 = VADD(x0, x3);+ x3 = VSUB(x1, x2); x1 = VADD(x1, x2);+ x[0] = VADD(x0, x1);+ x[4] = VMUL_S(VSUB(x0, x1), 0.70710677f);+ x5 = VADD(x5, x6);+ x6 = VMUL_S(VADD(x6, x7), 0.70710677f);+ x7 = VADD(x7, xt);+ x3 = VMUL_S(VADD(x3, x4), 0.70710677f);+ x5 = VSUB(x5, VMUL_S(x7, 0.198912367f)); /* rotate by PI/8 */+ x7 = VADD(x7, VMUL_S(x5, 0.382683432f));+ x5 = VSUB(x5, VMUL_S(x7, 0.198912367f));+ x0 = VSUB(xt, x6); xt = VADD(xt, x6);+ x[1] = VMUL_S(VADD(xt, x7), 0.50979561f);+ x[2] = VMUL_S(VADD(x4, x3), 0.54119611f);+ x[3] = VMUL_S(VSUB(x0, x5), 0.60134488f);+ x[5] = VMUL_S(VADD(x0, x5), 0.89997619f);+ x[6] = VMUL_S(VSUB(x4, x3), 1.30656302f);+ x[7] = VMUL_S(VSUB(xt, x7), 2.56291556f);+ }++ if (k > n - 3)+ {+#if HAVE_SSE+#define VSAVE2(i, v) _mm_storel_pi((__m64 *)(void*)&y[i*18], v)+#else /* HAVE_SSE */+#define VSAVE2(i, v) vst1_f32((float32_t *)&y[i*18], vget_low_f32(v))+#endif /* HAVE_SSE */+ for (i = 0; i < 7; i++, y += 4*18)+ {+ f4 s = VADD(t[3][i], t[3][i + 1]);+ VSAVE2(0, t[0][i]);+ VSAVE2(1, VADD(t[2][i], s));+ VSAVE2(2, VADD(t[1][i], t[1][i + 1]));+ VSAVE2(3, VADD(t[2][1 + i], s));+ }+ VSAVE2(0, t[0][7]);+ VSAVE2(1, VADD(t[2][7], t[3][7]));+ VSAVE2(2, t[1][7]);+ VSAVE2(3, t[3][7]);+ } else+ {+#define VSAVE4(i, v) VSTORE(&y[i*18], v)+ for (i = 0; i < 7; i++, y += 4*18)+ {+ f4 s = VADD(t[3][i], t[3][i + 1]);+ VSAVE4(0, t[0][i]);+ VSAVE4(1, VADD(t[2][i], s));+ VSAVE4(2, VADD(t[1][i], t[1][i + 1]));+ VSAVE4(3, VADD(t[2][1 + i], s));+ }+ VSAVE4(0, t[0][7]);+ VSAVE4(1, VADD(t[2][7], t[3][7]));+ VSAVE4(2, t[1][7]);+ VSAVE4(3, t[3][7]);+ }+ } else+#endif /* HAVE_SIMD */+#ifdef MINIMP3_ONLY_SIMD+ {} /* for HAVE_SIMD=1, MINIMP3_ONLY_SIMD=1 case we do not need non-intrinsic "else" branch */+#else /* MINIMP3_ONLY_SIMD */+ for (; k < n; k++)+ {+ float t[4][8], *x, *y = grbuf + k;++ for (x = t[0], i = 0; i < 8; i++, x++)+ {+ float x0 = y[i*18];+ float x1 = y[(15 - i)*18];+ float x2 = y[(16 + i)*18];+ float x3 = y[(31 - i)*18];+ float t0 = x0 + x3;+ float t1 = x1 + x2;+ float t2 = (x1 - x2)*g_sec[3*i + 0];+ float t3 = (x0 - x3)*g_sec[3*i + 1];+ x[0] = t0 + t1;+ x[8] = (t0 - t1)*g_sec[3*i + 2];+ x[16] = t3 + t2;+ x[24] = (t3 - t2)*g_sec[3*i + 2];+ }+ for (x = t[0], i = 0; i < 4; i++, x += 8)+ {+ float x0 = x[0], x1 = x[1], x2 = x[2], x3 = x[3], x4 = x[4], x5 = x[5], x6 = x[6], x7 = x[7], xt;+ xt = x0 - x7; x0 += x7;+ x7 = x1 - x6; x1 += x6;+ x6 = x2 - x5; x2 += x5;+ x5 = x3 - x4; x3 += x4;+ x4 = x0 - x3; x0 += x3;+ x3 = x1 - x2; x1 += x2;+ x[0] = x0 + x1;+ x[4] = (x0 - x1)*0.70710677f;+ x5 = x5 + x6;+ x6 = (x6 + x7)*0.70710677f;+ x7 = x7 + xt;+ x3 = (x3 + x4)*0.70710677f;+ x5 -= x7*0.198912367f; /* rotate by PI/8 */+ x7 += x5*0.382683432f;+ x5 -= x7*0.198912367f;+ x0 = xt - x6; xt += x6;+ x[1] = (xt + x7)*0.50979561f;+ x[2] = (x4 + x3)*0.54119611f;+ x[3] = (x0 - x5)*0.60134488f;+ x[5] = (x0 + x5)*0.89997619f;+ x[6] = (x4 - x3)*1.30656302f;+ x[7] = (xt - x7)*2.56291556f;++ }+ for (i = 0; i < 7; i++, y += 4*18)+ {+ y[0*18] = t[0][i];+ y[1*18] = t[2][i] + t[3][i] + t[3][i + 1];+ y[2*18] = t[1][i] + t[1][i + 1];+ y[3*18] = t[2][i + 1] + t[3][i] + t[3][i + 1];+ }+ y[0*18] = t[0][7];+ y[1*18] = t[2][7] + t[3][7];+ y[2*18] = t[1][7];+ y[3*18] = t[3][7];+ }+#endif /* MINIMP3_ONLY_SIMD */+}++#ifndef MINIMP3_FLOAT_OUTPUT+static int16_t mp3d_scale_pcm(float sample)+{+#if HAVE_ARMV6+ int32_t s32 = (int32_t)(sample + .5f);+ s32 -= (s32 < 0);+ int16_t s = (int16_t)minimp3_clip_int16_arm(s32);+#else+ if (sample >= 32766.5) return (int16_t) 32767;+ if (sample <= -32767.5) return (int16_t)-32768;+ int16_t s = (int16_t)(sample + .5f);+ s -= (s < 0); /* away from zero, to be compliant */+#endif+ return s;+}+#else /* MINIMP3_FLOAT_OUTPUT */+static float mp3d_scale_pcm(float sample)+{+ return sample*(1.f/32768.f);+}+#endif /* MINIMP3_FLOAT_OUTPUT */++static void mp3d_synth_pair(mp3d_sample_t *pcm, int nch, const float *z)+{+ float a;+ a = (z[14*64] - z[ 0]) * 29;+ a += (z[ 1*64] + z[13*64]) * 213;+ a += (z[12*64] - z[ 2*64]) * 459;+ a += (z[ 3*64] + z[11*64]) * 2037;+ a += (z[10*64] - z[ 4*64]) * 5153;+ a += (z[ 5*64] + z[ 9*64]) * 6574;+ a += (z[ 8*64] - z[ 6*64]) * 37489;+ a += z[ 7*64] * 75038;+ pcm[0] = mp3d_scale_pcm(a);++ z += 2;+ a = z[14*64] * 104;+ a += z[12*64] * 1567;+ a += z[10*64] * 9727;+ a += z[ 8*64] * 64019;+ a += z[ 6*64] * -9975;+ a += z[ 4*64] * -45;+ a += z[ 2*64] * 146;+ a += z[ 0*64] * -5;+ pcm[16*nch] = mp3d_scale_pcm(a);+}++static void mp3d_synth(float *xl, mp3d_sample_t *dstl, int nch, float *lins)+{+ int i;+ float *xr = xl + 576*(nch - 1);+ mp3d_sample_t *dstr = dstl + (nch - 1);++ static const float g_win[] = {+ -1,26,-31,208,218,401,-519,2063,2000,4788,-5517,7134,5959,35640,-39336,74992,+ -1,24,-35,202,222,347,-581,2080,1952,4425,-5879,7640,5288,33791,-41176,74856,+ -1,21,-38,196,225,294,-645,2087,1893,4063,-6237,8092,4561,31947,-43006,74630,+ -1,19,-41,190,227,244,-711,2085,1822,3705,-6589,8492,3776,30112,-44821,74313,+ -1,17,-45,183,228,197,-779,2075,1739,3351,-6935,8840,2935,28289,-46617,73908,+ -1,16,-49,176,228,153,-848,2057,1644,3004,-7271,9139,2037,26482,-48390,73415,+ -2,14,-53,169,227,111,-919,2032,1535,2663,-7597,9389,1082,24694,-50137,72835,+ -2,13,-58,161,224,72,-991,2001,1414,2330,-7910,9592,70,22929,-51853,72169,+ -2,11,-63,154,221,36,-1064,1962,1280,2006,-8209,9750,-998,21189,-53534,71420,+ -2,10,-68,147,215,2,-1137,1919,1131,1692,-8491,9863,-2122,19478,-55178,70590,+ -3,9,-73,139,208,-29,-1210,1870,970,1388,-8755,9935,-3300,17799,-56778,69679,+ -3,8,-79,132,200,-57,-1283,1817,794,1095,-8998,9966,-4533,16155,-58333,68692,+ -4,7,-85,125,189,-83,-1356,1759,605,814,-9219,9959,-5818,14548,-59838,67629,+ -4,7,-91,117,177,-106,-1428,1698,402,545,-9416,9916,-7154,12980,-61289,66494,+ -5,6,-97,111,163,-127,-1498,1634,185,288,-9585,9838,-8540,11455,-62684,65290+ };+ float *zlin = lins + 15*64;+ const float *w = g_win;++ zlin[4*15] = xl[18*16];+ zlin[4*15 + 1] = xr[18*16];+ zlin[4*15 + 2] = xl[0];+ zlin[4*15 + 3] = xr[0];++ zlin[4*31] = xl[1 + 18*16];+ zlin[4*31 + 1] = xr[1 + 18*16];+ zlin[4*31 + 2] = xl[1];+ zlin[4*31 + 3] = xr[1];++ mp3d_synth_pair(dstr, nch, lins + 4*15 + 1);+ mp3d_synth_pair(dstr + 32*nch, nch, lins + 4*15 + 64 + 1);+ mp3d_synth_pair(dstl, nch, lins + 4*15);+ mp3d_synth_pair(dstl + 32*nch, nch, lins + 4*15 + 64);++#if HAVE_SIMD+ if (have_simd()) for (i = 14; i >= 0; i--)+ {+#define VLOAD(k) f4 w0 = VSET(*w++); f4 w1 = VSET(*w++); f4 vz = VLD(&zlin[4*i - 64*k]); f4 vy = VLD(&zlin[4*i - 64*(15 - k)]);+#define V0(k) { VLOAD(k) b = VADD(VMUL(vz, w1), VMUL(vy, w0)) ; a = VSUB(VMUL(vz, w0), VMUL(vy, w1)); }+#define V1(k) { VLOAD(k) b = VADD(b, VADD(VMUL(vz, w1), VMUL(vy, w0))); a = VADD(a, VSUB(VMUL(vz, w0), VMUL(vy, w1))); }+#define V2(k) { VLOAD(k) b = VADD(b, VADD(VMUL(vz, w1), VMUL(vy, w0))); a = VADD(a, VSUB(VMUL(vy, w1), VMUL(vz, w0))); }+ f4 a, b;+ zlin[4*i] = xl[18*(31 - i)];+ zlin[4*i + 1] = xr[18*(31 - i)];+ zlin[4*i + 2] = xl[1 + 18*(31 - i)];+ zlin[4*i + 3] = xr[1 + 18*(31 - i)];+ zlin[4*i + 64] = xl[1 + 18*(1 + i)];+ zlin[4*i + 64 + 1] = xr[1 + 18*(1 + i)];+ zlin[4*i - 64 + 2] = xl[18*(1 + i)];+ zlin[4*i - 64 + 3] = xr[18*(1 + i)];++ V0(0) V2(1) V1(2) V2(3) V1(4) V2(5) V1(6) V2(7)++ {+#ifndef MINIMP3_FLOAT_OUTPUT+#if HAVE_SSE+ static const f4 g_max = { 32767.0f, 32767.0f, 32767.0f, 32767.0f };+ static const f4 g_min = { -32768.0f, -32768.0f, -32768.0f, -32768.0f };+ __m128i pcm8 = _mm_packs_epi32(_mm_cvtps_epi32(_mm_max_ps(_mm_min_ps(a, g_max), g_min)),+ _mm_cvtps_epi32(_mm_max_ps(_mm_min_ps(b, g_max), g_min)));+ dstr[(15 - i)*nch] = _mm_extract_epi16(pcm8, 1);+ dstr[(17 + i)*nch] = _mm_extract_epi16(pcm8, 5);+ dstl[(15 - i)*nch] = _mm_extract_epi16(pcm8, 0);+ dstl[(17 + i)*nch] = _mm_extract_epi16(pcm8, 4);+ dstr[(47 - i)*nch] = _mm_extract_epi16(pcm8, 3);+ dstr[(49 + i)*nch] = _mm_extract_epi16(pcm8, 7);+ dstl[(47 - i)*nch] = _mm_extract_epi16(pcm8, 2);+ dstl[(49 + i)*nch] = _mm_extract_epi16(pcm8, 6);+#else /* HAVE_SSE */+ int16x4_t pcma, pcmb;+ a = VADD(a, VSET(0.5f));+ b = VADD(b, VSET(0.5f));+ pcma = vqmovn_s32(vqaddq_s32(vcvtq_s32_f32(a), vreinterpretq_s32_u32(vcltq_f32(a, VSET(0)))));+ pcmb = vqmovn_s32(vqaddq_s32(vcvtq_s32_f32(b), vreinterpretq_s32_u32(vcltq_f32(b, VSET(0)))));+ vst1_lane_s16(dstr + (15 - i)*nch, pcma, 1);+ vst1_lane_s16(dstr + (17 + i)*nch, pcmb, 1);+ vst1_lane_s16(dstl + (15 - i)*nch, pcma, 0);+ vst1_lane_s16(dstl + (17 + i)*nch, pcmb, 0);+ vst1_lane_s16(dstr + (47 - i)*nch, pcma, 3);+ vst1_lane_s16(dstr + (49 + i)*nch, pcmb, 3);+ vst1_lane_s16(dstl + (47 - i)*nch, pcma, 2);+ vst1_lane_s16(dstl + (49 + i)*nch, pcmb, 2);+#endif /* HAVE_SSE */++#else /* MINIMP3_FLOAT_OUTPUT */++ static const f4 g_scale = { 1.0f/32768.0f, 1.0f/32768.0f, 1.0f/32768.0f, 1.0f/32768.0f };+ a = VMUL(a, g_scale);+ b = VMUL(b, g_scale);+#if HAVE_SSE+ _mm_store_ss(dstr + (15 - i)*nch, _mm_shuffle_ps(a, a, _MM_SHUFFLE(1, 1, 1, 1)));+ _mm_store_ss(dstr + (17 + i)*nch, _mm_shuffle_ps(b, b, _MM_SHUFFLE(1, 1, 1, 1)));+ _mm_store_ss(dstl + (15 - i)*nch, _mm_shuffle_ps(a, a, _MM_SHUFFLE(0, 0, 0, 0)));+ _mm_store_ss(dstl + (17 + i)*nch, _mm_shuffle_ps(b, b, _MM_SHUFFLE(0, 0, 0, 0)));+ _mm_store_ss(dstr + (47 - i)*nch, _mm_shuffle_ps(a, a, _MM_SHUFFLE(3, 3, 3, 3)));+ _mm_store_ss(dstr + (49 + i)*nch, _mm_shuffle_ps(b, b, _MM_SHUFFLE(3, 3, 3, 3)));+ _mm_store_ss(dstl + (47 - i)*nch, _mm_shuffle_ps(a, a, _MM_SHUFFLE(2, 2, 2, 2)));+ _mm_store_ss(dstl + (49 + i)*nch, _mm_shuffle_ps(b, b, _MM_SHUFFLE(2, 2, 2, 2)));+#else /* HAVE_SSE */+ vst1q_lane_f32(dstr + (15 - i)*nch, a, 1);+ vst1q_lane_f32(dstr + (17 + i)*nch, b, 1);+ vst1q_lane_f32(dstl + (15 - i)*nch, a, 0);+ vst1q_lane_f32(dstl + (17 + i)*nch, b, 0);+ vst1q_lane_f32(dstr + (47 - i)*nch, a, 3);+ vst1q_lane_f32(dstr + (49 + i)*nch, b, 3);+ vst1q_lane_f32(dstl + (47 - i)*nch, a, 2);+ vst1q_lane_f32(dstl + (49 + i)*nch, b, 2);+#endif /* HAVE_SSE */+#endif /* MINIMP3_FLOAT_OUTPUT */+ }+ } else+#endif /* HAVE_SIMD */+#ifdef MINIMP3_ONLY_SIMD+ {} /* for HAVE_SIMD=1, MINIMP3_ONLY_SIMD=1 case we do not need non-intrinsic "else" branch */+#else /* MINIMP3_ONLY_SIMD */+ for (i = 14; i >= 0; i--)+ {+#define LOAD(k) float w0 = *w++; float w1 = *w++; float *vz = &zlin[4*i - k*64]; float *vy = &zlin[4*i - (15 - k)*64];+#define S0(k) { int j; LOAD(k); for (j = 0; j < 4; j++) b[j] = vz[j]*w1 + vy[j]*w0, a[j] = vz[j]*w0 - vy[j]*w1; }+#define S1(k) { int j; LOAD(k); for (j = 0; j < 4; j++) b[j] += vz[j]*w1 + vy[j]*w0, a[j] += vz[j]*w0 - vy[j]*w1; }+#define S2(k) { int j; LOAD(k); for (j = 0; j < 4; j++) b[j] += vz[j]*w1 + vy[j]*w0, a[j] += vy[j]*w1 - vz[j]*w0; }+ float a[4], b[4];++ zlin[4*i] = xl[18*(31 - i)];+ zlin[4*i + 1] = xr[18*(31 - i)];+ zlin[4*i + 2] = xl[1 + 18*(31 - i)];+ zlin[4*i + 3] = xr[1 + 18*(31 - i)];+ zlin[4*(i + 16)] = xl[1 + 18*(1 + i)];+ zlin[4*(i + 16) + 1] = xr[1 + 18*(1 + i)];+ zlin[4*(i - 16) + 2] = xl[18*(1 + i)];+ zlin[4*(i - 16) + 3] = xr[18*(1 + i)];++ S0(0) S2(1) S1(2) S2(3) S1(4) S2(5) S1(6) S2(7)++ dstr[(15 - i)*nch] = mp3d_scale_pcm(a[1]);+ dstr[(17 + i)*nch] = mp3d_scale_pcm(b[1]);+ dstl[(15 - i)*nch] = mp3d_scale_pcm(a[0]);+ dstl[(17 + i)*nch] = mp3d_scale_pcm(b[0]);+ dstr[(47 - i)*nch] = mp3d_scale_pcm(a[3]);+ dstr[(49 + i)*nch] = mp3d_scale_pcm(b[3]);+ dstl[(47 - i)*nch] = mp3d_scale_pcm(a[2]);+ dstl[(49 + i)*nch] = mp3d_scale_pcm(b[2]);+ }+#endif /* MINIMP3_ONLY_SIMD */+}++static void mp3d_synth_granule(float *qmf_state, float *grbuf, int nbands, int nch, mp3d_sample_t *pcm, float *lins)+{+ int i;+ for (i = 0; i < nch; i++)+ {+ mp3d_DCT_II(grbuf + 576*i, nbands);+ }++ memcpy(lins, qmf_state, sizeof(float)*15*64);++ for (i = 0; i < nbands; i += 2)+ {+ mp3d_synth(grbuf + i, pcm + 32*nch*i, nch, lins + i*64);+ }+#ifndef MINIMP3_NONSTANDARD_BUT_LOGICAL+ if (nch == 1)+ {+ for (i = 0; i < 15*64; i += 2)+ {+ qmf_state[i] = lins[nbands*64 + i];+ }+ } else+#endif /* MINIMP3_NONSTANDARD_BUT_LOGICAL */+ {+ memcpy(qmf_state, lins + nbands*64, sizeof(float)*15*64);+ }+}++static int mp3d_match_frame(const uint8_t *hdr, int mp3_bytes, int frame_bytes)+{+ int i, nmatch;+ for (i = 0, nmatch = 0; nmatch < MAX_FRAME_SYNC_MATCHES; nmatch++)+ {+ i += hdr_frame_bytes(hdr + i, frame_bytes) + hdr_padding(hdr + i);+ if (i + HDR_SIZE > mp3_bytes)+ return nmatch > 0;+ if (!hdr_compare(hdr, hdr + i))+ return 0;+ }+ return 1;+}++static int mp3d_find_frame(const uint8_t *mp3, int mp3_bytes, int *free_format_bytes, int *ptr_frame_bytes)+{+ int i, k;+ for (i = 0; i < mp3_bytes - HDR_SIZE; i++, mp3++)+ {+ if (hdr_valid(mp3))+ {+ int frame_bytes = hdr_frame_bytes(mp3, *free_format_bytes);+ int frame_and_padding = frame_bytes + hdr_padding(mp3);++ for (k = HDR_SIZE; !frame_bytes && k < MAX_FREE_FORMAT_FRAME_SIZE && i + 2*k < mp3_bytes - HDR_SIZE; k++)+ {+ if (hdr_compare(mp3, mp3 + k))+ {+ int fb = k - hdr_padding(mp3);+ int nextfb = fb + hdr_padding(mp3 + k);+ if (i + k + nextfb + HDR_SIZE > mp3_bytes || !hdr_compare(mp3, mp3 + k + nextfb))+ continue;+ frame_and_padding = k;+ frame_bytes = fb;+ *free_format_bytes = fb;+ }+ }+ if ((frame_bytes && i + frame_and_padding <= mp3_bytes &&+ mp3d_match_frame(mp3, mp3_bytes - i, frame_bytes)) ||+ (!i && frame_and_padding == mp3_bytes))+ {+ *ptr_frame_bytes = frame_and_padding;+ return i;+ }+ *free_format_bytes = 0;+ }+ }+ *ptr_frame_bytes = 0;+ return mp3_bytes;+}++void mp3dec_init(mp3dec_t *dec)+{+ dec->header[0] = 0;+}++int mp3dec_decode_frame(mp3dec_t *dec, const uint8_t *mp3, int mp3_bytes, mp3d_sample_t *pcm, mp3dec_frame_info_t *info)+{+ int i = 0, igr, frame_size = 0, success = 1;+ const uint8_t *hdr;+ bs_t bs_frame[1];+ mp3dec_scratch_t scratch;++ if (mp3_bytes > 4 && dec->header[0] == 0xff && hdr_compare(dec->header, mp3))+ {+ frame_size = hdr_frame_bytes(mp3, dec->free_format_bytes) + hdr_padding(mp3);+ if (frame_size != mp3_bytes && (frame_size + HDR_SIZE > mp3_bytes || !hdr_compare(mp3, mp3 + frame_size)))+ {+ frame_size = 0;+ }+ }+ if (!frame_size)+ {+ memset(dec, 0, sizeof(mp3dec_t));+ i = mp3d_find_frame(mp3, mp3_bytes, &dec->free_format_bytes, &frame_size);+ if (!frame_size || i + frame_size > mp3_bytes)+ {+ info->frame_bytes = i;+ return 0;+ }+ }++ hdr = mp3 + i;+ memcpy(dec->header, hdr, HDR_SIZE);+ info->frame_bytes = i + frame_size;+ info->frame_offset = i;+ info->channels = HDR_IS_MONO(hdr) ? 1 : 2;+ info->hz = hdr_sample_rate_hz(hdr);+ info->layer = 4 - HDR_GET_LAYER(hdr);+ info->bitrate_kbps = hdr_bitrate_kbps(hdr);++ if (!pcm)+ {+ return hdr_frame_samples(hdr);+ }++ bs_init(bs_frame, hdr + HDR_SIZE, frame_size - HDR_SIZE);+ if (HDR_IS_CRC(hdr))+ {+ get_bits(bs_frame, 16);+ }++ if (info->layer == 3)+ {+ int main_data_begin = L3_read_side_info(bs_frame, scratch.gr_info, hdr);+ if (main_data_begin < 0 || bs_frame->pos > bs_frame->limit)+ {+ mp3dec_init(dec);+ return 0;+ }+ success = L3_restore_reservoir(dec, bs_frame, &scratch, main_data_begin);+ if (success)+ {+ for (igr = 0; igr < (HDR_TEST_MPEG1(hdr) ? 2 : 1); igr++, pcm += 576*info->channels)+ {+ memset(scratch.grbuf[0], 0, 576*2*sizeof(float));+ L3_decode(dec, &scratch, scratch.gr_info + igr*info->channels, info->channels);+ mp3d_synth_granule(dec->qmf_state, scratch.grbuf[0], 18, info->channels, pcm, scratch.syn[0]);+ }+ }+ L3_save_reservoir(dec, &scratch);+ } else+ {+#ifdef MINIMP3_ONLY_MP3+ return 0;+#else /* MINIMP3_ONLY_MP3 */+ L12_scale_info sci[1];+ L12_read_scale_info(hdr, bs_frame, sci);++ memset(scratch.grbuf[0], 0, 576*2*sizeof(float));+ for (i = 0, igr = 0; igr < 3; igr++)+ {+ if (12 == (i += L12_dequantize_granule(scratch.grbuf[0] + i, bs_frame, sci, info->layer | 1)))+ {+ i = 0;+ L12_apply_scf_384(sci, sci->scf + igr, scratch.grbuf[0]);+ mp3d_synth_granule(dec->qmf_state, scratch.grbuf[0], 12, info->channels, pcm, scratch.syn[0]);+ memset(scratch.grbuf[0], 0, 576*2*sizeof(float));+ pcm += 384*info->channels;+ }+ if (bs_frame->pos > bs_frame->limit)+ {+ mp3dec_init(dec);+ return 0;+ }+ }+#endif /* MINIMP3_ONLY_MP3 */+ }+ return success*hdr_frame_samples(dec->header);+}++#ifdef MINIMP3_FLOAT_OUTPUT+void mp3dec_f32_to_s16(const float *in, int16_t *out, int num_samples)+{+ int i = 0;+#if HAVE_SIMD+ int aligned_count = num_samples & ~7;+ for(; i < aligned_count; i += 8)+ {+ static const f4 g_scale = { 32768.0f, 32768.0f, 32768.0f, 32768.0f };+ f4 a = VMUL(VLD(&in[i ]), g_scale);+ f4 b = VMUL(VLD(&in[i+4]), g_scale);+#if HAVE_SSE+ static const f4 g_max = { 32767.0f, 32767.0f, 32767.0f, 32767.0f };+ static const f4 g_min = { -32768.0f, -32768.0f, -32768.0f, -32768.0f };+ __m128i pcm8 = _mm_packs_epi32(_mm_cvtps_epi32(_mm_max_ps(_mm_min_ps(a, g_max), g_min)),+ _mm_cvtps_epi32(_mm_max_ps(_mm_min_ps(b, g_max), g_min)));+ out[i ] = _mm_extract_epi16(pcm8, 0);+ out[i+1] = _mm_extract_epi16(pcm8, 1);+ out[i+2] = _mm_extract_epi16(pcm8, 2);+ out[i+3] = _mm_extract_epi16(pcm8, 3);+ out[i+4] = _mm_extract_epi16(pcm8, 4);+ out[i+5] = _mm_extract_epi16(pcm8, 5);+ out[i+6] = _mm_extract_epi16(pcm8, 6);+ out[i+7] = _mm_extract_epi16(pcm8, 7);+#else /* HAVE_SSE */+ int16x4_t pcma, pcmb;+ a = VADD(a, VSET(0.5f));+ b = VADD(b, VSET(0.5f));+ pcma = vqmovn_s32(vqaddq_s32(vcvtq_s32_f32(a), vreinterpretq_s32_u32(vcltq_f32(a, VSET(0)))));+ pcmb = vqmovn_s32(vqaddq_s32(vcvtq_s32_f32(b), vreinterpretq_s32_u32(vcltq_f32(b, VSET(0)))));+ vst1_lane_s16(out+i , pcma, 0);+ vst1_lane_s16(out+i+1, pcma, 1);+ vst1_lane_s16(out+i+2, pcma, 2);+ vst1_lane_s16(out+i+3, pcma, 3);+ vst1_lane_s16(out+i+4, pcmb, 0);+ vst1_lane_s16(out+i+5, pcmb, 1);+ vst1_lane_s16(out+i+6, pcmb, 2);+ vst1_lane_s16(out+i+7, pcmb, 3);+#endif /* HAVE_SSE */+ }+#endif /* HAVE_SIMD */+ for(; i < num_samples; i++)+ {+ float sample = in[i] * 32768.0f;+ if (sample >= 32766.5)+ out[i] = (int16_t) 32767;+ else if (sample <= -32767.5)+ out[i] = (int16_t)-32768;+ else+ {+ int16_t s = (int16_t)(sample + .5f);+ s -= (s < 0); /* away from zero, to be compliant */+ out[i] = s;+ }+ }+}+#endif /* MINIMP3_FLOAT_OUTPUT */+#endif /* MINIMP3_IMPLEMENTATION && !_MINIMP3_IMPLEMENTATION_GUARD */
+ cbits/minimp3_ex.h view
@@ -0,0 +1,1397 @@+#ifndef MINIMP3_EXT_H+#define MINIMP3_EXT_H+/*+ https://github.com/lieff/minimp3+ To the extent possible under law, the author(s) have dedicated all copyright and related and neighboring rights to this software to the public domain worldwide.+ This software is distributed without any warranty.+ See <http://creativecommons.org/publicdomain/zero/1.0/>.+*/+#include <stddef.h>+#include "minimp3.h"++/* flags for mp3dec_ex_open_* functions */+#define MP3D_SEEK_TO_BYTE 0 /* mp3dec_ex_seek seeks to byte in stream */+#define MP3D_SEEK_TO_SAMPLE 1 /* mp3dec_ex_seek precisely seeks to sample using index (created during duration calculation scan or when mp3dec_ex_seek called) */+#define MP3D_DO_NOT_SCAN 2 /* do not scan whole stream for duration if vbrtag not found, mp3dec_ex_t::samples will be filled only if mp3dec_ex_t::vbr_tag_found == 1 */+#ifdef MINIMP3_ALLOW_MONO_STEREO_TRANSITION+#define MP3D_ALLOW_MONO_STEREO_TRANSITION 4+#define MP3D_FLAGS_MASK 7+#else+#define MP3D_FLAGS_MASK 3+#endif++/* compile-time config */+#define MINIMP3_PREDECODE_FRAMES 2 /* frames to pre-decode and skip after seek (to fill internal structures) */+/*#define MINIMP3_SEEK_IDX_LINEAR_SEARCH*/ /* define to use linear index search instead of binary search on seek */+#define MINIMP3_IO_SIZE (128*1024) /* io buffer size for streaming functions, must be greater than MINIMP3_BUF_SIZE */+#define MINIMP3_BUF_SIZE (16*1024) /* buffer which can hold minimum 10 consecutive mp3 frames (~16KB) worst case */+/*#define MINIMP3_SCAN_LIMIT (256*1024)*/ /* how many bytes will be scanned to search first valid mp3 frame, to prevent stall on large non-mp3 files */+#define MINIMP3_ENABLE_RING 0 /* WIP enable hardware magic ring buffer if available, to make less input buffer memmove(s) in callback IO mode */++/* return error codes */+#define MP3D_E_PARAM -1+#define MP3D_E_MEMORY -2+#define MP3D_E_IOERROR -3+#define MP3D_E_USER -4 /* can be used to stop processing from callbacks without indicating specific error */+#define MP3D_E_DECODE -5 /* decode error which can't be safely skipped, such as sample rate, layer and channels change */++typedef struct+{+ mp3d_sample_t *buffer;+ size_t samples; /* channels included, byte size = samples*sizeof(mp3d_sample_t) */+ int channels, hz, layer, avg_bitrate_kbps;+} mp3dec_file_info_t;++typedef struct+{+ const uint8_t *buffer;+ size_t size;+} mp3dec_map_info_t;++typedef struct+{+ uint64_t sample;+ uint64_t offset;+} mp3dec_frame_t;++typedef struct+{+ mp3dec_frame_t *frames;+ size_t num_frames, capacity;+} mp3dec_index_t;++typedef size_t (*MP3D_READ_CB)(void *buf, size_t size, void *user_data);+typedef int (*MP3D_SEEK_CB)(uint64_t position, void *user_data);++typedef struct+{+ MP3D_READ_CB read;+ void *read_data;+ MP3D_SEEK_CB seek;+ void *seek_data;+} mp3dec_io_t;++typedef struct+{+ mp3dec_t mp3d;+ mp3dec_map_info_t file;+ mp3dec_io_t *io;+ mp3dec_index_t index;+ uint64_t offset, samples, detected_samples, cur_sample, start_offset, end_offset;+ mp3dec_frame_info_t info;+ mp3d_sample_t buffer[MINIMP3_MAX_SAMPLES_PER_FRAME];+ size_t input_consumed, input_filled;+ int is_file, flags, vbr_tag_found, indexes_built;+ int free_format_bytes;+ int buffer_samples, buffer_consumed, to_skip, start_delay;+ int last_error;+} mp3dec_ex_t;++typedef int (*MP3D_ITERATE_CB)(void *user_data, const uint8_t *frame, int frame_size, int free_format_bytes, size_t buf_size, uint64_t offset, mp3dec_frame_info_t *info);+typedef int (*MP3D_PROGRESS_CB)(void *user_data, size_t file_size, uint64_t offset, mp3dec_frame_info_t *info);++#ifdef __cplusplus+extern "C" {+#endif++/* detect mp3/mpa format */+int mp3dec_detect_buf(const uint8_t *buf, size_t buf_size);+int mp3dec_detect_cb(mp3dec_io_t *io, uint8_t *buf, size_t buf_size);+/* decode whole buffer block */+int mp3dec_load_buf(mp3dec_t *dec, const uint8_t *buf, size_t buf_size, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data);+int mp3dec_load_cb(mp3dec_t *dec, mp3dec_io_t *io, uint8_t *buf, size_t buf_size, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data);+/* iterate through frames */+int mp3dec_iterate_buf(const uint8_t *buf, size_t buf_size, MP3D_ITERATE_CB callback, void *user_data);+int mp3dec_iterate_cb(mp3dec_io_t *io, uint8_t *buf, size_t buf_size, MP3D_ITERATE_CB callback, void *user_data);+/* streaming decoder with seeking capability */+int mp3dec_ex_open_buf(mp3dec_ex_t *dec, const uint8_t *buf, size_t buf_size, int flags);+int mp3dec_ex_open_cb(mp3dec_ex_t *dec, mp3dec_io_t *io, int flags);+void mp3dec_ex_close(mp3dec_ex_t *dec);+int mp3dec_ex_seek(mp3dec_ex_t *dec, uint64_t position);+size_t mp3dec_ex_read_frame(mp3dec_ex_t *dec, mp3d_sample_t **buf, mp3dec_frame_info_t *frame_info, size_t max_samples);+size_t mp3dec_ex_read(mp3dec_ex_t *dec, mp3d_sample_t *buf, size_t samples);+#ifndef MINIMP3_NO_STDIO+/* stdio versions of file detect, load, iterate and stream */+int mp3dec_detect(const char *file_name);+int mp3dec_load(mp3dec_t *dec, const char *file_name, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data);+int mp3dec_iterate(const char *file_name, MP3D_ITERATE_CB callback, void *user_data);+int mp3dec_ex_open(mp3dec_ex_t *dec, const char *file_name, int flags);+#ifdef _WIN32+int mp3dec_detect_w(const wchar_t *file_name);+int mp3dec_load_w(mp3dec_t *dec, const wchar_t *file_name, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data);+int mp3dec_iterate_w(const wchar_t *file_name, MP3D_ITERATE_CB callback, void *user_data);+int mp3dec_ex_open_w(mp3dec_ex_t *dec, const wchar_t *file_name, int flags);+#endif+#endif++#ifdef __cplusplus+}+#endif+#endif /*MINIMP3_EXT_H*/++#if defined(MINIMP3_IMPLEMENTATION) && !defined(_MINIMP3_EX_IMPLEMENTATION_GUARD)+#define _MINIMP3_EX_IMPLEMENTATION_GUARD+#include <limits.h>+#include "minimp3.h"++static void mp3dec_skip_id3v1(const uint8_t *buf, size_t *pbuf_size)+{+ size_t buf_size = *pbuf_size;+#ifndef MINIMP3_NOSKIP_ID3V1+ if (buf_size >= 128 && !memcmp(buf + buf_size - 128, "TAG", 3))+ {+ buf_size -= 128;+ if (buf_size >= 227 && !memcmp(buf + buf_size - 227, "TAG+", 4))+ buf_size -= 227;+ }+#endif+#ifndef MINIMP3_NOSKIP_APEV2+ if (buf_size > 32 && !memcmp(buf + buf_size - 32, "APETAGEX", 8))+ {+ buf_size -= 32;+ const uint8_t *tag = buf + buf_size + 8 + 4;+ uint32_t tag_size = (uint32_t)(tag[3] << 24) | (tag[2] << 16) | (tag[1] << 8) | tag[0];+ if (buf_size >= tag_size)+ buf_size -= tag_size;+ }+#endif+ *pbuf_size = buf_size;+}++static size_t mp3dec_skip_id3v2(const uint8_t *buf, size_t buf_size)+{+#define MINIMP3_ID3_DETECT_SIZE 10+#ifndef MINIMP3_NOSKIP_ID3V2+ if (buf_size >= MINIMP3_ID3_DETECT_SIZE && !memcmp(buf, "ID3", 3) && !((buf[5] & 15) || (buf[6] & 0x80) || (buf[7] & 0x80) || (buf[8] & 0x80) || (buf[9] & 0x80)))+ {+ size_t id3v2size = (((buf[6] & 0x7f) << 21) | ((buf[7] & 0x7f) << 14) | ((buf[8] & 0x7f) << 7) | (buf[9] & 0x7f)) + 10;+ if ((buf[5] & 16))+ id3v2size += 10; /* footer */+ return id3v2size;+ }+#endif+ return 0;+}++static void mp3dec_skip_id3(const uint8_t **pbuf, size_t *pbuf_size)+{+ uint8_t *buf = (uint8_t *)(*pbuf);+ size_t buf_size = *pbuf_size;+ size_t id3v2size = mp3dec_skip_id3v2(buf, buf_size);+ if (id3v2size)+ {+ if (id3v2size >= buf_size)+ id3v2size = buf_size;+ buf += id3v2size;+ buf_size -= id3v2size;+ }+ mp3dec_skip_id3v1(buf, &buf_size);+ *pbuf = (const uint8_t *)buf;+ *pbuf_size = buf_size;+}++static int mp3dec_check_vbrtag(const uint8_t *frame, int frame_size, uint32_t *frames, int *delay, int *padding)+{+ static const char g_xing_tag[4] = { 'X', 'i', 'n', 'g' };+ static const char g_info_tag[4] = { 'I', 'n', 'f', 'o' };+#define FRAMES_FLAG 1+#define BYTES_FLAG 2+#define TOC_FLAG 4+#define VBR_SCALE_FLAG 8+ /* Side info offsets after header:+ / Mono Stereo+ / MPEG1 17 32+ / MPEG2 & 2.5 9 17*/+ bs_t bs[1];+ L3_gr_info_t gr_info[4];+ bs_init(bs, frame + HDR_SIZE, frame_size - HDR_SIZE);+ if (HDR_IS_CRC(frame))+ get_bits(bs, 16);+ if (L3_read_side_info(bs, gr_info, frame) < 0)+ return 0; /* side info corrupted */++ const uint8_t *tag = frame + HDR_SIZE + bs->pos/8;+ if (memcmp(g_xing_tag, tag, 4) && memcmp(g_info_tag, tag, 4))+ return 0;+ int flags = tag[7];+ if (!((flags & FRAMES_FLAG)))+ return -1;+ tag += 8;+ *frames = (uint32_t)(tag[0] << 24) | (tag[1] << 16) | (tag[2] << 8) | tag[3];+ tag += 4;+ if (flags & BYTES_FLAG)+ tag += 4;+ if (flags & TOC_FLAG)+ tag += 100;+ if (flags & VBR_SCALE_FLAG)+ tag += 4;+ *delay = *padding = 0;+ if (*tag)+ { /* extension, LAME, Lavc, etc. Should be the same structure. */+ tag += 21;+ if (tag - frame + 14 >= frame_size)+ return 0;+ *delay = ((tag[0] << 4) | (tag[1] >> 4)) + (528 + 1);+ *padding = (((tag[1] & 0xF) << 8) | tag[2]) - (528 + 1);+ }+ return 1;+}++int mp3dec_detect_buf(const uint8_t *buf, size_t buf_size)+{+ return mp3dec_detect_cb(0, (uint8_t *)buf, buf_size);+}++int mp3dec_detect_cb(mp3dec_io_t *io, uint8_t *buf, size_t buf_size)+{+ if (!buf || (size_t)-1 == buf_size || (io && buf_size < MINIMP3_BUF_SIZE))+ return MP3D_E_PARAM;+ size_t filled = buf_size;+ if (io)+ {+ if (io->seek(0, io->seek_data))+ return MP3D_E_IOERROR;+ filled = io->read(buf, MINIMP3_ID3_DETECT_SIZE, io->read_data);+ if (filled > MINIMP3_ID3_DETECT_SIZE)+ return MP3D_E_IOERROR;+ }+ if (filled < MINIMP3_ID3_DETECT_SIZE)+ return MP3D_E_USER; /* too small, can't be mp3/mpa */+ if (mp3dec_skip_id3v2(buf, filled))+ return 0; /* id3v2 tag is enough evidence */+ if (io)+ {+ size_t readed = io->read(buf + MINIMP3_ID3_DETECT_SIZE, buf_size - MINIMP3_ID3_DETECT_SIZE, io->read_data);+ if (readed > (buf_size - MINIMP3_ID3_DETECT_SIZE))+ return MP3D_E_IOERROR;+ filled += readed;+ if (filled < MINIMP3_BUF_SIZE)+ mp3dec_skip_id3v1(buf, &filled);+ } else+ {+ mp3dec_skip_id3v1(buf, &filled);+ if (filled > MINIMP3_BUF_SIZE)+ filled = MINIMP3_BUF_SIZE;+ }+ int free_format_bytes, frame_size;+ mp3d_find_frame(buf, filled, &free_format_bytes, &frame_size);+ if (frame_size)+ return 0; /* MAX_FRAME_SYNC_MATCHES consecutive frames found */+ return MP3D_E_USER;+}++int mp3dec_load_buf(mp3dec_t *dec, const uint8_t *buf, size_t buf_size, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data)+{+ return mp3dec_load_cb(dec, 0, (uint8_t *)buf, buf_size, info, progress_cb, user_data);+}++int mp3dec_load_cb(mp3dec_t *dec, mp3dec_io_t *io, uint8_t *buf, size_t buf_size, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data)+{+ if (!dec || !buf || !info || (size_t)-1 == buf_size || (io && buf_size < MINIMP3_BUF_SIZE))+ return MP3D_E_PARAM;+ uint64_t detected_samples = 0;+ size_t orig_buf_size = buf_size;+ int to_skip = 0;+ mp3dec_frame_info_t frame_info;+ memset(info, 0, sizeof(*info));+ memset(&frame_info, 0, sizeof(frame_info));++ /* skip id3 */+ size_t filled = 0, consumed = 0;+ int eof = 0, ret = 0;+ if (io)+ {+ if (io->seek(0, io->seek_data))+ return MP3D_E_IOERROR;+ filled = io->read(buf, MINIMP3_ID3_DETECT_SIZE, io->read_data);+ if (filled > MINIMP3_ID3_DETECT_SIZE)+ return MP3D_E_IOERROR;+ if (MINIMP3_ID3_DETECT_SIZE != filled)+ return 0;+ size_t id3v2size = mp3dec_skip_id3v2(buf, filled);+ if (id3v2size)+ {+ if (io->seek(id3v2size, io->seek_data))+ return MP3D_E_IOERROR;+ filled = io->read(buf, buf_size, io->read_data);+ if (filled > buf_size)+ return MP3D_E_IOERROR;+ } else+ {+ size_t readed = io->read(buf + MINIMP3_ID3_DETECT_SIZE, buf_size - MINIMP3_ID3_DETECT_SIZE, io->read_data);+ if (readed > (buf_size - MINIMP3_ID3_DETECT_SIZE))+ return MP3D_E_IOERROR;+ filled += readed;+ }+ if (filled < MINIMP3_BUF_SIZE)+ mp3dec_skip_id3v1(buf, &filled);+ } else+ {+ mp3dec_skip_id3((const uint8_t **)&buf, &buf_size);+ if (!buf_size)+ return 0;+ }+ /* try to make allocation size assumption by first frame or vbr tag */+ mp3dec_init(dec);+ int samples;+ do+ {+ uint32_t frames;+ int i, delay, padding, free_format_bytes = 0, frame_size = 0;+ const uint8_t *hdr;+ if (io)+ {+ if (!eof && filled - consumed < MINIMP3_BUF_SIZE)+ { /* keep minimum 10 consecutive mp3 frames (~16KB) worst case */+ memmove(buf, buf + consumed, filled - consumed);+ filled -= consumed;+ consumed = 0;+ size_t readed = io->read(buf + filled, buf_size - filled, io->read_data);+ if (readed > (buf_size - filled))+ return MP3D_E_IOERROR;+ if (readed != (buf_size - filled))+ eof = 1;+ filled += readed;+ if (eof)+ mp3dec_skip_id3v1(buf, &filled);+ }+ i = mp3d_find_frame(buf + consumed, filled - consumed, &free_format_bytes, &frame_size);+ consumed += i;+ hdr = buf + consumed;+ } else+ {+ i = mp3d_find_frame(buf, buf_size, &free_format_bytes, &frame_size);+ buf += i;+ buf_size -= i;+ hdr = buf;+ }+ if (i && !frame_size)+ continue;+ if (!frame_size)+ return 0;+ frame_info.channels = HDR_IS_MONO(hdr) ? 1 : 2;+ frame_info.hz = hdr_sample_rate_hz(hdr);+ frame_info.layer = 4 - HDR_GET_LAYER(hdr);+ frame_info.bitrate_kbps = hdr_bitrate_kbps(hdr);+ frame_info.frame_bytes = frame_size;+ samples = hdr_frame_samples(hdr)*frame_info.channels;+ if (3 != frame_info.layer)+ break;+ int ret = mp3dec_check_vbrtag(hdr, frame_size, &frames, &delay, &padding);+ if (ret > 0)+ {+ padding *= frame_info.channels;+ to_skip = delay*frame_info.channels;+ detected_samples = samples*(uint64_t)frames;+ if (detected_samples >= (uint64_t)to_skip)+ detected_samples -= to_skip;+ if (padding > 0 && detected_samples >= (uint64_t)padding)+ detected_samples -= padding;+ if (!detected_samples)+ return 0;+ }+ if (ret)+ {+ if (io)+ {+ consumed += frame_size;+ } else+ {+ buf += frame_size;+ buf_size -= frame_size;+ }+ }+ break;+ } while(1);+ size_t allocated = MINIMP3_MAX_SAMPLES_PER_FRAME*sizeof(mp3d_sample_t);+ if (detected_samples)+ allocated += detected_samples*sizeof(mp3d_sample_t);+ else+ allocated += (buf_size/frame_info.frame_bytes)*samples*sizeof(mp3d_sample_t);+ info->buffer = (mp3d_sample_t*)malloc(allocated);+ if (!info->buffer)+ return MP3D_E_MEMORY;+ /* save info */+ info->channels = frame_info.channels;+ info->hz = frame_info.hz;+ info->layer = frame_info.layer;+ /* decode all frames */+ size_t avg_bitrate_kbps = 0, frames = 0;+ do+ {+ if ((allocated - info->samples*sizeof(mp3d_sample_t)) < MINIMP3_MAX_SAMPLES_PER_FRAME*sizeof(mp3d_sample_t))+ {+ allocated *= 2;+ mp3d_sample_t *alloc_buf = (mp3d_sample_t*)realloc(info->buffer, allocated);+ if (!alloc_buf)+ return MP3D_E_MEMORY;+ info->buffer = alloc_buf;+ }+ if (io)+ {+ if (!eof && filled - consumed < MINIMP3_BUF_SIZE)+ { /* keep minimum 10 consecutive mp3 frames (~16KB) worst case */+ memmove(buf, buf + consumed, filled - consumed);+ filled -= consumed;+ consumed = 0;+ size_t readed = io->read(buf + filled, buf_size - filled, io->read_data);+ if (readed != (buf_size - filled))+ eof = 1;+ filled += readed;+ if (eof)+ mp3dec_skip_id3v1(buf, &filled);+ }+ samples = mp3dec_decode_frame(dec, buf + consumed, filled - consumed, info->buffer + info->samples, &frame_info);+ consumed += frame_info.frame_bytes;+ } else+ {+ samples = mp3dec_decode_frame(dec, buf, MINIMP3_MIN(buf_size, (size_t)INT_MAX), info->buffer + info->samples, &frame_info);+ buf += frame_info.frame_bytes;+ buf_size -= frame_info.frame_bytes;+ }+ if (samples)+ {+ if (info->hz != frame_info.hz || info->layer != frame_info.layer)+ {+ ret = MP3D_E_DECODE;+ break;+ }+ if (info->channels && info->channels != frame_info.channels)+ {+#ifdef MINIMP3_ALLOW_MONO_STEREO_TRANSITION+ info->channels = 0; /* mark file with mono-stereo transition */+#else+ ret = MP3D_E_DECODE;+ break;+#endif+ }+ samples *= frame_info.channels;+ if (to_skip)+ {+ size_t skip = MINIMP3_MIN(samples, to_skip);+ to_skip -= skip;+ samples -= skip;+ memmove(info->buffer, info->buffer + skip, samples*sizeof(mp3d_sample_t));+ }+ info->samples += samples;+ avg_bitrate_kbps += frame_info.bitrate_kbps;+ frames++;+ if (progress_cb)+ {+ ret = progress_cb(user_data, orig_buf_size, orig_buf_size - buf_size, &frame_info);+ if (ret)+ break;+ }+ }+ } while (frame_info.frame_bytes);+ if (detected_samples && info->samples > detected_samples)+ info->samples = detected_samples; /* cut padding */+ /* reallocate to normal buffer size */+ if (allocated != info->samples*sizeof(mp3d_sample_t))+ {+ mp3d_sample_t *alloc_buf = (mp3d_sample_t*)realloc(info->buffer, info->samples*sizeof(mp3d_sample_t));+ if (!alloc_buf && info->samples)+ return MP3D_E_MEMORY;+ info->buffer = alloc_buf;+ }+ if (frames)+ info->avg_bitrate_kbps = avg_bitrate_kbps/frames;+ return ret;+}++int mp3dec_iterate_buf(const uint8_t *buf, size_t buf_size, MP3D_ITERATE_CB callback, void *user_data)+{+ const uint8_t *orig_buf = buf;+ if (!buf || (size_t)-1 == buf_size || !callback)+ return MP3D_E_PARAM;+ /* skip id3 */+ mp3dec_skip_id3(&buf, &buf_size);+ if (!buf_size)+ return 0;+ mp3dec_frame_info_t frame_info;+ memset(&frame_info, 0, sizeof(frame_info));+ do+ {+ int free_format_bytes = 0, frame_size = 0, ret;+ int i = mp3d_find_frame(buf, buf_size, &free_format_bytes, &frame_size);+ buf += i;+ buf_size -= i;+ if (i && !frame_size)+ continue;+ if (!frame_size)+ break;+ const uint8_t *hdr = buf;+ frame_info.channels = HDR_IS_MONO(hdr) ? 1 : 2;+ frame_info.hz = hdr_sample_rate_hz(hdr);+ frame_info.layer = 4 - HDR_GET_LAYER(hdr);+ frame_info.bitrate_kbps = hdr_bitrate_kbps(hdr);+ frame_info.frame_bytes = frame_size;++ if (callback)+ {+ if ((ret = callback(user_data, hdr, frame_size, free_format_bytes, buf_size, hdr - orig_buf, &frame_info)))+ return ret;+ }+ buf += frame_size;+ buf_size -= frame_size;+ } while (1);+ return 0;+}++int mp3dec_iterate_cb(mp3dec_io_t *io, uint8_t *buf, size_t buf_size, MP3D_ITERATE_CB callback, void *user_data)+{+ if (!io || !buf || (size_t)-1 == buf_size || buf_size < MINIMP3_BUF_SIZE || !callback)+ return MP3D_E_PARAM;+ size_t filled = io->read(buf, MINIMP3_ID3_DETECT_SIZE, io->read_data), consumed = 0;+ uint64_t readed = 0;+ mp3dec_frame_info_t frame_info;+ int eof = 0;+ memset(&frame_info, 0, sizeof(frame_info));+ if (filled > MINIMP3_ID3_DETECT_SIZE)+ return MP3D_E_IOERROR;+ if (MINIMP3_ID3_DETECT_SIZE != filled)+ return 0;+ size_t id3v2size = mp3dec_skip_id3v2(buf, filled);+ if (id3v2size)+ {+ if (io->seek(id3v2size, io->seek_data))+ return MP3D_E_IOERROR;+ filled = io->read(buf, buf_size, io->read_data);+ if (filled > buf_size)+ return MP3D_E_IOERROR;+ readed += id3v2size;+ } else+ {+ size_t readed = io->read(buf + MINIMP3_ID3_DETECT_SIZE, buf_size - MINIMP3_ID3_DETECT_SIZE, io->read_data);+ if (readed > (buf_size - MINIMP3_ID3_DETECT_SIZE))+ return MP3D_E_IOERROR;+ filled += readed;+ }+ if (filled < MINIMP3_BUF_SIZE)+ mp3dec_skip_id3v1(buf, &filled);+ do+ {+ int free_format_bytes = 0, frame_size = 0, ret;+ int i = mp3d_find_frame(buf + consumed, filled - consumed, &free_format_bytes, &frame_size);+ if (i && !frame_size)+ {+ consumed += i;+ continue;+ }+ if (!frame_size)+ break;+ const uint8_t *hdr = buf + consumed + i;+ frame_info.channels = HDR_IS_MONO(hdr) ? 1 : 2;+ frame_info.hz = hdr_sample_rate_hz(hdr);+ frame_info.layer = 4 - HDR_GET_LAYER(hdr);+ frame_info.bitrate_kbps = hdr_bitrate_kbps(hdr);+ frame_info.frame_bytes = frame_size;++ readed += i;+ if (callback)+ {+ if ((ret = callback(user_data, hdr, frame_size, free_format_bytes, filled - consumed, readed, &frame_info)))+ return ret;+ }+ readed += frame_size;+ consumed += i + frame_size;+ if (!eof && filled - consumed < MINIMP3_BUF_SIZE)+ { /* keep minimum 10 consecutive mp3 frames (~16KB) worst case */+ memmove(buf, buf + consumed, filled - consumed);+ filled -= consumed;+ consumed = 0;+ size_t readed = io->read(buf + filled, buf_size - filled, io->read_data);+ if (readed > (buf_size - filled))+ return MP3D_E_IOERROR;+ if (readed != (buf_size - filled))+ eof = 1;+ filled += readed;+ if (eof)+ mp3dec_skip_id3v1(buf, &filled);+ }+ } while (1);+ return 0;+}++static int mp3dec_load_index(void *user_data, const uint8_t *frame, int frame_size, int free_format_bytes, size_t buf_size, uint64_t offset, mp3dec_frame_info_t *info)+{+ mp3dec_frame_t *idx_frame;+ mp3dec_ex_t *dec = (mp3dec_ex_t *)user_data;+ if (!dec->index.frames && !dec->start_offset)+ { /* detect VBR tag and try to avoid full scan */+ uint32_t frames;+ int delay, padding;+ dec->info = *info;+ dec->start_offset = dec->offset = offset;+ dec->end_offset = offset + buf_size;+ dec->free_format_bytes = free_format_bytes; /* should not change */+ if (3 == dec->info.layer)+ {+ int ret = mp3dec_check_vbrtag(frame, frame_size, &frames, &delay, &padding);+ if (ret)+ dec->start_offset = dec->offset = offset + frame_size;+ if (ret > 0)+ {+ padding *= info->channels;+ dec->start_delay = dec->to_skip = delay*info->channels;+ dec->samples = hdr_frame_samples(frame)*info->channels*(uint64_t)frames;+ if (dec->samples >= (uint64_t)dec->start_delay)+ dec->samples -= dec->start_delay;+ if (padding > 0 && dec->samples >= (uint64_t)padding)+ dec->samples -= padding;+ dec->detected_samples = dec->samples;+ dec->vbr_tag_found = 1;+ return MP3D_E_USER;+ } else if (ret < 0)+ return 0;+ }+ }+ if (dec->flags & MP3D_DO_NOT_SCAN)+ return MP3D_E_USER;+ if (dec->index.num_frames + 1 > dec->index.capacity)+ {+ if (!dec->index.capacity)+ dec->index.capacity = 4096;+ else+ dec->index.capacity *= 2;+ mp3dec_frame_t *alloc_buf = (mp3dec_frame_t *)realloc((void*)dec->index.frames, sizeof(mp3dec_frame_t)*dec->index.capacity);+ if (!alloc_buf)+ return MP3D_E_MEMORY;+ dec->index.frames = alloc_buf;+ }+ idx_frame = &dec->index.frames[dec->index.num_frames++];+ idx_frame->offset = offset;+ idx_frame->sample = dec->samples;+ if (!dec->buffer_samples && dec->index.num_frames < 256)+ { /* for some cutted mp3 frames, bit-reservoir not filled and decoding can't be started from first frames */+ /* try to decode up to 255 first frames till samples starts to decode */+ dec->buffer_samples = mp3dec_decode_frame(&dec->mp3d, frame, MINIMP3_MIN(buf_size, (size_t)INT_MAX), dec->buffer, info);+ dec->samples += dec->buffer_samples*info->channels;+ } else+ dec->samples += hdr_frame_samples(frame)*info->channels;+ return 0;+}++int mp3dec_ex_open_buf(mp3dec_ex_t *dec, const uint8_t *buf, size_t buf_size, int flags)+{+ if (!dec || !buf || (size_t)-1 == buf_size || (flags & (~MP3D_FLAGS_MASK)))+ return MP3D_E_PARAM;+ memset(dec, 0, sizeof(*dec));+ dec->file.buffer = buf;+ dec->file.size = buf_size;+ dec->flags = flags;+ mp3dec_init(&dec->mp3d);+ int ret = mp3dec_iterate_buf(dec->file.buffer, dec->file.size, mp3dec_load_index, dec);+ if (ret && MP3D_E_USER != ret)+ return ret;+ mp3dec_init(&dec->mp3d);+ dec->buffer_samples = 0;+ dec->indexes_built = !(dec->vbr_tag_found || (flags & MP3D_DO_NOT_SCAN));+ dec->flags &= (~MP3D_DO_NOT_SCAN);+ return 0;+}++#ifndef MINIMP3_SEEK_IDX_LINEAR_SEARCH+static size_t mp3dec_idx_binary_search(mp3dec_index_t *idx, uint64_t position)+{+ size_t end = idx->num_frames, start = 0, index = 0;+ while (start <= end)+ {+ size_t mid = (start + end) / 2;+ if (idx->frames[mid].sample >= position)+ { /* move left side. */+ if (idx->frames[mid].sample == position)+ return mid;+ end = mid - 1;+ } else+ { /* move to right side */+ index = mid;+ start = mid + 1;+ if (start == idx->num_frames)+ break;+ }+ }+ return index;+}+#endif++int mp3dec_ex_seek(mp3dec_ex_t *dec, uint64_t position)+{+ size_t i;+ if (!dec)+ return MP3D_E_PARAM;+ if (!(dec->flags & MP3D_SEEK_TO_SAMPLE))+ {+ if (dec->io)+ {+ dec->offset = position;+ } else+ {+ dec->offset = MINIMP3_MIN(position, dec->file.size);+ }+ dec->cur_sample = 0;+ goto do_exit;+ }+ dec->cur_sample = position;+ position += dec->start_delay;+ if (0 == position)+ { /* optimize seek to zero, no index needed */+seek_zero:+ dec->offset = dec->start_offset;+ dec->to_skip = 0;+ goto do_exit;+ }+ if (!dec->indexes_built)+ { /* no index created yet (vbr tag used to calculate track length or MP3D_DO_NOT_SCAN open flag used) */+ dec->indexes_built = 1;+ dec->samples = 0;+ dec->buffer_samples = 0;+ if (dec->io)+ {+ if (dec->io->seek(dec->start_offset, dec->io->seek_data))+ return MP3D_E_IOERROR;+ int ret = mp3dec_iterate_cb(dec->io, (uint8_t *)dec->file.buffer, dec->file.size, mp3dec_load_index, dec);+ if (ret && MP3D_E_USER != ret)+ return ret;+ } else+ {+ int ret = mp3dec_iterate_buf(dec->file.buffer + dec->start_offset, dec->file.size - dec->start_offset, mp3dec_load_index, dec);+ if (ret && MP3D_E_USER != ret)+ return ret;+ }+ for (i = 0; i < dec->index.num_frames; i++)+ dec->index.frames[i].offset += dec->start_offset;+ dec->samples = dec->detected_samples;+ }+ if (!dec->index.frames)+ goto seek_zero; /* no frames in file - seek to zero */+#ifdef MINIMP3_SEEK_IDX_LINEAR_SEARCH+ for (i = 0; i < dec->index.num_frames; i++)+ {+ if (dec->index.frames[i].sample >= position)+ break;+ }+#else+ i = mp3dec_idx_binary_search(&dec->index, position);+#endif+ if (i)+ {+ int to_fill_bytes = 511;+ int skip_frames = MINIMP3_PREDECODE_FRAMES+#ifdef MINIMP3_SEEK_IDX_LINEAR_SEARCH+ + ((dec->index.frames[i].sample == position) ? 0 : 1)+#endif+ ;+ i -= MINIMP3_MIN(i, (size_t)skip_frames);+ if (3 == dec->info.layer)+ {+ while (i && to_fill_bytes)+ { /* make sure bit-reservoir is filled when we start decoding */+ bs_t bs[1];+ L3_gr_info_t gr_info[4];+ int frame_bytes, frame_size;+ const uint8_t *hdr;+ if (dec->io)+ {+ hdr = dec->file.buffer;+ if (dec->io->seek(dec->index.frames[i - 1].offset, dec->io->seek_data))+ return MP3D_E_IOERROR;+ size_t readed = dec->io->read((uint8_t *)hdr, HDR_SIZE, dec->io->read_data);+ if (readed != HDR_SIZE)+ return MP3D_E_IOERROR;+ frame_size = hdr_frame_bytes(hdr, dec->free_format_bytes) + hdr_padding(hdr);+ readed = dec->io->read((uint8_t *)hdr + HDR_SIZE, frame_size - HDR_SIZE, dec->io->read_data);+ if (readed != (size_t)(frame_size - HDR_SIZE))+ return MP3D_E_IOERROR;+ bs_init(bs, hdr + HDR_SIZE, frame_size - HDR_SIZE);+ } else+ {+ hdr = dec->file.buffer + dec->index.frames[i - 1].offset;+ frame_size = hdr_frame_bytes(hdr, dec->free_format_bytes) + hdr_padding(hdr);+ bs_init(bs, hdr + HDR_SIZE, frame_size - HDR_SIZE);+ }+ if (HDR_IS_CRC(hdr))+ get_bits(bs, 16);+ i--;+ if (L3_read_side_info(bs, gr_info, hdr) < 0)+ break; /* frame not decodable, we can start from here */+ frame_bytes = (bs->limit - bs->pos)/8;+ to_fill_bytes -= MINIMP3_MIN(to_fill_bytes, frame_bytes);+ }+ }+ }+ dec->offset = dec->index.frames[i].offset;+ dec->to_skip = position - dec->index.frames[i].sample;+ while ((i + 1) < dec->index.num_frames && !dec->index.frames[i].sample && !dec->index.frames[i + 1].sample)+ { /* skip not decodable first frames */+ const uint8_t *hdr;+ if (dec->io)+ {+ hdr = dec->file.buffer;+ if (dec->io->seek(dec->index.frames[i].offset, dec->io->seek_data))+ return MP3D_E_IOERROR;+ size_t readed = dec->io->read((uint8_t *)hdr, HDR_SIZE, dec->io->read_data);+ if (readed != HDR_SIZE)+ return MP3D_E_IOERROR;+ } else+ hdr = dec->file.buffer + dec->index.frames[i].offset;+ dec->to_skip += hdr_frame_samples(hdr)*dec->info.channels;+ i++;+ }+do_exit:+ if (dec->io)+ {+ if (dec->io->seek(dec->offset, dec->io->seek_data))+ return MP3D_E_IOERROR;+ }+ dec->buffer_samples = 0;+ dec->buffer_consumed = 0;+ dec->input_consumed = 0;+ dec->input_filled = 0;+ dec->last_error = 0;+ mp3dec_init(&dec->mp3d);+ return 0;+}++size_t mp3dec_ex_read_frame(mp3dec_ex_t *dec, mp3d_sample_t **buf, mp3dec_frame_info_t *frame_info, size_t max_samples)+{+ if (!dec || !buf || !frame_info)+ {+ if (dec)+ dec->last_error = MP3D_E_PARAM;+ return 0;+ }+ if (dec->detected_samples && dec->cur_sample >= dec->detected_samples)+ return 0; /* at end of stream */+ if (dec->last_error)+ return 0; /* error eof state, seek can reset it */+ *buf = NULL;+ uint64_t end_offset = dec->end_offset ? dec->end_offset : dec->file.size;+ int eof = 0;+ while (dec->buffer_consumed == dec->buffer_samples)+ {+ const uint8_t *dec_buf;+ if (dec->io)+ {+ if (!eof && (dec->input_filled - dec->input_consumed) < MINIMP3_BUF_SIZE)+ { /* keep minimum 10 consecutive mp3 frames (~16KB) worst case */+ memmove((uint8_t*)dec->file.buffer, (uint8_t*)dec->file.buffer + dec->input_consumed, dec->input_filled - dec->input_consumed);+ dec->input_filled -= dec->input_consumed;+ dec->input_consumed = 0;+ size_t readed = dec->io->read((uint8_t*)dec->file.buffer + dec->input_filled, dec->file.size - dec->input_filled, dec->io->read_data);+ if (readed > (dec->file.size - dec->input_filled))+ {+ dec->last_error = MP3D_E_IOERROR;+ readed = 0;+ }+ if (readed != (dec->file.size - dec->input_filled))+ eof = 1;+ dec->input_filled += readed;+ if (eof)+ mp3dec_skip_id3v1((uint8_t*)dec->file.buffer, &dec->input_filled);+ }+ dec_buf = dec->file.buffer + dec->input_consumed;+ if (!(dec->input_filled - dec->input_consumed))+ return 0;+ dec->buffer_samples = mp3dec_decode_frame(&dec->mp3d, dec_buf, dec->input_filled - dec->input_consumed, dec->buffer, frame_info);+ dec->input_consumed += frame_info->frame_bytes;+ } else+ {+ dec_buf = dec->file.buffer + dec->offset;+ uint64_t buf_size = end_offset - dec->offset;+ if (!buf_size)+ return 0;+ dec->buffer_samples = mp3dec_decode_frame(&dec->mp3d, dec_buf, MINIMP3_MIN(buf_size, (uint64_t)INT_MAX), dec->buffer, frame_info);+ }+ dec->buffer_consumed = 0;+ if (dec->info.hz != frame_info->hz || dec->info.layer != frame_info->layer)+ {+return_e_decode:+ dec->last_error = MP3D_E_DECODE;+ return 0;+ }+ if (dec->buffer_samples)+ {+ dec->buffer_samples *= frame_info->channels;+ if (dec->to_skip)+ {+ size_t skip = MINIMP3_MIN(dec->buffer_samples, dec->to_skip);+ dec->buffer_consumed += skip;+ dec->to_skip -= skip;+ }+ if (+#ifdef MINIMP3_ALLOW_MONO_STEREO_TRANSITION+ !(dec->flags & MP3D_ALLOW_MONO_STEREO_TRANSITION) &&+#endif+ dec->buffer_consumed != dec->buffer_samples && dec->info.channels != frame_info->channels)+ {+ goto return_e_decode;+ }+ } else if (dec->to_skip)+ { /* In mp3 decoding not always can start decode from any frame because of bit reservoir,+ count skip samples for such frames */+ int frame_samples = hdr_frame_samples(dec_buf)*frame_info->channels;+ dec->to_skip -= MINIMP3_MIN(frame_samples, dec->to_skip);+ }+ dec->offset += frame_info->frame_bytes;+ }+ size_t out_samples = MINIMP3_MIN((size_t)(dec->buffer_samples - dec->buffer_consumed), max_samples);+ if (dec->detected_samples)+ { /* count decoded samples to properly cut padding */+ if (dec->cur_sample + out_samples >= dec->detected_samples)+ out_samples = dec->detected_samples - dec->cur_sample;+ }+ dec->cur_sample += out_samples;+ *buf = dec->buffer + dec->buffer_consumed;+ dec->buffer_consumed += out_samples;+ return out_samples;+}++size_t mp3dec_ex_read(mp3dec_ex_t *dec, mp3d_sample_t *buf, size_t samples)+{+ if (!dec || !buf)+ {+ if (dec)+ dec->last_error = MP3D_E_PARAM;+ return 0;+ }+ mp3dec_frame_info_t frame_info;+ memset(&frame_info, 0, sizeof(frame_info));+ size_t samples_requested = samples;+ while (samples)+ {+ mp3d_sample_t *buf_frame = NULL;+ size_t read_samples = mp3dec_ex_read_frame(dec, &buf_frame, &frame_info, samples);+ if (!read_samples)+ {+ break;+ }+ memcpy(buf, buf_frame, read_samples * sizeof(mp3d_sample_t));+ buf += read_samples;+ samples -= read_samples;+ }+ return samples_requested - samples;+}++int mp3dec_ex_open_cb(mp3dec_ex_t *dec, mp3dec_io_t *io, int flags)+{+ if (!dec || !io || (flags & (~MP3D_FLAGS_MASK)))+ return MP3D_E_PARAM;+ memset(dec, 0, sizeof(*dec));+#ifdef MINIMP3_HAVE_RING+ int ret;+ if (ret = mp3dec_open_ring(&dec->file, MINIMP3_IO_SIZE))+ return ret;+#else+ dec->file.size = MINIMP3_IO_SIZE;+ dec->file.buffer = (const uint8_t*)malloc(dec->file.size);+ if (!dec->file.buffer)+ return MP3D_E_MEMORY;+#endif+ dec->flags = flags;+ dec->io = io;+ mp3dec_init(&dec->mp3d);+ if (io->seek(0, io->seek_data))+ return MP3D_E_IOERROR;+ int ret = mp3dec_iterate_cb(io, (uint8_t *)dec->file.buffer, dec->file.size, mp3dec_load_index, dec);+ if (ret && MP3D_E_USER != ret)+ return ret;+ if (dec->io->seek(dec->start_offset, dec->io->seek_data))+ return MP3D_E_IOERROR;+ mp3dec_init(&dec->mp3d);+ dec->buffer_samples = 0;+ dec->indexes_built = !(dec->vbr_tag_found || (flags & MP3D_DO_NOT_SCAN));+ dec->flags &= (~MP3D_DO_NOT_SCAN);+ return 0;+}+++#ifndef MINIMP3_NO_STDIO++#if defined(__linux__) || defined(__FreeBSD__)+#include <errno.h>+#include <sys/mman.h>+#include <sys/types.h>+#include <sys/stat.h>+#include <unistd.h>+#include <fcntl.h>+#if !defined(_GNU_SOURCE)+#include <sys/ipc.h>+#include <sys/shm.h>+#endif+#if !defined(MAP_POPULATE) && defined(__linux__)+#define MAP_POPULATE 0x08000+#elif !defined(MAP_POPULATE)+#define MAP_POPULATE 0+#endif++static void mp3dec_close_file(mp3dec_map_info_t *map_info)+{+ if (map_info->buffer && MAP_FAILED != map_info->buffer)+ munmap((void *)map_info->buffer, map_info->size);+ map_info->buffer = 0;+ map_info->size = 0;+}++static int mp3dec_open_file(const char *file_name, mp3dec_map_info_t *map_info)+{+ if (!file_name)+ return MP3D_E_PARAM;+ int file;+ struct stat st;+ memset(map_info, 0, sizeof(*map_info));+retry_open:+ file = open(file_name, O_RDONLY);+ if (file < 0 && (errno == EAGAIN || errno == EINTR))+ goto retry_open;+ if (file < 0 || fstat(file, &st) < 0)+ {+ close(file);+ return MP3D_E_IOERROR;+ }++ map_info->size = st.st_size;+retry_mmap:+ map_info->buffer = (const uint8_t *)mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE | MAP_POPULATE, file, 0);+ if (MAP_FAILED == map_info->buffer && (errno == EAGAIN || errno == EINTR))+ goto retry_mmap;+ close(file);+ if (MAP_FAILED == map_info->buffer)+ return MP3D_E_IOERROR;+ return 0;+}++#if MINIMP3_ENABLE_RING && defined(__linux__) && defined(_GNU_SOURCE)+#define MINIMP3_HAVE_RING+static void mp3dec_close_ring(mp3dec_map_info_t *map_info)+{+#if defined(__linux__) && defined(_GNU_SOURCE)+ if (map_info->buffer && MAP_FAILED != map_info->buffer)+ munmap((void *)map_info->buffer, map_info->size*2);+#else+ if (map_info->buffer)+ {+ shmdt(map_info->buffer);+ shmdt(map_info->buffer + map_info->size);+ }+#endif+ map_info->buffer = 0;+ map_info->size = 0;+}++static int mp3dec_open_ring(mp3dec_map_info_t *map_info, size_t size)+{+ int memfd, page_size;+#if defined(__linux__) && defined(_GNU_SOURCE)+ void *buffer;+ int res;+#endif+ memset(map_info, 0, sizeof(*map_info));++#ifdef _SC_PAGESIZE+ page_size = sysconf(_SC_PAGESIZE);+#else+ page_size = getpagesize();+#endif+ map_info->size = (size + page_size - 1)/page_size*page_size;++#if defined(__linux__) && defined(_GNU_SOURCE)+ memfd = memfd_create("mp3_ring", 0);+ if (memfd < 0)+ return MP3D_E_MEMORY;++retry_ftruncate:+ res = ftruncate(memfd, map_info->size);+ if (res && (errno == EAGAIN || errno == EINTR))+ goto retry_ftruncate;+ if (res)+ goto error;++retry_mmap:+ map_info->buffer = (const uint8_t *)mmap(NULL, map_info->size*2, PROT_NONE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);+ if (MAP_FAILED == map_info->buffer && (errno == EAGAIN || errno == EINTR))+ goto retry_mmap;+ if (MAP_FAILED == map_info->buffer || !map_info->buffer)+ goto error;+retry_mmap2:+ buffer = mmap((void *)map_info->buffer, map_info->size, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_SHARED, memfd, 0);+ if (MAP_FAILED == map_info->buffer && (errno == EAGAIN || errno == EINTR))+ goto retry_mmap2;+ if (MAP_FAILED == map_info->buffer || buffer != (void *)map_info->buffer)+ goto error;+retry_mmap3:+ buffer = mmap((void *)map_info->buffer + map_info->size, map_info->size, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_SHARED, memfd, 0);+ if (MAP_FAILED == map_info->buffer && (errno == EAGAIN || errno == EINTR))+ goto retry_mmap3;+ if (MAP_FAILED == map_info->buffer || buffer != (void *)(map_info->buffer + map_info->size))+ goto error;++ close(memfd);+ return 0;+error:+ close(memfd);+ mp3dec_close_ring(map_info);+ return MP3D_E_MEMORY;+#else+ memfd = shmget(IPC_PRIVATE, map_info->size, IPC_CREAT | 0700);+ if (memfd < 0)+ return MP3D_E_MEMORY;+retry_mmap:+ map_info->buffer = (const uint8_t *)mmap(NULL, map_info->size*2, PROT_NONE, MAP_PRIVATE, -1, 0);+ if (MAP_FAILED == map_info->buffer && (errno == EAGAIN || errno == EINTR))+ goto retry_mmap;+ if (MAP_FAILED == map_info->buffer)+ goto error;+ if (map_info->buffer != shmat(memfd, map_info->buffer, 0))+ goto error;+ if ((map_info->buffer + map_info->size) != shmat(memfd, map_info->buffer + map_info->size, 0))+ goto error;+ if (shmctl(memfd, IPC_RMID, NULL) < 0)+ return MP3D_E_MEMORY;+ return 0;+error:+ shmctl(memfd, IPC_RMID, NULL);+ mp3dec_close_ring(map_info);+ return MP3D_E_MEMORY;+#endif+}+#endif /*MINIMP3_ENABLE_RING*/+#elif defined(_WIN32)+#include <windows.h>++static void mp3dec_close_file(mp3dec_map_info_t *map_info)+{+ if (map_info->buffer)+ UnmapViewOfFile(map_info->buffer);+ map_info->buffer = 0;+ map_info->size = 0;+}++static int mp3dec_open_file_h(HANDLE file, mp3dec_map_info_t *map_info)+{+ memset(map_info, 0, sizeof(*map_info));++ HANDLE mapping = NULL;+ LARGE_INTEGER s;+ s.LowPart = GetFileSize(file, (DWORD*)&s.HighPart);+ if (s.LowPart == INVALID_FILE_SIZE && GetLastError() != NO_ERROR)+ goto error;+ map_info->size = s.QuadPart;++ mapping = CreateFileMapping(file, NULL, PAGE_READONLY, 0, 0, NULL);+ if (!mapping)+ goto error;+ map_info->buffer = (const uint8_t*)MapViewOfFile(mapping, FILE_MAP_READ, 0, 0, s.QuadPart);+ CloseHandle(mapping);+ if (!map_info->buffer)+ goto error;++ CloseHandle(file);+ return 0;+error:+ mp3dec_close_file(map_info);+ CloseHandle(file);+ return MP3D_E_IOERROR;+}++static int mp3dec_open_file(const char *file_name, mp3dec_map_info_t *map_info)+{+ if (!file_name)+ return MP3D_E_PARAM;+ HANDLE file = CreateFileA(file_name, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);+ if (INVALID_HANDLE_VALUE == file)+ return MP3D_E_IOERROR;+ return mp3dec_open_file_h(file, map_info);+}++static int mp3dec_open_file_w(const wchar_t *file_name, mp3dec_map_info_t *map_info)+{+ if (!file_name)+ return MP3D_E_PARAM;+ HANDLE file = CreateFileW(file_name, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);+ if (INVALID_HANDLE_VALUE == file)+ return MP3D_E_IOERROR;+ return mp3dec_open_file_h(file, map_info);+}+#else+#include <stdio.h>++static void mp3dec_close_file(mp3dec_map_info_t *map_info)+{+ if (map_info->buffer)+ free((void *)map_info->buffer);+ map_info->buffer = 0;+ map_info->size = 0;+}++static int mp3dec_open_file(const char *file_name, mp3dec_map_info_t *map_info)+{+ if (!file_name)+ return MP3D_E_PARAM;+ memset(map_info, 0, sizeof(*map_info));+ FILE *file = fopen(file_name, "rb");+ if (!file)+ return MP3D_E_IOERROR;+ int res = MP3D_E_IOERROR;+ long size = -1;+ if (fseek(file, 0, SEEK_END))+ goto error;+ size = ftell(file);+ if (size < 0)+ goto error;+ map_info->size = (size_t)size;+ if (fseek(file, 0, SEEK_SET))+ goto error;+ map_info->buffer = (uint8_t *)malloc(map_info->size);+ if (!map_info->buffer)+ {+ res = MP3D_E_MEMORY;+ goto error;+ }+ if (fread((void *)map_info->buffer, 1, map_info->size, file) != map_info->size)+ goto error;+ fclose(file);+ return 0;+error:+ mp3dec_close_file(map_info);+ fclose(file);+ return res;+}+#endif++static int mp3dec_detect_mapinfo(mp3dec_map_info_t *map_info)+{+ int ret = mp3dec_detect_buf(map_info->buffer, map_info->size);+ mp3dec_close_file(map_info);+ return ret;+}++static int mp3dec_load_mapinfo(mp3dec_t *dec, mp3dec_map_info_t *map_info, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data)+{+ int ret = mp3dec_load_buf(dec, map_info->buffer, map_info->size, info, progress_cb, user_data);+ mp3dec_close_file(map_info);+ return ret;+}++static int mp3dec_iterate_mapinfo(mp3dec_map_info_t *map_info, MP3D_ITERATE_CB callback, void *user_data)+{+ int ret = mp3dec_iterate_buf(map_info->buffer, map_info->size, callback, user_data);+ mp3dec_close_file(map_info);+ return ret;+}++static int mp3dec_ex_open_mapinfo(mp3dec_ex_t *dec, int flags)+{+ int ret = mp3dec_ex_open_buf(dec, dec->file.buffer, dec->file.size, flags);+ dec->is_file = 1;+ if (ret)+ mp3dec_ex_close(dec);+ return ret;+}++int mp3dec_detect(const char *file_name)+{+ int ret;+ mp3dec_map_info_t map_info;+ if ((ret = mp3dec_open_file(file_name, &map_info)))+ return ret;+ return mp3dec_detect_mapinfo(&map_info);+}++int mp3dec_load(mp3dec_t *dec, const char *file_name, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data)+{+ int ret;+ mp3dec_map_info_t map_info;+ if ((ret = mp3dec_open_file(file_name, &map_info)))+ return ret;+ return mp3dec_load_mapinfo(dec, &map_info, info, progress_cb, user_data);+}++int mp3dec_iterate(const char *file_name, MP3D_ITERATE_CB callback, void *user_data)+{+ int ret;+ mp3dec_map_info_t map_info;+ if ((ret = mp3dec_open_file(file_name, &map_info)))+ return ret;+ return mp3dec_iterate_mapinfo(&map_info, callback, user_data);+}++int mp3dec_ex_open(mp3dec_ex_t *dec, const char *file_name, int flags)+{+ int ret;+ if (!dec)+ return MP3D_E_PARAM;+ if ((ret = mp3dec_open_file(file_name, &dec->file)))+ return ret;+ return mp3dec_ex_open_mapinfo(dec, flags);+}++void mp3dec_ex_close(mp3dec_ex_t *dec)+{+#ifdef MINIMP3_HAVE_RING+ if (dec->io)+ mp3dec_close_ring(&dec->file);+#else+ if (dec->io && dec->file.buffer)+ free((void*)dec->file.buffer);+#endif+ if (dec->is_file)+ mp3dec_close_file(&dec->file);+ if (dec->index.frames)+ free(dec->index.frames);+ memset(dec, 0, sizeof(*dec));+}++#ifdef _WIN32+int mp3dec_detect_w(const wchar_t *file_name)+{+ int ret;+ mp3dec_map_info_t map_info;+ if ((ret = mp3dec_open_file_w(file_name, &map_info)))+ return ret;+ return mp3dec_detect_mapinfo(&map_info);+}++int mp3dec_load_w(mp3dec_t *dec, const wchar_t *file_name, mp3dec_file_info_t *info, MP3D_PROGRESS_CB progress_cb, void *user_data)+{+ int ret;+ mp3dec_map_info_t map_info;+ if ((ret = mp3dec_open_file_w(file_name, &map_info)))+ return ret;+ return mp3dec_load_mapinfo(dec, &map_info, info, progress_cb, user_data);+}++int mp3dec_iterate_w(const wchar_t *file_name, MP3D_ITERATE_CB callback, void *user_data)+{+ int ret;+ mp3dec_map_info_t map_info;+ if ((ret = mp3dec_open_file_w(file_name, &map_info)))+ return ret;+ return mp3dec_iterate_mapinfo(&map_info, callback, user_data);+}++int mp3dec_ex_open_w(mp3dec_ex_t *dec, const wchar_t *file_name, int flags)+{+ int ret;+ if ((ret = mp3dec_open_file_w(file_name, &dec->file)))+ return ret;+ return mp3dec_ex_open_mapinfo(dec, flags);+}+#endif+#else /* MINIMP3_NO_STDIO */+void mp3dec_ex_close(mp3dec_ex_t *dec)+{+#ifdef MINIMP3_HAVE_RING+ if (dec->io)+ mp3dec_close_ring(&dec->file);+#else+ if (dec->io && dec->file.buffer)+ free((void*)dec->file.buffer);+#endif+ if (dec->index.frames)+ free(dec->index.frames);+ memset(dec, 0, sizeof(*dec));+}+#endif++#endif /* MINIMP3_IMPLEMENTATION && !_MINIMP3_EX_IMPLEMENTATION_GUARD */
cbits/proAudio.cpp view
@@ -143,9 +143,28 @@ return retStr; } +#include "minimp3_ex.h"++static AudioSample* loadMp3(const std::string & fname) {+ mp3dec_t mp3d;+ mp3dec_file_info_t info;+ memset(&info, 0, sizeof(info));++ if (mp3dec_load(&mp3d, const_cast<char*>(fname.c_str()), &info, 0, 0)) return 0;++ // convert to AudioSample:+ unsigned int size = info.samples*sizeof(short); // channels included, byte size = samples*sizeof(mp3d_sample_t)+ unsigned char * data = new unsigned char[size];+ if(!data) return 0;+ memcpy(data, info.buffer, size);+ free(info.buffer);+ return new AudioSample(data, size, info.channels, info.hz, 16);+}+ DeviceAudio::DeviceAudio() : m_freqOut(0), m_volL(1.0f), m_volR(1.0f) { loaderRegister(AudioSample::loadWav,"wav"); loaderRegister(loadOgg,"ogg");+ loaderRegister(loadMp3,"mp3"); } uint64_t DeviceAudio::sampleFromFile(const std::string & filename, float volume) {
cbits/proAudio.h view
@@ -179,7 +179,7 @@ \param disparity (optional) time difference between left and right channel in seconds. Use negative values to specify a delay for the left channel, positive for the right. \param pitch (optional) pitch factor for playback. 0.5 corresponds to one octave below, 2.0 to one above the original sample. \return true in case the parameters have been updated successfully */- virtual bool soundUpdate(uint64_t sound, float volumeL, float volumeR, float disparity=0.0f, float pitch=1.0f )=0;+ virtual bool soundUpdate(uint64_t sound, bool pause, float volumeL, float volumeR, float disparity=0.0f, float pitch=1.0f )=0; /// stops a specified sound immediately virtual bool soundStop(uint64_t sound)=0; /// stops all sounds immediately
cbits/proAudioRt.cpp view
@@ -31,6 +31,8 @@ bool isLoop; /// stores whether sample is currently playing bool isPlaying;+ /// stores whether sample is currently paused+ bool isPaused; /// unique id for this sound uint64_t uniqueId; };@@ -137,6 +139,7 @@ ma_sound[i].pitch=fabs(pitch); ma_sound[i].isLoop=false; ma_sound[i].isPlaying=true;+ ma_sound[i].isPaused=false; ma_sound[i].uniqueId=UH_UNPACK_UNIQUE_ID(uniqueHandle); return uniqueHandle; }@@ -153,9 +156,10 @@ return uniqueHandle; } -bool DeviceAudioRt::soundUpdate(uint64_t uniqueHandle, float volumeL, float volumeR, float disparity, float pitch ) {+bool DeviceAudioRt::soundUpdate(uint64_t uniqueHandle, bool pause, float volumeL, float volumeR, float disparity, float pitch ) { unsigned int sound = UH_UNPACK_PAYLOAD(uniqueHandle); if((sound>=m_nSound) || !ma_sound[sound].isPlaying || ma_sound[sound].uniqueId!=UH_UNPACK_UNIQUE_ID(uniqueHandle)) return false;+ ma_sound[sound].isPaused=pause; ma_sound[sound].volL=volumeL; ma_sound[sound].volR=volumeR; ma_sound[sound].disparity=disparity;@@ -195,7 +199,7 @@ for(unsigned int j=0; j<nFrames; ++j) { float left=0.0f; float right=0.0f;- for (unsigned int i=0; i<m_nSound; ++i ) if(ma_sound[i].isPlaying) {+ for (unsigned int i=0; i<m_nSound; ++i ) if(ma_sound[i].isPlaying && !ma_sound[i].isPaused) { unsigned int nChannels = ma_sound[i].sample->channels(); if((ma_sound[i].pitch==1.0f)&&!ma_sound[i].disparity) { // use optimized default mixing: unsigned int currPos=ma_sound[i].dpos+j;@@ -257,6 +261,8 @@ } // calculate new pos: for (unsigned int i=0; i<m_nSound; ++i ) {+ if (ma_sound[i].isPaused) continue;+ if(ma_sound[i].pitch==1.0f) ma_sound[i].dpos += nFrames; else ma_sound[i].dpos += (unsigned int)(nFrames*ma_sound[i].pitch);
cbits/proAudioRt.h view
@@ -73,7 +73,7 @@ \param disparity (optional) time difference between left and right channel in seconds. Use negative values to specify a delay for the left channel, positive for the right. \param pitch (optional) pitch factor for playback. 0.5 corresponds to one octave below, 2.0 to one above the original sample. \return true in case the parameters have been updated successfully */- virtual bool soundUpdate(uint64_t sound, float volumeL, float volumeR, float disparity=0.0f, float pitch=1.0f );+ virtual bool soundUpdate(uint64_t sound, bool pause, float volumeL, float volumeR, float disparity=0.0f, float pitch=1.0f ); /// stops a specified sound immediately virtual bool soundStop(uint64_t sound); /// stops all sounds immediately
cbits/proteaaudio_binding.cpp view
@@ -51,6 +51,25 @@ return pSample; } +#define MINIMP3_IMPLEMENTATION+#include "minimp3_ex.h"++static AudioSample* loadMp3FromMemory(unsigned char * file_data_ptr, size_t file_data_len) {+ mp3dec_t mp3d;+ mp3dec_file_info_t info;+ memset(&info, 0, sizeof(info));++ if (mp3dec_load_buf(&mp3d, file_data_ptr, file_data_len, &info, 0, 0)) return 0;++ // convert to AudioSample:+ unsigned int size = info.samples*sizeof(short); // channels included, byte size = samples*sizeof(mp3d_sample_t)+ unsigned char * data = new unsigned char[size];+ if(!data) return 0;+ memcpy(data, info.buffer, size);+ free(info.buffer);+ return new AudioSample(data, size, info.channels, info.hz, 16);+}+ extern "C" { extern int stb_vorbis_decode_memory(unsigned char *mem, int len, int *channels, int* sample_rate, short **output); };@@ -138,6 +157,16 @@ return ret; } +sample_t _sampleFromMemoryMp3(char *data, int size, float volume) {+ DeviceAudio & audio = DeviceAudio::singleton();+ if((&audio) == 0) return 0;+ AudioSample* pSample = loadMp3FromMemory((unsigned char*)data, size);+ if(!pSample) return 0;+ sample_t ret = audio.sampleFromMemory(*pSample, volume);+ delete pSample;+ return ret;+}+ int soundActiveAll() { DeviceAudio & audio = DeviceAudio::singleton(); if((&audio) == 0) return 0;@@ -181,10 +210,10 @@ return audio.soundPlayOn(track, sample, volumeL, volumeR, disparity, pitch); } -int soundUpdate(sound_t sound, float volumeL, float volumeR, float disparity, float pitch) {+int soundUpdate(sound_t sound, int pause, float volumeL, float volumeR, float disparity, float pitch) { DeviceAudio & audio = DeviceAudio::singleton(); if((&audio) == 0) return 0;- return audio.soundUpdate(sound, volumeL, volumeR, disparity, pitch);+ return audio.soundUpdate(sound, pause, volumeL, volumeR, disparity, pitch); } int soundStop(sound_t sound) {
cbits/proteaaudio_binding.h view
@@ -14,6 +14,7 @@ sample_t _sampleFromMemoryPcm(char *data, int size, int channels, int sampleRate, int bitsPerSample, float volume); sample_t _sampleFromMemoryWav(char *data, int size, float volume); sample_t _sampleFromMemoryOgg(char *data, int size, float volume);+sample_t _sampleFromMemoryMp3(char *data, int size, float volume); sample_t sampleFromFile(char* filename, float volume); int sampleDestroy(uint64_t sample); int soundActiveAll();@@ -22,7 +23,7 @@ sound_t soundPlay(sample_t sample, float volumeL, float volumeR, float disparity, float pitch); sound_t soundPlayOn(unsigned int track, sample_t sample, float volumeL, float volumeR, float disparity, float pitch); sound_t soundLoopOn(unsigned int track, sample_t sample, float volumeL, float volumeR, float disparity, float pitch);-int soundUpdate(sound_t sound, float volumeL, float volumeR, float disparity, float pitch);+int soundUpdate(sound_t sound, int pause, float volumeL, float volumeR, float disparity, float pitch); int soundStop(sound_t sound); int soundActive(sound_t sound); #ifdef __cplusplus
example/play.hs view
@@ -36,6 +36,12 @@ threadDelay $ 3 * oneSec soundStop sndTrkB soundActive sndTrkB >>= print++ soundUpdate sndTrkA True 1 1 0 1+ putStrLn "pause sound, press enter to continue"+ getLine+ soundUpdate sndTrkA False 1 1 0 1+ -- wait sndTrkA to finish waitPlayback @@ -44,6 +50,7 @@ sampleB <- case takeExtension filename of ".ogg" -> sampleFromMemoryOgg buffer 1.0 ".wav" -> sampleFromMemoryWav buffer 1.0+ ".mp3" -> sampleFromMemoryMp3 buffer 1.0 soundPlay sampleB 1 1 0 1 -- left volume, right volume, time difference between left and right, pitch factor for playback waitPlayback
proteaaudio.cabal view
@@ -1,8 +1,8 @@ Cabal-Version: 2.2 Name: proteaaudio-Version: 0.9.4+Version: 0.10.0 Synopsis: Simple audio library for Windows, Linux, OSX.-Description: Simple audio library for Windows, Linux, OSX. Supports PCM, Ogg and Wav playback and multichannel mixing.+Description: Simple audio library for Windows, Linux, OSX. Supports PCM, Ogg, Mp3 and Wav playback and multichannel mixing. License: BSD-3-Clause License-file: LICENSE Author: Csaba Hruska@@ -36,6 +36,8 @@ cbits/proteaaudio_binding.cpp cbits/proteaaudio_binding.h cbits/stb_vorbis.c+ cbits/minimp3_ex.h+ cbits/minimp3.h Sound/ProteaAudio.chs