X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmpegaudiodec.c;h=c819bc546fa32ad6c5b92f59b882b0ae638068e4;hb=0eea212943544d40f99b05571aa7159d78667154;hp=fab487edc7e0ad5680f56813ece0b2a0cff8b074;hpb=406792e7b0f15627411728829c7a2de86fcbe96b;p=ffmpeg diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c index fab487edc7e..c819bc546fa 100644 --- a/libavcodec/mpegaudiodec.c +++ b/libavcodec/mpegaudiodec.c @@ -2,52 +2,44 @@ * MPEG Audio decoder * Copyright (c) 2001, 2002 Fabrice Bellard * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * FFmpeg is distributed in the hope that it will be useful, + * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** - * @file mpegaudiodec.c - * MPEG Audio decoder. + * @file + * MPEG Audio decoder */ +#include "libavutil/audioconvert.h" #include "avcodec.h" -#include "bitstream.h" -#include "dsputil.h" +#include "get_bits.h" +#include "mathops.h" +#include "mpegaudiodsp.h" /* * TODO: - * - in low precision mode, use more 16 bit multiplies in synth filter * - test lsf / mpeg25 extensively. */ #include "mpegaudio.h" #include "mpegaudiodecheader.h" -#include "mathops.h" - -/* WARNING: only correct for posititive numbers */ -#define FIXR(a) ((int)((a) * FRAC_ONE + 0.5)) -#define FRAC_RND(a) (((a) + (FRAC_ONE/2)) >> FRAC_BITS) - -#define FIXHR(a) ((int)((a) * (1LL<<32) + 0.5)) - -/****************/ - -#define HEADER_SIZE 4 +#define BACKSTEP_SIZE 512 +#define EXTRABYTES 24 /* layer 3 "granule" */ typedef struct GranuleDef { @@ -66,44 +58,87 @@ typedef struct GranuleDef { int preflag; int short_start, long_end; /* long/short band indexes */ uint8_t scale_factors[40]; - int32_t sb_hybrid[SBLIMIT * 18]; /* 576 samples */ + INTFLOAT sb_hybrid[SBLIMIT * 18]; /* 576 samples */ } GranuleDef; +typedef struct MPADecodeContext { + MPA_DECODE_HEADER + uint8_t last_buf[2 * BACKSTEP_SIZE + EXTRABYTES]; + int last_buf_size; + /* next header (used in free format parsing) */ + uint32_t free_format_next_header; + GetBitContext gb; + GetBitContext in_gb; + DECLARE_ALIGNED(32, MPA_INT, synth_buf)[MPA_MAX_CHANNELS][512 * 2]; + int synth_buf_offset[MPA_MAX_CHANNELS]; + DECLARE_ALIGNED(32, INTFLOAT, sb_samples)[MPA_MAX_CHANNELS][36][SBLIMIT]; + INTFLOAT mdct_buf[MPA_MAX_CHANNELS][SBLIMIT * 18]; /* previous samples, for layer 3 MDCT */ + GranuleDef granules[2][2]; /* Used in Layer 3 */ + int adu_mode; ///< 0 for standard mp3, 1 for adu formatted mp3 + int dither_state; + int err_recognition; + AVCodecContext* avctx; + MPADSPContext mpadsp; + AVFrame frame; +} MPADecodeContext; + +#if CONFIG_FLOAT +# define SHR(a,b) ((a)*(1.0f/(1<<(b)))) +# define FIXR_OLD(a) ((int)((a) * FRAC_ONE + 0.5)) +# define FIXR(x) ((float)(x)) +# define FIXHR(x) ((float)(x)) +# define MULH3(x, y, s) ((s)*(y)*(x)) +# define MULLx(x, y, s) ((y)*(x)) +# define RENAME(a) a ## _float +# define OUT_FMT AV_SAMPLE_FMT_FLT +#else +# define SHR(a,b) ((a)>>(b)) +/* WARNING: only correct for positive numbers */ +# define FIXR_OLD(a) ((int)((a) * FRAC_ONE + 0.5)) +# define FIXR(a) ((int)((a) * FRAC_ONE + 0.5)) +# define FIXHR(a) ((int)((a) * (1LL<<32) + 0.5)) +# define MULH3(x, y, s) MULH((s)*(x), y) +# define MULLx(x, y, s) MULL(x,y,s) +# define RENAME(a) a ## _fixed +# define OUT_FMT AV_SAMPLE_FMT_S16 +#endif + +/****************/ + +#define HEADER_SIZE 4 + #include "mpegaudiodata.h" #include "mpegaudiodectab.h" -static void compute_antialias_integer(MPADecodeContext *s, GranuleDef *g); -static void compute_antialias_float(MPADecodeContext *s, GranuleDef *g); - /* vlc structure for decoding layer 3 huffman tables */ static VLC huff_vlc[16]; static VLC_TYPE huff_vlc_tables[ - 0+128+128+128+130+128+154+166+ - 142+204+190+170+542+460+662+414 + 0 + 128 + 128 + 128 + 130 + 128 + 154 + 166 + + 142 + 204 + 190 + 170 + 542 + 460 + 662 + 414 ][2]; static const int huff_vlc_tables_sizes[16] = { - 0, 128, 128, 128, 130, 128, 154, 166, - 142, 204, 190, 170, 542, 460, 662, 414 + 0, 128, 128, 128, 130, 128, 154, 166, + 142, 204, 190, 170, 542, 460, 662, 414 }; static VLC huff_quad_vlc[2]; -static VLC_TYPE huff_quad_vlc_tables[128+16][2]; -static const int huff_quad_vlc_tables_sizes[2] = { - 128, 16 -}; +static VLC_TYPE huff_quad_vlc_tables[128+16][2]; +static const int huff_quad_vlc_tables_sizes[2] = { 128, 16 }; /* computed from band_size_long */ static uint16_t band_index_long[9][23]; -/* XXX: free when all decoders are closed */ -#define TABLE_4_3_SIZE (8191 + 16)*4 -static int8_t table_4_3_exp[TABLE_4_3_SIZE]; -static uint32_t table_4_3_value[TABLE_4_3_SIZE]; -static uint32_t exp_table[512]; -static uint32_t expval_table[512][16]; +#include "mpegaudio_tablegen.h" /* intensity stereo coef table */ -static int32_t is_table[2][16]; -static int32_t is_table_lsf[2][2][16]; -static int32_t csa_table[8][4]; -static float csa_table_float[8][4]; -static int32_t mdct_win[8][36]; +static INTFLOAT is_table[2][16]; +static INTFLOAT is_table_lsf[2][2][16]; +static INTFLOAT csa_table[8][4]; +static INTFLOAT mdct_win[8][36]; + +static int16_t division_tab3[1<<6 ]; +static int16_t division_tab5[1<<8 ]; +static int16_t division_tab9[1<<11]; + +static int16_t * const division_tabs[4] = { + division_tab3, division_tab5, NULL, division_tab9 +}; /* lower 2 bits: modulo 3, higher bits: shift */ static uint16_t scale_factor_modshift[64]; @@ -112,7 +147,7 @@ static int32_t scale_factor_mult[15][3]; /* mult table for layer 2 group quantization */ #define SCALE_GEN(v) \ -{ FIXR(1.0 * (v)), FIXR(0.7937005259 * (v)), FIXR(0.6299605249 * (v)) } +{ FIXR_OLD(1.0 * (v)), FIXR_OLD(0.7937005259 * (v)), FIXR_OLD(0.6299605249 * (v)) } static const int32_t scale_factor_mult2[3][3] = { SCALE_GEN(4.0 / 3.0), /* 3 steps */ @@ -120,23 +155,23 @@ static const int32_t scale_factor_mult2[3][3] = { SCALE_GEN(4.0 / 9.0), /* 9 steps */ }; -static DECLARE_ALIGNED_16(MPA_INT, window[512]); - /** * Convert region offsets to region sizes and truncate * size to big_values. */ -void ff_region_offset2size(GranuleDef *g){ - int i, k, j=0; - g->region_size[2] = (576 / 2); - for(i=0;i<3;i++) { +static void ff_region_offset2size(GranuleDef *g) +{ + int i, k, j = 0; + g->region_size[2] = 576 / 2; + for (i = 0; i < 3; i++) { k = FFMIN(g->region_size[i], g->big_values); g->region_size[i] = k - j; j = k; } } -void ff_init_short_region(MPADecodeContext *s, GranuleDef *g){ +static void ff_init_short_region(MPADecodeContext *s, GranuleDef *g) +{ if (g->block_type == 2) g->region_size[0] = (36 / 2); else { @@ -150,17 +185,17 @@ void ff_init_short_region(MPADecodeContext *s, GranuleDef *g){ g->region_size[1] = (576 / 2); } -void ff_init_long_region(MPADecodeContext *s, GranuleDef *g, int ra1, int ra2){ +static void ff_init_long_region(MPADecodeContext *s, GranuleDef *g, int ra1, int ra2) +{ int l; - g->region_size[0] = - band_index_long[s->sample_rate_index][ra1 + 1] >> 1; + g->region_size[0] = band_index_long[s->sample_rate_index][ra1 + 1] >> 1; /* should not overflow */ l = FFMIN(ra1 + ra2 + 2, 22); - g->region_size[1] = - band_index_long[s->sample_rate_index][l] >> 1; + g->region_size[1] = band_index_long[s->sample_rate_index][ l] >> 1; } -void ff_compute_band_indexes(MPADecodeContext *s, GranuleDef *g){ +static void ff_compute_band_indexes(MPADecodeContext *s, GranuleDef *g) +{ if (g->block_type == 2) { if (g->switch_point) { /* if switched mode, we handle the 36 first samples as @@ -175,12 +210,12 @@ void ff_compute_band_indexes(MPADecodeContext *s, GranuleDef *g){ g->short_start = 2 + (s->sample_rate_index != 8); } else { - g->long_end = 0; + g->long_end = 0; g->short_start = 0; } } else { g->short_start = 13; - g->long_end = 22; + g->long_end = 22; } } @@ -191,11 +226,11 @@ static inline int l1_unscale(int n, int mant, int scale_factor) int shift, mod; int64_t val; - shift = scale_factor_modshift[scale_factor]; - mod = shift & 3; + shift = scale_factor_modshift[scale_factor]; + mod = shift & 3; shift >>= 2; - val = MUL64(mant + (-1 << n) + 1, scale_factor_mult[n-1][mod]); - shift += n; + val = MUL64(mant + (-1 << n) + 1, scale_factor_mult[n-1][mod]); + shift += n; /* NOTE: at this point, 1 <= shift >= 21 + 15 */ return (int)((val + (1LL << (shift - 1))) >> shift); } @@ -204,8 +239,8 @@ static inline int l2_unscale_group(int steps, int mant, int scale_factor) { int shift, mod, val; - shift = scale_factor_modshift[scale_factor]; - mod = shift & 3; + shift = scale_factor_modshift[scale_factor]; + mod = shift & 3; shift >>= 2; val = (mant - (steps >> 1)) * scale_factor_mult2[steps >> 2][mod]; @@ -221,713 +256,236 @@ static inline int l3_unscale(int value, int exponent) unsigned int m; int e; - e = table_4_3_exp [4*value + (exponent&3)]; - m = table_4_3_value[4*value + (exponent&3)]; - e -= (exponent >> 2); - assert(e>=1); + e = table_4_3_exp [4 * value + (exponent & 3)]; + m = table_4_3_value[4 * value + (exponent & 3)]; + e -= exponent >> 2; + assert(e >= 1); if (e > 31) return 0; - m = (m + (1 << (e-1))) >> e; + m = (m + (1 << (e - 1))) >> e; return m; } -/* all integer n^(4/3) computation code */ -#define DEV_ORDER 13 - -#define POW_FRAC_BITS 24 -#define POW_FRAC_ONE (1 << POW_FRAC_BITS) -#define POW_FIX(a) ((int)((a) * POW_FRAC_ONE)) -#define POW_MULL(a,b) (((int64_t)(a) * (int64_t)(b)) >> POW_FRAC_BITS) - -static int dev_4_3_coefs[DEV_ORDER]; - -#if 0 /* unused */ -static int pow_mult3[3] = { - POW_FIX(1.0), - POW_FIX(1.25992104989487316476), - POW_FIX(1.58740105196819947474), -}; -#endif - -static void int_pow_init(void) +static av_cold void decode_init_static(void) { - int i, a; - - a = POW_FIX(1.0); - for(i=0;i= 0; j--) - a1 = POW_MULL(a, dev_4_3_coefs[j] + a1); - a = (1 << POW_FRAC_BITS) + a1; - /* exponent compute (exact) */ - e = e * 4; - er = e % 3; - eq = e / 3; - a = POW_MULL(a, pow_mult3[er]); - while (a >= 2 * POW_FRAC_ONE) { - a = a >> 1; - eq++; + /* scale factor multiply for layer 1 */ + for (i = 0; i < 15; i++) { + int n, norm; + n = i + 2; + norm = ((INT64_C(1) << n) * FRAC_ONE) / ((1 << n) - 1); + scale_factor_mult[i][0] = MULLx(norm, FIXR(1.0 * 2.0), FRAC_BITS); + scale_factor_mult[i][1] = MULLx(norm, FIXR(0.7937005259 * 2.0), FRAC_BITS); + scale_factor_mult[i][2] = MULLx(norm, FIXR(0.6299605249 * 2.0), FRAC_BITS); + av_dlog(NULL, "%d: norm=%x s=%x %x %x\n", i, norm, + scale_factor_mult[i][0], + scale_factor_mult[i][1], + scale_factor_mult[i][2]); } - /* convert to float */ - while (a < POW_FRAC_ONE) { - a = a << 1; - eq--; - } - /* now POW_FRAC_ONE <= a < 2 * POW_FRAC_ONE */ -#if POW_FRAC_BITS > FRAC_BITS - a = (a + (1 << (POW_FRAC_BITS - FRAC_BITS - 1))) >> (POW_FRAC_BITS - FRAC_BITS); - /* correct overflow */ - if (a >= 2 * (1 << FRAC_BITS)) { - a = a >> 1; - eq++; - } -#endif - *exp_ptr = eq; - return a; -} -#endif -static int decode_init(AVCodecContext * avctx) -{ - MPADecodeContext *s = avctx->priv_data; - static int init=0; - int i, j, k; + RENAME(ff_mpa_synth_init)(RENAME(ff_mpa_synth_window)); - s->avctx = avctx; + /* huffman decode tables */ + offset = 0; + for (i = 1; i < 16; i++) { + const HuffTable *h = &mpa_huff_tables[i]; + int xsize, x, y; + uint8_t tmp_bits [512]; + uint16_t tmp_codes[512]; - avctx->sample_fmt= OUT_FMT; - s->error_recognition= avctx->error_recognition; + memset(tmp_bits , 0, sizeof(tmp_bits )); + memset(tmp_codes, 0, sizeof(tmp_codes)); - if(avctx->antialias_algo != FF_AA_FLOAT) - s->compute_antialias= compute_antialias_integer; - else - s->compute_antialias= compute_antialias_float; - - if (!init && !avctx->parse_only) { - int offset; - - /* scale factors table for layer 1/2 */ - for(i=0;i<64;i++) { - int shift, mod; - /* 1.0 (i = 3) is normalized to 2 ^ FRAC_BITS */ - shift = (i / 3); - mod = i % 3; - scale_factor_modshift[i] = mod | (shift << 2); - } + xsize = h->xsize; - /* scale factor multiply for layer 1 */ - for(i=0;i<15;i++) { - int n, norm; - n = i + 2; - norm = ((INT64_C(1) << n) * FRAC_ONE) / ((1 << n) - 1); - scale_factor_mult[i][0] = MULL(FIXR(1.0 * 2.0), norm, FRAC_BITS); - scale_factor_mult[i][1] = MULL(FIXR(0.7937005259 * 2.0), norm, FRAC_BITS); - scale_factor_mult[i][2] = MULL(FIXR(0.6299605249 * 2.0), norm, FRAC_BITS); - dprintf(avctx, "%d: norm=%x s=%x %x %x\n", - i, norm, - scale_factor_mult[i][0], - scale_factor_mult[i][1], - scale_factor_mult[i][2]); + j = 0; + for (x = 0; x < xsize; x++) { + for (y = 0; y < xsize; y++) { + tmp_bits [(x << 5) | y | ((x&&y)<<4)]= h->bits [j ]; + tmp_codes[(x << 5) | y | ((x&&y)<<4)]= h->codes[j++]; + } } - ff_mpa_synth_init(window); - - /* huffman decode tables */ - offset = 0; - for(i=1;i<16;i++) { - const HuffTable *h = &mpa_huff_tables[i]; - int xsize, x, y; - unsigned int n; - uint8_t tmp_bits [512]; - uint16_t tmp_codes[512]; - - memset(tmp_bits , 0, sizeof(tmp_bits )); - memset(tmp_codes, 0, sizeof(tmp_codes)); - - xsize = h->xsize; - n = xsize * xsize; - - j = 0; - for(x=0;xbits [j ]; - tmp_codes[(x << 5) | y | ((x&&y)<<4)]= h->codes[j++]; - } - } + /* XXX: fail test */ + huff_vlc[i].table = huff_vlc_tables+offset; + huff_vlc[i].table_allocated = huff_vlc_tables_sizes[i]; + init_vlc(&huff_vlc[i], 7, 512, + tmp_bits, 1, 1, tmp_codes, 2, 2, + INIT_VLC_USE_NEW_STATIC); + offset += huff_vlc_tables_sizes[i]; + } + assert(offset == FF_ARRAY_ELEMS(huff_vlc_tables)); + + offset = 0; + for (i = 0; i < 2; i++) { + huff_quad_vlc[i].table = huff_quad_vlc_tables+offset; + huff_quad_vlc[i].table_allocated = huff_quad_vlc_tables_sizes[i]; + init_vlc(&huff_quad_vlc[i], i == 0 ? 7 : 4, 16, + mpa_quad_bits[i], 1, 1, mpa_quad_codes[i], 1, 1, + INIT_VLC_USE_NEW_STATIC); + offset += huff_quad_vlc_tables_sizes[i]; + } + assert(offset == FF_ARRAY_ELEMS(huff_quad_vlc_tables)); - /* XXX: fail test */ - huff_vlc[i].table = huff_vlc_tables+offset; - huff_vlc[i].table_allocated = huff_vlc_tables_sizes[i]; - init_vlc(&huff_vlc[i], 7, 512, - tmp_bits, 1, 1, tmp_codes, 2, 2, - INIT_VLC_USE_NEW_STATIC); - offset += huff_vlc_tables_sizes[i]; + for (i = 0; i < 9; i++) { + k = 0; + for (j = 0; j < 22; j++) { + band_index_long[i][j] = k; + k += band_size_long[i][j]; } - assert(offset == FF_ARRAY_ELEMS(huff_vlc_tables)); - - offset = 0; - for(i=0;i<2;i++) { - huff_quad_vlc[i].table = huff_quad_vlc_tables+offset; - huff_quad_vlc[i].table_allocated = huff_quad_vlc_tables_sizes[i]; - init_vlc(&huff_quad_vlc[i], i == 0 ? 7 : 4, 16, - mpa_quad_bits[i], 1, 1, mpa_quad_codes[i], 1, 1, - INIT_VLC_USE_NEW_STATIC); - offset += huff_quad_vlc_tables_sizes[i]; - } - assert(offset == FF_ARRAY_ELEMS(huff_quad_vlc_tables)); + band_index_long[i][22] = k; + } - for(i=0;i<9;i++) { - k = 0; - for(j=0;j<22;j++) { - band_index_long[i][j] = k; - k += band_size_long[i][j]; + /* compute n ^ (4/3) and store it in mantissa/exp format */ + + mpegaudio_tableinit(); + + for (i = 0; i < 4; i++) { + if (ff_mpa_quant_bits[i] < 0) { + for (j = 0; j < (1 << (-ff_mpa_quant_bits[i]+1)); j++) { + int val1, val2, val3, steps; + int val = j; + steps = ff_mpa_quant_steps[i]; + val1 = val % steps; + val /= steps; + val2 = val % steps; + val3 = val / steps; + division_tabs[i][j] = val1 + (val2 << 4) + (val3 << 8); } - band_index_long[i][22] = k; } + } - /* compute n ^ (4/3) and store it in mantissa/exp format */ - - int_pow_init(); - for(i=1;i>4); - double f= pow(i&15, 4.0 / 3.0) * pow(2, (exponent-400)*0.25 + FRAC_BITS + 5); - expval_table[exponent][i&15]= llrint(f); - if((i&15)==1) - exp_table[exponent]= llrint(f); + is_table[0][ i] = v; + is_table[1][6 - i] = v; + } + /* invalid values */ + for (i = 7; i < 16; i++) + is_table[0][i] = is_table[1][i] = 0.0; + + for (i = 0; i < 16; i++) { + double f; + int e, k; + + for (j = 0; j < 2; j++) { + e = -(j + 1) * ((i + 1) >> 1); + f = pow(2.0, e / 4.0); + k = i & 1; + is_table_lsf[j][k ^ 1][i] = FIXR(f); + is_table_lsf[j][k ][i] = FIXR(1.0); + av_dlog(NULL, "is_table_lsf %d %d: %f %f\n", + i, j, (float) is_table_lsf[j][0][i], + (float) is_table_lsf[j][1][i]); } + } - for(i=0;i<7;i++) { - float f; - int v; - if (i != 6) { - f = tan((double)i * M_PI / 12.0); - v = FIXR(f / (1.0 + f)); - } else { - v = FIXR(1.0); - } - is_table[0][i] = v; - is_table[1][6 - i] = v; - } - /* invalid values */ - for(i=7;i<16;i++) - is_table[0][i] = is_table[1][i] = 0.0; - - for(i=0;i<16;i++) { - double f; - int e, k; - - for(j=0;j<2;j++) { - e = -(j + 1) * ((i + 1) >> 1); - f = pow(2.0, e / 4.0); - k = i & 1; - is_table_lsf[j][k ^ 1][i] = FIXR(f); - is_table_lsf[j][k][i] = FIXR(1.0); - dprintf(avctx, "is_table_lsf %d %d: %x %x\n", - i, j, is_table_lsf[j][0][i], is_table_lsf[j][1][i]); - } - } + for (i = 0; i < 8; i++) { + float ci, cs, ca; + ci = ci_table[i]; + cs = 1.0 / sqrt(1.0 + ci * ci); + ca = cs * ci; +#if !CONFIG_FLOAT + csa_table[i][0] = FIXHR(cs/4); + csa_table[i][1] = FIXHR(ca/4); + csa_table[i][2] = FIXHR(ca/4) + FIXHR(cs/4); + csa_table[i][3] = FIXHR(ca/4) - FIXHR(cs/4); +#else + csa_table[i][0] = cs; + csa_table[i][1] = ca; + csa_table[i][2] = ca + cs; + csa_table[i][3] = ca - cs; +#endif + } - for(i=0;i<8;i++) { - float ci, cs, ca; - ci = ci_table[i]; - cs = 1.0 / sqrt(1.0 + ci * ci); - ca = cs * ci; - csa_table[i][0] = FIXHR(cs/4); - csa_table[i][1] = FIXHR(ca/4); - csa_table[i][2] = FIXHR(ca/4) + FIXHR(cs/4); - csa_table[i][3] = FIXHR(ca/4) - FIXHR(cs/4); - csa_table_float[i][0] = cs; - csa_table_float[i][1] = ca; - csa_table_float[i][2] = ca + cs; - csa_table_float[i][3] = ca - cs; - } + /* compute mdct windows */ + for (i = 0; i < 36; i++) { + for (j = 0; j < 4; j++) { + double d; - /* compute mdct windows */ - for(i=0;i<36;i++) { - for(j=0; j<4; j++){ - double d; - - if(j==2 && i%3 != 1) - continue; - - d= sin(M_PI * (i + 0.5) / 36.0); - if(j==1){ - if (i>=30) d= 0; - else if(i>=24) d= sin(M_PI * (i - 18 + 0.5) / 12.0); - else if(i>=18) d= 1; - }else if(j==3){ - if (i< 6) d= 0; - else if(i< 12) d= sin(M_PI * (i - 6 + 0.5) / 12.0); - else if(i< 18) d= 1; - } - //merge last stage of imdct into the window coefficients - d*= 0.5 / cos(M_PI*(2*i + 19)/72); + if (j == 2 && i % 3 != 1) + continue; - if(j==2) - mdct_win[j][i/3] = FIXHR((d / (1<<5))); - else - mdct_win[j][i ] = FIXHR((d / (1<<5))); + d = sin(M_PI * (i + 0.5) / 36.0); + if (j == 1) { + if (i >= 30) d = 0; + else if (i >= 24) d = sin(M_PI * (i - 18 + 0.5) / 12.0); + else if (i >= 18) d = 1; + } else if (j == 3) { + if (i < 6) d = 0; + else if (i < 12) d = sin(M_PI * (i - 6 + 0.5) / 12.0); + else if (i < 18) d = 1; } - } + //merge last stage of imdct into the window coefficients + d *= 0.5 / cos(M_PI * (2 * i + 19) / 72); - /* NOTE: we do frequency inversion adter the MDCT by changing - the sign of the right window coefs */ - for(j=0;j<4;j++) { - for(i=0;i<36;i+=2) { - mdct_win[j + 4][i] = mdct_win[j][i]; - mdct_win[j + 4][i + 1] = -mdct_win[j][i + 1]; - } + if (j == 2) + mdct_win[j][i/3] = FIXHR((d / (1<<5))); + else + mdct_win[j][i ] = FIXHR((d / (1<<5))); } - - init = 1; } - if (avctx->codec_id == CODEC_ID_MP3ADU) - s->adu_mode = 1; - return 0; -} - -/* tab[i][j] = 1.0 / (2.0 * cos(pi*(2*k+1) / 2^(6 - j))) */ - -/* cos(i*pi/64) */ - -#define COS0_0 FIXHR(0.50060299823519630134/2) -#define COS0_1 FIXHR(0.50547095989754365998/2) -#define COS0_2 FIXHR(0.51544730992262454697/2) -#define COS0_3 FIXHR(0.53104259108978417447/2) -#define COS0_4 FIXHR(0.55310389603444452782/2) -#define COS0_5 FIXHR(0.58293496820613387367/2) -#define COS0_6 FIXHR(0.62250412303566481615/2) -#define COS0_7 FIXHR(0.67480834145500574602/2) -#define COS0_8 FIXHR(0.74453627100229844977/2) -#define COS0_9 FIXHR(0.83934964541552703873/2) -#define COS0_10 FIXHR(0.97256823786196069369/2) -#define COS0_11 FIXHR(1.16943993343288495515/4) -#define COS0_12 FIXHR(1.48416461631416627724/4) -#define COS0_13 FIXHR(2.05778100995341155085/8) -#define COS0_14 FIXHR(3.40760841846871878570/8) -#define COS0_15 FIXHR(10.19000812354805681150/32) - -#define COS1_0 FIXHR(0.50241928618815570551/2) -#define COS1_1 FIXHR(0.52249861493968888062/2) -#define COS1_2 FIXHR(0.56694403481635770368/2) -#define COS1_3 FIXHR(0.64682178335999012954/2) -#define COS1_4 FIXHR(0.78815462345125022473/2) -#define COS1_5 FIXHR(1.06067768599034747134/4) -#define COS1_6 FIXHR(1.72244709823833392782/4) -#define COS1_7 FIXHR(5.10114861868916385802/16) - -#define COS2_0 FIXHR(0.50979557910415916894/2) -#define COS2_1 FIXHR(0.60134488693504528054/2) -#define COS2_2 FIXHR(0.89997622313641570463/2) -#define COS2_3 FIXHR(2.56291544774150617881/8) - -#define COS3_0 FIXHR(0.54119610014619698439/2) -#define COS3_1 FIXHR(1.30656296487637652785/4) - -#define COS4_0 FIXHR(0.70710678118654752439/2) - -/* butterfly operator */ -#define BF(a, b, c, s)\ -{\ - tmp0 = tab[a] + tab[b];\ - tmp1 = tab[a] - tab[b];\ - tab[a] = tmp0;\ - tab[b] = MULH(tmp1<<(s), c);\ -} - -#define BF1(a, b, c, d)\ -{\ - BF(a, b, COS4_0, 1);\ - BF(c, d,-COS4_0, 1);\ - tab[c] += tab[d];\ -} - -#define BF2(a, b, c, d)\ -{\ - BF(a, b, COS4_0, 1);\ - BF(c, d,-COS4_0, 1);\ - tab[c] += tab[d];\ - tab[a] += tab[c];\ - tab[c] += tab[b];\ - tab[b] += tab[d];\ -} - -#define ADD(a, b) tab[a] += tab[b] - -/* DCT32 without 1/sqrt(2) coef zero scaling. */ -static void dct32(int32_t *out, int32_t *tab) -{ - int tmp0, tmp1; - - /* pass 1 */ - BF( 0, 31, COS0_0 , 1); - BF(15, 16, COS0_15, 5); - /* pass 2 */ - BF( 0, 15, COS1_0 , 1); - BF(16, 31,-COS1_0 , 1); - /* pass 1 */ - BF( 7, 24, COS0_7 , 1); - BF( 8, 23, COS0_8 , 1); - /* pass 2 */ - BF( 7, 8, COS1_7 , 4); - BF(23, 24,-COS1_7 , 4); - /* pass 3 */ - BF( 0, 7, COS2_0 , 1); - BF( 8, 15,-COS2_0 , 1); - BF(16, 23, COS2_0 , 1); - BF(24, 31,-COS2_0 , 1); - /* pass 1 */ - BF( 3, 28, COS0_3 , 1); - BF(12, 19, COS0_12, 2); - /* pass 2 */ - BF( 3, 12, COS1_3 , 1); - BF(19, 28,-COS1_3 , 1); - /* pass 1 */ - BF( 4, 27, COS0_4 , 1); - BF(11, 20, COS0_11, 2); - /* pass 2 */ - BF( 4, 11, COS1_4 , 1); - BF(20, 27,-COS1_4 , 1); - /* pass 3 */ - BF( 3, 4, COS2_3 , 3); - BF(11, 12,-COS2_3 , 3); - BF(19, 20, COS2_3 , 3); - BF(27, 28,-COS2_3 , 3); - /* pass 4 */ - BF( 0, 3, COS3_0 , 1); - BF( 4, 7,-COS3_0 , 1); - BF( 8, 11, COS3_0 , 1); - BF(12, 15,-COS3_0 , 1); - BF(16, 19, COS3_0 , 1); - BF(20, 23,-COS3_0 , 1); - BF(24, 27, COS3_0 , 1); - BF(28, 31,-COS3_0 , 1); - - - - /* pass 1 */ - BF( 1, 30, COS0_1 , 1); - BF(14, 17, COS0_14, 3); - /* pass 2 */ - BF( 1, 14, COS1_1 , 1); - BF(17, 30,-COS1_1 , 1); - /* pass 1 */ - BF( 6, 25, COS0_6 , 1); - BF( 9, 22, COS0_9 , 1); - /* pass 2 */ - BF( 6, 9, COS1_6 , 2); - BF(22, 25,-COS1_6 , 2); - /* pass 3 */ - BF( 1, 6, COS2_1 , 1); - BF( 9, 14,-COS2_1 , 1); - BF(17, 22, COS2_1 , 1); - BF(25, 30,-COS2_1 , 1); - - /* pass 1 */ - BF( 2, 29, COS0_2 , 1); - BF(13, 18, COS0_13, 3); - /* pass 2 */ - BF( 2, 13, COS1_2 , 1); - BF(18, 29,-COS1_2 , 1); - /* pass 1 */ - BF( 5, 26, COS0_5 , 1); - BF(10, 21, COS0_10, 1); - /* pass 2 */ - BF( 5, 10, COS1_5 , 2); - BF(21, 26,-COS1_5 , 2); - /* pass 3 */ - BF( 2, 5, COS2_2 , 1); - BF(10, 13,-COS2_2 , 1); - BF(18, 21, COS2_2 , 1); - BF(26, 29,-COS2_2 , 1); - /* pass 4 */ - BF( 1, 2, COS3_1 , 2); - BF( 5, 6,-COS3_1 , 2); - BF( 9, 10, COS3_1 , 2); - BF(13, 14,-COS3_1 , 2); - BF(17, 18, COS3_1 , 2); - BF(21, 22,-COS3_1 , 2); - BF(25, 26, COS3_1 , 2); - BF(29, 30,-COS3_1 , 2); - - /* pass 5 */ - BF1( 0, 1, 2, 3); - BF2( 4, 5, 6, 7); - BF1( 8, 9, 10, 11); - BF2(12, 13, 14, 15); - BF1(16, 17, 18, 19); - BF2(20, 21, 22, 23); - BF1(24, 25, 26, 27); - BF2(28, 29, 30, 31); - - /* pass 6 */ - - ADD( 8, 12); - ADD(12, 10); - ADD(10, 14); - ADD(14, 9); - ADD( 9, 13); - ADD(13, 11); - ADD(11, 15); - - out[ 0] = tab[0]; - out[16] = tab[1]; - out[ 8] = tab[2]; - out[24] = tab[3]; - out[ 4] = tab[4]; - out[20] = tab[5]; - out[12] = tab[6]; - out[28] = tab[7]; - out[ 2] = tab[8]; - out[18] = tab[9]; - out[10] = tab[10]; - out[26] = tab[11]; - out[ 6] = tab[12]; - out[22] = tab[13]; - out[14] = tab[14]; - out[30] = tab[15]; - - ADD(24, 28); - ADD(28, 26); - ADD(26, 30); - ADD(30, 25); - ADD(25, 29); - ADD(29, 27); - ADD(27, 31); - - out[ 1] = tab[16] + tab[24]; - out[17] = tab[17] + tab[25]; - out[ 9] = tab[18] + tab[26]; - out[25] = tab[19] + tab[27]; - out[ 5] = tab[20] + tab[28]; - out[21] = tab[21] + tab[29]; - out[13] = tab[22] + tab[30]; - out[29] = tab[23] + tab[31]; - out[ 3] = tab[24] + tab[20]; - out[19] = tab[25] + tab[21]; - out[11] = tab[26] + tab[22]; - out[27] = tab[27] + tab[23]; - out[ 7] = tab[28] + tab[18]; - out[23] = tab[29] + tab[19]; - out[15] = tab[30] + tab[17]; - out[31] = tab[31]; -} - -#if FRAC_BITS <= 15 - -static inline int round_sample(int *sum) -{ - int sum1; - sum1 = (*sum) >> OUT_SHIFT; - *sum &= (1< OUT_MAX) - sum1 = OUT_MAX; - return sum1; -} - -/* signed 16x16 -> 32 multiply add accumulate */ -#define MACS(rt, ra, rb) MAC16(rt, ra, rb) - -/* signed 16x16 -> 32 multiply */ -#define MULS(ra, rb) MUL16(ra, rb) - -#define MLSS(rt, ra, rb) MLS16(rt, ra, rb) - -#else - -static inline int round_sample(int64_t *sum) -{ - int sum1; - sum1 = (int)((*sum) >> OUT_SHIFT); - *sum &= (1< OUT_MAX) - sum1 = OUT_MAX; - return sum1; -} - -# define MULS(ra, rb) MUL64(ra, rb) -# define MACS(rt, ra, rb) MAC64(rt, ra, rb) -# define MLSS(rt, ra, rb) MLS64(rt, ra, rb) -#endif - -#define SUM8(op, sum, w, p) \ -{ \ - op(sum, (w)[0 * 64], p[0 * 64]); \ - op(sum, (w)[1 * 64], p[1 * 64]); \ - op(sum, (w)[2 * 64], p[2 * 64]); \ - op(sum, (w)[3 * 64], p[3 * 64]); \ - op(sum, (w)[4 * 64], p[4 * 64]); \ - op(sum, (w)[5 * 64], p[5 * 64]); \ - op(sum, (w)[6 * 64], p[6 * 64]); \ - op(sum, (w)[7 * 64], p[7 * 64]); \ -} - -#define SUM8P2(sum1, op1, sum2, op2, w1, w2, p) \ -{ \ - int tmp;\ - tmp = p[0 * 64];\ - op1(sum1, (w1)[0 * 64], tmp);\ - op2(sum2, (w2)[0 * 64], tmp);\ - tmp = p[1 * 64];\ - op1(sum1, (w1)[1 * 64], tmp);\ - op2(sum2, (w2)[1 * 64], tmp);\ - tmp = p[2 * 64];\ - op1(sum1, (w1)[2 * 64], tmp);\ - op2(sum2, (w2)[2 * 64], tmp);\ - tmp = p[3 * 64];\ - op1(sum1, (w1)[3 * 64], tmp);\ - op2(sum2, (w2)[3 * 64], tmp);\ - tmp = p[4 * 64];\ - op1(sum1, (w1)[4 * 64], tmp);\ - op2(sum2, (w2)[4 * 64], tmp);\ - tmp = p[5 * 64];\ - op1(sum1, (w1)[5 * 64], tmp);\ - op2(sum2, (w2)[5 * 64], tmp);\ - tmp = p[6 * 64];\ - op1(sum1, (w1)[6 * 64], tmp);\ - op2(sum2, (w2)[6 * 64], tmp);\ - tmp = p[7 * 64];\ - op1(sum1, (w1)[7 * 64], tmp);\ - op2(sum2, (w2)[7 * 64], tmp);\ + /* NOTE: we do frequency inversion adter the MDCT by changing + the sign of the right window coefs */ + for (j = 0; j < 4; j++) { + for (i = 0; i < 36; i += 2) { + mdct_win[j + 4][i ] = mdct_win[j][i ]; + mdct_win[j + 4][i + 1] = -mdct_win[j][i + 1]; + } + } } -void ff_mpa_synth_init(MPA_INT *window) +static av_cold int decode_init(AVCodecContext * avctx) { - int i; + static int initialized_tables = 0; + MPADecodeContext *s = avctx->priv_data; - /* max = 18760, max sum over all 16 coefs : 44736 */ - for(i=0;i<257;i++) { - int v; - v = ff_mpa_enwindow[i]; -#if WFRAC_BITS < 16 - v = (v + (1 << (16 - WFRAC_BITS - 1))) >> (16 - WFRAC_BITS); -#endif - window[i] = v; - if ((i & 63) != 0) - v = -v; - if (i != 0) - window[512 - i] = v; + if (!initialized_tables) { + decode_init_static(); + initialized_tables = 1; } -} -/* 32 sub band synthesis filter. Input: 32 sub band samples, Output: - 32 samples. */ -/* XXX: optimize by avoiding ring buffer usage */ -void ff_mpa_synth_filter(MPA_INT *synth_buf_ptr, int *synth_buf_offset, - MPA_INT *window, int *dither_state, - OUT_INT *samples, int incr, - int32_t sb_samples[SBLIMIT]) -{ - int32_t tmp[32]; - register MPA_INT *synth_buf; - register const MPA_INT *w, *w2, *p; - int j, offset, v; - OUT_INT *samples2; -#if FRAC_BITS <= 15 - int sum, sum2; -#else - int64_t sum, sum2; -#endif + s->avctx = avctx; - dct32(tmp, sb_samples); + ff_mpadsp_init(&s->mpadsp); - offset = *synth_buf_offset; - synth_buf = synth_buf_ptr + offset; + avctx->sample_fmt= OUT_FMT; + s->err_recognition = avctx->err_recognition; - for(j=0;j<32;j++) { - v = tmp[j]; -#if FRAC_BITS <= 15 - /* NOTE: can cause a loss in precision if very high amplitude - sound */ - v = av_clip_int16(v); -#endif - synth_buf[j] = v; - } - /* copy to avoid wrap */ - memcpy(synth_buf + 512, synth_buf, 32 * sizeof(MPA_INT)); - - samples2 = samples + 31 * incr; - w = window; - w2 = window + 31; - - sum = *dither_state; - p = synth_buf + 16; - SUM8(MACS, sum, w, p); - p = synth_buf + 48; - SUM8(MLSS, sum, w + 32, p); - *samples = round_sample(&sum); - samples += incr; - w++; - - /* we calculate two samples at the same time to avoid one memory - access per two sample */ - for(j=1;j<16;j++) { - sum2 = 0; - p = synth_buf + 16 + j; - SUM8P2(sum, MACS, sum2, MLSS, w, w2, p); - p = synth_buf + 48 - j; - SUM8P2(sum, MLSS, sum2, MLSS, w + 32, w2 + 32, p); - - *samples = round_sample(&sum); - samples += incr; - sum += sum2; - *samples2 = round_sample(&sum); - samples2 -= incr; - w++; - w2--; - } + if (avctx->codec_id == CODEC_ID_MP3ADU) + s->adu_mode = 1; - p = synth_buf + 32; - SUM8(MLSS, sum, w + 32, p); - *samples = round_sample(&sum); - *dither_state= sum; + avcodec_get_frame_defaults(&s->frame); + avctx->coded_frame = &s->frame; - offset = (offset - 32) & 511; - *synth_buf_offset = offset; + return 0; } #define C3 FIXHR(0.86602540378443864676/2) /* 0.5 / cos(pi*(2*i+1)/36) */ -static const int icos36[9] = { +static const INTFLOAT icos36[9] = { FIXR(0.50190991877167369479), FIXR(0.51763809020504152469), //0 FIXR(0.55168895948124587824), @@ -940,7 +498,7 @@ static const int icos36[9] = { }; /* 0.5 / cos(pi*(2*i+1)/36) */ -static const int icos36h[9] = { +static const INTFLOAT icos36h[9] = { FIXHR(0.50190991877167369479/2), FIXHR(0.51763809020504152469/2), //0 FIXHR(0.55168895948124587824/2), @@ -954,45 +512,45 @@ static const int icos36h[9] = { /* 12 points IMDCT. We compute it "by hand" by factorizing obvious cases. */ -static void imdct12(int *out, int *in) +static void imdct12(INTFLOAT *out, INTFLOAT *in) { - int in0, in1, in2, in3, in4, in5, t1, t2; - - in0= in[0*3]; - in1= in[1*3] + in[0*3]; - in2= in[2*3] + in[1*3]; - in3= in[3*3] + in[2*3]; - in4= in[4*3] + in[3*3]; - in5= in[5*3] + in[4*3]; + INTFLOAT in0, in1, in2, in3, in4, in5, t1, t2; + + in0 = in[0*3]; + in1 = in[1*3] + in[0*3]; + in2 = in[2*3] + in[1*3]; + in3 = in[3*3] + in[2*3]; + in4 = in[4*3] + in[3*3]; + in5 = in[5*3] + in[4*3]; in5 += in3; in3 += in1; - in2= MULH(2*in2, C3); - in3= MULH(4*in3, C3); - - t1 = in0 - in4; - t2 = MULH(2*(in1 - in5), icos36h[4]); - - out[ 7]= - out[10]= t1 + t2; - out[ 1]= - out[ 4]= t1 - t2; - - in0 += in4>>1; - in4 = in0 + in2; - in5 += 2*in1; - in1 = MULH(in5 + in3, icos36h[1]); - out[ 8]= - out[ 9]= in4 + in1; - out[ 2]= - out[ 3]= in4 - in1; - - in0 -= in2; - in5 = MULH(2*(in5 - in3), icos36h[7]); - out[ 0]= - out[ 5]= in0 - in5; - out[ 6]= - out[11]= in0 + in5; + in2 = MULH3(in2, C3, 2); + in3 = MULH3(in3, C3, 4); + + t1 = in0 - in4; + t2 = MULH3(in1 - in5, icos36h[4], 2); + + out[ 7] = + out[10] = t1 + t2; + out[ 1] = + out[ 4] = t1 - t2; + + in0 += SHR(in4, 1); + in4 = in0 + in2; + in5 += 2*in1; + in1 = MULH3(in5 + in3, icos36h[1], 1); + out[ 8] = + out[ 9] = in4 + in1; + out[ 2] = + out[ 3] = in4 - in1; + + in0 -= in2; + in5 = MULH3(in5 - in3, icos36h[7], 2); + out[ 0] = + out[ 5] = in0 - in5; + out[ 6] = + out[11] = in0 + in5; } /* cos(pi*i/18) */ @@ -1007,78 +565,50 @@ static void imdct12(int *out, int *in) /* using Lee like decomposition followed by hand coded 9 points DCT */ -static void imdct36(int *out, int *buf, int *in, int *win) +static void imdct36(INTFLOAT *out, INTFLOAT *buf, INTFLOAT *in, INTFLOAT *win) { - int i, j, t0, t1, t2, t3, s0, s1, s2, s3; - int tmp[18], *tmp1, *in1; + int i, j; + INTFLOAT t0, t1, t2, t3, s0, s1, s2, s3; + INTFLOAT tmp[18], *tmp1, *in1; - for(i=17;i>=1;i--) + for (i = 17; i >= 1; i--) in[i] += in[i-1]; - for(i=17;i>=3;i-=2) + for (i = 17; i >= 3; i -= 2) in[i] += in[i-2]; - for(j=0;j<2;j++) { + for (j = 0; j < 2; j++) { tmp1 = tmp + j; in1 = in + j; -#if 0 -//more accurate but slower - int64_t t0, t1, t2, t3; - t2 = in1[2*4] + in1[2*8] - in1[2*2]; - - t3 = (in1[2*0] + (int64_t)(in1[2*6]>>1))<<32; - t1 = in1[2*0] - in1[2*6]; - tmp1[ 6] = t1 - (t2>>1); - tmp1[16] = t1 + t2; - - t0 = MUL64(2*(in1[2*2] + in1[2*4]), C2); - t1 = MUL64( in1[2*4] - in1[2*8] , -2*C8); - t2 = MUL64(2*(in1[2*2] + in1[2*8]), -C4); - - tmp1[10] = (t3 - t0 - t2) >> 32; - tmp1[ 2] = (t3 + t0 + t1) >> 32; - tmp1[14] = (t3 + t2 - t1) >> 32; - - tmp1[ 4] = MULH(2*(in1[2*5] + in1[2*7] - in1[2*1]), -C3); - t2 = MUL64(2*(in1[2*1] + in1[2*5]), C1); - t3 = MUL64( in1[2*5] - in1[2*7] , -2*C7); - t0 = MUL64(2*in1[2*3], C3); - - t1 = MUL64(2*(in1[2*1] + in1[2*7]), -C5); - tmp1[ 0] = (t2 + t3 + t0) >> 32; - tmp1[12] = (t2 + t1 - t0) >> 32; - tmp1[ 8] = (t3 - t1 - t0) >> 32; -#else t2 = in1[2*4] + in1[2*8] - in1[2*2]; - t3 = in1[2*0] + (in1[2*6]>>1); + t3 = in1[2*0] + SHR(in1[2*6],1); t1 = in1[2*0] - in1[2*6]; - tmp1[ 6] = t1 - (t2>>1); + tmp1[ 6] = t1 - SHR(t2,1); tmp1[16] = t1 + t2; - t0 = MULH(2*(in1[2*2] + in1[2*4]), C2); - t1 = MULH( in1[2*4] - in1[2*8] , -2*C8); - t2 = MULH(2*(in1[2*2] + in1[2*8]), -C4); + t0 = MULH3(in1[2*2] + in1[2*4] , C2, 2); + t1 = MULH3(in1[2*4] - in1[2*8] , -2*C8, 1); + t2 = MULH3(in1[2*2] + in1[2*8] , -C4, 2); tmp1[10] = t3 - t0 - t2; tmp1[ 2] = t3 + t0 + t1; tmp1[14] = t3 + t2 - t1; - tmp1[ 4] = MULH(2*(in1[2*5] + in1[2*7] - in1[2*1]), -C3); - t2 = MULH(2*(in1[2*1] + in1[2*5]), C1); - t3 = MULH( in1[2*5] - in1[2*7] , -2*C7); - t0 = MULH(2*in1[2*3], C3); + tmp1[ 4] = MULH3(in1[2*5] + in1[2*7] - in1[2*1], -C3, 2); + t2 = MULH3(in1[2*1] + in1[2*5], C1, 2); + t3 = MULH3(in1[2*5] - in1[2*7], -2*C7, 1); + t0 = MULH3(in1[2*3], C3, 2); - t1 = MULH(2*(in1[2*1] + in1[2*7]), -C5); + t1 = MULH3(in1[2*1] + in1[2*7], -C5, 2); tmp1[ 0] = t2 + t3 + t0; tmp1[12] = t2 + t1 - t0; tmp1[ 8] = t3 - t1 - t0; -#endif } i = 0; - for(j=0;j<4;j++) { + for (j = 0; j < 4; j++) { t0 = tmp[i]; t1 = tmp[i + 2]; s0 = t1 + t0; @@ -1086,33 +616,33 @@ static void imdct36(int *out, int *buf, int *in, int *win) t2 = tmp[i + 1]; t3 = tmp[i + 3]; - s1 = MULH(2*(t3 + t2), icos36h[j]); - s3 = MULL(t3 - t2, icos36[8 - j], FRAC_BITS); + s1 = MULH3(t3 + t2, icos36h[ j], 2); + s3 = MULLx(t3 - t2, icos36 [8 - j], FRAC_BITS); t0 = s0 + s1; t1 = s0 - s1; - out[(9 + j)*SBLIMIT] = MULH(t1, win[9 + j]) + buf[9 + j]; - out[(8 - j)*SBLIMIT] = MULH(t1, win[8 - j]) + buf[8 - j]; - buf[9 + j] = MULH(t0, win[18 + 9 + j]); - buf[8 - j] = MULH(t0, win[18 + 8 - j]); + out[(9 + j) * SBLIMIT] = MULH3(t1, win[ 9 + j], 1) + buf[9 + j]; + out[(8 - j) * SBLIMIT] = MULH3(t1, win[ 8 - j], 1) + buf[8 - j]; + buf[ 9 + j ] = MULH3(t0, win[18 + 9 + j], 1); + buf[ 8 - j ] = MULH3(t0, win[18 + 8 - j], 1); t0 = s2 + s3; t1 = s2 - s3; - out[(9 + 8 - j)*SBLIMIT] = MULH(t1, win[9 + 8 - j]) + buf[9 + 8 - j]; - out[( j)*SBLIMIT] = MULH(t1, win[ j]) + buf[ j]; - buf[9 + 8 - j] = MULH(t0, win[18 + 9 + 8 - j]); - buf[ + j] = MULH(t0, win[18 + j]); + out[(9 + 8 - j) * SBLIMIT] = MULH3(t1, win[ 9 + 8 - j], 1) + buf[9 + 8 - j]; + out[ j * SBLIMIT] = MULH3(t1, win[ j], 1) + buf[ j]; + buf[ 9 + 8 - j ] = MULH3(t0, win[18 + 9 + 8 - j], 1); + buf[ j ] = MULH3(t0, win[18 + j], 1); i += 4; } s0 = tmp[16]; - s1 = MULH(2*tmp[17], icos36h[4]); + s1 = MULH3(tmp[17], icos36h[4], 2); t0 = s0 + s1; t1 = s0 - s1; - out[(9 + 4)*SBLIMIT] = MULH(t1, win[9 + 4]) + buf[9 + 4]; - out[(8 - 4)*SBLIMIT] = MULH(t1, win[8 - 4]) + buf[8 - 4]; - buf[9 + 4] = MULH(t0, win[18 + 9 + 4]); - buf[8 - 4] = MULH(t0, win[18 + 8 - 4]); + out[(9 + 4) * SBLIMIT] = MULH3(t1, win[ 9 + 4], 1) + buf[9 + 4]; + out[(8 - 4) * SBLIMIT] = MULH3(t1, win[ 8 - 4], 1) + buf[8 - 4]; + buf[ 9 + 4 ] = MULH3(t0, win[18 + 9 + 4], 1); + buf[ 8 - 4 ] = MULH3(t0, win[18 + 8 - 4], 1); } /* return the number of decoded frames */ @@ -1128,23 +658,22 @@ static int mp_decode_layer1(MPADecodeContext *s) bound = SBLIMIT; /* allocation bits */ - for(i=0;inb_channels;ch++) { + for (i = 0; i < bound; i++) { + for (ch = 0; ch < s->nb_channels; ch++) { allocation[ch][i] = get_bits(&s->gb, 4); } } - for(i=bound;igb, 4); - } /* scale factors */ - for(i=0;inb_channels;ch++) { + for (i = 0; i < bound; i++) { + for (ch = 0; ch < s->nb_channels; ch++) { if (allocation[ch][i]) scale_factors[ch][i] = get_bits(&s->gb, 6); } } - for(i=bound;igb, 6); scale_factors[1][i] = get_bits(&s->gb, 6); @@ -1152,9 +681,9 @@ static int mp_decode_layer1(MPADecodeContext *s) } /* compute samples */ - for(j=0;j<12;j++) { - for(i=0;inb_channels;ch++) { + for (j = 0; j < 12; j++) { + for (i = 0; i < bound; i++) { + for (ch = 0; ch < s->nb_channels; ch++) { n = allocation[ch][i]; if (n) { mant = get_bits(&s->gb, n + 1); @@ -1165,7 +694,7 @@ static int mp_decode_layer1(MPADecodeContext *s) s->sb_samples[ch][j][i] = v; } } - for(i=bound;igb, n + 1); @@ -1194,8 +723,8 @@ static int mp_decode_layer2(MPADecodeContext *s) /* select decoding table */ table = ff_mpa_l2_select_table(s->bit_rate / 1000, s->nb_channels, - s->sample_rate, s->lsf); - sblimit = ff_mpa_sblimit_table[table]; + s->sample_rate, s->lsf); + sblimit = ff_mpa_sblimit_table[table]; alloc_table = ff_mpa_alloc_tables[table]; if (s->mode == MPA_JSTEREO) @@ -1203,21 +732,21 @@ static int mp_decode_layer2(MPADecodeContext *s) else bound = sblimit; - dprintf(s->avctx, "bound=%d sblimit=%d\n", bound, sblimit); + av_dlog(s->avctx, "bound=%d sblimit=%d\n", bound, sblimit); /* sanity check */ - if( bound > sblimit ) bound = sblimit; + if (bound > sblimit) + bound = sblimit; /* parse bit allocation */ j = 0; - for(i=0;inb_channels;ch++) { + for (ch = 0; ch < s->nb_channels; ch++) bit_alloc[ch][i] = get_bits(&s->gb, bit_alloc_bits); - } j += 1 << bit_alloc_bits; } - for(i=bound;igb, bit_alloc_bits); bit_alloc[0][i] = v; @@ -1226,19 +755,19 @@ static int mp_decode_layer2(MPADecodeContext *s) } /* scale codes */ - for(i=0;inb_channels;ch++) { + for (i = 0; i < sblimit; i++) { + for (ch = 0; ch < s->nb_channels; ch++) { if (bit_alloc[ch][i]) scale_code[ch][i] = get_bits(&s->gb, 2); } } /* scale factors */ - for(i=0;inb_channels;ch++) { + for (i = 0; i < sblimit; i++) { + for (ch = 0; ch < s->nb_channels; ch++) { if (bit_alloc[ch][i]) { sf = scale_factors[ch][i]; - switch(scale_code[ch][i]) { + switch (scale_code[ch][i]) { default: case 0: sf[0] = get_bits(&s->gb, 6); @@ -1266,31 +795,32 @@ static int mp_decode_layer2(MPADecodeContext *s) } /* samples */ - for(k=0;k<3;k++) { - for(l=0;l<12;l+=3) { + for (k = 0; k < 3; k++) { + for (l = 0; l < 12; l += 3) { j = 0; - for(i=0;inb_channels;ch++) { + for (ch = 0; ch < s->nb_channels; ch++) { b = bit_alloc[ch][i]; if (b) { scale = scale_factors[ch][i][k]; qindex = alloc_table[j+b]; bits = ff_mpa_quant_bits[qindex]; if (bits < 0) { + int v2; /* 3 values at the same time */ v = get_bits(&s->gb, -bits); - steps = ff_mpa_quant_steps[qindex]; + v2 = division_tabs[qindex][v]; + steps = ff_mpa_quant_steps[qindex]; + s->sb_samples[ch][k * 12 + l + 0][i] = - l2_unscale_group(steps, v % steps, scale); - v = v / steps; + l2_unscale_group(steps, v2 & 15, scale); s->sb_samples[ch][k * 12 + l + 1][i] = - l2_unscale_group(steps, v % steps, scale); - v = v / steps; + l2_unscale_group(steps, (v2 >> 4) & 15, scale); s->sb_samples[ch][k * 12 + l + 2][i] = - l2_unscale_group(steps, v, scale); + l2_unscale_group(steps, v2 >> 8 , scale); } else { - for(m=0;m<3;m++) { + for (m = 0; m < 3; m++) { v = get_bits(&s->gb, bits); v = l1_unscale(bits - 1, v, scale); s->sb_samples[ch][k * 12 + l + m][i] = v; @@ -1306,7 +836,7 @@ static int mp_decode_layer2(MPADecodeContext *s) j += 1 << bit_alloc_bits; } /* XXX: find a way to avoid this duplication of code */ - for(i=bound;isb_samples[1][k * 12 + l + 2][i] = l2_unscale_group(steps, v, scale1); } else { - for(m=0;m<3;m++) { + for (m = 0; m < 3; m++) { mant = get_bits(&s->gb, bits); s->sb_samples[0][k * 12 + l + m][i] = l1_unscale(bits - 1, mant, scale0); @@ -1356,8 +886,8 @@ static int mp_decode_layer2(MPADecodeContext *s) j += 1 << bit_alloc_bits; } /* fill remaining samples to zero */ - for(i=sblimit;inb_channels;ch++) { + for (i = sblimit; i < SBLIMIT; i++) { + for (ch = 0; ch < s->nb_channels; ch++) { s->sb_samples[ch][k * 12 + l + 0][i] = 0; s->sb_samples[ch][k * 12 + l + 1][i] = 0; s->sb_samples[ch][k * 12 + l + 2][i] = 0; @@ -1368,28 +898,36 @@ static int mp_decode_layer2(MPADecodeContext *s) return 3 * 12; } -static inline void lsf_sf_expand(int *slen, - int sf, int n1, int n2, int n3) -{ - if (n3) { - slen[3] = sf % n3; - sf /= n3; - } else { - slen[3] = 0; +#define SPLIT(dst,sf,n) \ + if (n == 3) { \ + int m = (sf * 171) >> 9; \ + dst = sf - 3 * m; \ + sf = m; \ + } else if (n == 4) { \ + dst = sf & 3; \ + sf >>= 2; \ + } else if (n == 5) { \ + int m = (sf * 205) >> 10; \ + dst = sf - 5 * m; \ + sf = m; \ + } else if (n == 6) { \ + int m = (sf * 171) >> 10; \ + dst = sf - 6 * m; \ + sf = m; \ + } else { \ + dst = 0; \ } - if (n2) { - slen[2] = sf % n2; - sf /= n2; - } else { - slen[2] = 0; - } - slen[1] = sf % n1; - sf /= n1; + +static av_always_inline void lsf_sf_expand(int *slen, int sf, int n1, int n2, + int n3) +{ + SPLIT(slen[3], sf, n3) + SPLIT(slen[2], sf, n2) + SPLIT(slen[1], sf, n1) slen[0] = sf; } -static void exponents_from_scale_factors(MPADecodeContext *s, - GranuleDef *g, +static void exponents_from_scale_factors(MPADecodeContext *s, GranuleDef *g, int16_t *exponents) { const uint8_t *bstab, *pretab; @@ -1397,30 +935,30 @@ static void exponents_from_scale_factors(MPADecodeContext *s, int16_t *exp_ptr; exp_ptr = exponents; - gain = g->global_gain - 210; - shift = g->scalefac_scale + 1; + gain = g->global_gain - 210; + shift = g->scalefac_scale + 1; - bstab = band_size_long[s->sample_rate_index]; + bstab = band_size_long[s->sample_rate_index]; pretab = mpa_pretab[g->preflag]; - for(i=0;ilong_end;i++) { + for (i = 0; i < g->long_end; i++) { v0 = gain - ((g->scale_factors[i] + pretab[i]) << shift) + 400; len = bstab[i]; - for(j=len;j>0;j--) + for (j = len; j > 0; j--) *exp_ptr++ = v0; } if (g->short_start < 13) { - bstab = band_size_short[s->sample_rate_index]; + bstab = band_size_short[s->sample_rate_index]; gains[0] = gain - (g->subblock_gain[0] << 3); gains[1] = gain - (g->subblock_gain[1] << 3); gains[2] = gain - (g->subblock_gain[2] << 3); - k = g->long_end; - for(i=g->short_start;i<13;i++) { + k = g->long_end; + for (i = g->short_start; i < 13; i++) { len = bstab[i]; - for(l=0;l<3;l++) { + for (l = 0; l < 3; l++) { v0 = gains[l] - (g->scale_factors[k++] << shift) + 400; - for(j=len;j>0;j--) - *exp_ptr++ = v0; + for (j = len; j > 0; j--) + *exp_ptr++ = v0; } } } @@ -1429,25 +967,40 @@ static void exponents_from_scale_factors(MPADecodeContext *s, /* handle n = 0 too */ static inline int get_bitsz(GetBitContext *s, int n) { - if (n == 0) - return 0; - else - return get_bits(s, n); + return n ? get_bits(s, n) : 0; } -static void switch_buffer(MPADecodeContext *s, int *pos, int *end_pos, int *end_pos2){ - if(s->in_gb.buffer && *pos >= s->gb.size_in_bits){ - s->gb= s->in_gb; - s->in_gb.buffer=NULL; +static void switch_buffer(MPADecodeContext *s, int *pos, int *end_pos, + int *end_pos2) +{ + if (s->in_gb.buffer && *pos >= s->gb.size_in_bits) { + s->gb = s->in_gb; + s->in_gb.buffer = NULL; assert((get_bits_count(&s->gb) & 7) == 0); skip_bits_long(&s->gb, *pos - *end_pos); - *end_pos2= - *end_pos= *end_pos2 + get_bits_count(&s->gb) - *pos; - *pos= get_bits_count(&s->gb); + *end_pos2 = + *end_pos = *end_pos2 + get_bits_count(&s->gb) - *pos; + *pos = get_bits_count(&s->gb); } } +/* Following is a optimized code for + INTFLOAT v = *src + if(get_bits1(&s->gb)) + v = -v; + *dst = v; +*/ +#if CONFIG_FLOAT +#define READ_FLIP_SIGN(dst,src) \ + v = AV_RN32A(src) ^ (get_bits1(&s->gb) << 31); \ + AV_WN32A(dst, v); +#else +#define READ_FLIP_SIGN(dst,src) \ + v = -get_bits1(&s->gb); \ + *(dst) = (*(src) ^ v) - v; +#endif + static int huffman_decode(MPADecodeContext *s, GranuleDef *g, int16_t *exponents, int end_pos2) { @@ -1455,42 +1008,43 @@ static int huffman_decode(MPADecodeContext *s, GranuleDef *g, int i; int last_pos, bits_left; VLC *vlc; - int end_pos= FFMIN(end_pos2, s->gb.size_in_bits); + int end_pos = FFMIN(end_pos2, s->gb.size_in_bits); /* low frequencies (called big values) */ s_index = 0; - for(i=0;i<3;i++) { + for (i = 0; i < 3; i++) { int j, k, l, linbits; j = g->region_size[i]; if (j == 0) continue; /* select vlc table */ - k = g->table_select[i]; - l = mpa_huff_data[k][0]; + k = g->table_select[i]; + l = mpa_huff_data[k][0]; linbits = mpa_huff_data[k][1]; - vlc = &huff_vlc[l]; + vlc = &huff_vlc[l]; - if(!l){ - memset(&g->sb_hybrid[s_index], 0, sizeof(*g->sb_hybrid)*2*j); - s_index += 2*j; + if (!l) { + memset(&g->sb_hybrid[s_index], 0, sizeof(*g->sb_hybrid) * 2 * j); + s_index += 2 * j; continue; } /* read huffcode and compute each couple */ - for(;j>0;j--) { - int exponent, x, y, v; - int pos= get_bits_count(&s->gb); + for (; j > 0; j--) { + int exponent, x, y; + int v; + int pos = get_bits_count(&s->gb); if (pos >= end_pos){ // av_log(NULL, AV_LOG_ERROR, "pos: %d %d %d %d\n", pos, end_pos, end_pos2, s_index); switch_buffer(s, &pos, &end_pos, &end_pos2); // av_log(NULL, AV_LOG_ERROR, "new pos: %d %d\n", pos, end_pos); - if(pos >= end_pos) + if (pos >= end_pos) break; } y = get_vlc2(&s->gb, vlc->table, 7, 3); - if(!y){ + if (!y) { g->sb_hybrid[s_index ] = g->sb_hybrid[s_index+1] = 0; s_index += 2; @@ -1499,107 +1053,102 @@ static int huffman_decode(MPADecodeContext *s, GranuleDef *g, exponent= exponents[s_index]; - dprintf(s->avctx, "region=%d n=%d x=%d y=%d exp=%d\n", + av_dlog(s->avctx, "region=%d n=%d x=%d y=%d exp=%d\n", i, g->region_size[i] - j, x, y, exponent); - if(y&16){ + if (y & 16) { x = y >> 5; y = y & 0x0f; - if (x < 15){ - v = expval_table[ exponent ][ x ]; -// v = expval_table[ (exponent&3) ][ x ] >> FFMIN(0 - (exponent>>2), 31); - }else{ + if (x < 15) { + READ_FLIP_SIGN(g->sb_hybrid + s_index, RENAME(expval_table)[exponent] + x) + } else { x += get_bitsz(&s->gb, linbits); - v = l3_unscale(x, exponent); + v = l3_unscale(x, exponent); + if (get_bits1(&s->gb)) + v = -v; + g->sb_hybrid[s_index] = v; } - if (get_bits1(&s->gb)) - v = -v; - g->sb_hybrid[s_index] = v; - if (y < 15){ - v = expval_table[ exponent ][ y ]; - }else{ + if (y < 15) { + READ_FLIP_SIGN(g->sb_hybrid + s_index + 1, RENAME(expval_table)[exponent] + y) + } else { y += get_bitsz(&s->gb, linbits); - v = l3_unscale(y, exponent); + v = l3_unscale(y, exponent); + if (get_bits1(&s->gb)) + v = -v; + g->sb_hybrid[s_index+1] = v; } - if (get_bits1(&s->gb)) - v = -v; - g->sb_hybrid[s_index+1] = v; - }else{ + } else { x = y >> 5; y = y & 0x0f; x += y; - if (x < 15){ - v = expval_table[ exponent ][ x ]; - }else{ + if (x < 15) { + READ_FLIP_SIGN(g->sb_hybrid + s_index + !!y, RENAME(expval_table)[exponent] + x) + } else { x += get_bitsz(&s->gb, linbits); - v = l3_unscale(x, exponent); + v = l3_unscale(x, exponent); + if (get_bits1(&s->gb)) + v = -v; + g->sb_hybrid[s_index+!!y] = v; } - if (get_bits1(&s->gb)) - v = -v; - g->sb_hybrid[s_index+!!y] = v; - g->sb_hybrid[s_index+ !y] = 0; + g->sb_hybrid[s_index + !y] = 0; } - s_index+=2; + s_index += 2; } } /* high frequencies */ vlc = &huff_quad_vlc[g->count1table_select]; - last_pos=0; + last_pos = 0; while (s_index <= 572) { int pos, code; pos = get_bits_count(&s->gb); if (pos >= end_pos) { - if (pos > end_pos2 && last_pos){ + if (pos > end_pos2 && last_pos) { /* some encoders generate an incorrect size for this part. We must go back into the data */ s_index -= 4; skip_bits_long(&s->gb, last_pos - pos); av_log(s->avctx, AV_LOG_INFO, "overread, skip %d enddists: %d %d\n", last_pos - pos, end_pos-pos, end_pos2-pos); - if(s->error_recognition >= FF_ER_COMPLIANT) + if(s->err_recognition & AV_EF_BITSTREAM) s_index=0; break; } // av_log(NULL, AV_LOG_ERROR, "pos2: %d %d %d %d\n", pos, end_pos, end_pos2, s_index); switch_buffer(s, &pos, &end_pos, &end_pos2); // av_log(NULL, AV_LOG_ERROR, "new pos2: %d %d %d\n", pos, end_pos, s_index); - if(pos >= end_pos) + if (pos >= end_pos) break; } - last_pos= pos; + last_pos = pos; code = get_vlc2(&s->gb, vlc->table, vlc->bits, 1); - dprintf(s->avctx, "t=%d code=%d\n", g->count1table_select, code); - g->sb_hybrid[s_index+0]= - g->sb_hybrid[s_index+1]= - g->sb_hybrid[s_index+2]= - g->sb_hybrid[s_index+3]= 0; - while(code){ - static const int idxtab[16]={3,3,2,2,1,1,1,1,0,0,0,0,0,0,0,0}; + av_dlog(s->avctx, "t=%d code=%d\n", g->count1table_select, code); + g->sb_hybrid[s_index+0] = + g->sb_hybrid[s_index+1] = + g->sb_hybrid[s_index+2] = + g->sb_hybrid[s_index+3] = 0; + while (code) { + static const int idxtab[16] = { 3,3,2,2,1,1,1,1,0,0,0,0,0,0,0,0 }; int v; - int pos= s_index+idxtab[code]; - code ^= 8>>idxtab[code]; - v = exp_table[ exponents[pos] ]; -// v = exp_table[ (exponents[pos]&3) ] >> FFMIN(0 - (exponents[pos]>>2), 31); - if(get_bits1(&s->gb)) - v = -v; - g->sb_hybrid[pos] = v; + int pos = s_index + idxtab[code]; + code ^= 8 >> idxtab[code]; + READ_FLIP_SIGN(g->sb_hybrid + pos, RENAME(exp_table)+exponents[pos]) } - s_index+=4; + s_index += 4; } /* skip extension bits */ bits_left = end_pos2 - get_bits_count(&s->gb); //av_log(NULL, AV_LOG_ERROR, "left:%d buf:%p\n", bits_left, s->in_gb.buffer); - if (bits_left < 0 && s->error_recognition >= FF_ER_COMPLIANT) { + if (bits_left < 0 && (s->err_recognition & AV_EF_BITSTREAM)) { av_log(s->avctx, AV_LOG_ERROR, "bits_left=%d\n", bits_left); s_index=0; - }else if(bits_left > 0 && s->error_recognition >= FF_ER_AGGRESSIVE){ + } else if (bits_left > 0 && (s->err_recognition & AV_EF_BUFFER)) { av_log(s->avctx, AV_LOG_ERROR, "bits_left=%d\n", bits_left); - s_index=0; + s_index = 0; } - memset(&g->sb_hybrid[s_index], 0, sizeof(*g->sb_hybrid)*(576 - s_index)); + memset(&g->sb_hybrid[s_index], 0, sizeof(*g->sb_hybrid) * (576 - s_index)); skip_bits_long(&s->gb, bits_left); - i= get_bits_count(&s->gb); + i = get_bits_count(&s->gb); switch_buffer(s, &i, &end_pos, &end_pos2); return 0; @@ -1611,47 +1160,43 @@ static int huffman_decode(MPADecodeContext *s, GranuleDef *g, static void reorder_block(MPADecodeContext *s, GranuleDef *g) { int i, j, len; - int32_t *ptr, *dst, *ptr1; - int32_t tmp[576]; + INTFLOAT *ptr, *dst, *ptr1; + INTFLOAT tmp[576]; if (g->block_type != 2) return; if (g->switch_point) { - if (s->sample_rate_index != 8) { + if (s->sample_rate_index != 8) ptr = g->sb_hybrid + 36; - } else { + else ptr = g->sb_hybrid + 48; - } } else { ptr = g->sb_hybrid; } - for(i=g->short_start;i<13;i++) { - len = band_size_short[s->sample_rate_index][i]; + for (i = g->short_start; i < 13; i++) { + len = band_size_short[s->sample_rate_index][i]; ptr1 = ptr; - dst = tmp; - for(j=len;j>0;j--) { + dst = tmp; + for (j = len; j > 0; j--) { *dst++ = ptr[0*len]; *dst++ = ptr[1*len]; *dst++ = ptr[2*len]; ptr++; } - ptr+=2*len; + ptr += 2 * len; memcpy(ptr1, tmp, len * 3 * sizeof(*ptr1)); } } #define ISQRT2 FIXR(0.70710678118654752440) -static void compute_stereo(MPADecodeContext *s, - GranuleDef *g0, GranuleDef *g1) +static void compute_stereo(MPADecodeContext *s, GranuleDef *g0, GranuleDef *g1) { int i, j, k, l; - int32_t v1, v2; - int sf_max, tmp0, tmp1, sf, len, non_zero_found; - int32_t (*is_tab)[16]; - int32_t *tab0, *tab1; + int sf_max, sf, len, non_zero_found; + INTFLOAT (*is_tab)[16], *tab0, *tab1, tmp0, tmp1, v1, v2; int non_zero_found_short[3]; /* intensity stereo */ @@ -1671,17 +1216,17 @@ static void compute_stereo(MPADecodeContext *s, non_zero_found_short[1] = 0; non_zero_found_short[2] = 0; k = (13 - g1->short_start) * 3 + g1->long_end - 3; - for(i = 12;i >= g1->short_start;i--) { + for (i = 12; i >= g1->short_start; i--) { /* for last band, use previous scale factor */ if (i != 11) k -= 3; len = band_size_short[s->sample_rate_index][i]; - for(l=2;l>=0;l--) { + for (l = 2; l >= 0; l--) { tab0 -= len; tab1 -= len; if (!non_zero_found_short[l]) { /* test if non zero band. if so, stop doing i-stereo */ - for(j=0;jmode_ext & MODE_EXT_MS_STEREO) { /* lower part of the spectrum : do ms stereo if enabled */ - for(j=0;jlong_end - 1;i >= 0;i--) { - len = band_size_long[s->sample_rate_index][i]; + for (i = g1->long_end - 1;i >= 0;i--) { + len = band_size_long[s->sample_rate_index][i]; tab0 -= len; tab1 -= len; /* test if non zero band. if so, stop doing i-stereo */ if (!non_zero_found) { - for(j=0;jscale_factors[k]; if (sf >= sf_max) goto found2; v1 = is_tab[0][sf]; v2 = is_tab[1][sf]; - for(j=0;jmode_ext & MODE_EXT_MS_STEREO) { /* lower part of the spectrum : do ms stereo if enabled */ - for(j=0;jsb_hybrid; tab1 = g1->sb_hybrid; - for(i=0;i<576;i++) { - tmp0 = tab0[i]; - tmp1 = tab1[i]; + for (i = 0; i < 576; i++) { + tmp0 = tab0[i]; + tmp1 = tab1[i]; tab0[i] = tmp0 + tmp1; tab1[i] = tmp0 - tmp1; } } } -static void compute_antialias_integer(MPADecodeContext *s, - GranuleDef *g) -{ - int32_t *ptr, *csa; - int n, i; - - /* we antialias only "long" bands */ - if (g->block_type == 2) { - if (!g->switch_point) - return; - /* XXX: check this for 8000Hz case */ - n = 1; - } else { - n = SBLIMIT - 1; - } - - ptr = g->sb_hybrid + 18; - for(i = n;i > 0;i--) { - int tmp0, tmp1, tmp2; - csa = &csa_table[0][0]; -#define INT_AA(j) \ - tmp0 = ptr[-1-j];\ - tmp1 = ptr[ j];\ - tmp2= MULH(tmp0 + tmp1, csa[0+4*j]);\ - ptr[-1-j] = 4*(tmp2 - MULH(tmp1, csa[2+4*j]));\ - ptr[ j] = 4*(tmp2 + MULH(tmp0, csa[3+4*j])); - - INT_AA(0) - INT_AA(1) - INT_AA(2) - INT_AA(3) - INT_AA(4) - INT_AA(5) - INT_AA(6) - INT_AA(7) - - ptr += 18; - } -} +#if CONFIG_FLOAT +#define AA(j) do { \ + float tmp0 = ptr[-1-j]; \ + float tmp1 = ptr[ j]; \ + ptr[-1-j] = tmp0 * csa_table[j][0] - tmp1 * csa_table[j][1]; \ + ptr[ j] = tmp0 * csa_table[j][1] + tmp1 * csa_table[j][0]; \ + } while (0) +#else +#define AA(j) do { \ + int tmp0 = ptr[-1-j]; \ + int tmp1 = ptr[ j]; \ + int tmp2 = MULH(tmp0 + tmp1, csa_table[j][0]); \ + ptr[-1-j] = 4 * (tmp2 - MULH(tmp1, csa_table[j][2])); \ + ptr[ j] = 4 * (tmp2 + MULH(tmp0, csa_table[j][3])); \ + } while (0) +#endif -static void compute_antialias_float(MPADecodeContext *s, - GranuleDef *g) +static void compute_antialias(MPADecodeContext *s, GranuleDef *g) { - int32_t *ptr; + INTFLOAT *ptr; int n, i; /* we antialias only "long" bands */ @@ -1828,44 +1349,35 @@ static void compute_antialias_float(MPADecodeContext *s, } ptr = g->sb_hybrid + 18; - for(i = n;i > 0;i--) { - float tmp0, tmp1; - float *csa = &csa_table_float[0][0]; -#define FLOAT_AA(j)\ - tmp0= ptr[-1-j];\ - tmp1= ptr[ j];\ - ptr[-1-j] = lrintf(tmp0 * csa[0+4*j] - tmp1 * csa[1+4*j]);\ - ptr[ j] = lrintf(tmp0 * csa[1+4*j] + tmp1 * csa[0+4*j]); - - FLOAT_AA(0) - FLOAT_AA(1) - FLOAT_AA(2) - FLOAT_AA(3) - FLOAT_AA(4) - FLOAT_AA(5) - FLOAT_AA(6) - FLOAT_AA(7) + for (i = n; i > 0; i--) { + AA(0); + AA(1); + AA(2); + AA(3); + AA(4); + AA(5); + AA(6); + AA(7); ptr += 18; } } -static void compute_imdct(MPADecodeContext *s, - GranuleDef *g, - int32_t *sb_samples, - int32_t *mdct_buf) +static void compute_imdct(MPADecodeContext *s, GranuleDef *g, + INTFLOAT *sb_samples, INTFLOAT *mdct_buf) { - int32_t *ptr, *win, *win1, *buf, *out_ptr, *ptr1; - int32_t out2[12]; - int i, j, mdct_long_end, v, sblimit; + INTFLOAT *win, *win1, *out_ptr, *ptr, *buf, *ptr1; + INTFLOAT out2[12]; + int i, j, mdct_long_end, sblimit; /* find last non zero block */ - ptr = g->sb_hybrid + 576; + ptr = g->sb_hybrid + 576; ptr1 = g->sb_hybrid + 2 * 18; while (ptr >= ptr1) { + int32_t *p; ptr -= 6; - v = ptr[0] | ptr[1] | ptr[2] | ptr[3] | ptr[4] | ptr[5]; - if (v != 0) + p = (int32_t*)ptr; + if (p[0] | p[1] | p[2] | p[3] | p[4] | p[5]) break; } sblimit = ((ptr - g->sb_hybrid) / 18) + 1; @@ -1882,7 +1394,7 @@ static void compute_imdct(MPADecodeContext *s, buf = mdct_buf; ptr = g->sb_hybrid; - for(j=0;jlsf) { main_data_begin = get_bits(&s->gb, 8); - private_bits = get_bits(&s->gb, s->nb_channels); + skip_bits(&s->gb, s->nb_channels); nb_granules = 1; } else { main_data_begin = get_bits(&s->gb, 9); if (s->nb_channels == 2) - private_bits = get_bits(&s->gb, 3); + skip_bits(&s->gb, 3); else - private_bits = get_bits(&s->gb, 5); + skip_bits(&s->gb, 5); nb_granules = 2; - for(ch=0;chnb_channels;ch++) { - granules[ch][0].scfsi = 0; /* all scale factors are transmitted */ - granules[ch][1].scfsi = get_bits(&s->gb, 4); + for (ch = 0; ch < s->nb_channels; ch++) { + s->granules[ch][0].scfsi = 0;/* all scale factors are transmitted */ + s->granules[ch][1].scfsi = get_bits(&s->gb, 4); } } - for(gr=0;grnb_channels;ch++) { - dprintf(s->avctx, "gr=%d ch=%d: side_info\n", gr, ch); - g = &granules[ch][gr]; + for (gr = 0; gr < nb_granules; gr++) { + for (ch = 0; ch < s->nb_channels; ch++) { + av_dlog(s->avctx, "gr=%d ch=%d: side_info\n", gr, ch); + g = &s->granules[ch][gr]; g->part2_3_length = get_bits(&s->gb, 12); - g->big_values = get_bits(&s->gb, 9); - if(g->big_values > 288){ + g->big_values = get_bits(&s->gb, 9); + if (g->big_values > 288) { av_log(s->avctx, AV_LOG_ERROR, "big_values too big\n"); - return -1; + return AVERROR_INVALIDDATA; } g->global_gain = get_bits(&s->gb, 8); @@ -1990,26 +1502,26 @@ static int mp_decode_layer3(MPADecodeContext *s) blocksplit_flag = get_bits1(&s->gb); if (blocksplit_flag) { g->block_type = get_bits(&s->gb, 2); - if (g->block_type == 0){ + if (g->block_type == 0) { av_log(s->avctx, AV_LOG_ERROR, "invalid block type\n"); - return -1; + return AVERROR_INVALIDDATA; } g->switch_point = get_bits1(&s->gb); - for(i=0;i<2;i++) + for (i = 0; i < 2; i++) g->table_select[i] = get_bits(&s->gb, 5); - for(i=0;i<3;i++) + for (i = 0; i < 3; i++) g->subblock_gain[i] = get_bits(&s->gb, 3); ff_init_short_region(s, g); } else { int region_address1, region_address2; g->block_type = 0; g->switch_point = 0; - for(i=0;i<3;i++) + for (i = 0; i < 3; i++) g->table_select[i] = get_bits(&s->gb, 5); /* compute huffman coded region sizes */ region_address1 = get_bits(&s->gb, 4); region_address2 = get_bits(&s->gb, 3); - dprintf(s->avctx, "region1=%d region2=%d\n", + av_dlog(s->avctx, "region1=%d region2=%d\n", region_address1, region_address2); ff_init_long_region(s, g, region_address1, region_address2); } @@ -2019,38 +1531,38 @@ static int mp_decode_layer3(MPADecodeContext *s) g->preflag = 0; if (!s->lsf) g->preflag = get_bits1(&s->gb); - g->scalefac_scale = get_bits1(&s->gb); + g->scalefac_scale = get_bits1(&s->gb); g->count1table_select = get_bits1(&s->gb); - dprintf(s->avctx, "block_type=%d switch_point=%d\n", + av_dlog(s->avctx, "block_type=%d switch_point=%d\n", g->block_type, g->switch_point); } } - if (!s->adu_mode) { - const uint8_t *ptr = s->gb.buffer + (get_bits_count(&s->gb)>>3); - assert((get_bits_count(&s->gb) & 7) == 0); - /* now we get bits from the main_data_begin offset */ - dprintf(s->avctx, "seekback: %d\n", main_data_begin); -//av_log(NULL, AV_LOG_ERROR, "backstep:%d, lastbuf:%d\n", main_data_begin, s->last_buf_size); + if (!s->adu_mode) { + const uint8_t *ptr = s->gb.buffer + (get_bits_count(&s->gb)>>3); + assert((get_bits_count(&s->gb) & 7) == 0); + /* now we get bits from the main_data_begin offset */ + av_dlog(s->avctx, "seekback: %d\n", main_data_begin); + //av_log(NULL, AV_LOG_ERROR, "backstep:%d, lastbuf:%d\n", main_data_begin, s->last_buf_size); - memcpy(s->last_buf + s->last_buf_size, ptr, EXTRABYTES); - s->in_gb= s->gb; + memcpy(s->last_buf + s->last_buf_size, ptr, EXTRABYTES); + s->in_gb = s->gb; init_get_bits(&s->gb, s->last_buf, s->last_buf_size*8); skip_bits_long(&s->gb, 8*(s->last_buf_size - main_data_begin)); - } - - for(gr=0;grnb_channels;ch++) { - g = &granules[ch][gr]; - if(get_bits_count(&s->gb)<0){ - av_log(s->avctx, AV_LOG_ERROR, "mdb:%d, lastbuf:%d skipping granule %d\n", - main_data_begin, s->last_buf_size, gr); + } + + for (gr = 0; gr < nb_granules; gr++) { + for (ch = 0; ch < s->nb_channels; ch++) { + g = &s->granules[ch][gr]; + if (get_bits_count(&s->gb) < 0) { + av_log(s->avctx, AV_LOG_DEBUG, "mdb:%d, lastbuf:%d skipping granule %d\n", + main_data_begin, s->last_buf_size, gr); skip_bits_long(&s->gb, g->part2_3_length); memset(g->sb_hybrid, 0, sizeof(g->sb_hybrid)); - if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->in_gb.buffer){ + if (get_bits_count(&s->gb) >= s->gb.size_in_bits && s->in_gb.buffer) { skip_bits_long(&s->in_gb, get_bits_count(&s->gb) - s->gb.size_in_bits); - s->gb= s->in_gb; - s->in_gb.buffer=NULL; + s->gb = s->in_gb; + s->in_gb.buffer = NULL; } continue; } @@ -2064,43 +1576,43 @@ static int mp_decode_layer3(MPADecodeContext *s) /* MPEG1 scale factors */ slen1 = slen_table[0][g->scalefac_compress]; slen2 = slen_table[1][g->scalefac_compress]; - dprintf(s->avctx, "slen1=%d slen2=%d\n", slen1, slen2); + av_dlog(s->avctx, "slen1=%d slen2=%d\n", slen1, slen2); if (g->block_type == 2) { n = g->switch_point ? 17 : 18; j = 0; - if(slen1){ - for(i=0;iscale_factors[j++] = get_bits(&s->gb, slen1); - }else{ - for(i=0;iscale_factors[j++] = 0; } - if(slen2){ - for(i=0;i<18;i++) + if (slen2) { + for (i = 0; i < 18; i++) g->scale_factors[j++] = get_bits(&s->gb, slen2); - for(i=0;i<3;i++) + for (i = 0; i < 3; i++) g->scale_factors[j++] = 0; - }else{ - for(i=0;i<21;i++) + } else { + for (i = 0; i < 21; i++) g->scale_factors[j++] = 0; } } else { - sc = granules[ch][0].scale_factors; + sc = s->granules[ch][0].scale_factors; j = 0; - for(k=0;k<4;k++) { - n = (k == 0 ? 6 : 5); + for (k = 0; k < 4; k++) { + n = k == 0 ? 6 : 5; if ((g->scfsi & (0x8 >> k)) == 0) { slen = (k < 2) ? slen1 : slen2; - if(slen){ - for(i=0;iscale_factors[j++] = get_bits(&s->gb, slen); - }else{ - for(i=0;iscale_factors[j++] = 0; } } else { /* simply copy from last granule */ - for(i=0;iscale_factors[j] = sc[j]; j++; } @@ -2112,11 +1624,11 @@ static int mp_decode_layer3(MPADecodeContext *s) int tindex, tindex2, slen[4], sl, sf; /* LSF scale factors */ - if (g->block_type == 2) { + if (g->block_type == 2) tindex = g->switch_point ? 2 : 1; - } else { + else tindex = 0; - } + sf = g->scalefac_compress; if ((s->mode_ext & MODE_EXT_I_STEREO) && ch == 1) { /* intensity stereo case */ @@ -2147,19 +1659,19 @@ static int mp_decode_layer3(MPADecodeContext *s) } j = 0; - for(k=0;k<4;k++) { - n = lsf_nsf_table[tindex2][tindex][k]; + for (k = 0; k < 4; k++) { + n = lsf_nsf_table[tindex2][tindex][k]; sl = slen[k]; - if(sl){ - for(i=0;iscale_factors[j++] = get_bits(&s->gb, sl); - }else{ - for(i=0;iscale_factors[j++] = 0; } } /* XXX: should compute exact size */ - for(;j<40;j++) + for (; j < 40; j++) g->scale_factors[j] = 0; } @@ -2170,34 +1682,33 @@ static int mp_decode_layer3(MPADecodeContext *s) } /* ch */ if (s->nb_channels == 2) - compute_stereo(s, &granules[0][gr], &granules[1][gr]); + compute_stereo(s, &s->granules[0][gr], &s->granules[1][gr]); - for(ch=0;chnb_channels;ch++) { - g = &granules[ch][gr]; + for (ch = 0; ch < s->nb_channels; ch++) { + g = &s->granules[ch][gr]; reorder_block(s, g); - s->compute_antialias(s, g); + compute_antialias(s, g); compute_imdct(s, g, &s->sb_samples[ch][18 * gr][0], s->mdct_buf[ch]); } } /* gr */ - if(get_bits_count(&s->gb)<0) + if (get_bits_count(&s->gb) < 0) skip_bits_long(&s->gb, -get_bits_count(&s->gb)); return nb_granules * 18; } -static int mp_decode_frame(MPADecodeContext *s, - OUT_INT *samples, const uint8_t *buf, int buf_size) +static int mp_decode_frame(MPADecodeContext *s, OUT_INT *samples, + const uint8_t *buf, int buf_size) { - int i, nb_frames, ch; + int i, nb_frames, ch, ret; OUT_INT *samples_ptr; - init_get_bits(&s->gb, buf + HEADER_SIZE, (buf_size - HEADER_SIZE)*8); + init_get_bits(&s->gb, buf + HEADER_SIZE, (buf_size - HEADER_SIZE) * 8); /* skip error protection field */ if (s->error_protection) skip_bits(&s->gb, 16); - dprintf(s->avctx, "frame %d:\n", s->frame_count); switch(s->layer) { case 1: s->avctx->frame_size = 384; @@ -2213,40 +1724,50 @@ static int mp_decode_frame(MPADecodeContext *s, nb_frames = mp_decode_layer3(s); s->last_buf_size=0; - if(s->in_gb.buffer){ + if (s->in_gb.buffer) { align_get_bits(&s->gb); - i= (s->gb.size_in_bits - get_bits_count(&s->gb))>>3; - if(i >= 0 && i <= BACKSTEP_SIZE){ + i = get_bits_left(&s->gb)>>3; + if (i >= 0 && i <= BACKSTEP_SIZE) { memmove(s->last_buf, s->gb.buffer + (get_bits_count(&s->gb)>>3), i); s->last_buf_size=i; - }else + } else av_log(s->avctx, AV_LOG_ERROR, "invalid old backstep %d\n", i); - s->gb= s->in_gb; - s->in_gb.buffer= NULL; + s->gb = s->in_gb; + s->in_gb.buffer = NULL; } align_get_bits(&s->gb); assert((get_bits_count(&s->gb) & 7) == 0); - i= (s->gb.size_in_bits - get_bits_count(&s->gb))>>3; + i = get_bits_left(&s->gb) >> 3; - if(i<0 || i > BACKSTEP_SIZE || nb_frames<0){ - if(i<0) + if (i < 0 || i > BACKSTEP_SIZE || nb_frames < 0) { + if (i < 0) av_log(s->avctx, AV_LOG_ERROR, "invalid new backstep %d\n", i); - i= FFMIN(BACKSTEP_SIZE, buf_size - HEADER_SIZE); + i = FFMIN(BACKSTEP_SIZE, buf_size - HEADER_SIZE); } - assert(i <= buf_size - HEADER_SIZE && i>= 0); + assert(i <= buf_size - HEADER_SIZE && i >= 0); memcpy(s->last_buf + s->last_buf_size, s->gb.buffer + buf_size - HEADER_SIZE - i, i); s->last_buf_size += i; + } - break; + /* get output buffer */ + if (!samples) { + s->frame.nb_samples = s->avctx->frame_size; + if ((ret = s->avctx->get_buffer(s->avctx, &s->frame)) < 0) { + av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + return ret; + } + samples = (OUT_INT *)s->frame.data[0]; } /* apply the synthesis filter */ - for(ch=0;chnb_channels;ch++) { + for (ch = 0; ch < s->nb_channels; ch++) { samples_ptr = samples + ch; - for(i=0;isynth_buf[ch], &(s->synth_buf_offset[ch]), - window, &s->dither_state, + for (i = 0; i < nb_frames; i++) { + RENAME(ff_mpa_synth_filter)( + &s->mpadsp, + s->synth_buf[ch], &(s->synth_buf_offset[ch]), + RENAME(ff_mpa_synth_window), &s->dither_state, samples_ptr, s->nb_channels, s->sb_samples[ch][i]); samples_ptr += 32 * s->nb_channels; @@ -2256,78 +1777,87 @@ static int mp_decode_frame(MPADecodeContext *s, return nb_frames * 32 * sizeof(OUT_INT) * s->nb_channels; } -static int decode_frame(AVCodecContext * avctx, - void *data, int *data_size, - const uint8_t * buf, int buf_size) +static int decode_frame(AVCodecContext * avctx, void *data, int *got_frame_ptr, + AVPacket *avpkt) { + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; MPADecodeContext *s = avctx->priv_data; uint32_t header; int out_size; - OUT_INT *out_samples = data; -retry: - if(buf_size < HEADER_SIZE) - return -1; + if (buf_size < HEADER_SIZE) + return AVERROR_INVALIDDATA; header = AV_RB32(buf); - if(ff_mpa_check_header(header) < 0){ - buf++; -// buf_size--; - av_log(avctx, AV_LOG_ERROR, "Header missing skipping one byte.\n"); - goto retry; + if (ff_mpa_check_header(header) < 0) { + av_log(avctx, AV_LOG_ERROR, "Header missing\n"); + return AVERROR_INVALIDDATA; } - if (ff_mpegaudio_decode_header(s, header) == 1) { + if (avpriv_mpegaudio_decode_header((MPADecodeHeader *)s, header) == 1) { /* free format: prepare to compute frame size */ s->frame_size = -1; - return -1; + return AVERROR_INVALIDDATA; } /* update codec info */ - avctx->channels = s->nb_channels; - avctx->bit_rate = s->bit_rate; + avctx->channels = s->nb_channels; + avctx->channel_layout = s->nb_channels == 1 ? AV_CH_LAYOUT_MONO : AV_CH_LAYOUT_STEREO; + if (!avctx->bit_rate) + avctx->bit_rate = s->bit_rate; avctx->sub_id = s->layer; - if(s->frame_size<=0 || s->frame_size > buf_size){ + if (s->frame_size <= 0 || s->frame_size > buf_size) { av_log(avctx, AV_LOG_ERROR, "incomplete frame\n"); - return -1; - }else if(s->frame_size < buf_size){ + return AVERROR_INVALIDDATA; + } else if (s->frame_size < buf_size) { av_log(avctx, AV_LOG_ERROR, "incorrect frame size\n"); buf_size= s->frame_size; } - out_size = mp_decode_frame(s, out_samples, buf, buf_size); - if(out_size>=0){ - *data_size = out_size; + out_size = mp_decode_frame(s, NULL, buf, buf_size); + if (out_size >= 0) { + *got_frame_ptr = 1; + *(AVFrame *)data = s->frame; avctx->sample_rate = s->sample_rate; //FIXME maybe move the other codec info stuff from above here too - }else - av_log(avctx, AV_LOG_DEBUG, "Error while decoding MPEG audio frame.\n"); //FIXME return -1 / but also return the number of bytes consumed + } else { + av_log(avctx, AV_LOG_ERROR, "Error while decoding MPEG audio frame.\n"); + /* Only return an error if the bad frame makes up the whole packet. + If there is more data in the packet, just consume the bad frame + instead of returning an error, which would discard the whole + packet. */ + *got_frame_ptr = 0; + if (buf_size == avpkt->size) + return out_size; + } s->frame_size = 0; return buf_size; } -static void flush(AVCodecContext *avctx){ +static void flush(AVCodecContext *avctx) +{ MPADecodeContext *s = avctx->priv_data; memset(s->synth_buf, 0, sizeof(s->synth_buf)); - s->last_buf_size= 0; + s->last_buf_size = 0; } -#if CONFIG_MP3ADU_DECODER -static int decode_frame_adu(AVCodecContext * avctx, - void *data, int *data_size, - const uint8_t * buf, int buf_size) +#if CONFIG_MP3ADU_DECODER || CONFIG_MP3ADUFLOAT_DECODER +static int decode_frame_adu(AVCodecContext *avctx, void *data, + int *got_frame_ptr, AVPacket *avpkt) { + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; MPADecodeContext *s = avctx->priv_data; uint32_t header; int len, out_size; - OUT_INT *out_samples = data; len = buf_size; // Discard too short frames if (buf_size < HEADER_SIZE) { - *data_size = 0; - return buf_size; + av_log(avctx, AV_LOG_ERROR, "Packet is too small\n"); + return AVERROR_INVALIDDATA; } @@ -2338,58 +1868,92 @@ static int decode_frame_adu(AVCodecContext * avctx, header = AV_RB32(buf) | 0xffe00000; if (ff_mpa_check_header(header) < 0) { // Bad header, discard frame - *data_size = 0; - return buf_size; + av_log(avctx, AV_LOG_ERROR, "Invalid frame header\n"); + return AVERROR_INVALIDDATA; } - ff_mpegaudio_decode_header(s, header); + avpriv_mpegaudio_decode_header((MPADecodeHeader *)s, header); /* update codec info */ avctx->sample_rate = s->sample_rate; - avctx->channels = s->nb_channels; - avctx->bit_rate = s->bit_rate; + avctx->channels = s->nb_channels; + if (!avctx->bit_rate) + avctx->bit_rate = s->bit_rate; avctx->sub_id = s->layer; s->frame_size = len; - if (avctx->parse_only) { +#if FF_API_PARSE_FRAME + if (avctx->parse_only) out_size = buf_size; - } else { - out_size = mp_decode_frame(s, out_samples, buf, buf_size); - } + else +#endif + out_size = mp_decode_frame(s, NULL, buf, buf_size); + + *got_frame_ptr = 1; + *(AVFrame *)data = s->frame; - *data_size = out_size; return buf_size; } -#endif /* CONFIG_MP3ADU_DECODER */ +#endif /* CONFIG_MP3ADU_DECODER || CONFIG_MP3ADUFLOAT_DECODER */ -#if CONFIG_MP3ON4_DECODER +#if CONFIG_MP3ON4_DECODER || CONFIG_MP3ON4FLOAT_DECODER /** * Context for MP3On4 decoder */ typedef struct MP3On4DecodeContext { - int frames; ///< number of mp3 frames per block (number of mp3 decoder instances) - int syncword; ///< syncword patch - const uint8_t *coff; ///< channels offsets in output buffer + AVFrame *frame; + int frames; ///< number of mp3 frames per block (number of mp3 decoder instances) + int syncword; ///< syncword patch + const uint8_t *coff; ///< channel offsets in output buffer MPADecodeContext *mp3decctx[5]; ///< MPADecodeContext for every decoder instance + OUT_INT *decoded_buf; ///< output buffer for decoded samples } MP3On4DecodeContext; #include "mpeg4audio.h" /* Next 3 arrays are indexed by channel config number (passed via codecdata) */ -static const uint8_t mp3Frames[8] = {0,1,1,2,3,3,4,5}; /* number of mp3 decoder instances */ -/* offsets into output buffer, assume output order is FL FR BL BR C LFE */ + +/* number of mp3 decoder instances */ +static const uint8_t mp3Frames[8] = { 0, 1, 1, 2, 3, 3, 4, 5 }; + +/* offsets into output buffer, assume output order is FL FR C LFE BL BR SL SR */ static const uint8_t chan_offset[8][5] = { - {0}, - {0}, // C - {0}, // FLR - {2,0}, // C FLR - {2,0,3}, // C FLR BS - {4,0,2}, // C FLR BLRS - {4,0,2,5}, // C FLR BLRS LFE - {4,0,2,6,5}, // C FLR BLRS BLR LFE + { 0 }, + { 0 }, // C + { 0 }, // FLR + { 2, 0 }, // C FLR + { 2, 0, 3 }, // C FLR BS + { 2, 0, 3 }, // C FLR BLRS + { 2, 0, 4, 3 }, // C FLR BLRS LFE + { 2, 0, 6, 4, 3 }, // C FLR BLRS BLR LFE +}; + +/* mp3on4 channel layouts */ +static const int16_t chan_layout[8] = { + 0, + AV_CH_LAYOUT_MONO, + AV_CH_LAYOUT_STEREO, + AV_CH_LAYOUT_SURROUND, + AV_CH_LAYOUT_4POINT0, + AV_CH_LAYOUT_5POINT0, + AV_CH_LAYOUT_5POINT1, + AV_CH_LAYOUT_7POINT1 }; +static av_cold int decode_close_mp3on4(AVCodecContext * avctx) +{ + MP3On4DecodeContext *s = avctx->priv_data; + int i; + + for (i = 0; i < s->frames; i++) + av_free(s->mp3decctx[i]); + + av_freep(&s->decoded_buf); + + return 0; +} + static int decode_init_mp3on4(AVCodecContext * avctx) { @@ -2399,17 +1963,18 @@ static int decode_init_mp3on4(AVCodecContext * avctx) if ((avctx->extradata_size < 2) || (avctx->extradata == NULL)) { av_log(avctx, AV_LOG_ERROR, "Codec extradata missing or too short.\n"); - return -1; + return AVERROR_INVALIDDATA; } - ff_mpeg4audio_get_config(&cfg, avctx->extradata, avctx->extradata_size); + avpriv_mpeg4audio_get_config(&cfg, avctx->extradata, avctx->extradata_size); if (!cfg.chan_config || cfg.chan_config > 7) { av_log(avctx, AV_LOG_ERROR, "Invalid channel config number.\n"); - return -1; + return AVERROR_INVALIDDATA; } - s->frames = mp3Frames[cfg.chan_config]; - s->coff = chan_offset[cfg.chan_config]; - avctx->channels = ff_mpeg4audio_channels[cfg.chan_config]; + s->frames = mp3Frames[cfg.chan_config]; + s->coff = chan_offset[cfg.chan_config]; + avctx->channels = ff_mpeg4audio_channels[cfg.chan_config]; + avctx->channel_layout = chan_layout[cfg.chan_config]; if (cfg.sample_rate < 16000) s->syncword = 0xffe00000; @@ -2423,9 +1988,12 @@ static int decode_init_mp3on4(AVCodecContext * avctx) */ // Allocate zeroed memory for the first decoder context s->mp3decctx[0] = av_mallocz(sizeof(MPADecodeContext)); + if (!s->mp3decctx[0]) + goto alloc_fail; // Put decoder context in place to make init_decode() happy avctx->priv_data = s->mp3decctx[0]; decode_init(avctx); + s->frame = avctx->coded_frame; // Restore mp3on4 context pointer avctx->priv_data = s; s->mp3decctx[0]->adu_mode = 1; // Set adu mode @@ -2435,81 +2003,110 @@ static int decode_init_mp3on4(AVCodecContext * avctx) */ for (i = 1; i < s->frames; i++) { s->mp3decctx[i] = av_mallocz(sizeof(MPADecodeContext)); - s->mp3decctx[i]->compute_antialias = s->mp3decctx[0]->compute_antialias; + if (!s->mp3decctx[i]) + goto alloc_fail; s->mp3decctx[i]->adu_mode = 1; s->mp3decctx[i]->avctx = avctx; + s->mp3decctx[i]->mpadsp = s->mp3decctx[0]->mpadsp; + } + + /* Allocate buffer for multi-channel output if needed */ + if (s->frames > 1) { + s->decoded_buf = av_malloc(MPA_FRAME_SIZE * MPA_MAX_CHANNELS * + sizeof(*s->decoded_buf)); + if (!s->decoded_buf) + goto alloc_fail; } return 0; +alloc_fail: + decode_close_mp3on4(avctx); + return AVERROR(ENOMEM); } -static int decode_close_mp3on4(AVCodecContext * avctx) +static void flush_mp3on4(AVCodecContext *avctx) { - MP3On4DecodeContext *s = avctx->priv_data; int i; + MP3On4DecodeContext *s = avctx->priv_data; - for (i = 0; i < s->frames; i++) - if (s->mp3decctx[i]) - av_free(s->mp3decctx[i]); - - return 0; + for (i = 0; i < s->frames; i++) { + MPADecodeContext *m = s->mp3decctx[i]; + memset(m->synth_buf, 0, sizeof(m->synth_buf)); + m->last_buf_size = 0; + } } -static int decode_frame_mp3on4(AVCodecContext * avctx, - void *data, int *data_size, - const uint8_t * buf, int buf_size) +static int decode_frame_mp3on4(AVCodecContext *avctx, void *data, + int *got_frame_ptr, AVPacket *avpkt) { + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; MP3On4DecodeContext *s = avctx->priv_data; MPADecodeContext *m; int fsize, len = buf_size, out_size = 0; uint32_t header; - OUT_INT *out_samples = data; - OUT_INT decoded_buf[MPA_FRAME_SIZE * MPA_MAX_CHANNELS]; + OUT_INT *out_samples; OUT_INT *outptr, *bp; - int fr, j, n; + int fr, j, n, ch, ret; + + /* get output buffer */ + s->frame->nb_samples = MPA_FRAME_SIZE; + if ((ret = avctx->get_buffer(avctx, s->frame)) < 0) { + av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + return ret; + } + out_samples = (OUT_INT *)s->frame->data[0]; - *data_size = 0; // Discard too short frames if (buf_size < HEADER_SIZE) - return -1; + return AVERROR_INVALIDDATA; // If only one decoder interleave is not needed - outptr = s->frames == 1 ? out_samples : decoded_buf; + outptr = s->frames == 1 ? out_samples : s->decoded_buf; avctx->bit_rate = 0; + ch = 0; for (fr = 0; fr < s->frames; fr++) { fsize = AV_RB16(buf) >> 4; fsize = FFMIN3(fsize, len, MPA_MAX_CODED_FRAME_SIZE); - m = s->mp3decctx[fr]; - assert (m != NULL); + m = s->mp3decctx[fr]; + assert(m != NULL); header = (AV_RB32(buf) & 0x000fffff) | s->syncword; // patch header if (ff_mpa_check_header(header) < 0) // Bad header, discard block break; - ff_mpegaudio_decode_header(m, header); + avpriv_mpegaudio_decode_header((MPADecodeHeader *)m, header); + + if (ch + m->nb_channels > avctx->channels) { + av_log(avctx, AV_LOG_ERROR, "frame channel count exceeds codec " + "channel count\n"); + return AVERROR_INVALIDDATA; + } + ch += m->nb_channels; + out_size += mp_decode_frame(m, outptr, buf, fsize); - buf += fsize; - len -= fsize; + buf += fsize; + len -= fsize; - if(s->frames > 1) { + if (s->frames > 1) { n = m->avctx->frame_size*m->nb_channels; /* interleave output data */ bp = out_samples + s->coff[fr]; - if(m->nb_channels == 1) { - for(j = 0; j < n; j++) { - *bp = decoded_buf[j]; + if (m->nb_channels == 1) { + for (j = 0; j < n; j++) { + *bp = s->decoded_buf[j]; bp += avctx->channels; } } else { - for(j = 0; j < n; j++) { - bp[0] = decoded_buf[j++]; - bp[1] = decoded_buf[j]; - bp += avctx->channels; + for (j = 0; j < n; j++) { + bp[0] = s->decoded_buf[j++]; + bp[1] = s->decoded_buf[j]; + bp += avctx->channels; } } } @@ -2519,87 +2116,95 @@ static int decode_frame_mp3on4(AVCodecContext * avctx, /* update codec info */ avctx->sample_rate = s->mp3decctx[0]->sample_rate; - *data_size = out_size; + s->frame->nb_samples = out_size / (avctx->channels * sizeof(OUT_INT)); + *got_frame_ptr = 1; + *(AVFrame *)data = *s->frame; + return buf_size; } -#endif /* CONFIG_MP3ON4_DECODER */ +#endif /* CONFIG_MP3ON4_DECODER || CONFIG_MP3ON4FLOAT_DECODER */ +#if !CONFIG_FLOAT #if CONFIG_MP1_DECODER -AVCodec mp1_decoder = -{ - "mp1", - CODEC_TYPE_AUDIO, - CODEC_ID_MP1, - sizeof(MPADecodeContext), - decode_init, - NULL, - NULL, - decode_frame, - CODEC_CAP_PARSE_ONLY, - .flush= flush, - .long_name= NULL_IF_CONFIG_SMALL("MP1 (MPEG audio layer 1)"), +AVCodec ff_mp1_decoder = { + .name = "mp1", + .type = AVMEDIA_TYPE_AUDIO, + .id = CODEC_ID_MP1, + .priv_data_size = sizeof(MPADecodeContext), + .init = decode_init, + .decode = decode_frame, +#if FF_API_PARSE_FRAME + .capabilities = CODEC_CAP_PARSE_ONLY | CODEC_CAP_DR1, +#else + .capabilities = CODEC_CAP_DR1, +#endif + .flush = flush, + .long_name = NULL_IF_CONFIG_SMALL("MP1 (MPEG audio layer 1)"), }; #endif #if CONFIG_MP2_DECODER -AVCodec mp2_decoder = -{ - "mp2", - CODEC_TYPE_AUDIO, - CODEC_ID_MP2, - sizeof(MPADecodeContext), - decode_init, - NULL, - NULL, - decode_frame, - CODEC_CAP_PARSE_ONLY, - .flush= flush, - .long_name= NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"), +AVCodec ff_mp2_decoder = { + .name = "mp2", + .type = AVMEDIA_TYPE_AUDIO, + .id = CODEC_ID_MP2, + .priv_data_size = sizeof(MPADecodeContext), + .init = decode_init, + .decode = decode_frame, +#if FF_API_PARSE_FRAME + .capabilities = CODEC_CAP_PARSE_ONLY | CODEC_CAP_DR1, +#else + .capabilities = CODEC_CAP_DR1, +#endif + .flush = flush, + .long_name = NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"), }; #endif #if CONFIG_MP3_DECODER -AVCodec mp3_decoder = -{ - "mp3", - CODEC_TYPE_AUDIO, - CODEC_ID_MP3, - sizeof(MPADecodeContext), - decode_init, - NULL, - NULL, - decode_frame, - CODEC_CAP_PARSE_ONLY, - .flush= flush, - .long_name= NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"), +AVCodec ff_mp3_decoder = { + .name = "mp3", + .type = AVMEDIA_TYPE_AUDIO, + .id = CODEC_ID_MP3, + .priv_data_size = sizeof(MPADecodeContext), + .init = decode_init, + .decode = decode_frame, +#if FF_API_PARSE_FRAME + .capabilities = CODEC_CAP_PARSE_ONLY | CODEC_CAP_DR1, +#else + .capabilities = CODEC_CAP_DR1, +#endif + .flush = flush, + .long_name = NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"), }; #endif #if CONFIG_MP3ADU_DECODER -AVCodec mp3adu_decoder = -{ - "mp3adu", - CODEC_TYPE_AUDIO, - CODEC_ID_MP3ADU, - sizeof(MPADecodeContext), - decode_init, - NULL, - NULL, - decode_frame_adu, - CODEC_CAP_PARSE_ONLY, - .flush= flush, - .long_name= NULL_IF_CONFIG_SMALL("ADU (Application Data Unit) MP3 (MPEG audio layer 3)"), +AVCodec ff_mp3adu_decoder = { + .name = "mp3adu", + .type = AVMEDIA_TYPE_AUDIO, + .id = CODEC_ID_MP3ADU, + .priv_data_size = sizeof(MPADecodeContext), + .init = decode_init, + .decode = decode_frame_adu, +#if FF_API_PARSE_FRAME + .capabilities = CODEC_CAP_PARSE_ONLY | CODEC_CAP_DR1, +#else + .capabilities = CODEC_CAP_DR1, +#endif + .flush = flush, + .long_name = NULL_IF_CONFIG_SMALL("ADU (Application Data Unit) MP3 (MPEG audio layer 3)"), }; #endif #if CONFIG_MP3ON4_DECODER -AVCodec mp3on4_decoder = -{ - "mp3on4", - CODEC_TYPE_AUDIO, - CODEC_ID_MP3ON4, - sizeof(MP3On4DecodeContext), - decode_init_mp3on4, - NULL, - decode_close_mp3on4, - decode_frame_mp3on4, - .flush= flush, - .long_name= NULL_IF_CONFIG_SMALL("MP3onMP4"), +AVCodec ff_mp3on4_decoder = { + .name = "mp3on4", + .type = AVMEDIA_TYPE_AUDIO, + .id = CODEC_ID_MP3ON4, + .priv_data_size = sizeof(MP3On4DecodeContext), + .init = decode_init_mp3on4, + .close = decode_close_mp3on4, + .decode = decode_frame_mp3on4, + .capabilities = CODEC_CAP_DR1, + .flush = flush_mp3on4, + .long_name = NULL_IF_CONFIG_SMALL("MP3onMP4"), }; #endif +#endif