X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmpegaudiodec.c;h=875d1c8af1fc959e35f3d589e1706c55619771ee;hb=8709ba907a7f6f44e392161221d9628fa74b22f6;hp=f7f26443706344444568043c5f23b2c706fe0cae;hpb=a72580fc9efeb674257b4754ca5de0fa34b09be8;p=ffmpeg diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c index f7f26443706..875d1c8af1f 100644 --- a/libavcodec/mpegaudiodec.c +++ b/libavcodec/mpegaudiodec.c @@ -269,213 +269,207 @@ static inline int l3_unscale(int value, int exponent) return m; } -static av_cold int decode_init(AVCodecContext * avctx) +static void decode_init_static(AVCodec *codec) { - MPADecodeContext *s = avctx->priv_data; - static int init = 0; int i, j, k; + 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); + } - s->avctx = avctx; - - ff_mpadsp_init(&s->mpadsp); - - avctx->sample_fmt= OUT_FMT; - s->err_recognition = avctx->err_recognition; - -#if FF_API_PARSE_FRAME - if (!init && !avctx->parse_only) { -#else - if (!init) { -#endif - 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); - } - - /* 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(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]); - } + /* 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]); + } - RENAME(ff_mpa_synth_init)(RENAME(ff_mpa_synth_window)); + RENAME(ff_mpa_synth_init)(RENAME(ff_mpa_synth_window)); - /* 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]; + /* 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]; - memset(tmp_bits , 0, sizeof(tmp_bits )); - memset(tmp_codes, 0, sizeof(tmp_codes)); + memset(tmp_bits , 0, sizeof(tmp_bits )); + memset(tmp_codes, 0, sizeof(tmp_codes)); - xsize = h->xsize; + xsize = h->xsize; - 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++]; - } + 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++]; } - - /* 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)); - 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]; - } - band_index_long[i][22] = k; + /* 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)); + + 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]; } + band_index_long[i][22] = k; + } - /* 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); - } + /* 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); } } + } - for (i = 0; i < 7; i++) { - float f; - INTFLOAT 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; + for (i = 0; i < 7; i++) { + float f; + INTFLOAT v; + if (i != 6) { + f = tan((double)i * M_PI / 12.0); + v = FIXR(f / (1.0 + f)); + } else { + v = FIXR(1.0); } - /* 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(avctx, "is_table_lsf %d %d: %f %f\n", - i, j, (float) is_table_lsf[j][0][i], - (float) is_table_lsf[j][1][i]); - } + 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 < 8; i++) { - float ci, cs, ca; - ci = ci_table[i]; - cs = 1.0 / sqrt(1.0 + ci * ci); - ca = cs * ci; + 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); + 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; + csa_table[i][0] = cs; + csa_table[i][1] = ca; + csa_table[i][2] = ca + cs; + csa_table[i][3] = ca - cs; #endif - } - - /* 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) - mdct_win[j][i/3] = FIXHR((d / (1<<5))); - else { - int idx = i < 18 ? i : i + 2; - mdct_win[j][idx] = FIXHR((d / (1<<5))); - } - } - } + } - /* NOTE: we do frequency inversion adter the MDCT by changing - the sign of the right window coefs */ + /* compute mdct windows */ + for (i = 0; i < 36; i++) { for (j = 0; j < 4; j++) { - for (i = 0; i < 40; i += 2) { - mdct_win[j + 4][i ] = mdct_win[j][i ]; - mdct_win[j + 4][i + 1] = -mdct_win[j][i + 1]; + 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) + mdct_win[j][i/3] = FIXHR((d / (1<<5))); + else { + int idx = i < 18 ? i : i + 2; + mdct_win[j][idx] = FIXHR((d / (1<<5))); } } + } - init = 1; + /* 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 < 40; i += 2) { + mdct_win[j + 4][i ] = mdct_win[j][i ]; + mdct_win[j + 4][i + 1] = -mdct_win[j][i + 1]; + } } +} + +static av_cold int decode_init(AVCodecContext * avctx) +{ + MPADecodeContext *s = avctx->priv_data; + + s->avctx = avctx; + + ff_mpadsp_init(&s->mpadsp); + + avctx->sample_fmt= OUT_FMT; + s->err_recognition = avctx->err_recognition; if (avctx->codec_id == CODEC_ID_MP3ADU) s->adu_mode = 1; @@ -2002,6 +1996,7 @@ AVCodec ff_mp1_decoder = { .type = AVMEDIA_TYPE_AUDIO, .id = CODEC_ID_MP1, .priv_data_size = sizeof(MPADecodeContext), + .init_static_data = decode_init_static, .init = decode_init, .decode = decode_frame, #if FF_API_PARSE_FRAME @@ -2017,6 +2012,7 @@ AVCodec ff_mp2_decoder = { .type = AVMEDIA_TYPE_AUDIO, .id = CODEC_ID_MP2, .priv_data_size = sizeof(MPADecodeContext), + .init_static_data = decode_init_static, .init = decode_init, .decode = decode_frame, #if FF_API_PARSE_FRAME @@ -2032,6 +2028,7 @@ AVCodec ff_mp3_decoder = { .type = AVMEDIA_TYPE_AUDIO, .id = CODEC_ID_MP3, .priv_data_size = sizeof(MPADecodeContext), + .init_static_data = decode_init_static, .init = decode_init, .decode = decode_frame, #if FF_API_PARSE_FRAME @@ -2047,6 +2044,7 @@ AVCodec ff_mp3adu_decoder = { .type = AVMEDIA_TYPE_AUDIO, .id = CODEC_ID_MP3ADU, .priv_data_size = sizeof(MPADecodeContext), + .init_static_data = decode_init_static, .init = decode_init, .decode = decode_frame_adu, #if FF_API_PARSE_FRAME @@ -2062,6 +2060,7 @@ AVCodec ff_mp3on4_decoder = { .type = AVMEDIA_TYPE_AUDIO, .id = CODEC_ID_MP3ON4, .priv_data_size = sizeof(MP3On4DecodeContext), + .init_static_data = decode_init_static, .init = decode_init_mp3on4, .close = decode_close_mp3on4, .decode = decode_frame_mp3on4,