From 6c145ecf785dc3d26ba3fed3ea9892cc80244625 Mon Sep 17 00:00:00 2001 From: Diego Biurrun Date: Sat, 20 Jul 2013 00:06:29 +0200 Subject: twinvq: K&R formatting cosmetics --- libavcodec/twinvq.c | 592 +++++++++++++++++++++++++++------------------------- 1 file changed, 312 insertions(+), 280 deletions(-) (limited to 'libavcodec/twinvq.c') diff --git a/libavcodec/twinvq.c b/libavcodec/twinvq.c index a4c1e938e0..7b56140653 100644 --- a/libavcodec/twinvq.c +++ b/libavcodec/twinvq.c @@ -19,6 +19,9 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ +#include +#include + #include "libavutil/channel_layout.h" #include "libavutil/float_dsp.h" #include "avcodec.h" @@ -27,10 +30,6 @@ #include "internal.h" #include "lsp.h" #include "sinewin.h" - -#include -#include - #include "twinvq_data.h" enum FrameType { @@ -95,83 +94,83 @@ typedef struct { static const ModeTab mode_08_08 = { { - { 8, bark_tab_s08_64, 10, tab.fcb08s , 1, 5, tab.cb0808s0, tab.cb0808s1, 18}, - { 2, bark_tab_m08_256, 20, tab.fcb08m , 2, 5, tab.cb0808m0, tab.cb0808m1, 16}, - { 1, bark_tab_l08_512, 30, tab.fcb08l , 3, 6, tab.cb0808l0, tab.cb0808l1, 17} + { 8, bark_tab_s08_64, 10, tab.fcb08s, 1, 5, tab.cb0808s0, tab.cb0808s1, 18 }, + { 2, bark_tab_m08_256, 20, tab.fcb08m, 2, 5, tab.cb0808m0, tab.cb0808m1, 16 }, + { 1, bark_tab_l08_512, 30, tab.fcb08l, 3, 6, tab.cb0808l0, tab.cb0808l1, 17 } }, - 512 , 12, tab.lsp08, 1, 5, 3, 3, tab.shape08 , 8, 28, 20, 6, 40 + 512, 12, tab.lsp08, 1, 5, 3, 3, tab.shape08, 8, 28, 20, 6, 40 }; static const ModeTab mode_11_08 = { { - { 8, bark_tab_s11_64, 10, tab.fcb11s , 1, 5, tab.cb1108s0, tab.cb1108s1, 29}, - { 2, bark_tab_m11_256, 20, tab.fcb11m , 2, 5, tab.cb1108m0, tab.cb1108m1, 24}, - { 1, bark_tab_l11_512, 30, tab.fcb11l , 3, 6, tab.cb1108l0, tab.cb1108l1, 27} + { 8, bark_tab_s11_64, 10, tab.fcb11s, 1, 5, tab.cb1108s0, tab.cb1108s1, 29 }, + { 2, bark_tab_m11_256, 20, tab.fcb11m, 2, 5, tab.cb1108m0, tab.cb1108m1, 24 }, + { 1, bark_tab_l11_512, 30, tab.fcb11l, 3, 6, tab.cb1108l0, tab.cb1108l1, 27 } }, - 512 , 16, tab.lsp11, 1, 6, 4, 3, tab.shape11 , 9, 36, 30, 7, 90 + 512, 16, tab.lsp11, 1, 6, 4, 3, tab.shape11, 9, 36, 30, 7, 90 }; static const ModeTab mode_11_10 = { { - { 8, bark_tab_s11_64, 10, tab.fcb11s , 1, 5, tab.cb1110s0, tab.cb1110s1, 21}, - { 2, bark_tab_m11_256, 20, tab.fcb11m , 2, 5, tab.cb1110m0, tab.cb1110m1, 18}, - { 1, bark_tab_l11_512, 30, tab.fcb11l , 3, 6, tab.cb1110l0, tab.cb1110l1, 20} + { 8, bark_tab_s11_64, 10, tab.fcb11s, 1, 5, tab.cb1110s0, tab.cb1110s1, 21 }, + { 2, bark_tab_m11_256, 20, tab.fcb11m, 2, 5, tab.cb1110m0, tab.cb1110m1, 18 }, + { 1, bark_tab_l11_512, 30, tab.fcb11l, 3, 6, tab.cb1110l0, tab.cb1110l1, 20 } }, - 512 , 16, tab.lsp11, 1, 6, 4, 3, tab.shape11 , 9, 36, 30, 7, 90 + 512, 16, tab.lsp11, 1, 6, 4, 3, tab.shape11, 9, 36, 30, 7, 90 }; static const ModeTab mode_16_16 = { { - { 8, bark_tab_s16_128, 10, tab.fcb16s , 1, 5, tab.cb1616s0, tab.cb1616s1, 16}, - { 2, bark_tab_m16_512, 20, tab.fcb16m , 2, 5, tab.cb1616m0, tab.cb1616m1, 15}, - { 1, bark_tab_l16_1024,30, tab.fcb16l , 3, 6, tab.cb1616l0, tab.cb1616l1, 16} + { 8, bark_tab_s16_128, 10, tab.fcb16s, 1, 5, tab.cb1616s0, tab.cb1616s1, 16 }, + { 2, bark_tab_m16_512, 20, tab.fcb16m, 2, 5, tab.cb1616m0, tab.cb1616m1, 15 }, + { 1, bark_tab_l16_1024, 30, tab.fcb16l, 3, 6, tab.cb1616l0, tab.cb1616l1, 16 } }, - 1024, 16, tab.lsp16, 1, 6, 4, 3, tab.shape16 , 9, 56, 60, 7, 180 + 1024, 16, tab.lsp16, 1, 6, 4, 3, tab.shape16, 9, 56, 60, 7, 180 }; static const ModeTab mode_22_20 = { { - { 8, bark_tab_s22_128, 10, tab.fcb22s_1, 1, 6, tab.cb2220s0, tab.cb2220s1, 18}, - { 2, bark_tab_m22_512, 20, tab.fcb22m_1, 2, 6, tab.cb2220m0, tab.cb2220m1, 17}, - { 1, bark_tab_l22_1024,32, tab.fcb22l_1, 4, 6, tab.cb2220l0, tab.cb2220l1, 18} + { 8, bark_tab_s22_128, 10, tab.fcb22s_1, 1, 6, tab.cb2220s0, tab.cb2220s1, 18 }, + { 2, bark_tab_m22_512, 20, tab.fcb22m_1, 2, 6, tab.cb2220m0, tab.cb2220m1, 17 }, + { 1, bark_tab_l22_1024, 32, tab.fcb22l_1, 4, 6, tab.cb2220l0, tab.cb2220l1, 18 } }, 1024, 16, tab.lsp22_1, 1, 6, 4, 3, tab.shape22_1, 9, 56, 36, 7, 144 }; static const ModeTab mode_22_24 = { { - { 8, bark_tab_s22_128, 10, tab.fcb22s_1, 1, 6, tab.cb2224s0, tab.cb2224s1, 15}, - { 2, bark_tab_m22_512, 20, tab.fcb22m_1, 2, 6, tab.cb2224m0, tab.cb2224m1, 14}, - { 1, bark_tab_l22_1024,32, tab.fcb22l_1, 4, 6, tab.cb2224l0, tab.cb2224l1, 15} + { 8, bark_tab_s22_128, 10, tab.fcb22s_1, 1, 6, tab.cb2224s0, tab.cb2224s1, 15 }, + { 2, bark_tab_m22_512, 20, tab.fcb22m_1, 2, 6, tab.cb2224m0, tab.cb2224m1, 14 }, + { 1, bark_tab_l22_1024, 32, tab.fcb22l_1, 4, 6, tab.cb2224l0, tab.cb2224l1, 15 } }, 1024, 16, tab.lsp22_1, 1, 6, 4, 3, tab.shape22_1, 9, 56, 36, 7, 144 }; static const ModeTab mode_22_32 = { { - { 4, bark_tab_s22_128, 10, tab.fcb22s_2, 1, 6, tab.cb2232s0, tab.cb2232s1, 11}, - { 2, bark_tab_m22_256, 20, tab.fcb22m_2, 2, 6, tab.cb2232m0, tab.cb2232m1, 11}, - { 1, bark_tab_l22_512, 32, tab.fcb22l_2, 4, 6, tab.cb2232l0, tab.cb2232l1, 12} + { 4, bark_tab_s22_128, 10, tab.fcb22s_2, 1, 6, tab.cb2232s0, tab.cb2232s1, 11 }, + { 2, bark_tab_m22_256, 20, tab.fcb22m_2, 2, 6, tab.cb2232m0, tab.cb2232m1, 11 }, + { 1, bark_tab_l22_512, 32, tab.fcb22l_2, 4, 6, tab.cb2232l0, tab.cb2232l1, 12 } }, - 512 , 16, tab.lsp22_2, 1, 6, 4, 4, tab.shape22_2, 9, 56, 36, 7, 72 + 512, 16, tab.lsp22_2, 1, 6, 4, 4, tab.shape22_2, 9, 56, 36, 7, 72 }; static const ModeTab mode_44_40 = { { - {16, bark_tab_s44_128, 10, tab.fcb44s , 1, 6, tab.cb4440s0, tab.cb4440s1, 18}, - { 4, bark_tab_m44_512, 20, tab.fcb44m , 2, 6, tab.cb4440m0, tab.cb4440m1, 17}, - { 1, bark_tab_l44_2048,40, tab.fcb44l , 4, 6, tab.cb4440l0, tab.cb4440l1, 17} + { 16, bark_tab_s44_128, 10, tab.fcb44s, 1, 6, tab.cb4440s0, tab.cb4440s1, 18 }, + { 4, bark_tab_m44_512, 20, tab.fcb44m, 2, 6, tab.cb4440m0, tab.cb4440m1, 17 }, + { 1, bark_tab_l44_2048, 40, tab.fcb44l, 4, 6, tab.cb4440l0, tab.cb4440l1, 17 } }, - 2048, 20, tab.lsp44, 1, 6, 4, 4, tab.shape44 , 9, 84, 54, 7, 432 + 2048, 20, tab.lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432 }; static const ModeTab mode_44_48 = { { - {16, bark_tab_s44_128, 10, tab.fcb44s , 1, 6, tab.cb4448s0, tab.cb4448s1, 15}, - { 4, bark_tab_m44_512, 20, tab.fcb44m , 2, 6, tab.cb4448m0, tab.cb4448m1, 14}, - { 1, bark_tab_l44_2048,40, tab.fcb44l , 4, 6, tab.cb4448l0, tab.cb4448l1, 14} + { 16, bark_tab_s44_128, 10, tab.fcb44s, 1, 6, tab.cb4448s0, tab.cb4448s1, 15 }, + { 4, bark_tab_m44_512, 20, tab.fcb44m, 2, 6, tab.cb4448m0, tab.cb4448m1, 14 }, + { 1, bark_tab_l44_2048, 40, tab.fcb44l, 4, 6, tab.cb4448l0, tab.cb4448l1, 14 } }, - 2048, 20, tab.lsp44, 1, 6, 4, 4, tab.shape44 , 9, 84, 54, 7, 432 + 2048, 20, tab.lsp44, 1, 6, 4, 4, tab.shape44, 9, 84, 54, 7, 432 }; typedef struct TwinContext { @@ -242,17 +241,17 @@ static void memset_float(float *buf, float val, int size) static float eval_lpc_spectrum(const float *lsp, float cos_val, int order) { int j; - float p = 0.5f; - float q = 0.5f; - float two_cos_w = 2.0f*cos_val; + float p = 0.5f; + float q = 0.5f; + float two_cos_w = 2.0f * cos_val; - for (j = 0; j + 1 < order; j += 2*2) { + for (j = 0; j + 1 < order; j += 2 * 2) { // Unroll the loop once since order is a multiple of four - q *= lsp[j ] - two_cos_w; - p *= lsp[j+1] - two_cos_w; + q *= lsp[j] - two_cos_w; + p *= lsp[j + 1] - two_cos_w; - q *= lsp[j+2] - two_cos_w; - p *= lsp[j+3] - two_cos_w; + q *= lsp[j + 2] - two_cos_w; + p *= lsp[j + 3] - two_cos_w; } p *= p * (2.0f - two_cos_w); @@ -268,30 +267,30 @@ static void eval_lpcenv(TwinContext *tctx, const float *cos_vals, float *lpc) { int i; const ModeTab *mtab = tctx->mtab; - int size_s = mtab->size / mtab->fmode[FT_SHORT].sub; + int size_s = mtab->size / mtab->fmode[FT_SHORT].sub; - for (i = 0; i < size_s/2; i++) { + for (i = 0; i < size_s / 2; i++) { float cos_i = tctx->cos_tabs[0][i]; - lpc[i] = eval_lpc_spectrum(cos_vals, cos_i, mtab->n_lsp); - lpc[size_s-i-1] = eval_lpc_spectrum(cos_vals, -cos_i, mtab->n_lsp); + lpc[i] = eval_lpc_spectrum(cos_vals, cos_i, mtab->n_lsp); + lpc[size_s - i - 1] = eval_lpc_spectrum(cos_vals, -cos_i, mtab->n_lsp); } } static void interpolate(float *out, float v1, float v2, int size) { int i; - float step = (v1 - v2)/(size + 1); + float step = (v1 - v2) / (size + 1); for (i = 0; i < size; i++) { - v2 += step; + v2 += step; out[i] = v2; } } static inline float get_cos(int idx, int part, const float *cos_tab, int size) { - return part ? -cos_tab[size - idx - 1] : - cos_tab[ idx ]; + return part ? -cos_tab[size - idx - 1] + : cos_tab[idx]; } /** @@ -305,7 +304,7 @@ static inline float get_cos(int idx, int part, const float *cos_tab, int size) * @param step the size of a block "siiiibiiii" * @param in the cosinus of the LSP data * @param part is 0 for 0...PI (positive cossinus values) and 1 for PI...2PI - (negative cossinus values) + * (negative cossinus values) * @param size the size of the whole output */ static inline void eval_lpcenv_or_interp(TwinContext *tctx, @@ -314,7 +313,7 @@ static inline void eval_lpcenv_or_interp(TwinContext *tctx, int size, int step, int part) { int i; - const ModeTab *mtab = tctx->mtab; + const ModeTab *mtab = tctx->mtab; const float *cos_tab = tctx->cos_tabs[ftype]; // Fill the 's' @@ -325,33 +324,38 @@ static inline void eval_lpcenv_or_interp(TwinContext *tctx, mtab->n_lsp); // Fill the 'iiiibiiii' - for (i = step; i <= size - 2*step; i += step) { - if (out[i + step] + out[i - step] > 1.95*out[i] || - out[i + step] >= out[i - step]) { - interpolate(out + i - step + 1, out[i], out[i-step], step - 1); + for (i = step; i <= size - 2 * step; i += step) { + if (out[i + step] + out[i - step] > 1.95 * out[i] || + out[i + step] >= out[i - step]) { + interpolate(out + i - step + 1, out[i], out[i - step], step - 1); } else { - out[i - step/2] = + out[i - step / 2] = eval_lpc_spectrum(in, - get_cos(i-step/2, part, cos_tab, size), + get_cos(i - step / 2, part, cos_tab, size), mtab->n_lsp); - interpolate(out + i - step + 1, out[i-step/2], out[i-step ], step/2 - 1); - interpolate(out + i - step/2 + 1, out[i ], out[i-step/2], step/2 - 1); + interpolate(out + i - step + 1, out[i - step / 2], + out[i - step], step / 2 - 1); + interpolate(out + i - step / 2 + 1, out[i], + out[i - step / 2], step / 2 - 1); } } - interpolate(out + size - 2*step + 1, out[size-step], out[size - 2*step], step - 1); + interpolate(out + size - 2 * step + 1, out[size - step], + out[size - 2 * step], step - 1); } static void eval_lpcenv_2parts(TwinContext *tctx, enum FrameType ftype, const float *buf, float *lpc, int size, int step) { - eval_lpcenv_or_interp(tctx, ftype, lpc , buf, size/2, step, 0); - eval_lpcenv_or_interp(tctx, ftype, lpc + size/2, buf, size/2, 2*step, 1); + eval_lpcenv_or_interp(tctx, ftype, lpc, buf, size / 2, step, 0); + eval_lpcenv_or_interp(tctx, ftype, lpc + size / 2, buf, size / 2, + 2 * step, 1); - interpolate(lpc+size/2-step+1, lpc[size/2], lpc[size/2-step], step); + interpolate(lpc + size / 2 - step + 1, lpc[size / 2], + lpc[size / 2 - step], step); - memset_float(lpc + size - 2*step + 1, lpc[size - 2*step], 2*step - 1); + memset_float(lpc + size - 2 * step + 1, lpc[size - 2 * step], 2 * step - 1); } /** @@ -392,26 +396,26 @@ static void dequant(TwinContext *tctx, GetBitContext *gb, float *out, } tmp1 = get_bits(gb, bits); - tab0 = cb0 + tmp0*cb_len; - tab1 = cb1 + tmp1*cb_len; + tab0 = cb0 + tmp0 * cb_len; + tab1 = cb1 + tmp1 * cb_len; for (j = 0; j < length; j++) - out[tctx->permut[ftype][pos+j]] = sign0*tab0[j] + sign1*tab1[j]; + out[tctx->permut[ftype][pos + j]] = sign0 * tab0[j] + + sign1 * tab1[j]; pos += length; } - } static inline float mulawinv(float y, float clip, float mu) { - y = av_clipf(y/clip, -1, 1); - return clip * FFSIGN(y) * (exp(log(1+mu) * fabs(y)) - 1) / mu; + y = av_clipf(y / clip, -1, 1); + return clip * FFSIGN(y) * (exp(log(1 + mu) * fabs(y)) - 1) / mu; } /** - * Evaluate a*b/400 rounded to the nearest integer. When, for example, - * a*b == 200 and the nearest integer is ill-defined, use a table to emulate + * Evaluate a * b / 400 rounded to the nearest integer. When, for example, + * a * b == 200 and the nearest integer is ill-defined, use a table to emulate * the following broken float-based implementation used by the binary decoder: * * @code @@ -419,30 +423,30 @@ static inline float mulawinv(float y, float clip, float mu) * { * static float test; // Ugh, force gcc to do the division first... * - * test = a/400.; - * return b * test + 0.5; + * test = a / 400.; + * return b * test + 0.5; * } * @endcode * - * @note if this function is replaced by just ROUNDED_DIV(a*b,400.), the stddev - * between the original file (before encoding with Yamaha encoder) and the - * decoded output increases, which leads one to believe that the encoder expects - * exactly this broken calculation. + * @note if this function is replaced by just ROUNDED_DIV(a * b, 400.), the + * stddev between the original file (before encoding with Yamaha encoder) and + * the decoded output increases, which leads one to believe that the encoder + * expects exactly this broken calculation. */ static int very_broken_op(int a, int b) { - int x = a*b + 200; + int x = a * b + 200; int size; const uint8_t *rtab; - if (x%400 || b%5) - return x/400; + if (x % 400 || b % 5) + return x / 400; x /= 400; - size = tabs[b/5].size; - rtab = tabs[b/5].tab; - return x - rtab[size*av_log2(2*(x - 1)/size)+(x - 1)%size]; + size = tabs[b / 5].size; + rtab = tabs[b / 5].tab; + return x - rtab[size * av_log2(2 * (x - 1) / size) + (x - 1) % size]; } /** @@ -459,42 +463,44 @@ static void add_peak(int period, int width, const float *shape, int center; // First peak centered around zero - for (i = 0; i < width/2; i++) + for (i = 0; i < width / 2; i++) speech[i] += ppc_gain * *shape++; - for (i = 1; i < ROUNDED_DIV(len,width) ; i++) { + for (i = 1; i < ROUNDED_DIV(len, width); i++) { center = very_broken_op(period, i); - for (j = -width/2; j < (width+1)/2; j++) - speech[j+center] += ppc_gain * *shape++; + for (j = -width / 2; j < (width + 1) / 2; j++) + speech[j + center] += ppc_gain * *shape++; } // For the last block, be careful not to go beyond the end of the buffer center = very_broken_op(period, i); - for (j = -width/2; j < (width + 1)/2 && shape < shape_end; j++) - speech[j+center] += ppc_gain * *shape++; + for (j = -width / 2; j < (width + 1) / 2 && shape < shape_end; j++) + speech[j + center] += ppc_gain * *shape++; } static void decode_ppc(TwinContext *tctx, int period_coef, const float *shape, float ppc_gain, float *speech) { const ModeTab *mtab = tctx->mtab; - int isampf = tctx->avctx->sample_rate/1000; - int ibps = tctx->avctx->bit_rate/(1000 * tctx->avctx->channels); - int min_period = ROUNDED_DIV( 40*2*mtab->size, isampf); - int max_period = ROUNDED_DIV(6*40*2*mtab->size, isampf); - int period_range = max_period - min_period; + int isampf = tctx->avctx->sample_rate / 1000; + int ibps = tctx->avctx->bit_rate / (1000 * tctx->avctx->channels); + int min_period = ROUNDED_DIV(40 * 2 * mtab->size, isampf); + int max_period = ROUNDED_DIV(40 * 2 * mtab->size * 6, isampf); + int period_range = max_period - min_period; // This is actually the period multiplied by 400. It is just linearly coded // between its maximum and minimum value. int period = min_period + - ROUNDED_DIV(period_coef*period_range, (1 << mtab->ppc_period_bit) - 1); + ROUNDED_DIV(period_coef * period_range, + (1 << mtab->ppc_period_bit) - 1); int width; if (isampf == 22 && ibps == 32) { // For some unknown reason, NTT decided to code this case differently... - width = ROUNDED_DIV((period + 800)* mtab->peak_per2wid, 400*mtab->size); + width = ROUNDED_DIV((period + 800) * mtab->peak_per2wid, + 400 * mtab->size); } else - width = (period )* mtab->peak_per2wid/(400*mtab->size); + width = period * mtab->peak_per2wid / (400 * mtab->size); add_peak(period, width, shape, ppc_gain, speech, mtab->ppc_shape_len); } @@ -504,27 +510,26 @@ static void dec_gain(TwinContext *tctx, GetBitContext *gb, enum FrameType ftype, { const ModeTab *mtab = tctx->mtab; int i, j; - int sub = mtab->fmode[ftype].sub; - float step = AMP_MAX / ((1 << GAIN_BITS) - 1); + int sub = mtab->fmode[ftype].sub; + float step = AMP_MAX / ((1 << GAIN_BITS) - 1); float sub_step = SUB_AMP_MAX / ((1 << SUB_GAIN_BITS) - 1); if (ftype == FT_LONG) { for (i = 0; i < tctx->avctx->channels; i++) - out[i] = (1./(1<<13)) * - mulawinv(step * 0.5 + step * get_bits(gb, GAIN_BITS), - AMP_MAX, MULAW_MU); + out[i] = (1. / (1 << 13)) * + mulawinv(step * 0.5 + step * get_bits(gb, GAIN_BITS), + AMP_MAX, MULAW_MU); } else { for (i = 0; i < tctx->avctx->channels; i++) { - float val = (1./(1<<23)) * - mulawinv(step * 0.5 + step * get_bits(gb, GAIN_BITS), - AMP_MAX, MULAW_MU); - - for (j = 0; j < sub; j++) { - out[i*sub + j] = - val*mulawinv(sub_step* 0.5 + - sub_step* get_bits(gb, SUB_GAIN_BITS), - SUB_AMP_MAX, MULAW_MU); - } + float val = (1. / (1 << 23)) * + mulawinv(step * 0.5 + step * get_bits(gb, GAIN_BITS), + AMP_MAX, MULAW_MU); + + for (j = 0; j < sub; j++) + out[i * sub + j] = + val * mulawinv(sub_step * 0.5 + + sub_step * get_bits(gb, SUB_GAIN_BITS), + SUB_AMP_MAX, MULAW_MU); } } } @@ -540,11 +545,11 @@ static void rearrange_lsp(int order, float *lsp, float min_dist) int i; float min_dist2 = min_dist * 0.5; for (i = 1; i < order; i++) - if (lsp[i] - lsp[i-1] < min_dist) { - float avg = (lsp[i] + lsp[i-1]) * 0.5; + if (lsp[i] - lsp[i - 1] < min_dist) { + float avg = (lsp[i] + lsp[i - 1]) * 0.5; - lsp[i-1] = avg - min_dist2; - lsp[i ] = avg + min_dist2; + lsp[i - 1] = avg - min_dist2; + lsp[i] = avg + min_dist2; } } @@ -554,9 +559,9 @@ static void decode_lsp(TwinContext *tctx, int lpc_idx1, uint8_t *lpc_idx2, const ModeTab *mtab = tctx->mtab; int i, j; - const float *cb = mtab->lspcodebook; - const float *cb2 = cb + (1 << mtab->lsp_bit1)*mtab->n_lsp; - const float *cb3 = cb2 + (1 << mtab->lsp_bit2)*mtab->n_lsp; + const float *cb = mtab->lspcodebook; + const float *cb2 = cb + (1 << mtab->lsp_bit1) * mtab->n_lsp; + const float *cb3 = cb2 + (1 << mtab->lsp_bit2) * mtab->n_lsp; const int8_t funny_rounding[4] = { -2, @@ -567,17 +572,18 @@ static void decode_lsp(TwinContext *tctx, int lpc_idx1, uint8_t *lpc_idx2, j = 0; for (i = 0; i < mtab->lsp_split; i++) { - int chunk_end = ((i + 1)*mtab->n_lsp + funny_rounding[i])/mtab->lsp_split; + int chunk_end = ((i + 1) * mtab->n_lsp + funny_rounding[i]) / + mtab->lsp_split; for (; j < chunk_end; j++) - lsp[j] = cb [lpc_idx1 * mtab->n_lsp + j] + + lsp[j] = cb[lpc_idx1 * mtab->n_lsp + j] + cb2[lpc_idx2[i] * mtab->n_lsp + j]; } rearrange_lsp(mtab->n_lsp, lsp, 0.0001); for (i = 0; i < mtab->n_lsp; i++) { - float tmp1 = 1. - cb3[lpc_hist_idx*mtab->n_lsp + i]; - float tmp2 = hist[i] * cb3[lpc_hist_idx*mtab->n_lsp + i]; + float tmp1 = 1. - cb3[lpc_hist_idx * mtab->n_lsp + i]; + float tmp2 = hist[i] * cb3[lpc_hist_idx * mtab->n_lsp + i]; hist[i] = lsp[i]; lsp[i] = lsp[i] * tmp1 + tmp2; } @@ -594,7 +600,7 @@ static void dec_lpc_spectrum_inv(TwinContext *tctx, float *lsp, int size = tctx->mtab->size / tctx->mtab->fmode[ftype].sub; for (i = 0; i < tctx->mtab->n_lsp; i++) - lsp[i] = 2*cos(lsp[i]); + lsp[i] = 2 * cos(lsp[i]); switch (ftype) { case FT_LONG: @@ -609,74 +615,71 @@ static void dec_lpc_spectrum_inv(TwinContext *tctx, float *lsp, } } +static const uint8_t wtype_to_wsize[] = { 0, 0, 2, 2, 2, 1, 0, 1, 1 }; + static void imdct_and_window(TwinContext *tctx, enum FrameType ftype, int wtype, - float *in, float *prev, int ch) + float *in, float *prev, int ch) { - FFTContext *mdct = &tctx->mdct_ctx[ftype]; + FFTContext *mdct = &tctx->mdct_ctx[ftype]; const ModeTab *mtab = tctx->mtab; - int bsize = mtab->size / mtab->fmode[ftype].sub; - int size = mtab->size; - float *buf1 = tctx->tmp_buf; - int j; - int wsize; // Window size - float *out = tctx->curr_frame + 2*ch*mtab->size; + int bsize = mtab->size / mtab->fmode[ftype].sub; + int size = mtab->size; + float *buf1 = tctx->tmp_buf; + int j, first_wsize, wsize; // Window size + float *out = tctx->curr_frame + 2 * ch * mtab->size; float *out2 = out; float *prev_buf; - int first_wsize; - - static const uint8_t wtype_to_wsize[] = {0, 0, 2, 2, 2, 1, 0, 1, 1}; int types_sizes[] = { - mtab->size / mtab->fmode[FT_LONG ].sub, - mtab->size / mtab->fmode[FT_MEDIUM].sub, - mtab->size / (2*mtab->fmode[FT_SHORT ].sub), + mtab->size / mtab->fmode[FT_LONG].sub, + mtab->size / mtab->fmode[FT_MEDIUM].sub, + mtab->size / (mtab->fmode[FT_SHORT].sub * 2), }; - wsize = types_sizes[wtype_to_wsize[wtype]]; + wsize = types_sizes[wtype_to_wsize[wtype]]; first_wsize = wsize; - prev_buf = prev + (size - bsize)/2; + prev_buf = prev + (size - bsize) / 2; for (j = 0; j < mtab->fmode[ftype].sub; j++) { int sub_wtype = ftype == FT_MEDIUM ? 8 : wtype; if (!j && wtype == 4) sub_wtype = 4; - else if (j == mtab->fmode[ftype].sub-1 && wtype == 7) + else if (j == mtab->fmode[ftype].sub - 1 && wtype == 7) sub_wtype = 7; wsize = types_sizes[wtype_to_wsize[sub_wtype]]; - mdct->imdct_half(mdct, buf1 + bsize*j, in + bsize*j); + mdct->imdct_half(mdct, buf1 + bsize * j, in + bsize * j); - tctx->fdsp.vector_fmul_window(out2, prev_buf + (bsize-wsize) / 2, + tctx->fdsp.vector_fmul_window(out2, prev_buf + (bsize - wsize) / 2, buf1 + bsize * j, ff_sine_windows[av_log2(wsize)], wsize / 2); out2 += wsize; - memcpy(out2, buf1 + bsize*j + wsize/2, (bsize - wsize/2)*sizeof(float)); + memcpy(out2, buf1 + bsize * j + wsize / 2, + (bsize - wsize / 2) * sizeof(float)); - out2 += ftype == FT_MEDIUM ? (bsize-wsize)/2 : bsize - wsize; + out2 += ftype == FT_MEDIUM ? (bsize - wsize) / 2 : bsize - wsize; - prev_buf = buf1 + bsize*j + bsize/2; + prev_buf = buf1 + bsize * j + bsize / 2; } - tctx->last_block_pos[ch] = (size + first_wsize)/2; + tctx->last_block_pos[ch] = (size + first_wsize) / 2; } static void imdct_output(TwinContext *tctx, enum FrameType ftype, int wtype, float **out) { const ModeTab *mtab = tctx->mtab; - int size1, size2; - float *prev_buf = tctx->prev_frame + tctx->last_block_pos[0]; - int i; + float *prev_buf = tctx->prev_frame + tctx->last_block_pos[0]; + int size1, size2, i; - for (i = 0; i < tctx->avctx->channels; i++) { + for (i = 0; i < tctx->avctx->channels; i++) imdct_and_window(tctx, ftype, wtype, - tctx->spectrum + i*mtab->size, - prev_buf + 2*i*mtab->size, + tctx->spectrum + i * mtab->size, + prev_buf + 2 * i * mtab->size, i); - } if (!out) return; @@ -684,12 +687,14 @@ static void imdct_output(TwinContext *tctx, enum FrameType ftype, int wtype, size2 = tctx->last_block_pos[0]; size1 = mtab->size - size2; - memcpy(&out[0][0 ], prev_buf, size1 * sizeof(out[0][0])); + memcpy(&out[0][0], prev_buf, size1 * sizeof(out[0][0])); memcpy(&out[0][size1], tctx->curr_frame, size2 * sizeof(out[0][0])); if (tctx->avctx->channels == 2) { - memcpy(&out[1][0], &prev_buf[2*mtab->size], size1 * sizeof(out[1][0])); - memcpy(&out[1][size1], &tctx->curr_frame[2*mtab->size], size2 * sizeof(out[1][0])); + memcpy(&out[1][0], &prev_buf[2 * mtab->size], + size1 * sizeof(out[1][0])); + memcpy(&out[1][size1], &tctx->curr_frame[2 * mtab->size], + size2 * sizeof(out[1][0])); tctx->fdsp.butterflies_float(out[0], out[1], mtab->size); } } @@ -698,37 +703,37 @@ static void dec_bark_env(TwinContext *tctx, const uint8_t *in, int use_hist, int ch, float *out, float gain, enum FrameType ftype) { const ModeTab *mtab = tctx->mtab; - int i,j; - float *hist = tctx->bark_hist[ftype][ch]; - float val = ((const float []) {0.4, 0.35, 0.28})[ftype]; - int bark_n_coef = mtab->fmode[ftype].bark_n_coef; - int fw_cb_len = mtab->fmode[ftype].bark_env_size / bark_n_coef; - int idx = 0; + int i, j; + float *hist = tctx->bark_hist[ftype][ch]; + float val = ((const float []) { 0.4, 0.35, 0.28 })[ftype]; + int bark_n_coef = mtab->fmode[ftype].bark_n_coef; + int fw_cb_len = mtab->fmode[ftype].bark_env_size / bark_n_coef; + int idx = 0; for (i = 0; i < fw_cb_len; i++) for (j = 0; j < bark_n_coef; j++, idx++) { - float tmp2 = - mtab->fmode[ftype].bark_cb[fw_cb_len*in[j] + i] * (1./4096); - float st = use_hist ? - (1. - val) * tmp2 + val*hist[idx] + 1. : tmp2 + 1.; + float tmp2 = mtab->fmode[ftype].bark_cb[fw_cb_len * in[j] + i] * + (1. / 4096); + float st = use_hist ? (1. - val) * tmp2 + val * hist[idx] + 1. + : tmp2 + 1.; hist[idx] = tmp2; - if (st < -1.) st = 1.; + if (st < -1.) + st = 1.; memset_float(out, st * gain, mtab->fmode[ftype].bark_tab[idx]); out += mtab->fmode[ftype].bark_tab[idx]; } - } static void read_and_decode_spectrum(TwinContext *tctx, GetBitContext *gb, float *out, enum FrameType ftype) { const ModeTab *mtab = tctx->mtab; - int channels = tctx->avctx->channels; - int sub = mtab->fmode[ftype].sub; - int block_size = mtab->size / sub; - float gain[CHANNELS_MAX*SUBBLOCKS_MAX]; + int channels = tctx->avctx->channels; + int sub = mtab->fmode[ftype].sub; + int block_size = mtab->size / sub; + float gain[CHANNELS_MAX * SUBBLOCKS_MAX]; float ppc_shape[PPC_SHAPE_LEN_MAX * CHANNELS_MAX * 4]; uint8_t bark1[CHANNELS_MAX][SUBBLOCKS_MAX][BARK_N_COEF_MAX]; uint8_t bark_use_hist[CHANNELS_MAX][SUBBLOCKS_MAX]; @@ -757,17 +762,17 @@ static void read_and_decode_spectrum(TwinContext *tctx, GetBitContext *gb, for (i = 0; i < channels; i++) { lpc_hist_idx[i] = get_bits(gb, tctx->mtab->lsp_bit0); - lpc_idx1 [i] = get_bits(gb, tctx->mtab->lsp_bit1); + lpc_idx1[i] = get_bits(gb, tctx->mtab->lsp_bit1); for (j = 0; j < tctx->mtab->lsp_split; j++) lpc_idx2[i][j] = get_bits(gb, tctx->mtab->lsp_bit2); } if (ftype == FT_LONG) { - int cb_len_p = (tctx->n_div[3] + mtab->ppc_shape_len*channels - 1)/ - tctx->n_div[3]; + int cb_len_p = (tctx->n_div[3] + mtab->ppc_shape_len * channels - 1) / + tctx->n_div[3]; dequant(tctx, gb, ppc_shape, FT_PPC, mtab->ppc_shape_cb, - mtab->ppc_shape_cb + cb_len_p*PPC_SHAPE_CB_SIZE, cb_len_p); + mtab->ppc_shape_cb + cb_len_p * PPC_SHAPE_CB_SIZE, cb_len_p); } for (i = 0; i < channels; i++) { @@ -776,21 +781,22 @@ static void read_and_decode_spectrum(TwinContext *tctx, GetBitContext *gb, for (j = 0; j < sub; j++) { dec_bark_env(tctx, bark1[i][j], bark_use_hist[i][j], i, - tctx->tmp_buf, gain[sub*i+j], ftype); + tctx->tmp_buf, gain[sub * i + j], ftype); - tctx->fdsp.vector_fmul(chunk + block_size*j, chunk + block_size*j, + tctx->fdsp.vector_fmul(chunk + block_size * j, + chunk + block_size * j, tctx->tmp_buf, block_size); - } if (ftype == FT_LONG) { float pgain_step = 25000. / ((1 << mtab->pgain_bit) - 1); - int p_coef = get_bits(gb, tctx->mtab->ppc_period_bit); - int g_coef = get_bits(gb, tctx->mtab->pgain_bit); - float v = 1./8192* - mulawinv(pgain_step*g_coef+ pgain_step/2, 25000., PGAIN_MU); + int p_coef = get_bits(gb, tctx->mtab->ppc_period_bit); + int g_coef = get_bits(gb, tctx->mtab->pgain_bit); + float v = 1. / 8192 * + mulawinv(pgain_step * g_coef + pgain_step / 2, + 25000., PGAIN_MU); - decode_ppc(tctx, p_coef, ppc_shape + i*mtab->ppc_shape_len, v, + decode_ppc(tctx, p_coef, ppc_shape + i * mtab->ppc_shape_len, v, chunk); } @@ -806,16 +812,16 @@ static void read_and_decode_spectrum(TwinContext *tctx, GetBitContext *gb, } } -static int twin_decode_frame(AVCodecContext * avctx, void *data, +static int twin_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt) { AVFrame *frame = data; const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - TwinContext *tctx = avctx->priv_data; + int buf_size = avpkt->size; + TwinContext *tctx = avctx->priv_data; GetBitContext gb; const ModeTab *mtab = tctx->mtab; - float **out = NULL; + float **out = NULL; enum FrameType ftype; int window_type, ret; static const enum FrameType wtype_to_ftype_table[] = { @@ -823,7 +829,7 @@ static int twin_decode_frame(AVCodecContext * avctx, void *data, FT_MEDIUM, FT_LONG, FT_LONG, FT_MEDIUM, FT_MEDIUM }; - if (buf_size*8 < avctx->bit_rate*mtab->size/avctx->sample_rate + 8) { + if (buf_size * 8 < avctx->bit_rate * mtab->size / avctx->sample_rate + 8) { av_log(avctx, AV_LOG_ERROR, "Frame too small (%d bytes). Truncated file?\n", buf_size); return AVERROR(EINVAL); @@ -854,7 +860,7 @@ static int twin_decode_frame(AVCodecContext * avctx, void *data, imdct_output(tctx, ftype, window_type, out); - FFSWAP(float*, tctx->curr_frame, tctx->prev_frame); + FFSWAP(float *, tctx->curr_frame, tctx->prev_frame); if (tctx->discarded_packets < 2) { tctx->discarded_packets++; @@ -874,15 +880,15 @@ static av_cold int init_mdct_win(TwinContext *tctx) { int i, j, ret; const ModeTab *mtab = tctx->mtab; - int size_s = mtab->size / mtab->fmode[FT_SHORT].sub; - int size_m = mtab->size / mtab->fmode[FT_MEDIUM].sub; - int channels = tctx->avctx->channels; - float norm = channels == 1 ? 2. : 1.; + int size_s = mtab->size / mtab->fmode[FT_SHORT].sub; + int size_m = mtab->size / mtab->fmode[FT_MEDIUM].sub; + int channels = tctx->avctx->channels; + float norm = channels == 1 ? 2. : 1.; for (i = 0; i < 3; i++) { - int bsize = tctx->mtab->size/tctx->mtab->fmode[i].sub; + int bsize = tctx->mtab->size / tctx->mtab->fmode[i].sub; if ((ret = ff_mdct_init(&tctx->mdct_ctx[i], av_log2(bsize) + 1, 1, - -sqrt(norm/bsize) / (1<<15)))) + -sqrt(norm / bsize) / (1 << 15)))) return ret; } @@ -900,23 +906,23 @@ static av_cold int init_mdct_win(TwinContext *tctx) alloc_fail); for (i = 0; i < 3; i++) { - int m = 4*mtab->size/mtab->fmode[i].sub; - double freq = 2*M_PI/m; + int m = 4 * mtab->size / mtab->fmode[i].sub; + double freq = 2 * M_PI / m; FF_ALLOC_OR_GOTO(tctx->avctx, tctx->cos_tabs[i], (m / 4) * sizeof(*tctx->cos_tabs[i]), alloc_fail); - for (j = 0; j <= m/8; j++) - tctx->cos_tabs[i][j] = cos((2*j + 1)*freq); - for (j = 1; j < m/8; j++) - tctx->cos_tabs[i][m/4-j] = tctx->cos_tabs[i][j]; + for (j = 0; j <= m / 8; j++) + tctx->cos_tabs[i][j] = cos((2 * j + 1) * freq); + for (j = 1; j < m / 8; j++) + tctx->cos_tabs[i][m / 4 - j] = tctx->cos_tabs[i][j]; } - ff_init_ff_sine_windows(av_log2(size_m)); - ff_init_ff_sine_windows(av_log2(size_s/2)); + ff_init_ff_sine_windows(av_log2(size_s / 2)); ff_init_ff_sine_windows(av_log2(mtab->size)); return 0; + alloc_fail: return AVERROR(ENOMEM); } @@ -931,25 +937,24 @@ static void permutate_in_line(int16_t *tab, int num_vect, int num_blocks, int block_size, const uint8_t line_len[2], int length_div, enum FrameType ftype) - { - int i,j; + int i, j; for (i = 0; i < line_len[0]; i++) { int shift; - if (num_blocks == 1 || + if (num_blocks == 1 || (ftype == FT_LONG && num_vect % num_blocks) || - (ftype != FT_LONG && num_vect & 1 ) || + (ftype != FT_LONG && num_vect & 1) || i == line_len[1]) { shift = 0; } else if (ftype == FT_LONG) { shift = i; } else - shift = i*i; + shift = i * i; - for (j = 0; j < num_vect && (j+num_vect*i < block_size*num_blocks); j++) - tab[i*num_vect+j] = i*num_vect + (j + shift) % num_vect; + for (j = 0; j < num_vect && (j + num_vect * i < block_size * num_blocks); j++) + tab[i * num_vect + j] = i * num_vect + (j + shift) % num_vect; } } @@ -971,31 +976,32 @@ static void permutate_in_line(int16_t *tab, int num_vect, int num_blocks, static void transpose_perm(int16_t *out, int16_t *in, int num_vect, const uint8_t line_len[2], int length_div) { - int i,j; - int cont= 0; + int i, j; + int cont = 0; + for (i = 0; i < num_vect; i++) for (j = 0; j < line_len[i >= length_div]; j++) - out[cont++] = in[j*num_vect + i]; + out[cont++] = in[j * num_vect + i]; } static void linear_perm(int16_t *out, int16_t *in, int n_blocks, int size) { - int block_size = size/n_blocks; + int block_size = size / n_blocks; int i; for (i = 0; i < size; i++) out[i] = block_size * (in[i] % n_blocks) + in[i] / n_blocks; } -static av_cold void construct_perm_table(TwinContext *tctx,enum FrameType ftype) +static av_cold void construct_perm_table(TwinContext *tctx, + enum FrameType ftype) { - int block_size; + int block_size, size; const ModeTab *mtab = tctx->mtab; - int size; - int16_t *tmp_perm = (int16_t *) tctx->tmp_buf; + int16_t *tmp_perm = (int16_t *)tctx->tmp_buf; if (ftype == FT_PPC) { - size = tctx->avctx->channels; + size = tctx->avctx->channels; block_size = mtab->ppc_shape_len; } else { size = tctx->avctx->channels * mtab->fmode[ftype].sub; @@ -1010,71 +1016,71 @@ static av_cold void construct_perm_table(TwinContext *tctx,enum FrameType ftype) tctx->length[ftype], tctx->length_change[ftype]); linear_perm(tctx->permut[ftype], tctx->permut[ftype], size, - size*block_size); + size * block_size); } static av_cold void init_bitstream_params(TwinContext *tctx) { const ModeTab *mtab = tctx->mtab; - int n_ch = tctx->avctx->channels; - int total_fr_bits = tctx->avctx->bit_rate*mtab->size/ - tctx->avctx->sample_rate; + int n_ch = tctx->avctx->channels; + int total_fr_bits = tctx->avctx->bit_rate * mtab->size / + tctx->avctx->sample_rate; - int lsp_bits_per_block = n_ch*(mtab->lsp_bit0 + mtab->lsp_bit1 + - mtab->lsp_split*mtab->lsp_bit2); + int lsp_bits_per_block = n_ch * (mtab->lsp_bit0 + mtab->lsp_bit1 + + mtab->lsp_split * mtab->lsp_bit2); - int ppc_bits = n_ch*(mtab->pgain_bit + mtab->ppc_shape_bit + - mtab->ppc_period_bit); + int ppc_bits = n_ch * (mtab->pgain_bit + mtab->ppc_shape_bit + + mtab->ppc_period_bit); - int bsize_no_main_cb[3]; - int bse_bits[3]; - int i; + int bsize_no_main_cb[3], bse_bits[3], i; enum FrameType frametype; for (i = 0; i < 3; i++) // +1 for history usage switch bse_bits[i] = n_ch * - (mtab->fmode[i].bark_n_coef * mtab->fmode[i].bark_n_bit + 1); + (mtab->fmode[i].bark_n_coef * + mtab->fmode[i].bark_n_bit + 1); bsize_no_main_cb[2] = bse_bits[2] + lsp_bits_per_block + ppc_bits + - WINDOW_TYPE_BITS + n_ch*GAIN_BITS; + WINDOW_TYPE_BITS + n_ch * GAIN_BITS; for (i = 0; i < 2; i++) bsize_no_main_cb[i] = - lsp_bits_per_block + n_ch*GAIN_BITS + WINDOW_TYPE_BITS + - mtab->fmode[i].sub*(bse_bits[i] + n_ch*SUB_GAIN_BITS); + lsp_bits_per_block + n_ch * GAIN_BITS + WINDOW_TYPE_BITS + + mtab->fmode[i].sub * (bse_bits[i] + n_ch * SUB_GAIN_BITS); // The remaining bits are all used for the main spectrum coefficients for (i = 0; i < 4; i++) { - int bit_size; - int vect_size; + int bit_size, vect_size; int rounded_up, rounded_down, num_rounded_down, num_rounded_up; if (i == 3) { bit_size = n_ch * mtab->ppc_shape_bit; vect_size = n_ch * mtab->ppc_shape_len; } else { - bit_size = total_fr_bits - bsize_no_main_cb[i]; + bit_size = total_fr_bits - bsize_no_main_cb[i]; vect_size = n_ch * mtab->size; } tctx->n_div[i] = (bit_size + 13) / 14; - rounded_up = (bit_size + tctx->n_div[i] - 1)/tctx->n_div[i]; - rounded_down = (bit_size )/tctx->n_div[i]; - num_rounded_down = rounded_up * tctx->n_div[i] - bit_size; - num_rounded_up = tctx->n_div[i] - num_rounded_down; - tctx->bits_main_spec[0][i][0] = (rounded_up + 1)/2; - tctx->bits_main_spec[1][i][0] = (rounded_up )/2; - tctx->bits_main_spec[0][i][1] = (rounded_down + 1)/2; - tctx->bits_main_spec[1][i][1] = (rounded_down )/2; + rounded_up = (bit_size + tctx->n_div[i] - 1) / + tctx->n_div[i]; + rounded_down = (bit_size) / tctx->n_div[i]; + num_rounded_down = rounded_up * tctx->n_div[i] - bit_size; + num_rounded_up = tctx->n_div[i] - num_rounded_down; + tctx->bits_main_spec[0][i][0] = (rounded_up + 1) / 2; + tctx->bits_main_spec[1][i][0] = rounded_up / 2; + tctx->bits_main_spec[0][i][1] = (rounded_down + 1) / 2; + tctx->bits_main_spec[1][i][1] = rounded_down / 2; tctx->bits_main_spec_change[i] = num_rounded_up; - rounded_up = (vect_size + tctx->n_div[i] - 1)/tctx->n_div[i]; - rounded_down = (vect_size )/tctx->n_div[i]; - num_rounded_down = rounded_up * tctx->n_div[i] - vect_size; - num_rounded_up = tctx->n_div[i] - num_rounded_down; - tctx->length[i][0] = rounded_up; - tctx->length[i][1] = rounded_down; + rounded_up = (vect_size + tctx->n_div[i] - 1) / + tctx->n_div[i]; + rounded_down = (vect_size) / tctx->n_div[i]; + num_rounded_down = rounded_up * tctx->n_div[i] - vect_size; + num_rounded_up = tctx->n_div[i] - num_rounded_down; + tctx->length[i][0] = rounded_up; + tctx->length[i][1] = rounded_down; tctx->length_change[i] = num_rounded_up; } @@ -1092,7 +1098,6 @@ static av_cold int twin_decode_close(AVCodecContext *avctx) av_free(tctx->cos_tabs[i]); } - av_free(tctx->curr_frame); av_free(tctx->spectrum); av_free(tctx->prev_frame); @@ -1103,9 +1108,8 @@ static av_cold int twin_decode_close(AVCodecContext *avctx) static av_cold int twin_decode_init(AVCodecContext *avctx) { - int ret; + int ret, isampf, ibps; TwinContext *tctx = avctx->priv_data; - int isampf, ibps; tctx->avctx = avctx; avctx->sample_fmt = AV_SAMPLE_FMT_FLTP; @@ -1114,7 +1118,7 @@ static av_cold int twin_decode_init(AVCodecContext *avctx) av_log(avctx, AV_LOG_ERROR, "Missing or incomplete extradata\n"); return AVERROR_INVALIDDATA; } - avctx->channels = AV_RB32(avctx->extradata ) + 1; + avctx->channels = AV_RB32(avctx->extradata) + 1; avctx->bit_rate = AV_RB32(avctx->extradata + 4) * 1000; isampf = AV_RB32(avctx->extradata + 8); @@ -1123,10 +1127,18 @@ static av_cold int twin_decode_init(AVCodecContext *avctx) return AVERROR_INVALIDDATA; } switch (isampf) { - case 44: avctx->sample_rate = 44100; break; - case 22: avctx->sample_rate = 22050; break; - case 11: avctx->sample_rate = 11025; break; - default: avctx->sample_rate = isampf * 1000; break; + case 44: + avctx->sample_rate = 44100; + break; + case 22: + avctx->sample_rate = 22050; + break; + case 11: + avctx->sample_rate = 11025; + break; + default: + avctx->sample_rate = isampf * 1000; + break; } if (avctx->channels <= 0 || avctx->channels > CHANNELS_MAX) { @@ -1134,23 +1146,43 @@ static av_cold int twin_decode_init(AVCodecContext *avctx) avctx->channels); return -1; } - avctx->channel_layout = avctx->channels == 1 ? AV_CH_LAYOUT_MONO : - AV_CH_LAYOUT_STEREO; + avctx->channel_layout = avctx->channels == 1 ? AV_CH_LAYOUT_MONO + : AV_CH_LAYOUT_STEREO; ibps = avctx->bit_rate / (1000 * avctx->channels); - switch ((isampf << 8) + ibps) { - case (8 <<8) + 8: tctx->mtab = &mode_08_08; break; - case (11<<8) + 8: tctx->mtab = &mode_11_08; break; - case (11<<8) + 10: tctx->mtab = &mode_11_10; break; - case (16<<8) + 16: tctx->mtab = &mode_16_16; break; - case (22<<8) + 20: tctx->mtab = &mode_22_20; break; - case (22<<8) + 24: tctx->mtab = &mode_22_24; break; - case (22<<8) + 32: tctx->mtab = &mode_22_32; break; - case (44<<8) + 40: tctx->mtab = &mode_44_40; break; - case (44<<8) + 48: tctx->mtab = &mode_44_48; break; + switch ((isampf << 8) + ibps) { + case (8 << 8) + 8: + tctx->mtab = &mode_08_08; + break; + case (11 << 8) + 8: + tctx->mtab = &mode_11_08; + break; + case (11 << 8) + 10: + tctx->mtab = &mode_11_10; + break; + case (16 << 8) + 16: + tctx->mtab = &mode_16_16; + break; + case (22 << 8) + 20: + tctx->mtab = &mode_22_20; + break; + case (22 << 8) + 24: + tctx->mtab = &mode_22_24; + break; + case (22 << 8) + 32: + tctx->mtab = &mode_22_32; + break; + case (44 << 8) + 40: + tctx->mtab = &mode_44_40; + break; + case (44 << 8) + 48: + tctx->mtab = &mode_44_48; + break; default: - av_log(avctx, AV_LOG_ERROR, "This version does not support %d kHz - %d kbit/s/ch mode.\n", isampf, isampf); + av_log(avctx, AV_LOG_ERROR, + "This version does not support %d kHz - %d kbit/s/ch mode.\n", + isampf, isampf); return -1; } -- cgit v1.2.3