X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fqcelpdec.c;h=ac5c289c3dca77cefc8d566276fbe8e83d6c2e6c;hb=feb997577b66367a0c4269100888640699ee890d;hp=47b1f68fe57dcbd662b9e15c510cc13268af85f2;hpb=e462257242fc037c99206457d1316e1ff9e5306f;p=ffmpeg diff --git a/libavcodec/qcelpdec.c b/libavcodec/qcelpdec.c index 47b1f68fe57..ac5c289c3dc 100644 --- a/libavcodec/qcelpdec.c +++ b/libavcodec/qcelpdec.c @@ -44,8 +44,7 @@ #undef NDEBUG #include -typedef enum -{ +typedef enum { I_F_Q = -1, /**< insufficient frame quality */ SILENCE, RATE_OCTAVE, @@ -54,8 +53,7 @@ typedef enum RATE_FULL } qcelp_packet_rate; -typedef struct -{ +typedef struct { AVFrame avframe; GetBitContext gb; qcelp_packet_rate bitrate; @@ -95,8 +93,8 @@ static av_cold int qcelp_decode_init(AVCodecContext *avctx) avctx->sample_fmt = AV_SAMPLE_FMT_FLT; - for(i=0; i<10; i++) - q->prev_lspf[i] = (i+1)/11.; + for (i = 0; i < 10; i++) + q->prev_lspf[i] = (i + 1) / 11.; avcodec_get_frame_defaults(&q->avframe); avctx->coded_frame = &q->avframe; @@ -122,69 +120,69 @@ static int decode_lspf(QCELPContext *q, float *lspf) const float *predictors; if (q->bitrate == RATE_OCTAVE || q->bitrate == I_F_Q) { - predictors = (q->prev_bitrate != RATE_OCTAVE && - q->prev_bitrate != I_F_Q ? - q->prev_lspf : q->predictor_lspf); + predictors = q->prev_bitrate != RATE_OCTAVE && + q->prev_bitrate != I_F_Q ? q->prev_lspf + : q->predictor_lspf; if (q->bitrate == RATE_OCTAVE) { q->octave_count++; - for (i=0; i<10; i++) { + for (i = 0; i < 10; i++) { q->predictor_lspf[i] = lspf[i] = (q->frame.lspv[i] ? QCELP_LSP_SPREAD_FACTOR - : -QCELP_LSP_SPREAD_FACTOR) - + predictors[i] * QCELP_LSP_OCTAVE_PREDICTOR - + (i + 1) * ((1 - QCELP_LSP_OCTAVE_PREDICTOR)/11); + : -QCELP_LSP_SPREAD_FACTOR) + + predictors[i] * QCELP_LSP_OCTAVE_PREDICTOR + + (i + 1) * ((1 - QCELP_LSP_OCTAVE_PREDICTOR) / 11); } - smooth = (q->octave_count < 10 ? .875 : 0.1); + smooth = q->octave_count < 10 ? .875 : 0.1; } else { erasure_coeff = QCELP_LSP_OCTAVE_PREDICTOR; assert(q->bitrate == I_F_Q); - if(q->erasure_count > 1) - erasure_coeff *= (q->erasure_count < 4 ? 0.9 : 0.7); + if (q->erasure_count > 1) + erasure_coeff *= q->erasure_count < 4 ? 0.9 : 0.7; - for(i = 0; i < 10; i++) { + for (i = 0; i < 10; i++) { q->predictor_lspf[i] = - lspf[i] = (i + 1) * ( 1 - erasure_coeff)/11 - + erasure_coeff * predictors[i]; + lspf[i] = (i + 1) * (1 - erasure_coeff) / 11 + + erasure_coeff * predictors[i]; } smooth = 0.125; } // Check the stability of the LSP frequencies. lspf[0] = FFMAX(lspf[0], QCELP_LSP_SPREAD_FACTOR); - for(i=1; i<10; i++) - lspf[i] = FFMAX(lspf[i], (lspf[i-1] + QCELP_LSP_SPREAD_FACTOR)); + for (i = 1; i < 10; i++) + lspf[i] = FFMAX(lspf[i], lspf[i - 1] + QCELP_LSP_SPREAD_FACTOR); - lspf[9] = FFMIN(lspf[9], (1.0 - QCELP_LSP_SPREAD_FACTOR)); - for(i=9; i>0; i--) - lspf[i-1] = FFMIN(lspf[i-1], (lspf[i] - QCELP_LSP_SPREAD_FACTOR)); + lspf[9] = FFMIN(lspf[9], 1.0 - QCELP_LSP_SPREAD_FACTOR); + for (i = 9; i > 0; i--) + lspf[i - 1] = FFMIN(lspf[i - 1], lspf[i] - QCELP_LSP_SPREAD_FACTOR); // Low-pass filter the LSP frequencies. - ff_weighted_vector_sumf(lspf, lspf, q->prev_lspf, smooth, 1.0-smooth, 10); + ff_weighted_vector_sumf(lspf, lspf, q->prev_lspf, smooth, 1.0 - smooth, 10); } else { q->octave_count = 0; tmp_lspf = 0.; for (i = 0; i < 5; i++) { - lspf[2*i+0] = tmp_lspf += qcelp_lspvq[i][q->frame.lspv[i]][0] * 0.0001; - lspf[2*i+1] = tmp_lspf += qcelp_lspvq[i][q->frame.lspv[i]][1] * 0.0001; + lspf[2 * i + 0] = tmp_lspf += qcelp_lspvq[i][q->frame.lspv[i]][0] * 0.0001; + lspf[2 * i + 1] = tmp_lspf += qcelp_lspvq[i][q->frame.lspv[i]][1] * 0.0001; } // Check for badly received packets. if (q->bitrate == RATE_QUARTER) { - if(lspf[9] <= .70 || lspf[9] >= .97) + if (lspf[9] <= .70 || lspf[9] >= .97) return -1; - for(i=3; i<10; i++) - if(fabs(lspf[i] - lspf[i-2]) < .08) + for (i = 3; i < 10; i++) + if (fabs(lspf[i] - lspf[i - 2]) < .08) return -1; } else { - if(lspf[9] <= .66 || lspf[9] >= .985) + if (lspf[9] <= .66 || lspf[9] >= .985) return -1; - for(i=4; i<10; i++) - if (fabs(lspf[i] - lspf[i-4]) < .0931) + for (i = 4; i < 10; i++) + if (fabs(lspf[i] - lspf[i - 4]) < .0931) return -1; } } @@ -199,72 +197,72 @@ static int decode_lspf(QCELPContext *q, float *lspf) * * TIA/EIA/IS-733 2.4.6.2 */ -static void decode_gain_and_index(QCELPContext *q, - float *gain) { - int i, subframes_count, g1[16]; +static void decode_gain_and_index(QCELPContext *q, float *gain) +{ + int i, subframes_count, g1[16]; float slope; if (q->bitrate >= RATE_QUARTER) { switch (q->bitrate) { - case RATE_FULL: subframes_count = 16; break; - case RATE_HALF: subframes_count = 4; break; - default: subframes_count = 5; + case RATE_FULL: subframes_count = 16; break; + case RATE_HALF: subframes_count = 4; break; + default: subframes_count = 5; } - for(i = 0; i < subframes_count; i++) { + for (i = 0; i < subframes_count; i++) { g1[i] = 4 * q->frame.cbgain[i]; - if (q->bitrate == RATE_FULL && !((i+1) & 3)) { - g1[i] += av_clip((g1[i-1] + g1[i-2] + g1[i-3]) / 3 - 6, 0, 32); + if (q->bitrate == RATE_FULL && !((i + 1) & 3)) { + g1[i] += av_clip((g1[i - 1] + g1[i - 2] + g1[i - 3]) / 3 - 6, 0, 32); } gain[i] = qcelp_g12ga[g1[i]]; if (q->frame.cbsign[i]) { gain[i] = -gain[i]; - q->frame.cindex[i] = (q->frame.cindex[i]-89) & 127; + q->frame.cindex[i] = (q->frame.cindex[i] - 89) & 127; } } - q->prev_g1[0] = g1[i-2]; - q->prev_g1[1] = g1[i-1]; - q->last_codebook_gain = qcelp_g12ga[g1[i-1]]; + q->prev_g1[0] = g1[i - 2]; + q->prev_g1[1] = g1[i - 1]; + q->last_codebook_gain = qcelp_g12ga[g1[i - 1]]; if (q->bitrate == RATE_QUARTER) { // Provide smoothing of the unvoiced excitation energy. - gain[7] = gain[4]; - gain[6] = 0.4*gain[3] + 0.6*gain[4]; - gain[5] = gain[3]; - gain[4] = 0.8*gain[2] + 0.2*gain[3]; - gain[3] = 0.2*gain[1] + 0.8*gain[2]; - gain[2] = gain[1]; - gain[1] = 0.6*gain[0] + 0.4*gain[1]; + gain[7] = gain[4]; + gain[6] = 0.4 * gain[3] + 0.6 * gain[4]; + gain[5] = gain[3]; + gain[4] = 0.8 * gain[2] + 0.2 * gain[3]; + gain[3] = 0.2 * gain[1] + 0.8 * gain[2]; + gain[2] = gain[1]; + gain[1] = 0.6 * gain[0] + 0.4 * gain[1]; } } else if (q->bitrate != SILENCE) { if (q->bitrate == RATE_OCTAVE) { - g1[0] = 2 * q->frame.cbgain[0] - + av_clip((q->prev_g1[0] + q->prev_g1[1]) / 2 - 5, 0, 54); + g1[0] = 2 * q->frame.cbgain[0] + + av_clip((q->prev_g1[0] + q->prev_g1[1]) / 2 - 5, 0, 54); subframes_count = 8; } else { assert(q->bitrate == I_F_Q); g1[0] = q->prev_g1[1]; switch (q->erasure_count) { - case 1 : break; - case 2 : g1[0] -= 1; break; - case 3 : g1[0] -= 2; break; - default: g1[0] -= 6; + case 1 : break; + case 2 : g1[0] -= 1; break; + case 3 : g1[0] -= 2; break; + default: g1[0] -= 6; } - if(g1[0] < 0) + if (g1[0] < 0) g1[0] = 0; subframes_count = 4; } // This interpolation is done to produce smoother background noise. - slope = 0.5*(qcelp_g12ga[g1[0]] - q->last_codebook_gain) / subframes_count; - for(i=1; i<=subframes_count; i++) - gain[i-1] = q->last_codebook_gain + slope * i; + slope = 0.5 * (qcelp_g12ga[g1[0]] - q->last_codebook_gain) / subframes_count; + for (i = 1; i <= subframes_count; i++) + gain[i - 1] = q->last_codebook_gain + slope * i; - q->last_codebook_gain = gain[i-2]; - q->prev_g1[0] = q->prev_g1[1]; - q->prev_g1[1] = g1[0]; + q->last_codebook_gain = gain[i - 2]; + q->prev_g1[0] = q->prev_g1[1]; + q->prev_g1[1] = g1[0]; } } @@ -279,13 +277,13 @@ static void decode_gain_and_index(QCELPContext *q, */ static int codebook_sanity_check_for_rate_quarter(const uint8_t *cbgain) { - int i, diff, prev_diff=0; + int i, diff, prev_diff = 0; - for(i=1; i<5; i++) { + for (i = 1; i < 5; i++) { diff = cbgain[i] - cbgain[i-1]; - if(FFABS(diff) > 10) + if (FFABS(diff) > 10) return -1; - else if(FFABS(diff - prev_diff) > 12) + else if (FFABS(diff - prev_diff) > 12) return -1; prev_diff = diff; } @@ -316,73 +314,74 @@ static int codebook_sanity_check_for_rate_quarter(const uint8_t *cbgain) static void compute_svector(QCELPContext *q, const float *gain, float *cdn_vector) { - int i, j, k; + int i, j, k; uint16_t cbseed, cindex; - float *rnd, tmp_gain, fir_filter_value; + float *rnd, tmp_gain, fir_filter_value; switch (q->bitrate) { - case RATE_FULL: - for (i = 0; i < 16; i++) { - tmp_gain = gain[i] * QCELP_RATE_FULL_CODEBOOK_RATIO; - cindex = -q->frame.cindex[i]; - for(j=0; j<10; j++) - *cdn_vector++ = tmp_gain * qcelp_rate_full_codebook[cindex++ & 127]; - } + case RATE_FULL: + for (i = 0; i < 16; i++) { + tmp_gain = gain[i] * QCELP_RATE_FULL_CODEBOOK_RATIO; + cindex = -q->frame.cindex[i]; + for (j = 0; j < 10; j++) + *cdn_vector++ = tmp_gain * qcelp_rate_full_codebook[cindex++ & 127]; + } break; - case RATE_HALF: - for (i = 0; i < 4; i++) { - tmp_gain = gain[i] * QCELP_RATE_HALF_CODEBOOK_RATIO; - cindex = -q->frame.cindex[i]; - for (j = 0; j < 40; j++) + case RATE_HALF: + for (i = 0; i < 4; i++) { + tmp_gain = gain[i] * QCELP_RATE_HALF_CODEBOOK_RATIO; + cindex = -q->frame.cindex[i]; + for (j = 0; j < 40; j++) *cdn_vector++ = tmp_gain * qcelp_rate_half_codebook[cindex++ & 127]; - } + } break; - case RATE_QUARTER: - cbseed = (0x0003 & q->frame.lspv[4])<<14 | - (0x003F & q->frame.lspv[3])<< 8 | - (0x0060 & q->frame.lspv[2])<< 1 | - (0x0007 & q->frame.lspv[1])<< 3 | - (0x0038 & q->frame.lspv[0])>> 3 ; - rnd = q->rnd_fir_filter_mem + 20; - for (i = 0; i < 8; i++) { - tmp_gain = gain[i] * (QCELP_SQRT1887 / 32768.0); - for (k = 0; k < 20; k++) { - cbseed = 521 * cbseed + 259; - *rnd = (int16_t)cbseed; + case RATE_QUARTER: + cbseed = (0x0003 & q->frame.lspv[4]) << 14 | + (0x003F & q->frame.lspv[3]) << 8 | + (0x0060 & q->frame.lspv[2]) << 1 | + (0x0007 & q->frame.lspv[1]) << 3 | + (0x0038 & q->frame.lspv[0]) >> 3; + rnd = q->rnd_fir_filter_mem + 20; + for (i = 0; i < 8; i++) { + tmp_gain = gain[i] * (QCELP_SQRT1887 / 32768.0); + for (k = 0; k < 20; k++) { + cbseed = 521 * cbseed + 259; + *rnd = (int16_t) cbseed; // FIR filter - fir_filter_value = 0.0; - for(j=0; j<10; j++) - fir_filter_value += qcelp_rnd_fir_coefs[j ] - * (rnd[-j ] + rnd[-20+j]); - - fir_filter_value += qcelp_rnd_fir_coefs[10] * rnd[-10]; - *cdn_vector++ = tmp_gain * fir_filter_value; - rnd++; - } + fir_filter_value = 0.0; + for (j = 0; j < 10; j++) + fir_filter_value += qcelp_rnd_fir_coefs[j] * + (rnd[-j] + rnd[-20+j]); + + fir_filter_value += qcelp_rnd_fir_coefs[10] * rnd[-10]; + *cdn_vector++ = tmp_gain * fir_filter_value; + rnd++; } - memcpy(q->rnd_fir_filter_mem, q->rnd_fir_filter_mem + 160, 20 * sizeof(float)); + } + memcpy(q->rnd_fir_filter_mem, q->rnd_fir_filter_mem + 160, + 20 * sizeof(float)); break; - case RATE_OCTAVE: - cbseed = q->first16bits; - for (i = 0; i < 8; i++) { - tmp_gain = gain[i] * (QCELP_SQRT1887 / 32768.0); - for (j = 0; j < 20; j++) { - cbseed = 521 * cbseed + 259; - *cdn_vector++ = tmp_gain * (int16_t)cbseed; - } + case RATE_OCTAVE: + cbseed = q->first16bits; + for (i = 0; i < 8; i++) { + tmp_gain = gain[i] * (QCELP_SQRT1887 / 32768.0); + for (j = 0; j < 20; j++) { + cbseed = 521 * cbseed + 259; + *cdn_vector++ = tmp_gain * (int16_t) cbseed; } + } break; - case I_F_Q: - cbseed = -44; // random codebook index - for (i = 0; i < 4; i++) { - tmp_gain = gain[i] * QCELP_RATE_FULL_CODEBOOK_RATIO; - for(j=0; j<40; j++) - *cdn_vector++ = tmp_gain * qcelp_rate_full_codebook[cbseed++ & 127]; - } + case I_F_Q: + cbseed = -44; // random codebook index + for (i = 0; i < 4; i++) { + tmp_gain = gain[i] * QCELP_RATE_FULL_CODEBOOK_RATIO; + for (j = 0; j < 40; j++) + *cdn_vector++ = tmp_gain * qcelp_rate_full_codebook[cbseed++ & 127]; + } break; - case SILENCE: - memset(cdn_vector, 0, 160 * sizeof(float)); + case SILENCE: + memset(cdn_vector, 0, 160 * sizeof(float)); break; } } @@ -396,8 +395,7 @@ static void compute_svector(QCELPContext *q, const float *gain, * * TIA/EIA/IS-733 2.4.8.3, 2.4.8.6 */ -static void apply_gain_ctrl(float *v_out, const float *v_ref, - const float *v_in) +static void apply_gain_ctrl(float *v_out, const float *v_ref, const float *v_in) { int i; @@ -429,8 +427,8 @@ static const float *do_pitchfilter(float memory[303], const float v_in[160], const float gain[4], const uint8_t *lag, const uint8_t pfrac[4]) { - int i, j; - float *v_lag, *v_out; + int i, j; + float *v_lag, *v_out; const float *v_len; v_out = memory + 143; // Output vector starts at memory[143]. @@ -440,9 +438,9 @@ static const float *do_pitchfilter(float memory[303], const float v_in[160], v_lag = memory + 143 + 40 * i - lag[i]; for (v_len = v_in + 40; v_in < v_len; v_in++) { if (pfrac[i]) { // If it is a fractional lag... - for(j=0, *v_out=0.; j<4; j++) - *v_out += qcelp_hammsinc_table[j] * (v_lag[j-4] + v_lag[3-j]); - }else + for (j = 0, *v_out = 0.; j < 4; j++) + *v_out += qcelp_hammsinc_table[j] * (v_lag[j - 4] + v_lag[3 - j]); + } else *v_out = *v_lag; *v_out = *v_in + gain[i] * *v_out; @@ -470,15 +468,13 @@ static const float *do_pitchfilter(float memory[303], const float v_in[160], */ static void apply_pitch_filters(QCELPContext *q, float *cdn_vector) { - int i; + int i; const float *v_synthesis_filtered, *v_pre_filtered; - if(q->bitrate >= RATE_HALF || - q->bitrate == SILENCE || - (q->bitrate == I_F_Q && (q->prev_bitrate >= RATE_HALF))) { - - if(q->bitrate >= RATE_HALF) { + if (q->bitrate >= RATE_HALF || q->bitrate == SILENCE || + (q->bitrate == I_F_Q && (q->prev_bitrate >= RATE_HALF))) { + if (q->bitrate >= RATE_HALF) { // Compute gain & lag for the whole frame. for (i = 0; i < 4; i++) { q->pitch_gain[i] = q->frame.plag[i] ? (q->frame.pgain[i] + 1) * 0.25 : 0.0; @@ -497,7 +493,7 @@ static void apply_pitch_filters(QCELPContext *q, float *cdn_vector) assert(q->bitrate == SILENCE); max_pitch_gain = 1.0; } - for(i=0; i<4; i++) + for (i = 0; i < 4; i++) q->pitch_gain[i] = FFMIN(q->pitch_gain[i], max_pitch_gain); memset(q->frame.pfrac, 0, sizeof(q->frame.pfrac)); @@ -509,18 +505,17 @@ static void apply_pitch_filters(QCELPContext *q, float *cdn_vector) q->pitch_lag, q->frame.pfrac); // pitch prefilter update - for(i=0; i<4; i++) + for (i = 0; i < 4; i++) q->pitch_gain[i] = 0.5 * FFMIN(q->pitch_gain[i], 1.0); - v_pre_filtered = do_pitchfilter(q->pitch_pre_filter_mem, - v_synthesis_filtered, - q->pitch_gain, q->pitch_lag, - q->frame.pfrac); + v_pre_filtered = do_pitchfilter(q->pitch_pre_filter_mem, + v_synthesis_filtered, + q->pitch_gain, q->pitch_lag, + q->frame.pfrac); apply_gain_ctrl(cdn_vector, v_synthesis_filtered, v_pre_filtered); } else { - memcpy(q->pitch_synthesis_filter_mem, cdn_vector + 17, - 143 * sizeof(float)); + memcpy(q->pitch_synthesis_filter_mem, cdn_vector + 17, 143 * sizeof(float)); memcpy(q->pitch_pre_filter_mem, cdn_vector + 17, 143 * sizeof(float)); memset(q->pitch_gain, 0, sizeof(q->pitch_gain)); memset(q->pitch_lag, 0, sizeof(q->pitch_lag)); @@ -543,15 +538,15 @@ static void lspf2lpc(const float *lspf, float *lpc) { double lsp[10]; double bandwidth_expansion_coeff = QCELP_BANDWIDTH_EXPANSION_COEFF; - int i; + int i; - for (i=0; i<10; i++) + for (i = 0; i < 10; i++) lsp[i] = cos(M_PI * lspf[i]); ff_acelp_lspd2lpc(lsp, lpc, 5); for (i = 0; i < 10; i++) { - lpc[i] *= bandwidth_expansion_coeff; + lpc[i] *= bandwidth_expansion_coeff; bandwidth_expansion_coeff *= QCELP_BANDWIDTH_EXPANSION_COEFF; } } @@ -573,9 +568,9 @@ static void interpolate_lpc(QCELPContext *q, const float *curr_lspf, float interpolated_lspf[10]; float weight; - if(q->bitrate >= RATE_QUARTER) + if (q->bitrate >= RATE_QUARTER) weight = 0.25 * (subframe_num + 1); - else if(q->bitrate == RATE_OCTAVE && !subframe_num) + else if (q->bitrate == RATE_OCTAVE && !subframe_num) weight = 0.625; else weight = 1.0; @@ -584,21 +579,21 @@ static void interpolate_lpc(QCELPContext *q, const float *curr_lspf, ff_weighted_vector_sumf(interpolated_lspf, curr_lspf, q->prev_lspf, weight, 1.0 - weight, 10); lspf2lpc(interpolated_lspf, lpc); - }else if(q->bitrate >= RATE_QUARTER || - (q->bitrate == I_F_Q && !subframe_num)) + } else if (q->bitrate >= RATE_QUARTER || + (q->bitrate == I_F_Q && !subframe_num)) lspf2lpc(curr_lspf, lpc); - else if(q->bitrate == SILENCE && !subframe_num) + else if (q->bitrate == SILENCE && !subframe_num) lspf2lpc(q->prev_lspf, lpc); } static qcelp_packet_rate buf_size2bitrate(const int buf_size) { switch (buf_size) { - case 35: return RATE_FULL; - case 17: return RATE_HALF; - case 8: return RATE_QUARTER; - case 4: return RATE_OCTAVE; - case 1: return SILENCE; + case 35: return RATE_FULL; + case 17: return RATE_HALF; + case 8: return RATE_QUARTER; + case 4: return RATE_OCTAVE; + case 1: return SILENCE; } return I_F_Q; @@ -616,8 +611,9 @@ static qcelp_packet_rate buf_size2bitrate(const int buf_size) * * TIA/EIA/IS-733 2.4.8.7.1 */ -static qcelp_packet_rate determine_bitrate(AVCodecContext *avctx, const int buf_size, - const uint8_t **buf) +static qcelp_packet_rate determine_bitrate(AVCodecContext *avctx, + const int buf_size, + const uint8_t **buf) { qcelp_packet_rate bitrate; @@ -639,7 +635,7 @@ static qcelp_packet_rate determine_bitrate(AVCodecContext *avctx, const int buf_ } else if ((bitrate = buf_size2bitrate(buf_size + 1)) >= 0) { av_log(avctx, AV_LOG_WARNING, "Bitrate byte is missing, guessing the bitrate from packet size.\n"); - }else + } else return I_F_Q; if (bitrate == SILENCE) { @@ -652,8 +648,8 @@ static qcelp_packet_rate determine_bitrate(AVCodecContext *avctx, const int buf_ static void warn_insufficient_frame_quality(AVCodecContext *avctx, const char *message) { - av_log(avctx, AV_LOG_WARNING, "Frame #%d, IFQ: %s\n", avctx->frame_number, - message); + av_log(avctx, AV_LOG_WARNING, "Frame #%d, IFQ: %s\n", + avctx->frame_number, message); } static void postfilter(QCELPContext *q, float *samples, float *lpc) @@ -675,23 +671,24 @@ static void postfilter(QCELPContext *q, float *samples, float *lpc) ff_celp_lp_zero_synthesis_filterf(zero_out, lpc_s, q->formant_mem + 10, 160, 10); - memcpy(pole_out, q->postfilter_synth_mem, sizeof(float) * 10); + memcpy(pole_out, q->postfilter_synth_mem, sizeof(float) * 10); ff_celp_lp_synthesis_filterf(pole_out + 10, lpc_p, zero_out, 160, 10); memcpy(q->postfilter_synth_mem, pole_out + 160, sizeof(float) * 10); ff_tilt_compensation(&q->postfilter_tilt_mem, 0.3, pole_out + 10, 160); ff_adaptive_gain_control(samples, pole_out + 10, - ff_dot_productf(q->formant_mem + 10, q->formant_mem + 10, 160), - 160, 0.9375, &q->postfilter_agc_mem); + ff_dot_productf(q->formant_mem + 10, + q->formant_mem + 10, 160), + 160, 0.9375, &q->postfilter_agc_mem); } static int qcelp_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt) { const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - QCELPContext *q = avctx->priv_data; + int buf_size = avpkt->size; + QCELPContext *q = avctx->priv_data; float *outbuffer; int i, ret; float quantized_lspf[10], lpc[10]; @@ -711,23 +708,23 @@ static int qcelp_decode_frame(AVCodecContext *avctx, void *data, goto erasure; } - if(q->bitrate == RATE_OCTAVE && - (q->first16bits = AV_RB16(buf)) == 0xFFFF) { + if (q->bitrate == RATE_OCTAVE && + (q->first16bits = AV_RB16(buf)) == 0xFFFF) { warn_insufficient_frame_quality(avctx, "Bitrate is 1/8 and first 16 bits are on."); goto erasure; } if (q->bitrate > SILENCE) { const QCELPBitmap *bitmaps = qcelp_unpacking_bitmaps_per_rate[q->bitrate]; - const QCELPBitmap *bitmaps_end = qcelp_unpacking_bitmaps_per_rate[q->bitrate] - + qcelp_unpacking_bitmaps_lengths[q->bitrate]; - uint8_t *unpacked_data = (uint8_t *)&q->frame; + const QCELPBitmap *bitmaps_end = qcelp_unpacking_bitmaps_per_rate[q->bitrate] + + qcelp_unpacking_bitmaps_lengths[q->bitrate]; + uint8_t *unpacked_data = (uint8_t *)&q->frame; - init_get_bits(&q->gb, buf, 8*buf_size); + init_get_bits(&q->gb, buf, 8 * buf_size); memset(&q->frame, 0, sizeof(QCELPFrame)); - for(; bitmaps < bitmaps_end; bitmaps++) + for (; bitmaps < bitmaps_end; bitmaps++) unpacked_data[bitmaps->index] |= get_bits(&q->gb, bitmaps->bitlen) << bitmaps->bitpos; // Check for erasures/blanks on rates 1, 1/4 and 1/8. @@ -735,8 +732,8 @@ static int qcelp_decode_frame(AVCodecContext *avctx, void *data, warn_insufficient_frame_quality(avctx, "Wrong data in reserved frame area."); goto erasure; } - if(q->bitrate == RATE_QUARTER && - codebook_sanity_check_for_rate_quarter(q->frame.cbgain)) { + if (q->bitrate == RATE_QUARTER && + codebook_sanity_check_for_rate_quarter(q->frame.cbgain)) { warn_insufficient_frame_quality(avctx, "Codebook gain sanity check failed."); goto erasure; } @@ -759,7 +756,6 @@ static int qcelp_decode_frame(AVCodecContext *avctx, void *data, goto erasure; } - apply_pitch_filters(q, outbuffer); if (q->bitrate == I_F_Q) { @@ -770,14 +766,13 @@ erasure: compute_svector(q, gain, outbuffer); decode_lspf(q, quantized_lspf); apply_pitch_filters(q, outbuffer); - }else + } else q->erasure_count = 0; formant_mem = q->formant_mem + 10; for (i = 0; i < 4; i++) { interpolate_lpc(q, quantized_lspf, lpc, i); - ff_celp_lp_synthesis_filterf(formant_mem, lpc, outbuffer + i * 40, 40, - 10); + ff_celp_lp_synthesis_filterf(formant_mem, lpc, outbuffer + i * 40, 40, 10); formant_mem += 40; } @@ -787,7 +782,7 @@ erasure: memcpy(q->formant_mem, q->formant_mem + 160, 10 * sizeof(float)); memcpy(q->prev_lspf, quantized_lspf, sizeof(q->prev_lspf)); - q->prev_bitrate = q->bitrate; + q->prev_bitrate = q->bitrate; *got_frame_ptr = 1; *(AVFrame *)data = q->avframe; @@ -795,14 +790,13 @@ erasure: return buf_size; } -AVCodec ff_qcelp_decoder = -{ - .name = "qcelp", - .type = AVMEDIA_TYPE_AUDIO, - .id = CODEC_ID_QCELP, - .init = qcelp_decode_init, - .decode = qcelp_decode_frame, - .capabilities = CODEC_CAP_DR1, +AVCodec ff_qcelp_decoder = { + .name = "qcelp", + .type = AVMEDIA_TYPE_AUDIO, + .id = CODEC_ID_QCELP, + .init = qcelp_decode_init, + .decode = qcelp_decode_frame, + .capabilities = CODEC_CAP_DR1, .priv_data_size = sizeof(QCELPContext), - .long_name = NULL_IF_CONFIG_SMALL("QCELP / PureVoice"), + .long_name = NULL_IF_CONFIG_SMALL("QCELP / PureVoice"), };