diff --git a/libavcodec/qcelpdec.c b/libavcodec/qcelpdec.c index a8a65fce06..9e7e13118b 100644 --- a/libavcodec/qcelpdec.c +++ b/libavcodec/qcelpdec.c @@ -117,18 +117,15 @@ static int decode_lspf(QCELPContext *q, float *lspf) float tmp_lspf, smooth, erasure_coeff; const float *predictors; - if(q->bitrate == RATE_OCTAVE || q->bitrate == I_F_Q) - { + 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); - if(q->bitrate == RATE_OCTAVE) - { + 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) @@ -136,8 +133,7 @@ static int decode_lspf(QCELPContext *q, float *lspf) + (i + 1) * ((1 - QCELP_LSP_OCTAVE_PREDICTOR)/11); } smooth = (q->octave_count < 10 ? .875 : 0.1); - }else - { + } else { erasure_coeff = QCELP_LSP_OCTAVE_PREDICTOR; assert(q->bitrate == I_F_Q); @@ -145,8 +141,7 @@ static int decode_lspf(QCELPContext *q, float *lspf) 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]; @@ -165,27 +160,23 @@ static int decode_lspf(QCELPContext *q, float *lspf) // Low-pass filter the LSP frequencies. ff_weighted_vector_sumf(lspf, lspf, q->prev_lspf, smooth, 1.0-smooth, 10); - }else - { + } else { q->octave_count = 0; tmp_lspf = 0.; - for(i=0; i<5 ; i++) - { + 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; } // Check for badly received packets. - if(q->bitrate == RATE_QUARTER) - { + if (q->bitrate == RATE_QUARTER) { if(lspf[9] <= .70 || lspf[9] >= .97) return -1; for(i=3; i<10; i++) if(fabs(lspf[i] - lspf[i-2]) < .08) return -1; - }else - { + } else { if(lspf[9] <= .66 || lspf[9] >= .985) return -1; for(i=4; i<10; i++) @@ -209,26 +200,21 @@ static void decode_gain_and_index(QCELPContext *q, int i, subframes_count, g1[16]; float slope; - if(q->bitrate >= RATE_QUARTER) - { - switch(q->bitrate) - { + 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; } - for(i=0; iframe.cbgain[i]; - if(q->bitrate == RATE_FULL && !((i+1) & 3)) - { + 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]) - { + if (q->frame.cbsign[i]) { gain[i] = -gain[i]; q->frame.cindex[i] = (q->frame.cindex[i]-89) & 127; } @@ -238,8 +224,7 @@ static void decode_gain_and_index(QCELPContext *q, q->prev_g1[1] = g1[i-1]; q->last_codebook_gain = qcelp_g12ga[g1[i-1]]; - if(q->bitrate == RATE_QUARTER) - { + 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]; @@ -249,20 +234,16 @@ static void decode_gain_and_index(QCELPContext *q, gain[2] = gain[1]; gain[1] = 0.6*gain[0] + 0.4*gain[1]; } - }else if (q->bitrate != SILENCE) - { - if(q->bitrate == RATE_OCTAVE) - { + } 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); subframes_count = 8; - }else - { + } else { assert(q->bitrate == I_F_Q); g1[0] = q->prev_g1[1]; - switch(q->erasure_count) - { + switch (q->erasure_count) { case 1 : break; case 2 : g1[0] -= 1; break; case 3 : g1[0] -= 2; break; @@ -296,8 +277,7 @@ static int codebook_sanity_check_for_rate_quarter(const uint8_t *cbgain) { 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) return -1; @@ -336,11 +316,9 @@ static void compute_svector(QCELPContext *q, const float *gain, uint16_t cbseed, cindex; float *rnd, tmp_gain, fir_filter_value; - switch(q->bitrate) - { + switch (q->bitrate) { case RATE_FULL: - for(i=0; i<16; i++) - { + 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++) @@ -348,8 +326,7 @@ static void compute_svector(QCELPContext *q, const float *gain, } break; case RATE_HALF: - for(i=0; i<4; i++) - { + 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++) @@ -363,11 +340,9 @@ static void compute_svector(QCELPContext *q, const float *gain, (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++) - { + for (i = 0; i < 8; i++) { tmp_gain = gain[i] * (QCELP_SQRT1887 / 32768.0); - for(k=0; k<20; k++) - { + for (k = 0; k < 20; k++) { cbseed = 521 * cbseed + 259; *rnd = (int16_t)cbseed; @@ -386,11 +361,9 @@ static void compute_svector(QCELPContext *q, const float *gain, break; case RATE_OCTAVE: cbseed = q->first16bits; - for(i=0; i<8; i++) - { + for (i = 0; i < 8; i++) { tmp_gain = gain[i] * (QCELP_SQRT1887 / 32768.0); - for(j=0; j<20; j++) - { + for (j = 0; j < 20; j++) { cbseed = 521 * cbseed + 259; *cdn_vector++ = tmp_gain * (int16_t)cbseed; } @@ -398,8 +371,7 @@ static void compute_svector(QCELPContext *q, const float *gain, break; case I_F_Q: cbseed = -44; // random codebook index - for(i=0; i<4; i++) - { + 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]; @@ -459,15 +431,11 @@ static const float *do_pitchfilter(float memory[303], const float v_in[160], v_out = memory + 143; // Output vector starts at memory[143]. - for(i=0; i<4; i++) - { - if(gain[i]) - { + for (i = 0; i < 4; i++) { + if (gain[i]) { v_lag = memory + 143 + 40 * i - lag[i]; - for(v_len=v_in+40; v_inbitrate >= RATE_HALF || q->bitrate == SILENCE || - (q->bitrate == I_F_Q && (q->prev_bitrate >= RATE_HALF))) - { + (q->bitrate == I_F_Q && (q->prev_bitrate >= RATE_HALF))) { - if(q->bitrate >= RATE_HALF) - { + if(q->bitrate >= RATE_HALF) { // Compute gain & lag for the whole frame. - for(i=0; i<4; i++) - { + for (i = 0; i < 4; i++) { q->pitch_gain[i] = q->frame.plag[i] ? (q->frame.pgain[i] + 1) * 0.25 : 0.0; q->pitch_lag[i] = q->frame.plag[i] + 16; } - }else - { + } else { float max_pitch_gain; - if (q->bitrate == I_F_Q) - { + if (q->bitrate == I_F_Q) { if (q->erasure_count < 3) max_pitch_gain = 0.9 - 0.3 * (q->erasure_count - 1); else max_pitch_gain = 0.0; - }else - { + } else { assert(q->bitrate == SILENCE); max_pitch_gain = 1.0; } @@ -553,8 +514,7 @@ static void apply_pitch_filters(QCELPContext *q, float *cdn_vector) q->frame.pfrac); apply_gain_ctrl(cdn_vector, v_synthesis_filtered, v_pre_filtered); - }else - { + } else { memcpy(q->pitch_synthesis_filter_mem, cdn_vector + 17, 143 * sizeof(float)); memcpy(q->pitch_pre_filter_mem, cdn_vector + 17, 143 * sizeof(float)); @@ -586,8 +546,7 @@ static void lspf2lpc(const float *lspf, float *lpc) ff_acelp_lspd2lpc(lsp, lpc, 5); - for (i=0; i<10; i++) - { + for (i = 0; i < 10; i++) { lpc[i] *= bandwidth_expansion_coeff; bandwidth_expansion_coeff *= QCELP_BANDWIDTH_EXPANSION_COEFF; } @@ -617,8 +576,7 @@ static void interpolate_lpc(QCELPContext *q, const float *curr_lspf, else weight = 1.0; - if(weight != 1.0) - { + if (weight != 1.0) { ff_weighted_vector_sumf(interpolated_lspf, curr_lspf, q->prev_lspf, weight, 1.0 - weight, 10); lspf2lpc(interpolated_lspf, lpc); @@ -631,8 +589,7 @@ static void interpolate_lpc(QCELPContext *q, const float *curr_lspf, static qcelp_packet_rate buf_size2bitrate(const int buf_size) { - switch(buf_size) - { + switch (buf_size) { case 35: return RATE_FULL; case 17: return RATE_HALF; case 8: return RATE_QUARTER; @@ -660,34 +617,28 @@ static qcelp_packet_rate determine_bitrate(AVCodecContext *avctx, const int buf_ { qcelp_packet_rate bitrate; - if((bitrate = buf_size2bitrate(buf_size)) >= 0) - { - if(bitrate > **buf) - { + if ((bitrate = buf_size2bitrate(buf_size)) >= 0) { + if (bitrate > **buf) { QCELPContext *q = avctx->priv_data; - if (!q->warned_buf_mismatch_bitrate) - { + if (!q->warned_buf_mismatch_bitrate) { av_log(avctx, AV_LOG_WARNING, "Claimed bitrate and buffer size mismatch.\n"); q->warned_buf_mismatch_bitrate = 1; } bitrate = **buf; - }else if(bitrate < **buf) - { + } else if (bitrate < **buf) { av_log(avctx, AV_LOG_ERROR, "Buffer is too small for the claimed bitrate.\n"); return I_F_Q; } (*buf)++; - }else if((bitrate = buf_size2bitrate(buf_size + 1)) >= 0) - { + } 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 return I_F_Q; - if(bitrate == SILENCE) - { + if (bitrate == SILENCE) { //FIXME: Remove experimental warning when tested with samples. av_log_ask_for_sample(avctx, "'Blank frame handling is experimental."); } @@ -749,21 +700,18 @@ static int qcelp_decode_frame(AVCodecContext *avctx, void *data, int *data_size, return AVERROR(EINVAL); } - if((q->bitrate = determine_bitrate(avctx, buf_size, &buf)) == I_F_Q) - { + if ((q->bitrate = determine_bitrate(avctx, buf_size, &buf)) == I_F_Q) { warn_insufficient_frame_quality(avctx, "bitrate cannot be determined."); goto erasure; } if(q->bitrate == RATE_OCTAVE && - (q->first16bits = AV_RB16(buf)) == 0xFFFF) - { + (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) - { + 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]; @@ -777,24 +725,19 @@ static int qcelp_decode_frame(AVCodecContext *avctx, void *data, int *data_size, unpacked_data[bitmaps->index] |= get_bits(&q->gb, bitmaps->bitlen) << bitmaps->bitpos; // Check for erasures/blanks on rates 1, 1/4 and 1/8. - if(q->frame.reserved) - { + if (q->frame.reserved) { 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)) - { + codebook_sanity_check_for_rate_quarter(q->frame.cbgain)) { warn_insufficient_frame_quality(avctx, "Codebook gain sanity check failed."); goto erasure; } - if(q->bitrate >= RATE_HALF) - { - for(i=0; i<4; i++) - { - if(q->frame.pfrac[i] && q->frame.plag[i] >= 124) - { + if (q->bitrate >= RATE_HALF) { + for (i = 0; i < 4; i++) { + if (q->frame.pfrac[i] && q->frame.plag[i] >= 124) { warn_insufficient_frame_quality(avctx, "Cannot initialize pitch filter."); goto erasure; } @@ -805,8 +748,7 @@ static int qcelp_decode_frame(AVCodecContext *avctx, void *data, int *data_size, decode_gain_and_index(q, gain); compute_svector(q, gain, outbuffer); - if(decode_lspf(q, quantized_lspf) < 0) - { + if (decode_lspf(q, quantized_lspf) < 0) { warn_insufficient_frame_quality(avctx, "Badly received packets in frame."); goto erasure; } @@ -814,8 +756,7 @@ static int qcelp_decode_frame(AVCodecContext *avctx, void *data, int *data_size, apply_pitch_filters(q, outbuffer); - if(q->bitrate == I_F_Q) - { + if (q->bitrate == I_F_Q) { erasure: q->bitrate = I_F_Q; q->erasure_count++; @@ -827,8 +768,7 @@ erasure: q->erasure_count = 0; formant_mem = q->formant_mem + 10; - for(i=0; i<4; i++) - { + 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);