mirror of https://git.videolan.org/git/ffmpeg.git
lavc/g729dec: Cosmetics, fix indentation after last commit.
This commit is contained in:
Carl Eugen Hoyos
parent
641d52152f
commit
011c9112a0
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@ -272,8 +272,7 @@ static void g729d_get_new_exc(
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ff_celp_convolve_circ(fc_new, fc_cur, phase_filter[dstate], subframe_size);
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for(i=0; i<subframe_size; i++)
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{
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for (i = 0; i < subframe_size; i++) {
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out[i] = in[i];
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out[i] -= (gain_code * fc_cur[i] + 0x2000) >> 14;
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out[i] += (gain_code * fc_new[i] + 0x2000) >> 14;
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@ -289,10 +288,10 @@ static void g729d_get_new_exc(
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*/
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static int g729d_onset_decision(int past_onset, const int16_t* past_gain_code)
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{
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if((past_gain_code[0] >> 1) > past_gain_code[1])
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if ((past_gain_code[0] >> 1) > past_gain_code[1])
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return 2;
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else
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return FFMAX(past_onset-1, 0);
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return FFMAX(past_onset-1, 0);
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}
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/**
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@ -307,24 +306,25 @@ static int16_t g729d_voice_decision(int onset, int prev_voice_decision, const in
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{
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int i, low_gain_pitch_cnt, voice_decision;
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if(past_gain_pitch[0] >= 14745) // 0.9
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if (past_gain_pitch[0] >= 14745) { // 0.9
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voice_decision = DECISION_VOICE;
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else if (past_gain_pitch[0] <= 9830) // 0.6
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} else if (past_gain_pitch[0] <= 9830) { // 0.6
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voice_decision = DECISION_NOISE;
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else
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} else {
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voice_decision = DECISION_INTERMEDIATE;
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}
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for(i=0, low_gain_pitch_cnt=0; i<6; i++)
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if(past_gain_pitch[i] < 9830)
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for (i = 0, low_gain_pitch_cnt = 0; i < 6; i++)
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if (past_gain_pitch[i] < 9830)
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low_gain_pitch_cnt++;
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if(low_gain_pitch_cnt > 2 && !onset)
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if (low_gain_pitch_cnt > 2 && !onset)
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voice_decision = DECISION_NOISE;
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if(!onset && voice_decision > prev_voice_decision + 1)
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if (!onset && voice_decision > prev_voice_decision + 1)
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voice_decision--;
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if(onset && voice_decision < DECISION_VOICE)
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if (onset && voice_decision < DECISION_VOICE)
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voice_decision++;
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return voice_decision;
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@ -361,30 +361,30 @@ static av_cold int decoder_init(AVCodecContext * avctx)
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return AVERROR(ENOMEM);
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for (c = 0; c < avctx->channels; c++) {
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ctx->gain_coeff = 16384; // 1.0 in (1.14)
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ctx->gain_coeff = 16384; // 1.0 in (1.14)
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for (k = 0; k < MA_NP + 1; k++) {
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ctx->past_quantizer_outputs[k] = ctx->past_quantizer_output_buf[k];
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for (i = 1; i < 11; i++)
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ctx->past_quantizer_outputs[k][i - 1] = (18717 * i) >> 3;
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}
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for (k = 0; k < MA_NP + 1; k++) {
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ctx->past_quantizer_outputs[k] = ctx->past_quantizer_output_buf[k];
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for (i = 1; i < 11; i++)
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ctx->past_quantizer_outputs[k][i - 1] = (18717 * i) >> 3;
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}
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ctx->lsp[0] = ctx->lsp_buf[0];
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ctx->lsp[1] = ctx->lsp_buf[1];
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memcpy(ctx->lsp[0], lsp_init, 10 * sizeof(int16_t));
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ctx->lsp[0] = ctx->lsp_buf[0];
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ctx->lsp[1] = ctx->lsp_buf[1];
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memcpy(ctx->lsp[0], lsp_init, 10 * sizeof(int16_t));
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ctx->exc = &ctx->exc_base[PITCH_DELAY_MAX+INTERPOL_LEN];
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ctx->exc = &ctx->exc_base[PITCH_DELAY_MAX+INTERPOL_LEN];
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ctx->pitch_delay_int_prev = PITCH_DELAY_MIN;
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ctx->pitch_delay_int_prev = PITCH_DELAY_MIN;
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/* random seed initialization */
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ctx->rand_value = 21845;
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/* random seed initialization */
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ctx->rand_value = 21845;
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/* quantized prediction error */
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for(i=0; i<4; i++)
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ctx->quant_energy[i] = -14336; // -14 in (5.10)
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/* quantized prediction error */
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for (i = 0; i < 4; i++)
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ctx->quant_energy[i] = -14336; // -14 in (5.10)
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ctx++;
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ctx++;
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}
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ff_audiodsp_init(&s->adsp);
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@ -441,286 +441,289 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr,
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}
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for (c = 0; c < avctx->channels; c++) {
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int frame_erasure = 0; ///< frame erasure detected during decoding
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int bad_pitch = 0; ///< parity check failed
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int is_periodic = 0; ///< whether one of the subframes is declared as periodic or not
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out_frame = (int16_t*)frame->data[c];
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int frame_erasure = 0; ///< frame erasure detected during decoding
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int bad_pitch = 0; ///< parity check failed
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int is_periodic = 0; ///< whether one of the subframes is declared as periodic or not
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out_frame = (int16_t*)frame->data[c];
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for (i=0; i < buf_size; i++)
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frame_erasure |= buf[i];
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frame_erasure = !frame_erasure;
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for (i = 0; i < buf_size; i++)
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frame_erasure |= buf[i];
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frame_erasure = !frame_erasure;
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init_get_bits(&gb, buf, 8*buf_size);
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init_get_bits(&gb, buf, 8*buf_size);
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ma_predictor = get_bits(&gb, 1);
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quantizer_1st = get_bits(&gb, VQ_1ST_BITS);
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quantizer_2nd_lo = get_bits(&gb, VQ_2ND_BITS);
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quantizer_2nd_hi = get_bits(&gb, VQ_2ND_BITS);
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if(frame_erasure)
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lsf_restore_from_previous(ctx->lsfq, ctx->past_quantizer_outputs,
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ctx->ma_predictor_prev);
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else {
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lsf_decode(ctx->lsfq, ctx->past_quantizer_outputs,
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ma_predictor,
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quantizer_1st, quantizer_2nd_lo, quantizer_2nd_hi);
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ctx->ma_predictor_prev = ma_predictor;
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}
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tmp = ctx->past_quantizer_outputs[MA_NP];
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memmove(ctx->past_quantizer_outputs + 1, ctx->past_quantizer_outputs,
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MA_NP * sizeof(int16_t*));
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ctx->past_quantizer_outputs[0] = tmp;
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ff_acelp_lsf2lsp(ctx->lsp[1], ctx->lsfq, 10);
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ff_acelp_lp_decode(&lp[0][0], &lp[1][0], ctx->lsp[1], ctx->lsp[0], 10);
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FFSWAP(int16_t*, ctx->lsp[1], ctx->lsp[0]);
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for (i = 0; i < 2; i++) {
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int gain_corr_factor;
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uint8_t ac_index; ///< adaptive codebook index
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uint8_t pulses_signs; ///< fixed-codebook vector pulse signs
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int fc_indexes; ///< fixed-codebook indexes
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uint8_t gc_1st_index; ///< gain codebook (first stage) index
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uint8_t gc_2nd_index; ///< gain codebook (second stage) index
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ac_index = get_bits(&gb, format->ac_index_bits[i]);
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if(!i && format->parity_bit)
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bad_pitch = av_parity(ac_index >> 2) == get_bits1(&gb);
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fc_indexes = get_bits(&gb, format->fc_indexes_bits);
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pulses_signs = get_bits(&gb, format->fc_signs_bits);
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gc_1st_index = get_bits(&gb, format->gc_1st_index_bits);
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gc_2nd_index = get_bits(&gb, format->gc_2nd_index_bits);
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if (frame_erasure)
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pitch_delay_3x = 3 * ctx->pitch_delay_int_prev;
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else if(!i) {
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if (bad_pitch)
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pitch_delay_3x = 3 * ctx->pitch_delay_int_prev;
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else
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pitch_delay_3x = ff_acelp_decode_8bit_to_1st_delay3(ac_index);
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} else {
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int pitch_delay_min = av_clip(ctx->pitch_delay_int_prev - 5,
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PITCH_DELAY_MIN, PITCH_DELAY_MAX - 9);
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if(packet_type == FORMAT_G729D_6K4)
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pitch_delay_3x = ff_acelp_decode_4bit_to_2nd_delay3(ac_index, pitch_delay_min);
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else
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pitch_delay_3x = ff_acelp_decode_5_6_bit_to_2nd_delay3(ac_index, pitch_delay_min);
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}
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/* Round pitch delay to nearest (used everywhere except ff_acelp_interpolate). */
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pitch_delay_int[i] = (pitch_delay_3x + 1) / 3;
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if (pitch_delay_int[i] > PITCH_DELAY_MAX) {
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av_log(avctx, AV_LOG_WARNING, "pitch_delay_int %d is too large\n", pitch_delay_int[i]);
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pitch_delay_int[i] = PITCH_DELAY_MAX;
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}
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ma_predictor = get_bits(&gb, 1);
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quantizer_1st = get_bits(&gb, VQ_1ST_BITS);
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quantizer_2nd_lo = get_bits(&gb, VQ_2ND_BITS);
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quantizer_2nd_hi = get_bits(&gb, VQ_2ND_BITS);
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if (frame_erasure) {
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ctx->rand_value = g729_prng(ctx->rand_value);
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fc_indexes = av_mod_uintp2(ctx->rand_value, format->fc_indexes_bits);
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ctx->rand_value = g729_prng(ctx->rand_value);
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pulses_signs = ctx->rand_value;
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}
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memset(fc, 0, sizeof(int16_t) * SUBFRAME_SIZE);
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switch (packet_type) {
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case FORMAT_G729_8K:
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ff_acelp_fc_pulse_per_track(fc, ff_fc_4pulses_8bits_tracks_13,
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ff_fc_4pulses_8bits_track_4,
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fc_indexes, pulses_signs, 3, 3);
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break;
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case FORMAT_G729D_6K4:
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ff_acelp_fc_pulse_per_track(fc, ff_fc_2pulses_9bits_track1_gray,
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ff_fc_2pulses_9bits_track2_gray,
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fc_indexes, pulses_signs, 1, 4);
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break;
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}
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/*
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This filter enhances harmonic components of the fixed-codebook vector to
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improve the quality of the reconstructed speech.
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/ fc_v[i], i < pitch_delay
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fc_v[i] = <
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\ fc_v[i] + gain_pitch * fc_v[i-pitch_delay], i >= pitch_delay
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*/
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ff_acelp_weighted_vector_sum(fc + pitch_delay_int[i],
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fc + pitch_delay_int[i],
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fc, 1 << 14,
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av_clip(ctx->past_gain_pitch[0], SHARP_MIN, SHARP_MAX),
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0, 14,
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SUBFRAME_SIZE - pitch_delay_int[i]);
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memmove(ctx->past_gain_pitch+1, ctx->past_gain_pitch, 5 * sizeof(int16_t));
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ctx->past_gain_code[1] = ctx->past_gain_code[0];
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if (frame_erasure) {
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ctx->past_gain_pitch[0] = (29491 * ctx->past_gain_pitch[0]) >> 15; // 0.90 (0.15)
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ctx->past_gain_code[0] = ( 2007 * ctx->past_gain_code[0] ) >> 11; // 0.98 (0.11)
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gain_corr_factor = 0;
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lsf_restore_from_previous(ctx->lsfq, ctx->past_quantizer_outputs,
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ctx->ma_predictor_prev);
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} else {
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if (packet_type == FORMAT_G729D_6K4) {
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ctx->past_gain_pitch[0] = cb_gain_1st_6k4[gc_1st_index][0] +
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cb_gain_2nd_6k4[gc_2nd_index][0];
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gain_corr_factor = cb_gain_1st_6k4[gc_1st_index][1] +
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cb_gain_2nd_6k4[gc_2nd_index][1];
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lsf_decode(ctx->lsfq, ctx->past_quantizer_outputs,
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ma_predictor,
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quantizer_1st, quantizer_2nd_lo, quantizer_2nd_hi);
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ctx->ma_predictor_prev = ma_predictor;
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}
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/* Without check below overflow can occur in ff_acelp_update_past_gain.
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It is not issue for G.729, because gain_corr_factor in it's case is always
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greater than 1024, while in G.729D it can be even zero. */
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gain_corr_factor = FFMAX(gain_corr_factor, 1024);
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#ifndef G729_BITEXACT
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gain_corr_factor >>= 1;
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#endif
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tmp = ctx->past_quantizer_outputs[MA_NP];
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memmove(ctx->past_quantizer_outputs + 1, ctx->past_quantizer_outputs,
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MA_NP * sizeof(int16_t*));
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ctx->past_quantizer_outputs[0] = tmp;
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ff_acelp_lsf2lsp(ctx->lsp[1], ctx->lsfq, 10);
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ff_acelp_lp_decode(&lp[0][0], &lp[1][0], ctx->lsp[1], ctx->lsp[0], 10);
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FFSWAP(int16_t*, ctx->lsp[1], ctx->lsp[0]);
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for (i = 0; i < 2; i++) {
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int gain_corr_factor;
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uint8_t ac_index; ///< adaptive codebook index
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uint8_t pulses_signs; ///< fixed-codebook vector pulse signs
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int fc_indexes; ///< fixed-codebook indexes
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uint8_t gc_1st_index; ///< gain codebook (first stage) index
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uint8_t gc_2nd_index; ///< gain codebook (second stage) index
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ac_index = get_bits(&gb, format->ac_index_bits[i]);
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if (!i && format->parity_bit)
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bad_pitch = av_parity(ac_index >> 2) == get_bits1(&gb);
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fc_indexes = get_bits(&gb, format->fc_indexes_bits);
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pulses_signs = get_bits(&gb, format->fc_signs_bits);
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gc_1st_index = get_bits(&gb, format->gc_1st_index_bits);
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gc_2nd_index = get_bits(&gb, format->gc_2nd_index_bits);
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if (frame_erasure) {
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pitch_delay_3x = 3 * ctx->pitch_delay_int_prev;
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} else if (!i) {
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if (bad_pitch) {
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pitch_delay_3x = 3 * ctx->pitch_delay_int_prev;
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} else {
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pitch_delay_3x = ff_acelp_decode_8bit_to_1st_delay3(ac_index);
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}
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} else {
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ctx->past_gain_pitch[0] = cb_gain_1st_8k[gc_1st_index][0] +
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cb_gain_2nd_8k[gc_2nd_index][0];
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gain_corr_factor = cb_gain_1st_8k[gc_1st_index][1] +
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cb_gain_2nd_8k[gc_2nd_index][1];
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int pitch_delay_min = av_clip(ctx->pitch_delay_int_prev - 5,
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PITCH_DELAY_MIN, PITCH_DELAY_MAX - 9);
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if (packet_type == FORMAT_G729D_6K4) {
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pitch_delay_3x = ff_acelp_decode_4bit_to_2nd_delay3(ac_index, pitch_delay_min);
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} else {
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pitch_delay_3x = ff_acelp_decode_5_6_bit_to_2nd_delay3(ac_index, pitch_delay_min);
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}
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}
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/* Round pitch delay to nearest (used everywhere except ff_acelp_interpolate). */
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pitch_delay_int[i] = (pitch_delay_3x + 1) / 3;
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if (pitch_delay_int[i] > PITCH_DELAY_MAX) {
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av_log(avctx, AV_LOG_WARNING, "pitch_delay_int %d is too large\n", pitch_delay_int[i]);
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pitch_delay_int[i] = PITCH_DELAY_MAX;
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}
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if (frame_erasure) {
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ctx->rand_value = g729_prng(ctx->rand_value);
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fc_indexes = av_mod_uintp2(ctx->rand_value, format->fc_indexes_bits);
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ctx->rand_value = g729_prng(ctx->rand_value);
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pulses_signs = ctx->rand_value;
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}
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memset(fc, 0, sizeof(int16_t) * SUBFRAME_SIZE);
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switch (packet_type) {
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case FORMAT_G729_8K:
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ff_acelp_fc_pulse_per_track(fc, ff_fc_4pulses_8bits_tracks_13,
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ff_fc_4pulses_8bits_track_4,
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fc_indexes, pulses_signs, 3, 3);
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break;
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case FORMAT_G729D_6K4:
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ff_acelp_fc_pulse_per_track(fc, ff_fc_2pulses_9bits_track1_gray,
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ff_fc_2pulses_9bits_track2_gray,
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fc_indexes, pulses_signs, 1, 4);
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break;
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}
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/* Decode the fixed-codebook gain. */
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ctx->past_gain_code[0] = ff_acelp_decode_gain_code(&s->adsp, gain_corr_factor,
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fc, MR_ENERGY,
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ctx->quant_energy,
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ma_prediction_coeff,
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SUBFRAME_SIZE, 4);
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#ifdef G729_BITEXACT
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/*
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This correction required to get bit-exact result with
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reference code, because gain_corr_factor in G.729D is
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two times larger than in original G.729.
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This filter enhances harmonic components of the fixed-codebook vector to
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improve the quality of the reconstructed speech.
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If bit-exact result is not issue then gain_corr_factor
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can be simpler divided by 2 before call to g729_get_gain_code
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instead of using correction below.
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/ fc_v[i], i < pitch_delay
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fc_v[i] = <
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\ fc_v[i] + gain_pitch * fc_v[i-pitch_delay], i >= pitch_delay
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*/
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if (packet_type == FORMAT_G729D_6K4) {
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gain_corr_factor >>= 1;
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ctx->past_gain_code[0] >>= 1;
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ff_acelp_weighted_vector_sum(fc + pitch_delay_int[i],
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fc + pitch_delay_int[i],
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fc, 1 << 14,
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av_clip(ctx->past_gain_pitch[0], SHARP_MIN, SHARP_MAX),
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0, 14,
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SUBFRAME_SIZE - pitch_delay_int[i]);
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|
||||
memmove(ctx->past_gain_pitch+1, ctx->past_gain_pitch, 5 * sizeof(int16_t));
|
||||
ctx->past_gain_code[1] = ctx->past_gain_code[0];
|
||||
|
||||
if (frame_erasure) {
|
||||
ctx->past_gain_pitch[0] = (29491 * ctx->past_gain_pitch[0]) >> 15; // 0.90 (0.15)
|
||||
ctx->past_gain_code[0] = ( 2007 * ctx->past_gain_code[0] ) >> 11; // 0.98 (0.11)
|
||||
|
||||
gain_corr_factor = 0;
|
||||
} else {
|
||||
if (packet_type == FORMAT_G729D_6K4) {
|
||||
ctx->past_gain_pitch[0] = cb_gain_1st_6k4[gc_1st_index][0] +
|
||||
cb_gain_2nd_6k4[gc_2nd_index][0];
|
||||
gain_corr_factor = cb_gain_1st_6k4[gc_1st_index][1] +
|
||||
cb_gain_2nd_6k4[gc_2nd_index][1];
|
||||
|
||||
/* Without check below overflow can occur in ff_acelp_update_past_gain.
|
||||
It is not issue for G.729, because gain_corr_factor in it's case is always
|
||||
greater than 1024, while in G.729D it can be even zero. */
|
||||
gain_corr_factor = FFMAX(gain_corr_factor, 1024);
|
||||
#ifndef G729_BITEXACT
|
||||
gain_corr_factor >>= 1;
|
||||
#endif
|
||||
} else {
|
||||
ctx->past_gain_pitch[0] = cb_gain_1st_8k[gc_1st_index][0] +
|
||||
cb_gain_2nd_8k[gc_2nd_index][0];
|
||||
gain_corr_factor = cb_gain_1st_8k[gc_1st_index][1] +
|
||||
cb_gain_2nd_8k[gc_2nd_index][1];
|
||||
}
|
||||
|
||||
/* Decode the fixed-codebook gain. */
|
||||
ctx->past_gain_code[0] = ff_acelp_decode_gain_code(&s->adsp, gain_corr_factor,
|
||||
fc, MR_ENERGY,
|
||||
ctx->quant_energy,
|
||||
ma_prediction_coeff,
|
||||
SUBFRAME_SIZE, 4);
|
||||
#ifdef G729_BITEXACT
|
||||
/*
|
||||
This correction required to get bit-exact result with
|
||||
reference code, because gain_corr_factor in G.729D is
|
||||
two times larger than in original G.729.
|
||||
|
||||
If bit-exact result is not issue then gain_corr_factor
|
||||
can be simpler divided by 2 before call to g729_get_gain_code
|
||||
instead of using correction below.
|
||||
*/
|
||||
if (packet_type == FORMAT_G729D_6K4) {
|
||||
gain_corr_factor >>= 1;
|
||||
ctx->past_gain_code[0] >>= 1;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
}
|
||||
ff_acelp_update_past_gain(ctx->quant_energy, gain_corr_factor, 2, frame_erasure);
|
||||
ff_acelp_update_past_gain(ctx->quant_energy, gain_corr_factor, 2, frame_erasure);
|
||||
|
||||
/* Routine requires rounding to lowest. */
|
||||
ff_acelp_interpolate(ctx->exc + i * SUBFRAME_SIZE,
|
||||
ctx->exc + i * SUBFRAME_SIZE - pitch_delay_3x / 3,
|
||||
ff_acelp_interp_filter, 6,
|
||||
(pitch_delay_3x % 3) << 1,
|
||||
10, SUBFRAME_SIZE);
|
||||
/* Routine requires rounding to lowest. */
|
||||
ff_acelp_interpolate(ctx->exc + i * SUBFRAME_SIZE,
|
||||
ctx->exc + i * SUBFRAME_SIZE - pitch_delay_3x / 3,
|
||||
ff_acelp_interp_filter, 6,
|
||||
(pitch_delay_3x % 3) << 1,
|
||||
10, SUBFRAME_SIZE);
|
||||
|
||||
ff_acelp_weighted_vector_sum(ctx->exc + i * SUBFRAME_SIZE,
|
||||
ctx->exc + i * SUBFRAME_SIZE, fc,
|
||||
(!ctx->was_periodic && frame_erasure) ? 0 : ctx->past_gain_pitch[0],
|
||||
( ctx->was_periodic && frame_erasure) ? 0 : ctx->past_gain_code[0],
|
||||
1 << 13, 14, SUBFRAME_SIZE);
|
||||
ff_acelp_weighted_vector_sum(ctx->exc + i * SUBFRAME_SIZE,
|
||||
ctx->exc + i * SUBFRAME_SIZE, fc,
|
||||
(!ctx->was_periodic && frame_erasure) ? 0 : ctx->past_gain_pitch[0],
|
||||
( ctx->was_periodic && frame_erasure) ? 0 : ctx->past_gain_code[0],
|
||||
1 << 13, 14, SUBFRAME_SIZE);
|
||||
|
||||
memcpy(synth, ctx->syn_filter_data, 10 * sizeof(int16_t));
|
||||
memcpy(synth, ctx->syn_filter_data, 10 * sizeof(int16_t));
|
||||
|
||||
if (ff_celp_lp_synthesis_filter(
|
||||
synth+10,
|
||||
&lp[i][1],
|
||||
ctx->exc + i * SUBFRAME_SIZE,
|
||||
SUBFRAME_SIZE,
|
||||
10,
|
||||
1,
|
||||
0,
|
||||
0x800))
|
||||
/* Overflow occurred, downscale excitation signal... */
|
||||
for (j = 0; j < 2 * SUBFRAME_SIZE + PITCH_DELAY_MAX + INTERPOL_LEN; j++)
|
||||
ctx->exc_base[j] >>= 2;
|
||||
|
||||
/* ... and make synthesis again. */
|
||||
if (packet_type == FORMAT_G729D_6K4) {
|
||||
int16_t exc_new[SUBFRAME_SIZE];
|
||||
|
||||
ctx->onset = g729d_onset_decision(ctx->onset, ctx->past_gain_code);
|
||||
ctx->voice_decision = g729d_voice_decision(ctx->onset, ctx->voice_decision, ctx->past_gain_pitch);
|
||||
|
||||
g729d_get_new_exc(exc_new, ctx->exc + i * SUBFRAME_SIZE, fc, ctx->voice_decision, ctx->past_gain_code[0], SUBFRAME_SIZE);
|
||||
|
||||
ff_celp_lp_synthesis_filter(
|
||||
synth+10,
|
||||
&lp[i][1],
|
||||
exc_new,
|
||||
SUBFRAME_SIZE,
|
||||
10,
|
||||
0,
|
||||
0,
|
||||
0x800);
|
||||
} else {
|
||||
ff_celp_lp_synthesis_filter(
|
||||
synth+10,
|
||||
&lp[i][1],
|
||||
ctx->exc + i * SUBFRAME_SIZE,
|
||||
SUBFRAME_SIZE,
|
||||
10,
|
||||
0,
|
||||
0,
|
||||
0x800);
|
||||
}
|
||||
/* Save data (without postfilter) for use in next subframe. */
|
||||
memcpy(ctx->syn_filter_data, synth+SUBFRAME_SIZE, 10 * sizeof(int16_t));
|
||||
|
||||
/* Calculate gain of unfiltered signal for use in AGC. */
|
||||
gain_before = 0;
|
||||
for (j = 0; j < SUBFRAME_SIZE; j++)
|
||||
gain_before += FFABS(synth[j+10]);
|
||||
|
||||
/* Call postfilter and also update voicing decision for use in next frame. */
|
||||
ff_g729_postfilter(
|
||||
&s->adsp,
|
||||
&ctx->ht_prev_data,
|
||||
&is_periodic,
|
||||
&lp[i][0],
|
||||
pitch_delay_int[0],
|
||||
ctx->residual,
|
||||
ctx->res_filter_data,
|
||||
ctx->pos_filter_data,
|
||||
synth+10,
|
||||
SUBFRAME_SIZE);
|
||||
|
||||
/* Calculate gain of filtered signal for use in AGC. */
|
||||
gain_after = 0;
|
||||
for(j=0; j<SUBFRAME_SIZE; j++)
|
||||
gain_after += FFABS(synth[j+10]);
|
||||
|
||||
ctx->gain_coeff = ff_g729_adaptive_gain_control(
|
||||
gain_before,
|
||||
gain_after,
|
||||
if (ff_celp_lp_synthesis_filter(
|
||||
synth+10,
|
||||
&lp[i][1],
|
||||
ctx->exc + i * SUBFRAME_SIZE,
|
||||
SUBFRAME_SIZE,
|
||||
ctx->gain_coeff);
|
||||
10,
|
||||
1,
|
||||
0,
|
||||
0x800))
|
||||
/* Overflow occurred, downscale excitation signal... */
|
||||
for (j = 0; j < 2 * SUBFRAME_SIZE + PITCH_DELAY_MAX + INTERPOL_LEN; j++)
|
||||
ctx->exc_base[j] >>= 2;
|
||||
|
||||
if (frame_erasure)
|
||||
ctx->pitch_delay_int_prev = FFMIN(ctx->pitch_delay_int_prev + 1, PITCH_DELAY_MAX);
|
||||
else
|
||||
ctx->pitch_delay_int_prev = pitch_delay_int[i];
|
||||
/* ... and make synthesis again. */
|
||||
if (packet_type == FORMAT_G729D_6K4) {
|
||||
int16_t exc_new[SUBFRAME_SIZE];
|
||||
|
||||
memcpy(synth+8, ctx->hpf_z, 2*sizeof(int16_t));
|
||||
ff_acelp_high_pass_filter(
|
||||
out_frame + i*SUBFRAME_SIZE,
|
||||
ctx->hpf_f,
|
||||
synth+10,
|
||||
SUBFRAME_SIZE);
|
||||
memcpy(ctx->hpf_z, synth+8+SUBFRAME_SIZE, 2*sizeof(int16_t));
|
||||
}
|
||||
ctx->onset = g729d_onset_decision(ctx->onset, ctx->past_gain_code);
|
||||
ctx->voice_decision = g729d_voice_decision(ctx->onset, ctx->voice_decision, ctx->past_gain_pitch);
|
||||
|
||||
ctx->was_periodic = is_periodic;
|
||||
g729d_get_new_exc(exc_new, ctx->exc + i * SUBFRAME_SIZE, fc, ctx->voice_decision, ctx->past_gain_code[0], SUBFRAME_SIZE);
|
||||
|
||||
/* Save signal for use in next frame. */
|
||||
memmove(ctx->exc_base, ctx->exc_base + 2 * SUBFRAME_SIZE, (PITCH_DELAY_MAX+INTERPOL_LEN)*sizeof(int16_t));
|
||||
ff_celp_lp_synthesis_filter(
|
||||
synth+10,
|
||||
&lp[i][1],
|
||||
exc_new,
|
||||
SUBFRAME_SIZE,
|
||||
10,
|
||||
0,
|
||||
0,
|
||||
0x800);
|
||||
} else {
|
||||
ff_celp_lp_synthesis_filter(
|
||||
synth+10,
|
||||
&lp[i][1],
|
||||
ctx->exc + i * SUBFRAME_SIZE,
|
||||
SUBFRAME_SIZE,
|
||||
10,
|
||||
0,
|
||||
0,
|
||||
0x800);
|
||||
}
|
||||
/* Save data (without postfilter) for use in next subframe. */
|
||||
memcpy(ctx->syn_filter_data, synth+SUBFRAME_SIZE, 10 * sizeof(int16_t));
|
||||
|
||||
buf += packet_type == FORMAT_G729_8K ? G729_8K_BLOCK_SIZE : G729D_6K4_BLOCK_SIZE;
|
||||
ctx++;
|
||||
/* Calculate gain of unfiltered signal for use in AGC. */
|
||||
gain_before = 0;
|
||||
for (j = 0; j < SUBFRAME_SIZE; j++)
|
||||
gain_before += FFABS(synth[j+10]);
|
||||
|
||||
/* Call postfilter and also update voicing decision for use in next frame. */
|
||||
ff_g729_postfilter(
|
||||
&s->adsp,
|
||||
&ctx->ht_prev_data,
|
||||
&is_periodic,
|
||||
&lp[i][0],
|
||||
pitch_delay_int[0],
|
||||
ctx->residual,
|
||||
ctx->res_filter_data,
|
||||
ctx->pos_filter_data,
|
||||
synth+10,
|
||||
SUBFRAME_SIZE);
|
||||
|
||||
/* Calculate gain of filtered signal for use in AGC. */
|
||||
gain_after = 0;
|
||||
for (j = 0; j < SUBFRAME_SIZE; j++)
|
||||
gain_after += FFABS(synth[j+10]);
|
||||
|
||||
ctx->gain_coeff = ff_g729_adaptive_gain_control(
|
||||
gain_before,
|
||||
gain_after,
|
||||
synth+10,
|
||||
SUBFRAME_SIZE,
|
||||
ctx->gain_coeff);
|
||||
|
||||
if (frame_erasure) {
|
||||
ctx->pitch_delay_int_prev = FFMIN(ctx->pitch_delay_int_prev + 1, PITCH_DELAY_MAX);
|
||||
} else {
|
||||
ctx->pitch_delay_int_prev = pitch_delay_int[i];
|
||||
}
|
||||
|
||||
memcpy(synth+8, ctx->hpf_z, 2*sizeof(int16_t));
|
||||
ff_acelp_high_pass_filter(
|
||||
out_frame + i*SUBFRAME_SIZE,
|
||||
ctx->hpf_f,
|
||||
synth+10,
|
||||
SUBFRAME_SIZE);
|
||||
memcpy(ctx->hpf_z, synth+8+SUBFRAME_SIZE, 2*sizeof(int16_t));
|
||||
}
|
||||
|
||||
ctx->was_periodic = is_periodic;
|
||||
|
||||
/* Save signal for use in next frame. */
|
||||
memmove(ctx->exc_base, ctx->exc_base + 2 * SUBFRAME_SIZE, (PITCH_DELAY_MAX+INTERPOL_LEN)*sizeof(int16_t));
|
||||
|
||||
buf += packet_type == FORMAT_G729_8K ? G729_8K_BLOCK_SIZE : G729D_6K4_BLOCK_SIZE;
|
||||
ctx++;
|
||||
}
|
||||
|
||||
*got_frame_ptr = 1;
|
||||
|
|
|
|||
Loading…
Reference in New Issue