mirror of https://git.ffmpeg.org/ffmpeg.git
g723.1dec: Make postfilter user switchable
Code from qatar (55c3a4f617
)
Author of the code was probably Mohamed or Kostya
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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1eb1392690
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62514ca012
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@ -1041,10 +1041,12 @@ static int g723_1_decode_frame(AVCodecContext *avctx, void *data,
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p->interp_index = comp_interp_index(p, p->pitch_lag[1],
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p->interp_index = comp_interp_index(p, p->pitch_lag[1],
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&p->sid_gain, &p->cur_gain);
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&p->sid_gain, &p->cur_gain);
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if (p->postfilter) {
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i = PITCH_MAX;
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i = PITCH_MAX;
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for (j = 0; j < SUBFRAMES; i += SUBFRAME_LEN, j++)
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for (j = 0; j < SUBFRAMES; i += SUBFRAME_LEN, j++)
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comp_ppf_coeff(p, i, p->pitch_lag[j >> 1],
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comp_ppf_coeff(p, i, p->pitch_lag[j >> 1],
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ppf + j, p->cur_rate);
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ppf + j, p->cur_rate);
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}
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/* Restore the original excitation */
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/* Restore the original excitation */
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memcpy(p->excitation, p->prev_excitation,
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memcpy(p->excitation, p->prev_excitation,
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@ -1052,6 +1054,7 @@ static int g723_1_decode_frame(AVCodecContext *avctx, void *data,
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memcpy(vector_ptr, out, FRAME_LEN * sizeof(*vector_ptr));
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memcpy(vector_ptr, out, FRAME_LEN * sizeof(*vector_ptr));
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/* Peform pitch postfiltering */
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/* Peform pitch postfiltering */
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if (p->postfilter)
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for (i = 0, j = 0; j < SUBFRAMES; i += SUBFRAME_LEN, j++)
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for (i = 0, j = 0; j < SUBFRAMES; i += SUBFRAME_LEN, j++)
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ff_acelp_weighted_vector_sum(out + LPC_ORDER + i,
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ff_acelp_weighted_vector_sum(out + LPC_ORDER + i,
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vector_ptr + i,
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vector_ptr + i,
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@ -1091,7 +1094,8 @@ static int g723_1_decode_frame(AVCodecContext *avctx, void *data,
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0, 1, 1 << 12);
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0, 1, 1 << 12);
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memcpy(p->synth_mem, out + FRAME_LEN, LPC_ORDER * sizeof(int16_t));
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memcpy(p->synth_mem, out + FRAME_LEN, LPC_ORDER * sizeof(int16_t));
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formant_postfilter(p, lpc, out);
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if (p->postfilter)
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formant_postfilter(p, lpc, out);
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memmove(out, out + LPC_ORDER, sizeof(int16_t)*FRAME_LEN);
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memmove(out, out + LPC_ORDER, sizeof(int16_t)*FRAME_LEN);
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p->frame.nb_samples = FRAME_LEN;
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p->frame.nb_samples = FRAME_LEN;
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@ -1101,6 +1105,22 @@ static int g723_1_decode_frame(AVCodecContext *avctx, void *data,
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return frame_size[dec_mode];
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return frame_size[dec_mode];
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}
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}
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#define OFFSET(x) offsetof(G723_1_Context, x)
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#define AD AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM
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static const AVOption options[] = {
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{ "postfilter", "postfilter on/off", OFFSET(postfilter), AV_OPT_TYPE_INT,
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{ 1 }, 0, 1, AD },
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{ NULL }
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};
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static const AVClass g723_1dec_class = {
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.class_name = "G.723.1 decoder",
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.item_name = av_default_item_name,
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.option = options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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AVCodec ff_g723_1_decoder = {
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AVCodec ff_g723_1_decoder = {
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.name = "g723_1",
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.name = "g723_1",
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.type = AVMEDIA_TYPE_AUDIO,
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.type = AVMEDIA_TYPE_AUDIO,
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@ -1110,6 +1130,7 @@ AVCodec ff_g723_1_decoder = {
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.decode = g723_1_decode_frame,
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.decode = g723_1_decode_frame,
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.long_name = NULL_IF_CONFIG_SMALL("G.723.1"),
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.long_name = NULL_IF_CONFIG_SMALL("G.723.1"),
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.capabilities = CODEC_CAP_SUBFRAMES | CODEC_CAP_DR1,
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.capabilities = CODEC_CAP_SUBFRAMES | CODEC_CAP_DR1,
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.priv_class = &g723_1dec_class,
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};
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};
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#if CONFIG_G723_1_ENCODER
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#if CONFIG_G723_1_ENCODER
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