* Copyright (c) 2008 Vladimir Voroshilov
* Copyright (c) 2009 Vitor Sessak
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <math.h>
#include <stdint.h>
+#include <string.h>
+#include "libavutil/channel_layout.h"
+#include "libavutil/float_dsp.h"
#include "libavutil/mathematics.h"
#include "avcodec.h"
-#define ALT_BITSTREAM_READER_LE
+#define BITSTREAM_READER_LE
#include "get_bits.h"
-#include "dsputil.h"
+#include "internal.h"
#include "lsp.h"
-#include "celp_math.h"
#include "acelp_vectors.h"
#include "acelp_pitch_delay.h"
#include "acelp_filters.h"
#include "sipr.h"
#include "siprdata.h"
-typedef struct {
+typedef struct SiprModeParam {
const char *mode_name;
uint16_t bits_per_frame;
uint8_t subframe_count;
{
int i, j;
- parms->ma_pred_switch = get_bits(pgb, p->ma_predictor_bits);
+ if (p->ma_predictor_bits)
+ parms->ma_pred_switch = get_bits(pgb, p->ma_predictor_bits);
for (i = 0; i < 5; i++)
parms->vq_indexes[i] = get_bits(pgb, p->vq_indexes_bits[i]);
for (i = 0; i < p->subframe_count; i++) {
parms->pitch_delay[i] = get_bits(pgb, p->pitch_delay_bits[i]);
- parms->gp_index[i] = get_bits(pgb, p->gp_index_bits);
+ if (p->gp_index_bits)
+ parms->gp_index[i] = get_bits(pgb, p->gp_index_bits);
for (j = 0; j < p->number_of_fc_indexes; j++)
parms->fc_indexes[i][j] = get_bits(pgb, p->fc_index_bits[j]);
float tmp1[SUBFR_SIZE+1], tmp2[LP_FILTER_ORDER+1];
int i;
- tmp1[0] = 1.;
+ tmp1[0] = 1.0;
for (i = 0; i < LP_FILTER_ORDER; i++) {
tmp1[i+1] = Az[i] * ff_pow_0_55[i];
tmp2[i ] = Az[i] * ff_pow_0_7 [i];
convolute_with_sparse(fixed_vector, &fixed_cb, impulse_response,
SUBFR_SIZE);
- avg_energy =
- (0.01 + ff_dot_productf(fixed_vector, fixed_vector, SUBFR_SIZE))/
- SUBFR_SIZE;
+ avg_energy = (0.01 + avpriv_scalarproduct_float_c(fixed_vector,
+ fixed_vector,
+ SUBFR_SIZE)) /
+ SUBFR_SIZE;
ctx->past_pitch_gain = pitch_gain = gain_cb[params->gc_index[i]][0];
if (ctx->mode == MODE_5k0) {
for (i = 0; i < subframe_count; i++) {
- float energy = ff_dot_productf(ctx->postfilter_syn5k0 + LP_FILTER_ORDER + i*SUBFR_SIZE,
- ctx->postfilter_syn5k0 + LP_FILTER_ORDER + i*SUBFR_SIZE,
- SUBFR_SIZE);
+ float energy = avpriv_scalarproduct_float_c(ctx->postfilter_syn5k0 + LP_FILTER_ORDER + i * SUBFR_SIZE,
+ ctx->postfilter_syn5k0 + LP_FILTER_ORDER + i * SUBFR_SIZE,
+ SUBFR_SIZE);
ff_adaptive_gain_control(&synth[i * SUBFR_SIZE],
&synth[i * SUBFR_SIZE], energy,
SUBFR_SIZE, 0.9, &ctx->postfilter_agc);
memcpy(ctx->postfilter_syn5k0, ctx->postfilter_syn5k0 + frame_size,
LP_FILTER_ORDER*sizeof(float));
}
- memcpy(ctx->excitation, excitation - PITCH_DELAY_MAX - L_INTERPOL,
+ memmove(ctx->excitation, excitation - PITCH_DELAY_MAX - L_INTERPOL,
(PITCH_DELAY_MAX + L_INTERPOL) * sizeof(float));
ff_acelp_apply_order_2_transfer_function(out_data, synth,
SiprContext *ctx = avctx->priv_data;
int i;
- if (avctx->bit_rate > 12200) ctx->mode = MODE_16k;
- else if (avctx->bit_rate > 7500 ) ctx->mode = MODE_8k5;
- else if (avctx->bit_rate > 5750 ) ctx->mode = MODE_6k5;
- else ctx->mode = MODE_5k0;
+ switch (avctx->block_align) {
+ case 20: ctx->mode = MODE_16k; break;
+ case 19: ctx->mode = MODE_8k5; break;
+ case 29: ctx->mode = MODE_6k5; break;
+ case 37: ctx->mode = MODE_5k0; break;
+ default:
+ if (avctx->bit_rate > 12200) ctx->mode = MODE_16k;
+ else if (avctx->bit_rate > 7500 ) ctx->mode = MODE_8k5;
+ else if (avctx->bit_rate > 5750 ) ctx->mode = MODE_6k5;
+ else ctx->mode = MODE_5k0;
+ av_log(avctx, AV_LOG_WARNING,
+ "Invalid block_align: %d. Mode %s guessed based on bitrate: %d\n",
+ avctx->block_align, modes[ctx->mode].mode_name, avctx->bit_rate);
+ }
av_log(avctx, AV_LOG_DEBUG, "Mode: %s\n", modes[ctx->mode].mode_name);
- if (ctx->mode == MODE_16k)
+ if (ctx->mode == MODE_16k) {
ff_sipr_init_16k(ctx);
+ ctx->decode_frame = ff_sipr_decode_frame_16k;
+ } else {
+ ctx->decode_frame = decode_frame;
+ }
for (i = 0; i < LP_FILTER_ORDER; i++)
ctx->lsp_history[i] = cos((i+1) * M_PI / (LP_FILTER_ORDER + 1));
for (i = 0; i < 4; i++)
ctx->energy_history[i] = -14;
- avctx->sample_fmt = AV_SAMPLE_FMT_FLT;
-
- dsputil_init(&ctx->dsp, avctx);
+ avctx->channels = 1;
+ avctx->channel_layout = AV_CH_LAYOUT_MONO;
+ avctx->sample_fmt = AV_SAMPLE_FMT_FLT;
return 0;
}
-static int sipr_decode_frame(AVCodecContext *avctx, void *datap,
- int *data_size, AVPacket *avpkt)
+static int sipr_decode_frame(AVCodecContext *avctx, void *data,
+ int *got_frame_ptr, AVPacket *avpkt)
{
SiprContext *ctx = avctx->priv_data;
+ AVFrame *frame = data;
const uint8_t *buf=avpkt->data;
SiprParameters parm;
const SiprModeParam *mode_par = &modes[ctx->mode];
GetBitContext gb;
- float *data = datap;
+ float *samples;
int subframe_size = ctx->mode == MODE_16k ? L_SUBFR_16k : SUBFR_SIZE;
- int i;
+ int i, ret;
ctx->avctx = avctx;
if (avpkt->size < (mode_par->bits_per_frame >> 3)) {
av_log(avctx, AV_LOG_ERROR,
"Error processing packet: packet size (%d) too small\n",
avpkt->size);
-
- *data_size = 0;
return -1;
}
- if (*data_size < subframe_size * mode_par->subframe_count * sizeof(float)) {
- av_log(avctx, AV_LOG_ERROR,
- "Error processing packet: output buffer (%d) too small\n",
- *data_size);
- *data_size = 0;
- return -1;
+ /* get output buffer */
+ frame->nb_samples = mode_par->frames_per_packet * subframe_size *
+ mode_par->subframe_count;
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;
}
+ samples = (float *)frame->data[0];
init_get_bits(&gb, buf, mode_par->bits_per_frame);
for (i = 0; i < mode_par->frames_per_packet; i++) {
decode_parameters(&parm, &gb, mode_par);
- if (ctx->mode == MODE_16k)
- ff_sipr_decode_frame_16k(ctx, &parm, data);
- else
- decode_frame(ctx, &parm, data);
+ ctx->decode_frame(ctx, &parm, samples);
- data += subframe_size * mode_par->subframe_count;
+ samples += subframe_size * mode_par->subframe_count;
}
- *data_size = mode_par->frames_per_packet * subframe_size *
- mode_par->subframe_count * sizeof(float);
+ *got_frame_ptr = 1;
return mode_par->bits_per_frame >> 3;
}
-AVCodec sipr_decoder = {
- "sipr",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_SIPR,
- sizeof(SiprContext),
- sipr_decoder_init,
- NULL,
- NULL,
- sipr_decode_frame,
- .long_name = NULL_IF_CONFIG_SMALL("RealAudio SIPR / ACELP.NET"),
+AVCodec ff_sipr_decoder = {
+ .name = "sipr",
+ .long_name = NULL_IF_CONFIG_SMALL("RealAudio SIPR / ACELP.NET"),
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_SIPR,
+ .priv_data_size = sizeof(SiprContext),
+ .init = sipr_decoder_init,
+ .decode = sipr_decode_frame,
+ .capabilities = AV_CODEC_CAP_DR1,
};
projects / ffmpeg / blobdiff