2002-03-10 14:52:00 +00:00
|
|
|
/*
|
|
|
|
* Interface to libmp3lame for mp3 encoding
|
|
|
|
* Copyright (c) 2002 Lennert Buytenhek <buytenh@gnu.org>
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|
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*
|
2006-10-07 15:30:46 +00:00
|
|
|
* This file is part of FFmpeg.
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|
|
*
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|
|
|
* FFmpeg is free software; you can redistribute it and/or
|
2002-05-25 22:45:33 +00:00
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|
|
* modify it under the terms of the GNU Lesser General Public
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|
|
* License as published by the Free Software Foundation; either
|
2006-10-07 15:30:46 +00:00
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|
|
* version 2.1 of the License, or (at your option) any later version.
|
2002-03-10 14:52:00 +00:00
|
|
|
*
|
2006-10-07 15:30:46 +00:00
|
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
2002-03-10 14:52:00 +00:00
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
2002-05-25 22:45:33 +00:00
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|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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|
|
|
* Lesser General Public License for more details.
|
2002-03-10 14:52:00 +00:00
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|
|
*
|
2002-05-25 22:45:33 +00:00
|
|
|
* You should have received a copy of the GNU Lesser General Public
|
2006-10-07 15:30:46 +00:00
|
|
|
* License along with FFmpeg; if not, write to the Free Software
|
2006-01-12 22:43:26 +00:00
|
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|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
2002-03-10 14:52:00 +00:00
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*/
|
2005-12-17 18:14:38 +00:00
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|
2003-03-06 11:32:04 +00:00
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|
/**
|
2010-04-20 14:45:34 +00:00
|
|
|
* @file
|
2003-03-06 11:32:04 +00:00
|
|
|
* Interface to libmp3lame for mp3 encoding.
|
|
|
|
*/
|
2002-03-10 14:52:00 +00:00
|
|
|
|
2012-02-17 05:04:54 +00:00
|
|
|
#include <lame/lame.h>
|
|
|
|
|
2012-11-10 15:00:00 +00:00
|
|
|
#include "libavutil/channel_layout.h"
|
2012-08-06 13:49:32 +00:00
|
|
|
#include "libavutil/common.h"
|
2012-09-22 22:13:57 +00:00
|
|
|
#include "libavutil/float_dsp.h"
|
2011-05-20 07:33:57 +00:00
|
|
|
#include "libavutil/intreadwrite.h"
|
2011-08-27 08:09:09 +00:00
|
|
|
#include "libavutil/log.h"
|
|
|
|
#include "libavutil/opt.h"
|
2002-03-10 14:52:00 +00:00
|
|
|
#include "avcodec.h"
|
2012-02-19 18:16:34 +00:00
|
|
|
#include "audio_frame_queue.h"
|
2012-02-17 04:28:38 +00:00
|
|
|
#include "internal.h"
|
2002-03-10 14:52:00 +00:00
|
|
|
#include "mpegaudio.h"
|
2012-02-17 04:06:54 +00:00
|
|
|
#include "mpegaudiodecheader.h"
|
2002-03-10 14:52:00 +00:00
|
|
|
|
2012-01-08 17:36:17 +00:00
|
|
|
#define BUFFER_SIZE (7200 + 2 * MPA_FRAME_SIZE + MPA_FRAME_SIZE / 4+1000) // FIXME: Buffer size to small? Adding 1000 to make up for it.
|
2012-02-17 05:04:54 +00:00
|
|
|
|
|
|
|
typedef struct LAMEContext {
|
2011-08-27 08:09:09 +00:00
|
|
|
AVClass *class;
|
2012-02-17 06:50:57 +00:00
|
|
|
AVCodecContext *avctx;
|
2006-11-01 21:09:14 +00:00
|
|
|
lame_global_flags *gfp;
|
2012-10-16 18:07:04 +00:00
|
|
|
uint8_t *buffer;
|
2006-11-01 21:09:14 +00:00
|
|
|
int buffer_index;
|
2012-10-16 18:07:04 +00:00
|
|
|
int buffer_size;
|
2011-08-27 08:09:09 +00:00
|
|
|
int reservoir;
|
2013-03-30 22:15:50 +00:00
|
|
|
int joint_stereo;
|
2013-11-02 02:43:24 +00:00
|
|
|
int abr;
|
2012-08-22 16:23:21 +00:00
|
|
|
float *samples_flt[2];
|
2012-02-19 18:16:34 +00:00
|
|
|
AudioFrameQueue afq;
|
2014-11-30 10:21:50 +00:00
|
|
|
AVFloatDSPContext *fdsp;
|
2012-02-17 05:04:54 +00:00
|
|
|
} LAMEContext;
|
2002-03-10 14:52:00 +00:00
|
|
|
|
|
|
|
|
2012-10-16 18:07:04 +00:00
|
|
|
static int realloc_buffer(LAMEContext *s)
|
|
|
|
{
|
|
|
|
if (!s->buffer || s->buffer_size - s->buffer_index < BUFFER_SIZE) {
|
2013-12-06 12:44:17 +00:00
|
|
|
int new_size = s->buffer_index + 2 * BUFFER_SIZE, err;
|
2012-10-16 18:07:04 +00:00
|
|
|
|
|
|
|
av_dlog(s->avctx, "resizing output buffer: %d -> %d\n", s->buffer_size,
|
|
|
|
new_size);
|
2013-12-06 12:44:17 +00:00
|
|
|
if ((err = av_reallocp(&s->buffer, new_size)) < 0) {
|
2012-10-16 18:07:04 +00:00
|
|
|
s->buffer_size = s->buffer_index = 0;
|
2013-12-06 12:44:17 +00:00
|
|
|
return err;
|
2012-10-16 18:07:04 +00:00
|
|
|
}
|
|
|
|
s->buffer_size = new_size;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-02-17 05:04:54 +00:00
|
|
|
static av_cold int mp3lame_encode_close(AVCodecContext *avctx)
|
2002-03-10 14:52:00 +00:00
|
|
|
{
|
2012-02-17 05:04:54 +00:00
|
|
|
LAMEContext *s = avctx->priv_data;
|
2006-11-01 21:09:14 +00:00
|
|
|
|
2012-08-22 16:23:21 +00:00
|
|
|
av_freep(&s->samples_flt[0]);
|
|
|
|
av_freep(&s->samples_flt[1]);
|
2012-10-16 18:07:04 +00:00
|
|
|
av_freep(&s->buffer);
|
2014-11-30 10:21:50 +00:00
|
|
|
av_freep(&s->fdsp);
|
2012-02-17 03:12:03 +00:00
|
|
|
|
2012-02-19 18:16:34 +00:00
|
|
|
ff_af_queue_close(&s->afq);
|
|
|
|
|
2012-02-17 03:12:03 +00:00
|
|
|
lame_close(s->gfp);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-02-17 05:04:54 +00:00
|
|
|
static av_cold int mp3lame_encode_init(AVCodecContext *avctx)
|
2002-03-10 14:52:00 +00:00
|
|
|
{
|
2012-02-17 05:04:54 +00:00
|
|
|
LAMEContext *s = avctx->priv_data;
|
2012-02-17 03:12:03 +00:00
|
|
|
int ret;
|
2006-11-01 21:09:14 +00:00
|
|
|
|
2012-02-17 06:50:57 +00:00
|
|
|
s->avctx = avctx;
|
|
|
|
|
2012-02-17 05:04:54 +00:00
|
|
|
/* initialize LAME and get defaults */
|
2014-08-14 20:31:24 +00:00
|
|
|
if (!(s->gfp = lame_init()))
|
2012-02-17 03:12:03 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2012-02-17 05:04:54 +00:00
|
|
|
|
2012-05-16 00:27:31 +00:00
|
|
|
|
2006-11-01 21:09:14 +00:00
|
|
|
lame_set_num_channels(s->gfp, avctx->channels);
|
2013-03-30 22:15:50 +00:00
|
|
|
lame_set_mode(s->gfp, avctx->channels > 1 ? s->joint_stereo ? JOINT_STEREO : STEREO : MONO);
|
2006-11-01 21:09:14 +00:00
|
|
|
|
2012-02-17 05:04:54 +00:00
|
|
|
/* sample rate */
|
|
|
|
lame_set_in_samplerate (s->gfp, avctx->sample_rate);
|
2006-11-01 21:09:14 +00:00
|
|
|
lame_set_out_samplerate(s->gfp, avctx->sample_rate);
|
2012-02-17 05:04:54 +00:00
|
|
|
|
|
|
|
/* algorithmic quality */
|
2014-10-29 00:31:06 +00:00
|
|
|
if (avctx->compression_level != FF_COMPRESSION_DEFAULT)
|
2008-08-01 07:23:29 +00:00
|
|
|
lame_set_quality(s->gfp, avctx->compression_level);
|
2012-02-17 05:04:54 +00:00
|
|
|
|
|
|
|
/* rate control */
|
2013-10-24 03:57:36 +00:00
|
|
|
if (avctx->flags & CODEC_FLAG_QSCALE) { // VBR
|
2005-08-21 20:27:00 +00:00
|
|
|
lame_set_VBR(s->gfp, vbr_default);
|
2011-12-29 21:19:55 +00:00
|
|
|
lame_set_VBR_quality(s->gfp, avctx->global_quality / (float)FF_QP2LAMBDA);
|
2012-02-17 04:28:38 +00:00
|
|
|
} else {
|
2013-11-02 02:43:24 +00:00
|
|
|
if (avctx->bit_rate) {
|
|
|
|
if (s->abr) { // ABR
|
|
|
|
lame_set_VBR(s->gfp, vbr_abr);
|
|
|
|
lame_set_VBR_mean_bitrate_kbps(s->gfp, avctx->bit_rate / 1000);
|
|
|
|
} else // CBR
|
|
|
|
lame_set_brate(s->gfp, avctx->bit_rate / 1000);
|
|
|
|
}
|
2005-08-21 20:27:00 +00:00
|
|
|
}
|
2002-03-10 14:52:00 +00:00
|
|
|
|
2012-02-17 05:04:54 +00:00
|
|
|
/* do not get a Xing VBR header frame from LAME */
|
2006-11-01 21:09:14 +00:00
|
|
|
lame_set_bWriteVbrTag(s->gfp,0);
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2012-02-17 05:04:54 +00:00
|
|
|
/* bit reservoir usage */
|
2011-08-27 08:09:09 +00:00
|
|
|
lame_set_disable_reservoir(s->gfp, !s->reservoir);
|
2011-04-19 09:58:53 +00:00
|
|
|
|
2012-02-17 05:04:54 +00:00
|
|
|
/* set specified parameters */
|
2012-02-17 03:12:03 +00:00
|
|
|
if (lame_init_params(s->gfp) < 0) {
|
|
|
|
ret = -1;
|
|
|
|
goto error;
|
2011-04-19 09:58:53 +00:00
|
|
|
}
|
2002-03-10 14:52:00 +00:00
|
|
|
|
2012-02-19 18:16:34 +00:00
|
|
|
/* get encoder delay */
|
2014-08-23 12:40:50 +00:00
|
|
|
avctx->initial_padding = lame_get_encoder_delay(s->gfp) + 528 + 1;
|
2012-02-19 18:16:34 +00:00
|
|
|
ff_af_queue_init(avctx, &s->afq);
|
|
|
|
|
2012-02-17 05:04:54 +00:00
|
|
|
avctx->frame_size = lame_get_framesize(s->gfp);
|
2012-02-19 18:16:34 +00:00
|
|
|
|
2012-08-22 16:23:21 +00:00
|
|
|
/* allocate float sample buffers */
|
|
|
|
if (avctx->sample_fmt == AV_SAMPLE_FMT_FLTP) {
|
2012-02-17 06:50:57 +00:00
|
|
|
int ch;
|
|
|
|
for (ch = 0; ch < avctx->channels; ch++) {
|
2012-08-22 16:23:21 +00:00
|
|
|
s->samples_flt[ch] = av_malloc(avctx->frame_size *
|
|
|
|
sizeof(*s->samples_flt[ch]));
|
|
|
|
if (!s->samples_flt[ch]) {
|
2012-02-17 06:50:57 +00:00
|
|
|
ret = AVERROR(ENOMEM);
|
|
|
|
goto error;
|
|
|
|
}
|
2011-04-19 10:00:01 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-10-16 18:07:04 +00:00
|
|
|
ret = realloc_buffer(s);
|
|
|
|
if (ret < 0)
|
|
|
|
goto error;
|
|
|
|
|
2014-11-30 10:21:50 +00:00
|
|
|
s->fdsp = avpriv_float_dsp_alloc(avctx->flags & CODEC_FLAG_BITEXACT);
|
|
|
|
if (!s->fdsp) {
|
|
|
|
ret = AVERROR(ENOMEM);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
2012-08-22 16:23:21 +00:00
|
|
|
|
2006-11-01 21:09:14 +00:00
|
|
|
return 0;
|
2012-02-17 03:12:03 +00:00
|
|
|
error:
|
2012-02-17 05:04:54 +00:00
|
|
|
mp3lame_encode_close(avctx);
|
2012-02-17 03:12:03 +00:00
|
|
|
return ret;
|
2002-03-10 14:52:00 +00:00
|
|
|
}
|
|
|
|
|
2012-08-22 16:23:21 +00:00
|
|
|
#define ENCODE_BUFFER(func, buf_type, buf_name) do { \
|
|
|
|
lame_result = func(s->gfp, \
|
|
|
|
(const buf_type *)buf_name[0], \
|
|
|
|
(const buf_type *)buf_name[1], frame->nb_samples, \
|
|
|
|
s->buffer + s->buffer_index, \
|
2012-10-16 18:07:04 +00:00
|
|
|
s->buffer_size - s->buffer_index); \
|
2012-02-17 06:50:57 +00:00
|
|
|
} while (0)
|
|
|
|
|
2012-02-19 18:16:34 +00:00
|
|
|
static int mp3lame_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
|
|
|
|
const AVFrame *frame, int *got_packet_ptr)
|
2002-03-10 14:52:00 +00:00
|
|
|
{
|
2012-02-17 05:04:54 +00:00
|
|
|
LAMEContext *s = avctx->priv_data;
|
2012-02-17 04:06:54 +00:00
|
|
|
MPADecodeHeader hdr;
|
2012-08-22 16:23:21 +00:00
|
|
|
int len, ret, ch;
|
2006-11-01 21:09:14 +00:00
|
|
|
int lame_result;
|
2014-06-22 17:19:36 +00:00
|
|
|
uint32_t h;
|
2002-03-10 14:52:00 +00:00
|
|
|
|
2012-02-19 18:16:34 +00:00
|
|
|
if (frame) {
|
2012-02-17 06:50:57 +00:00
|
|
|
switch (avctx->sample_fmt) {
|
2012-08-22 16:23:21 +00:00
|
|
|
case AV_SAMPLE_FMT_S16P:
|
|
|
|
ENCODE_BUFFER(lame_encode_buffer, int16_t, frame->data);
|
2012-02-17 06:50:57 +00:00
|
|
|
break;
|
2012-08-22 16:23:21 +00:00
|
|
|
case AV_SAMPLE_FMT_S32P:
|
|
|
|
ENCODE_BUFFER(lame_encode_buffer_int, int32_t, frame->data);
|
2012-02-17 06:50:57 +00:00
|
|
|
break;
|
2012-08-22 16:23:21 +00:00
|
|
|
case AV_SAMPLE_FMT_FLTP:
|
|
|
|
if (frame->linesize[0] < 4 * FFALIGN(frame->nb_samples, 8)) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "inadequate AVFrame plane padding\n");
|
|
|
|
return AVERROR(EINVAL);
|
|
|
|
}
|
|
|
|
for (ch = 0; ch < avctx->channels; ch++) {
|
2014-11-30 10:21:50 +00:00
|
|
|
s->fdsp->vector_fmul_scalar(s->samples_flt[ch],
|
2012-09-22 22:13:57 +00:00
|
|
|
(const float *)frame->data[ch],
|
|
|
|
32768.0f,
|
|
|
|
FFALIGN(frame->nb_samples, 8));
|
2012-08-22 16:23:21 +00:00
|
|
|
}
|
|
|
|
ENCODE_BUFFER(lame_encode_buffer_float, float, s->samples_flt);
|
2012-02-17 06:50:57 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return AVERROR_BUG;
|
2011-04-19 10:00:01 +00:00
|
|
|
}
|
2014-05-19 14:56:55 +00:00
|
|
|
} else if (!s->afq.frame_alloc) {
|
|
|
|
lame_result = 0;
|
2011-12-29 21:19:55 +00:00
|
|
|
} else {
|
|
|
|
lame_result = lame_encode_flush(s->gfp, s->buffer + s->buffer_index,
|
2013-01-16 22:52:55 +00:00
|
|
|
s->buffer_size - s->buffer_index);
|
2004-04-16 01:48:05 +00:00
|
|
|
}
|
2011-12-29 21:19:55 +00:00
|
|
|
if (lame_result < 0) {
|
|
|
|
if (lame_result == -1) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
|
|
"lame: output buffer too small (buffer index: %d, free bytes: %d)\n",
|
2012-10-16 18:07:04 +00:00
|
|
|
s->buffer_index, s->buffer_size - s->buffer_index);
|
2009-01-11 16:17:36 +00:00
|
|
|
}
|
2009-01-11 16:16:33 +00:00
|
|
|
return -1;
|
2004-04-16 01:48:05 +00:00
|
|
|
}
|
|
|
|
s->buffer_index += lame_result;
|
2012-10-16 18:07:04 +00:00
|
|
|
ret = realloc_buffer(s);
|
|
|
|
if (ret < 0) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "error reallocating output buffer\n");
|
|
|
|
return ret;
|
|
|
|
}
|
2004-04-16 01:48:05 +00:00
|
|
|
|
2012-02-19 18:16:34 +00:00
|
|
|
/* add current frame to the queue */
|
|
|
|
if (frame) {
|
2013-01-13 23:03:38 +00:00
|
|
|
if ((ret = ff_af_queue_add(&s->afq, frame)) < 0)
|
2012-02-19 18:16:34 +00:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2012-02-17 05:04:54 +00:00
|
|
|
/* Move 1 frame from the LAME buffer to the output packet, if available.
|
|
|
|
We have to parse the first frame header in the output buffer to
|
|
|
|
determine the frame size. */
|
2011-12-29 21:19:55 +00:00
|
|
|
if (s->buffer_index < 4)
|
2004-04-16 01:48:05 +00:00
|
|
|
return 0;
|
2014-06-22 17:19:36 +00:00
|
|
|
h = AV_RB32(s->buffer);
|
|
|
|
if (ff_mpa_check_header(h) < 0) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid mp3 header at start of buffer\n");
|
|
|
|
return AVERROR_BUG;
|
|
|
|
}
|
|
|
|
if (avpriv_mpegaudio_decode_header(&hdr, h)) {
|
2012-02-17 04:06:54 +00:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "free format output not supported\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
len = hdr.frame_size;
|
2012-02-17 03:25:51 +00:00
|
|
|
av_dlog(avctx, "in:%d packet-len:%d index:%d\n", avctx->frame_size, len,
|
|
|
|
s->buffer_index);
|
2011-12-29 21:19:55 +00:00
|
|
|
if (len <= s->buffer_index) {
|
2013-03-06 19:11:00 +00:00
|
|
|
if ((ret = ff_alloc_packet2(avctx, avpkt, len)) < 0)
|
2012-02-19 18:16:34 +00:00
|
|
|
return ret;
|
|
|
|
memcpy(avpkt->data, s->buffer, len);
|
2009-01-11 16:17:36 +00:00
|
|
|
s->buffer_index -= len;
|
2011-12-29 21:19:55 +00:00
|
|
|
memmove(s->buffer, s->buffer + len, s->buffer_index);
|
2012-02-19 18:16:34 +00:00
|
|
|
|
|
|
|
/* Get the next frame pts/duration */
|
|
|
|
ff_af_queue_remove(&s->afq, avctx->frame_size, &avpkt->pts,
|
|
|
|
&avpkt->duration);
|
|
|
|
|
|
|
|
avpkt->size = len;
|
|
|
|
*got_packet_ptr = 1;
|
|
|
|
}
|
|
|
|
return 0;
|
2002-03-10 14:52:00 +00:00
|
|
|
}
|
|
|
|
|
2012-02-17 05:04:54 +00:00
|
|
|
#define OFFSET(x) offsetof(LAMEContext, x)
|
2011-08-27 08:09:09 +00:00
|
|
|
#define AE AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
|
|
|
|
static const AVOption options[] = {
|
2013-10-24 03:55:29 +00:00
|
|
|
{ "reservoir", "use bit reservoir", OFFSET(reservoir), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, AE },
|
|
|
|
{ "joint_stereo", "use joint stereo", OFFSET(joint_stereo), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, AE },
|
2013-11-02 02:43:24 +00:00
|
|
|
{ "abr", "use ABR", OFFSET(abr), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AE },
|
2011-08-27 08:09:09 +00:00
|
|
|
{ NULL },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const AVClass libmp3lame_class = {
|
|
|
|
.class_name = "libmp3lame encoder",
|
|
|
|
.item_name = av_default_item_name,
|
|
|
|
.option = options,
|
|
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
|
|
};
|
2002-03-10 14:52:00 +00:00
|
|
|
|
2012-02-17 04:28:38 +00:00
|
|
|
static const AVCodecDefault libmp3lame_defaults[] = {
|
|
|
|
{ "b", "0" },
|
|
|
|
{ NULL },
|
|
|
|
};
|
|
|
|
|
2012-02-17 05:04:54 +00:00
|
|
|
static const int libmp3lame_sample_rates[] = {
|
|
|
|
44100, 48000, 32000, 22050, 24000, 16000, 11025, 12000, 8000, 0
|
|
|
|
};
|
|
|
|
|
2011-01-25 21:40:11 +00:00
|
|
|
AVCodec ff_libmp3lame_encoder = {
|
2011-12-29 21:19:55 +00:00
|
|
|
.name = "libmp3lame",
|
2013-10-03 20:57:53 +00:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("libmp3lame MP3 (MPEG audio layer 3)"),
|
2011-12-29 21:19:55 +00:00
|
|
|
.type = AVMEDIA_TYPE_AUDIO,
|
2012-08-05 09:11:04 +00:00
|
|
|
.id = AV_CODEC_ID_MP3,
|
2012-02-17 05:04:54 +00:00
|
|
|
.priv_data_size = sizeof(LAMEContext),
|
|
|
|
.init = mp3lame_encode_init,
|
2012-02-19 18:16:34 +00:00
|
|
|
.encode2 = mp3lame_encode_frame,
|
2012-02-17 05:04:54 +00:00
|
|
|
.close = mp3lame_encode_close,
|
2012-02-19 18:16:34 +00:00
|
|
|
.capabilities = CODEC_CAP_DELAY | CODEC_CAP_SMALL_LAST_FRAME,
|
2012-08-22 16:23:21 +00:00
|
|
|
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S32P,
|
|
|
|
AV_SAMPLE_FMT_FLTP,
|
|
|
|
AV_SAMPLE_FMT_S16P,
|
2011-12-29 21:19:55 +00:00
|
|
|
AV_SAMPLE_FMT_NONE },
|
2012-02-17 05:04:54 +00:00
|
|
|
.supported_samplerates = libmp3lame_sample_rates,
|
2012-05-07 19:40:20 +00:00
|
|
|
.channel_layouts = (const uint64_t[]) { AV_CH_LAYOUT_MONO,
|
2012-05-31 22:07:36 +00:00
|
|
|
AV_CH_LAYOUT_STEREO,
|
2012-05-31 22:07:36 +00:00
|
|
|
0 },
|
2011-12-29 21:19:55 +00:00
|
|
|
.priv_class = &libmp3lame_class,
|
2012-02-17 04:28:38 +00:00
|
|
|
.defaults = libmp3lame_defaults,
|
2002-03-10 14:52:00 +00:00
|
|
|
};
|