mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
2eb2e1798e
It is the same as avfilter_get_audio_buffer_ref_from_arrays except it has a "channels" and the channel layout can be 0.
124 lines
3.9 KiB
C
124 lines
3.9 KiB
C
/*
|
|
* Copyright (c) 2008 Vitor Sessak
|
|
* Copyright (c) 2010 S.N. Hemanth Meenakshisundaram
|
|
* Copyright (c) 2011 Mina Nagy Zaki
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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,
|
|
* 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
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* memory buffer source filter
|
|
*/
|
|
|
|
#include "avfilter.h"
|
|
#include "internal.h"
|
|
#include "audio.h"
|
|
#include "avcodec.h"
|
|
#include "buffersrc.h"
|
|
#include "asrc_abuffer.h"
|
|
#include "libavutil/avstring.h"
|
|
#include "libavutil/channel_layout.h"
|
|
#include "libavutil/fifo.h"
|
|
#include "libavutil/imgutils.h"
|
|
|
|
typedef struct {
|
|
AVFifoBuffer *fifo;
|
|
AVRational time_base; ///< time_base to set in the output link
|
|
int eof;
|
|
unsigned nb_failed_requests;
|
|
|
|
/* Video only */
|
|
AVFilterContext *scale;
|
|
int h, w;
|
|
enum AVPixelFormat pix_fmt;
|
|
AVRational sample_aspect_ratio;
|
|
char sws_param[256];
|
|
|
|
/* Audio only */
|
|
// Audio format of incoming buffers
|
|
int sample_rate;
|
|
unsigned int sample_format;
|
|
int64_t channel_layout;
|
|
|
|
// Normalization filters
|
|
AVFilterContext *aconvert;
|
|
AVFilterContext *aresample;
|
|
} BufferSourceContext;
|
|
|
|
static void buf_free(AVFilterBuffer *ptr)
|
|
{
|
|
av_free(ptr);
|
|
return;
|
|
}
|
|
|
|
int av_asrc_buffer_add_audio_buffer_ref(AVFilterContext *ctx,
|
|
AVFilterBufferRef *samplesref,
|
|
int av_unused flags)
|
|
{
|
|
return av_buffersrc_add_ref(ctx, samplesref, AV_BUFFERSRC_FLAG_NO_COPY);
|
|
}
|
|
|
|
int av_asrc_buffer_add_samples(AVFilterContext *ctx,
|
|
uint8_t *data[8], int linesize[8],
|
|
int nb_samples, int sample_rate,
|
|
int sample_fmt, int64_t channel_layout, int planar,
|
|
int64_t pts, int av_unused flags)
|
|
{
|
|
AVFilterBufferRef *samplesref;
|
|
|
|
if (!channel_layout)
|
|
return AVERROR(EINVAL);
|
|
samplesref = avfilter_get_audio_buffer_ref_from_arrays(
|
|
data, linesize[0], AV_PERM_WRITE,
|
|
nb_samples,
|
|
sample_fmt, channel_layout);
|
|
if (!samplesref)
|
|
return AVERROR(ENOMEM);
|
|
|
|
samplesref->buf->free = buf_free;
|
|
samplesref->pts = pts;
|
|
samplesref->audio->sample_rate = sample_rate;
|
|
|
|
AV_NOWARN_DEPRECATED(
|
|
return av_asrc_buffer_add_audio_buffer_ref(ctx, samplesref, 0);
|
|
)
|
|
}
|
|
|
|
int av_asrc_buffer_add_buffer(AVFilterContext *ctx,
|
|
uint8_t *buf, int buf_size, int sample_rate,
|
|
int sample_fmt, int64_t channel_layout, int planar,
|
|
int64_t pts, int av_unused flags)
|
|
{
|
|
uint8_t *data[8] = {0};
|
|
int linesize[8];
|
|
int nb_channels = av_get_channel_layout_nb_channels(channel_layout),
|
|
nb_samples = buf_size / nb_channels / av_get_bytes_per_sample(sample_fmt);
|
|
|
|
av_samples_fill_arrays(data, linesize,
|
|
buf, nb_channels, nb_samples,
|
|
sample_fmt, 16);
|
|
|
|
AV_NOWARN_DEPRECATED(
|
|
return av_asrc_buffer_add_samples(ctx,
|
|
data, linesize, nb_samples,
|
|
sample_rate,
|
|
sample_fmt, channel_layout, planar,
|
|
pts, flags);
|
|
)
|
|
}
|