mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
df4c7ae9db
This is required for the pending lavfi indev extension, also consistent with the video buffer sink.
98 lines
3.1 KiB
C
98 lines
3.1 KiB
C
/*
|
|
* Copyright (c) 2011 Stefano Sabatini
|
|
* 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
|
|
* audio buffer sink
|
|
*/
|
|
|
|
#include "avfilter.h"
|
|
#include "asink_abuffer.h"
|
|
|
|
static void filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
|
|
{
|
|
}
|
|
|
|
static int init(AVFilterContext *ctx, const char *args, void *opaque)
|
|
{
|
|
if (!opaque) {
|
|
av_log(ctx, AV_LOG_ERROR, "Opaque field required, please pass"
|
|
" an initialized ABufferSinkContext");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
memcpy(ctx->priv, opaque, sizeof(ABufferSinkContext));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
ABufferSinkContext *abuffersink = ctx->priv;
|
|
AVFilterFormats *formats = NULL;
|
|
|
|
if (!(formats = avfilter_make_format_list(abuffersink->sample_fmts)))
|
|
return AVERROR(ENOMEM);
|
|
avfilter_set_common_sample_formats(ctx, formats);
|
|
|
|
if (!(formats = avfilter_make_format64_list(abuffersink->channel_layouts)))
|
|
return AVERROR(ENOMEM);
|
|
avfilter_set_common_channel_layouts(ctx, formats);
|
|
|
|
if (!(formats = avfilter_make_format_list(abuffersink->packing_fmts)))
|
|
return AVERROR(ENOMEM);
|
|
avfilter_set_common_packing_formats(ctx, formats);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int av_asink_abuffer_get_audio_buffer_ref(AVFilterContext *abuffersink,
|
|
AVFilterBufferRef **samplesref,
|
|
int av_unused flags)
|
|
{
|
|
int ret;
|
|
AVFilterLink * const inlink = abuffersink->inputs[0];
|
|
|
|
if ((ret = avfilter_request_frame(inlink)))
|
|
return ret;
|
|
if (!inlink->cur_buf)
|
|
return AVERROR(EINVAL);
|
|
*samplesref = inlink->cur_buf;
|
|
inlink->cur_buf = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVFilter avfilter_asink_abuffersink = {
|
|
.name = "abuffersink",
|
|
.description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them available to the end of the filter graph."),
|
|
.init = init,
|
|
.priv_size = sizeof(ABufferSinkContext),
|
|
.query_formats = query_formats,
|
|
|
|
.inputs = (AVFilterPad[]) {{ .name = "default",
|
|
.type = AVMEDIA_TYPE_AUDIO,
|
|
.filter_samples = filter_samples,
|
|
.min_perms = AV_PERM_READ, },
|
|
{ .name = NULL }},
|
|
.outputs = (AVFilterPad[]) {{ .name = NULL }},
|
|
};
|
|
|