mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-10-18 12:33:27 +00:00
6b402cdbf4
The function currently writes directly into the input link, which requires it to be called after the filter has been linked. However, the documentation does not mention this restriction and the natural place to call av_buffersink_set_frame_size() during the options-setting stage, that is before filter init (and so before the input link exists).
406 lines
13 KiB
C
406 lines
13 KiB
C
/*
|
|
* Copyright (c) 2011 Stefano Sabatini
|
|
*
|
|
* 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
|
|
* buffer sink
|
|
*/
|
|
|
|
#include "libavutil/avassert.h"
|
|
#include "libavutil/avstring.h"
|
|
#include "libavutil/channel_layout.h"
|
|
#include "libavutil/common.h"
|
|
#include "libavutil/internal.h"
|
|
#include "libavutil/opt.h"
|
|
|
|
#include "audio.h"
|
|
#include "avfilter.h"
|
|
#include "avfilter_internal.h"
|
|
#include "buffersink.h"
|
|
#include "filters.h"
|
|
#include "formats.h"
|
|
#include "framequeue.h"
|
|
#include "video.h"
|
|
|
|
typedef struct BufferSinkContext {
|
|
const AVClass *class;
|
|
unsigned warning_limit;
|
|
unsigned frame_size;
|
|
|
|
/* only used for video */
|
|
enum AVPixelFormat *pixel_fmts; ///< list of accepted pixel formats
|
|
int pixel_fmts_size;
|
|
enum AVColorSpace *color_spaces; ///< list of accepted color spaces
|
|
int color_spaces_size;
|
|
enum AVColorRange *color_ranges; ///< list of accepted color ranges
|
|
int color_ranges_size;
|
|
|
|
/* only used for audio */
|
|
enum AVSampleFormat *sample_fmts; ///< list of accepted sample formats
|
|
int sample_fmts_size;
|
|
char *channel_layouts_str; ///< list of accepted channel layouts
|
|
int all_channel_counts;
|
|
int *sample_rates; ///< list of accepted sample rates
|
|
int sample_rates_size;
|
|
|
|
AVFrame *peeked_frame;
|
|
} BufferSinkContext;
|
|
|
|
#define NB_ITEMS(list) (list ## _size / sizeof(*list))
|
|
|
|
int attribute_align_arg av_buffersink_get_frame(AVFilterContext *ctx, AVFrame *frame)
|
|
{
|
|
return av_buffersink_get_frame_flags(ctx, frame, 0);
|
|
}
|
|
|
|
static int return_or_keep_frame(BufferSinkContext *buf, AVFrame *out, AVFrame *in, int flags)
|
|
{
|
|
if ((flags & AV_BUFFERSINK_FLAG_PEEK)) {
|
|
buf->peeked_frame = in;
|
|
return out ? av_frame_ref(out, in) : 0;
|
|
} else {
|
|
av_assert1(out);
|
|
buf->peeked_frame = NULL;
|
|
av_frame_move_ref(out, in);
|
|
av_frame_free(&in);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int get_frame_internal(AVFilterContext *ctx, AVFrame *frame, int flags, int samples)
|
|
{
|
|
BufferSinkContext *buf = ctx->priv;
|
|
AVFilterLink *inlink = ctx->inputs[0];
|
|
FilterLinkInternal *li = ff_link_internal(inlink);
|
|
int status, ret;
|
|
AVFrame *cur_frame;
|
|
int64_t pts;
|
|
|
|
if (buf->peeked_frame)
|
|
return return_or_keep_frame(buf, frame, buf->peeked_frame, flags);
|
|
|
|
while (1) {
|
|
ret = samples ? ff_inlink_consume_samples(inlink, samples, samples, &cur_frame) :
|
|
ff_inlink_consume_frame(inlink, &cur_frame);
|
|
if (ret < 0) {
|
|
return ret;
|
|
} else if (ret) {
|
|
/* TODO return the frame instead of copying it */
|
|
return return_or_keep_frame(buf, frame, cur_frame, flags);
|
|
} else if (ff_inlink_acknowledge_status(inlink, &status, &pts)) {
|
|
return status;
|
|
} else if ((flags & AV_BUFFERSINK_FLAG_NO_REQUEST)) {
|
|
return AVERROR(EAGAIN);
|
|
} else if (li->frame_wanted_out) {
|
|
ret = ff_filter_graph_run_once(ctx->graph);
|
|
if (ret < 0)
|
|
return ret;
|
|
} else {
|
|
ff_inlink_request_frame(inlink);
|
|
}
|
|
}
|
|
}
|
|
|
|
int attribute_align_arg av_buffersink_get_frame_flags(AVFilterContext *ctx, AVFrame *frame, int flags)
|
|
{
|
|
return get_frame_internal(ctx, frame, flags,
|
|
ff_filter_link(ctx->inputs[0])->min_samples);
|
|
}
|
|
|
|
int attribute_align_arg av_buffersink_get_samples(AVFilterContext *ctx,
|
|
AVFrame *frame, int nb_samples)
|
|
{
|
|
return get_frame_internal(ctx, frame, 0, nb_samples);
|
|
}
|
|
|
|
static av_cold int common_init(AVFilterContext *ctx)
|
|
{
|
|
BufferSinkContext *buf = ctx->priv;
|
|
|
|
buf->warning_limit = 100;
|
|
return 0;
|
|
}
|
|
|
|
static void uninit(AVFilterContext *ctx)
|
|
{
|
|
BufferSinkContext *buf = ctx->priv;
|
|
|
|
av_frame_free(&buf->peeked_frame);
|
|
}
|
|
|
|
static int activate(AVFilterContext *ctx)
|
|
{
|
|
BufferSinkContext *buf = ctx->priv;
|
|
FilterLinkInternal * const li = ff_link_internal(ctx->inputs[0]);
|
|
|
|
if (buf->warning_limit &&
|
|
ff_framequeue_queued_frames(&li->fifo) >= buf->warning_limit) {
|
|
av_log(ctx, AV_LOG_WARNING,
|
|
"%d buffers queued in %s, something may be wrong.\n",
|
|
buf->warning_limit,
|
|
(char *)av_x_if_null(ctx->name, ctx->filter->name));
|
|
buf->warning_limit *= 10;
|
|
}
|
|
|
|
/* The frame is queued, the rest is up to get_frame_internal */
|
|
return 0;
|
|
}
|
|
|
|
static int config_input_audio(AVFilterLink *inlink)
|
|
{
|
|
BufferSinkContext *buf = inlink->dst->priv;
|
|
FilterLink *l = ff_filter_link(inlink);
|
|
|
|
l->min_samples = l->max_samples = buf->frame_size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void av_buffersink_set_frame_size(AVFilterContext *ctx, unsigned frame_size)
|
|
{
|
|
BufferSinkContext *buf = ctx->priv;
|
|
buf->frame_size = frame_size;
|
|
|
|
if (ctx->inputs && ctx->inputs[0]) {
|
|
FilterLink *l = ff_filter_link(ctx->inputs[0]);
|
|
l->min_samples = l->max_samples = buf->frame_size;
|
|
}
|
|
}
|
|
|
|
#define MAKE_AVFILTERLINK_ACCESSOR(type, field) \
|
|
type av_buffersink_get_##field(const AVFilterContext *ctx) { \
|
|
av_assert0(ctx->filter->activate == activate); \
|
|
return ctx->inputs[0]->field; \
|
|
}
|
|
|
|
MAKE_AVFILTERLINK_ACCESSOR(enum AVMediaType , type )
|
|
MAKE_AVFILTERLINK_ACCESSOR(AVRational , time_base )
|
|
MAKE_AVFILTERLINK_ACCESSOR(int , format )
|
|
|
|
MAKE_AVFILTERLINK_ACCESSOR(int , w )
|
|
MAKE_AVFILTERLINK_ACCESSOR(int , h )
|
|
MAKE_AVFILTERLINK_ACCESSOR(AVRational , sample_aspect_ratio)
|
|
MAKE_AVFILTERLINK_ACCESSOR(enum AVColorSpace, colorspace)
|
|
MAKE_AVFILTERLINK_ACCESSOR(enum AVColorRange, color_range)
|
|
|
|
MAKE_AVFILTERLINK_ACCESSOR(int , sample_rate )
|
|
|
|
AVRational av_buffersink_get_frame_rate(const AVFilterContext *ctx)
|
|
{
|
|
FilterLink *l = ff_filter_link(ctx->inputs[0]);
|
|
av_assert0(ctx->filter->activate == activate);
|
|
return l->frame_rate;
|
|
}
|
|
|
|
AVBufferRef* av_buffersink_get_hw_frames_ctx(const AVFilterContext *ctx)
|
|
{
|
|
FilterLink *l = ff_filter_link(ctx->inputs[0]);
|
|
av_assert0(ctx->filter->activate == activate);
|
|
return l->hw_frames_ctx;
|
|
}
|
|
|
|
int av_buffersink_get_channels(const AVFilterContext *ctx)
|
|
{
|
|
av_assert0(ctx->filter->activate == activate);
|
|
return ctx->inputs[0]->ch_layout.nb_channels;
|
|
}
|
|
|
|
int av_buffersink_get_ch_layout(const AVFilterContext *ctx, AVChannelLayout *out)
|
|
{
|
|
AVChannelLayout ch_layout = { 0 };
|
|
int ret;
|
|
|
|
av_assert0(ctx->filter->activate == activate);
|
|
ret = av_channel_layout_copy(&ch_layout, &ctx->inputs[0]->ch_layout);
|
|
if (ret < 0)
|
|
return ret;
|
|
*out = ch_layout;
|
|
return 0;
|
|
}
|
|
|
|
#define CHECK_LIST_SIZE(field) \
|
|
if (buf->field ## _size % sizeof(*buf->field)) { \
|
|
av_log(ctx, AV_LOG_ERROR, "Invalid size for " #field ": %d, " \
|
|
"should be multiple of %d\n", \
|
|
buf->field ## _size, (int)sizeof(*buf->field)); \
|
|
return AVERROR(EINVAL); \
|
|
}
|
|
static int vsink_query_formats(AVFilterContext *ctx)
|
|
{
|
|
BufferSinkContext *buf = ctx->priv;
|
|
unsigned i;
|
|
int ret;
|
|
|
|
CHECK_LIST_SIZE(pixel_fmts)
|
|
CHECK_LIST_SIZE(color_spaces)
|
|
CHECK_LIST_SIZE(color_ranges)
|
|
if (buf->pixel_fmts_size) {
|
|
AVFilterFormats *formats = NULL;
|
|
for (i = 0; i < NB_ITEMS(buf->pixel_fmts); i++)
|
|
if ((ret = ff_add_format(&formats, buf->pixel_fmts[i])) < 0)
|
|
return ret;
|
|
if ((ret = ff_set_common_formats(ctx, formats)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (buf->color_spaces_size) {
|
|
AVFilterFormats *formats = NULL;
|
|
for (i = 0; i < NB_ITEMS(buf->color_spaces); i++)
|
|
if ((ret = ff_add_format(&formats, buf->color_spaces[i])) < 0)
|
|
return ret;
|
|
if ((ret = ff_set_common_color_spaces(ctx, formats)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (buf->color_ranges_size) {
|
|
AVFilterFormats *formats = NULL;
|
|
for (i = 0; i < NB_ITEMS(buf->color_ranges); i++)
|
|
if ((ret = ff_add_format(&formats, buf->color_ranges[i])) < 0)
|
|
return ret;
|
|
if ((ret = ff_set_common_color_ranges(ctx, formats)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int asink_query_formats(AVFilterContext *ctx)
|
|
{
|
|
BufferSinkContext *buf = ctx->priv;
|
|
AVFilterFormats *formats = NULL;
|
|
AVChannelLayout layout = { 0 };
|
|
AVFilterChannelLayouts *layouts = NULL;
|
|
unsigned i;
|
|
int ret;
|
|
|
|
CHECK_LIST_SIZE(sample_fmts)
|
|
CHECK_LIST_SIZE(sample_rates)
|
|
|
|
if (buf->sample_fmts_size) {
|
|
for (i = 0; i < NB_ITEMS(buf->sample_fmts); i++)
|
|
if ((ret = ff_add_format(&formats, buf->sample_fmts[i])) < 0)
|
|
return ret;
|
|
if ((ret = ff_set_common_formats(ctx, formats)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (buf->channel_layouts_str || buf->all_channel_counts) {
|
|
if (buf->channel_layouts_str) {
|
|
const char *cur = buf->channel_layouts_str;
|
|
|
|
while (cur) {
|
|
char *next = strchr(cur, '|');
|
|
if (next)
|
|
*next++ = 0;
|
|
|
|
ret = av_channel_layout_from_string(&layout, cur);
|
|
if (ret < 0) {
|
|
av_log(ctx, AV_LOG_ERROR, "Error parsing channel layout: %s.\n", cur);
|
|
return ret;
|
|
}
|
|
ret = ff_add_channel_layout(&layouts, &layout);
|
|
av_channel_layout_uninit(&layout);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
cur = next;
|
|
}
|
|
}
|
|
|
|
if (buf->all_channel_counts) {
|
|
if (layouts)
|
|
av_log(ctx, AV_LOG_WARNING,
|
|
"Conflicting all_channel_counts and list in options\n");
|
|
else if (!(layouts = ff_all_channel_counts()))
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
if ((ret = ff_set_common_channel_layouts(ctx, layouts)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (buf->sample_rates_size) {
|
|
formats = NULL;
|
|
for (i = 0; i < NB_ITEMS(buf->sample_rates); i++)
|
|
if ((ret = ff_add_format(&formats, buf->sample_rates[i])) < 0)
|
|
return ret;
|
|
if ((ret = ff_set_common_samplerates(ctx, formats)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(BufferSinkContext, x)
|
|
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
|
|
static const AVOption buffersink_options[] = {
|
|
{ "pix_fmts", "set the supported pixel formats", OFFSET(pixel_fmts), AV_OPT_TYPE_BINARY, .flags = FLAGS },
|
|
{ "color_spaces", "set the supported color spaces", OFFSET(color_spaces), AV_OPT_TYPE_BINARY, .flags = FLAGS },
|
|
{ "color_ranges", "set the supported color ranges", OFFSET(color_ranges), AV_OPT_TYPE_BINARY, .flags = FLAGS },
|
|
{ NULL },
|
|
};
|
|
#undef FLAGS
|
|
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_AUDIO_PARAM
|
|
static const AVOption abuffersink_options[] = {
|
|
{ "sample_fmts", "set the supported sample formats", OFFSET(sample_fmts), AV_OPT_TYPE_BINARY, .flags = FLAGS },
|
|
{ "sample_rates", "set the supported sample rates", OFFSET(sample_rates), AV_OPT_TYPE_BINARY, .flags = FLAGS },
|
|
{ "ch_layouts", "set a '|'-separated list of supported channel layouts",
|
|
OFFSET(channel_layouts_str), AV_OPT_TYPE_STRING, .flags = FLAGS },
|
|
{ "all_channel_counts", "accept all channel counts", OFFSET(all_channel_counts), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
|
|
{ NULL },
|
|
};
|
|
#undef FLAGS
|
|
|
|
AVFILTER_DEFINE_CLASS(buffersink);
|
|
AVFILTER_DEFINE_CLASS(abuffersink);
|
|
|
|
const AVFilter ff_vsink_buffer = {
|
|
.name = "buffersink",
|
|
.description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them available to the end of the filter graph."),
|
|
.priv_size = sizeof(BufferSinkContext),
|
|
.priv_class = &buffersink_class,
|
|
.init = common_init,
|
|
.uninit = uninit,
|
|
.activate = activate,
|
|
FILTER_INPUTS(ff_video_default_filterpad),
|
|
.outputs = NULL,
|
|
FILTER_QUERY_FUNC(vsink_query_formats),
|
|
};
|
|
|
|
static const AVFilterPad inputs_audio[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_AUDIO,
|
|
.config_props = config_input_audio,
|
|
},
|
|
};
|
|
|
|
const AVFilter ff_asink_abuffer = {
|
|
.name = "abuffersink",
|
|
.description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them available to the end of the filter graph."),
|
|
.priv_class = &abuffersink_class,
|
|
.priv_size = sizeof(BufferSinkContext),
|
|
.init = common_init,
|
|
.uninit = uninit,
|
|
.activate = activate,
|
|
FILTER_INPUTS(inputs_audio),
|
|
.outputs = NULL,
|
|
FILTER_QUERY_FUNC(asink_query_formats),
|
|
};
|