274 lines
9.4 KiB
C
274 lines
9.4 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "libavutil/avassert.h"
|
|
#include "libavdevice/avdevice.h"
|
|
#include "libavfilter/avfilter.h"
|
|
#include "libavfilter/buffersink.h"
|
|
#include "libavformat/avformat.h"
|
|
|
|
typedef struct {
|
|
AVFormatContext *mux;
|
|
AVStream *stream;
|
|
AVFilterContext *sink;
|
|
} Stream;
|
|
|
|
static int create_sink(Stream *st, AVFilterGraph *graph,
|
|
AVFilterContext *f, int idx)
|
|
{
|
|
enum AVMediaType type = avfilter_pad_get_type(f->output_pads, idx);
|
|
const char *sink_name;
|
|
int ret;
|
|
|
|
switch (type) {
|
|
case AVMEDIA_TYPE_VIDEO: sink_name = "buffersink"; break;
|
|
case AVMEDIA_TYPE_AUDIO: sink_name = "abuffersink"; break;
|
|
default:
|
|
av_log(NULL, AV_LOG_ERROR, "Stream type not supported\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
ret = avfilter_graph_create_filter(&st->sink,
|
|
avfilter_get_by_name(sink_name),
|
|
NULL, NULL, NULL, graph);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = avfilter_link(f, idx, st->sink, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
char *in_graph_desc, **out_dev_name;
|
|
int nb_out_dev = 0, nb_streams = 0;
|
|
AVFilterGraph *in_graph = NULL;
|
|
Stream *streams = NULL, *st;
|
|
AVFrame *frame = NULL;
|
|
int i, j, run = 1, ret;
|
|
|
|
//av_log_set_level(AV_LOG_DEBUG);
|
|
|
|
if (argc < 3) {
|
|
av_log(NULL, AV_LOG_ERROR,
|
|
"Usage: %s filter_graph dev:out [dev2:out2...]\n\n"
|
|
"Examples:\n"
|
|
"%s movie=file.nut:s=v+a xv:- alsa:default\n"
|
|
"%s movie=file.nut:s=v+a uncodedframecrc:pipe:0\n",
|
|
argv[0], argv[0], argv[0]);
|
|
exit(1);
|
|
}
|
|
in_graph_desc = argv[1];
|
|
out_dev_name = argv + 2;
|
|
nb_out_dev = argc - 2;
|
|
|
|
avdevice_register_all();
|
|
|
|
/* Create input graph */
|
|
if (!(in_graph = avfilter_graph_alloc())) {
|
|
ret = AVERROR(ENOMEM);
|
|
av_log(NULL, AV_LOG_ERROR, "Unable to alloc graph graph: %s\n",
|
|
av_err2str(ret));
|
|
goto fail;
|
|
}
|
|
ret = avfilter_graph_parse_ptr(in_graph, in_graph_desc, NULL, NULL, NULL);
|
|
if (ret < 0) {
|
|
av_log(NULL, AV_LOG_ERROR, "Unable to parse graph: %s\n",
|
|
av_err2str(ret));
|
|
goto fail;
|
|
}
|
|
nb_streams = 0;
|
|
for (i = 0; i < in_graph->nb_filters; i++) {
|
|
AVFilterContext *f = in_graph->filters[i];
|
|
for (j = 0; j < f->nb_inputs; j++) {
|
|
if (!f->inputs[j]) {
|
|
av_log(NULL, AV_LOG_ERROR, "Graph has unconnected inputs\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto fail;
|
|
}
|
|
}
|
|
for (j = 0; j < f->nb_outputs; j++)
|
|
if (!f->outputs[j])
|
|
nb_streams++;
|
|
}
|
|
if (!nb_streams) {
|
|
av_log(NULL, AV_LOG_ERROR, "Graph has no output stream\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto fail;
|
|
}
|
|
if (nb_out_dev != 1 && nb_out_dev != nb_streams) {
|
|
av_log(NULL, AV_LOG_ERROR,
|
|
"Graph has %d output streams, %d devices given\n",
|
|
nb_streams, nb_out_dev);
|
|
ret = AVERROR(EINVAL);
|
|
goto fail;
|
|
}
|
|
|
|
if (!(streams = av_calloc(nb_streams, sizeof(*streams)))) {
|
|
ret = AVERROR(ENOMEM);
|
|
av_log(NULL, AV_LOG_ERROR, "Could not allocate streams\n");
|
|
}
|
|
st = streams;
|
|
for (i = 0; i < in_graph->nb_filters; i++) {
|
|
AVFilterContext *f = in_graph->filters[i];
|
|
for (j = 0; j < f->nb_outputs; j++) {
|
|
if (!f->outputs[j]) {
|
|
if ((ret = create_sink(st++, in_graph, f, j)) < 0)
|
|
goto fail;
|
|
}
|
|
}
|
|
}
|
|
av_assert0(st - streams == nb_streams);
|
|
if ((ret = avfilter_graph_config(in_graph, NULL)) < 0) {
|
|
av_log(NULL, AV_LOG_ERROR, "Failed to configure graph\n");
|
|
goto fail;
|
|
}
|
|
|
|
/* Create output devices */
|
|
for (i = 0; i < nb_out_dev; i++) {
|
|
char *fmt = NULL, *dev = out_dev_name[i];
|
|
st = &streams[i];
|
|
if ((dev = strchr(dev, ':'))) {
|
|
*(dev++) = 0;
|
|
fmt = out_dev_name[i];
|
|
}
|
|
ret = avformat_alloc_output_context2(&st->mux, NULL, fmt, dev);
|
|
if (ret < 0) {
|
|
av_log(NULL, AV_LOG_ERROR, "Failed to allocate output: %s\n",
|
|
av_err2str(ret));
|
|
goto fail;
|
|
}
|
|
if (!(st->mux->oformat->flags & AVFMT_NOFILE)) {
|
|
ret = avio_open2(&st->mux->pb, st->mux->url, AVIO_FLAG_WRITE,
|
|
NULL, NULL);
|
|
if (ret < 0) {
|
|
av_log(st->mux, AV_LOG_ERROR, "Failed to init output: %s\n",
|
|
av_err2str(ret));
|
|
goto fail;
|
|
}
|
|
}
|
|
}
|
|
for (; i < nb_streams; i++)
|
|
streams[i].mux = streams[0].mux;
|
|
|
|
/* Create output device streams */
|
|
for (i = 0; i < nb_streams; i++) {
|
|
st = &streams[i];
|
|
if (!(st->stream = avformat_new_stream(st->mux, NULL))) {
|
|
ret = AVERROR(ENOMEM);
|
|
av_log(NULL, AV_LOG_ERROR, "Failed to create output stream\n");
|
|
goto fail;
|
|
}
|
|
st->stream->codecpar->codec_type = av_buffersink_get_type(st->sink);
|
|
st->stream->time_base = av_buffersink_get_time_base(st->sink);
|
|
switch (av_buffersink_get_type(st->sink)) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
st->stream->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO;
|
|
st->stream->avg_frame_rate =
|
|
st->stream-> r_frame_rate = av_buffersink_get_frame_rate(st->sink);
|
|
st->stream->codecpar->width = av_buffersink_get_w(st->sink);
|
|
st->stream->codecpar->height = av_buffersink_get_h(st->sink);
|
|
st->stream->codecpar->sample_aspect_ratio = av_buffersink_get_sample_aspect_ratio(st->sink);
|
|
st->stream->codecpar->format = av_buffersink_get_format(st->sink);
|
|
break;
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
st->stream->codecpar->channel_layout = av_buffersink_get_channel_layout(st->sink);
|
|
st->stream->codecpar->channels = av_buffersink_get_channels(st->sink);
|
|
st->stream->codecpar->sample_rate = av_buffersink_get_sample_rate(st->sink);
|
|
st->stream->codecpar->format = av_buffersink_get_format(st->sink);
|
|
st->stream->codecpar->codec_id = av_get_pcm_codec(st->stream->codecpar->format, -1);
|
|
break;
|
|
default:
|
|
av_assert0(!"reached");
|
|
}
|
|
}
|
|
|
|
/* Init output devices */
|
|
for (i = 0; i < nb_out_dev; i++) {
|
|
st = &streams[i];
|
|
if ((ret = avformat_write_header(st->mux, NULL)) < 0) {
|
|
av_log(st->mux, AV_LOG_ERROR, "Failed to init output: %s\n",
|
|
av_err2str(ret));
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
/* Check output devices */
|
|
for (i = 0; i < nb_streams; i++) {
|
|
st = &streams[i];
|
|
ret = av_write_uncoded_frame_query(st->mux, st->stream->index);
|
|
if (ret < 0) {
|
|
av_log(st->mux, AV_LOG_ERROR,
|
|
"Uncoded frames not supported on stream #%d: %s\n",
|
|
i, av_err2str(ret));
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
while (run) {
|
|
ret = avfilter_graph_request_oldest(in_graph);
|
|
if (ret < 0) {
|
|
if (ret == AVERROR_EOF) {
|
|
run = 0;
|
|
} else {
|
|
av_log(NULL, AV_LOG_ERROR, "Error filtering: %s\n",
|
|
av_err2str(ret));
|
|
break;
|
|
}
|
|
}
|
|
for (i = 0; i < nb_streams; i++) {
|
|
st = &streams[i];
|
|
while (1) {
|
|
if (!frame && !(frame = av_frame_alloc())) {
|
|
ret = AVERROR(ENOMEM);
|
|
av_log(NULL, AV_LOG_ERROR, "Could not allocate frame\n");
|
|
goto fail;
|
|
}
|
|
ret = av_buffersink_get_frame_flags(st->sink, frame,
|
|
AV_BUFFERSINK_FLAG_NO_REQUEST);
|
|
if (ret < 0) {
|
|
if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
|
|
av_log(NULL, AV_LOG_WARNING, "Error in sink: %s\n",
|
|
av_err2str(ret));
|
|
break;
|
|
}
|
|
if (frame->pts != AV_NOPTS_VALUE)
|
|
frame->pts = av_rescale_q(frame->pts,
|
|
av_buffersink_get_time_base(st->sink),
|
|
st->stream->time_base);
|
|
ret = av_interleaved_write_uncoded_frame(st->mux,
|
|
st->stream->index,
|
|
frame);
|
|
frame = NULL;
|
|
if (ret < 0) {
|
|
av_log(st->mux, AV_LOG_ERROR,
|
|
"Error writing frame: %s\n", av_err2str(ret));
|
|
goto fail;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
ret = 0;
|
|
|
|
for (i = 0; i < nb_out_dev; i++) {
|
|
st = &streams[i];
|
|
av_write_trailer(st->mux);
|
|
}
|
|
|
|
fail:
|
|
av_frame_free(&frame);
|
|
avfilter_graph_free(&in_graph);
|
|
if (streams) {
|
|
for (i = 0; i < nb_out_dev; i++) {
|
|
st = &streams[i];
|
|
if (st->mux) {
|
|
if (st->mux->pb)
|
|
avio_closep(&st->mux->pb);
|
|
avformat_free_context(st->mux);
|
|
}
|
|
}
|
|
}
|
|
av_freep(&streams);
|
|
return ret < 0;
|
|
}
|