diff options
Diffstat (limited to 'tools/uncoded_frame.c')
| -rw-r--r-- | tools/uncoded_frame.c | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/tools/uncoded_frame.c b/tools/uncoded_frame.c new file mode 100644 index 0000000000..53e71eacbf --- /dev/null +++ b/tools/uncoded_frame.c @@ -0,0 +1,279 @@ +#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; + AVFilterLink *link; +} 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; + st->link = st->sink->inputs[0]; + 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; + + av_register_all(); + avdevice_register_all(); + avfilter_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->filename, 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->codec->codec_type = st->link->type; + st->stream->time_base = st->stream->codec->time_base = + st->link->time_base; + switch (st->link->type) { + case AVMEDIA_TYPE_VIDEO: + st->stream->codec->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->codec->width = st->link->w; + st->stream->codec->height = st->link->h; + st->stream->codec->sample_aspect_ratio = st->link->sample_aspect_ratio; + st->stream->codec->pix_fmt = st->link->format; + break; + case AVMEDIA_TYPE_AUDIO: + st->stream->codec->channel_layout = st->link->channel_layout; + st->stream->codec->channels = avfilter_link_get_channels(st->link); + st->stream->codec->sample_rate = st->link->sample_rate; + st->stream->codec->sample_fmt = st->link->format; + st->stream->codec->codec_id = + av_get_pcm_codec(st->stream->codec->sample_fmt, -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, + st->link ->time_base, + st->stream->time_base); + ret = av_interleaved_write_uncoded_frame(st->mux, + st->stream->index, + frame); + frame = NULL; + if (ret < 0) { + av_log(st->stream->codec, 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_close(st->mux->pb); + avformat_free_context(st->mux); + } + } + } + av_freep(&streams); + return ret < 0; +} |