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fftools/ffmpeg_mux: add private muxer context

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Move header_written into it, which is not (and should not be) used by
any code outside of ffmpeg_mux.

In the future this context will contain more muxer-private state that
should not be visible to other code.
This commit is contained in:
Anton Khirnov 2021-12-11 14:03:18 +01:00
parent 009ef35d38
commit 6a23be92d2
3 changed files with 32 additions and 6 deletions
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6
fftools/ffmpeg.h
View File

@ -583,9 +583,12 @@ typedef struct OutputStream {
int64_t error[4];
} OutputStream;
typedef struct Muxer Muxer;
typedef struct OutputFile {
int index;
Muxer *mux;
const AVOutputFormat *format;
AVFormatContext *ctx;
@ -596,8 +599,6 @@ typedef struct OutputFile {
uint64_t limit_filesize; /* filesize limit expressed in bytes */
int shortest;
int header_written;
} OutputFile;
extern InputStream **input_streams;
@ -696,6 +697,7 @@ int hw_device_setup_for_filter(FilterGraph *fg);
int hwaccel_decode_init(AVCodecContext *avctx);
int of_muxer_init(OutputFile *of);
/* open the muxer when all the streams are initialized */
int of_check_init(OutputFile *of);
int of_write_trailer(OutputFile *of);

26
fftools/ffmpeg_mux.c
View File

@ -32,6 +32,10 @@
#include "libavformat/avformat.h"
#include "libavformat/avio.h"
struct Muxer {
int header_written;
};
static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
{
int i;
@ -64,7 +68,7 @@ void of_write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost,
ost->frame_number++;
}
if (!of->header_written) {
if (!of->mux->header_written) {
AVPacket *tmp_pkt;
/* the muxer is not initialized yet, buffer the packet */
if (!av_fifo_can_write(ost->muxing_queue)) {
@ -182,7 +186,7 @@ static int print_sdp(void)
AVFormatContext **avc;
for (i = 0; i < nb_output_files; i++) {
if (!output_files[i]->header_written)
if (!output_files[i]->mux->header_written)
return 0;
}
@ -246,7 +250,7 @@ int of_check_init(OutputFile *of)
return ret;
}
//assert_avoptions(of->opts);
of->header_written = 1;
of->mux->header_written = 1;
av_dump_format(of->ctx, of->index, of->ctx->url, 1);
nb_output_dumped++;
@ -282,7 +286,7 @@ int of_write_trailer(OutputFile *of)
{
int ret;
if (!of->header_written) {
if (!of->mux->header_written) {
av_log(NULL, AV_LOG_ERROR,
"Nothing was written into output file %d (%s), because "
"at least one of its streams received no packets.\n",
@ -313,5 +317,19 @@ void of_close(OutputFile **pof)
avformat_free_context(s);
av_dict_free(&of->opts);
av_freep(&of->mux);
av_freep(pof);
}
int of_muxer_init(OutputFile *of)
{
Muxer *mux = av_mallocz(sizeof(*mux));
if (!mux)
return AVERROR(ENOMEM);
of->mux = mux;
return 0;
}

6
fftools/ffmpeg_opt.c
View File

@ -3006,6 +3006,12 @@ loop_end:
exit_program(1);
}
err = of_muxer_init(of);
if (err < 0) {
av_log(NULL, AV_LOG_FATAL, "Error initializing internal muxing state\n");
exit_program(1);
}
return 0;
}