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fftools/ffmpeg: stop setting InputStream fields from muxing/filtering code 

Set InputStream.decoding_needed/discard/etc. only from
ist_{filter,output},add() functions. Reduces the knowledge of
InputStream internals in muxing/filtering code.
This commit is contained in:
Anton Khirnov 2023-04-11 13:05:46 +02:00
parent ae071c9e39
commit ff92ecad2f
4 changed files with 15 additions and 14 deletions
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2
fftools/ffmpeg.h
View File

@ -880,7 +880,7 @@ void ifile_close(InputFile **f);
int ifile_get_packet(InputFile *f, AVPacket **pkt);
void ist_output_add(InputStream *ist, OutputStream *ost);
void ist_filter_add(InputStream *ist, InputFilter *ifilter);
void ist_filter_add(InputStream *ist, InputFilter *ifilter, int is_simple);
/* iterate over all input streams in all input files;
* pass NULL to start iteration */

13
fftools/ffmpeg_demux.c
View File

@ -561,14 +561,25 @@ void ifile_close(InputFile **pf)
av_freep(pf);
}
static void ist_use(InputStream *ist, int decoding_needed)
{
ist->discard = 0;
ist->st->discard = ist->user_set_discard;
ist->decoding_needed |= decoding_needed;
}
void ist_output_add(InputStream *ist, OutputStream *ost)
{
ist_use(ist, ost->enc ? DECODING_FOR_OST : 0);
GROW_ARRAY(ist->outputs, ist->nb_outputs);
ist->outputs[ist->nb_outputs - 1] = ost;
}
void ist_filter_add(InputStream *ist, InputFilter *ifilter)
void ist_filter_add(InputStream *ist, InputFilter *ifilter, int is_simple)
{
ist_use(ist, is_simple ? DECODING_FOR_OST : DECODING_FOR_FILTER);
GROW_ARRAY(ist->filters, ist->nb_filters);
ist->filters[ist->nb_filters - 1] = ifilter;
}

8
fftools/ffmpeg_filter.c
View File

@ -215,7 +215,7 @@ int init_simple_filtergraph(InputStream *ist, OutputStream *ost)
GROW_ARRAY(filtergraphs, nb_filtergraphs);
filtergraphs[nb_filtergraphs - 1] = fg;
ist_filter_add(ist, ifilter);
ist_filter_add(ist, ifilter, 1);
return 0;
}
@ -303,10 +303,6 @@ static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
}
av_assert0(ist);
ist->discard = 0;
ist->decoding_needed |= DECODING_FOR_FILTER;
ist->st->discard = AVDISCARD_NONE;
ifilter = ALLOC_ARRAY_ELEM(fg->inputs, fg->nb_inputs);
ifilter->ist = ist;
ifilter->graph = fg;
@ -318,7 +314,7 @@ static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
if (!ifilter->frame_queue)
report_and_exit(AVERROR(ENOMEM));
ist_filter_add(ist, ifilter);
ist_filter_add(ist, ifilter, 0);
}
static int read_binary(const char *path, uint8_t **data, int *len)

6
fftools/ffmpeg_mux_init.c
View File

@ -1218,12 +1218,6 @@ static OutputStream *ost_add(Muxer *mux, const OptionsContext *o,
}
if (ost->ist) {
ost->ist->discard = 0;
ost->ist->st->discard = ost->ist->user_set_discard;
if (ost->enc)
ost->ist->decoding_needed |= DECODING_FOR_OST;
if (ost->enc &&
(type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO)) {
ret = init_simple_filtergraph(ost->ist, ost);