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fftools/ffmpeg_filter: accept a name from its upstream input

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Do not construct the name manually from input file/stream indices.

This is a step towards avoiding the assumption that filtergraph inputs
are always fed by demuxers.
This commit is contained in:
Anton Khirnov 2024-02-13 12:18:27 +01:00
parent 8f592eb35f
commit bd3c1c194b
3 changed files with 14 additions and 13 deletions
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2
fftools/ffmpeg.h
View File

@ -253,6 +253,8 @@ typedef struct OptionsContext {
typedef struct InputFilterOptions {
int64_t trim_start_us;
int64_t trim_end_us;
uint8_t *name;
} InputFilterOptions;
typedef struct InputFilter {

4
fftools/ffmpeg_demux.c
View File

@ -1009,6 +1009,10 @@ int ist_filter_add(InputStream *ist, InputFilter *ifilter, int is_simple,
AV_NOPTS_VALUE : tsoffset;
opts->trim_end_us = d->recording_time;
opts->name = av_strdup(ds->dec_name);
if (!opts->name)
return AVERROR(ENOMEM);
return ds->sch_idx_dec;
}

21
fftools/ffmpeg_filter.c
View File

@ -889,6 +889,7 @@ void fg_free(FilterGraph **pfg)
av_buffer_unref(&ifp->hw_frames_ctx);
av_freep(&ifp->linklabel);
av_freep(&ifp->opts.name);
av_freep(&ifilter->name);
av_freep(&fg->inputs[j]);
}
@ -1475,7 +1476,6 @@ static int configure_input_video_filter(FilterGraph *fg, AVFilterGraph *graph,
const AVFilter *buffer_filt = avfilter_get_by_name("buffer");
const AVPixFmtDescriptor *desc;
InputStream *ist = ifp->ist;
InputFile *f = ist->file;
AVRational fr = ist->framerate;
AVRational sar;
AVBPrint args;
@ -1506,8 +1506,8 @@ static int configure_input_video_filter(FilterGraph *fg, AVFilterGraph *graph,
ifp->color_space, ifp->color_range);
if (fr.num && fr.den)
av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
f->index, ist->index);
snprintf(name, sizeof(name), "graph %d input from stream %s", fg->index,
ifp->opts.name);
if ((ret = avfilter_graph_create_filter(&ifp->filter, buffer_filt, name,
@ -1558,8 +1558,7 @@ static int configure_input_video_filter(FilterGraph *fg, AVFilterGraph *graph,
return ret;
}
snprintf(name, sizeof(name), "trim_in_%d_%d",
f->index, ist->index);
snprintf(name, sizeof(name), "trim_in_%s", ifp->opts.name);
ret = insert_trim(ifp->opts.trim_start_us, ifp->opts.trim_end_us,
&last_filter, &pad_idx, name);
if (ret < 0)
@ -1580,8 +1579,6 @@ static int configure_input_audio_filter(FilterGraph *fg, AVFilterGraph *graph,
InputFilterPriv *ifp = ifp_from_ifilter(ifilter);
AVFilterContext *last_filter;
const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer");
InputStream *ist = ifp->ist;
InputFile *f = ist->file;
AVBPrint args;
char name[255];
int ret, pad_idx = 0;
@ -1599,8 +1596,7 @@ static int configure_input_audio_filter(FilterGraph *fg, AVFilterGraph *graph,
av_channel_layout_describe_bprint(&ifp->ch_layout, &args);
} else
av_bprintf(&args, ":channels=%d", ifp->ch_layout.nb_channels);
snprintf(name, sizeof(name), "graph_%d_in_%d_%d", fg->index,
f->index, ist->index);
snprintf(name, sizeof(name), "graph_%d_in_%s", fg->index, ifp->opts.name);
if ((ret = avfilter_graph_create_filter(&ifp->filter, abuffer_filt,
name, args.str, NULL,
@ -1608,8 +1604,7 @@ static int configure_input_audio_filter(FilterGraph *fg, AVFilterGraph *graph,
return ret;
last_filter = ifp->filter;
snprintf(name, sizeof(name), "trim for input stream %d:%d",
f->index, ist->index);
snprintf(name, sizeof(name), "trim for input stream %s", ifp->opts.name);
ret = insert_trim(ifp->opts.trim_start_us, ifp->opts.trim_end_us,
&last_filter, &pad_idx, name);
if (ret < 0)
@ -2566,8 +2561,8 @@ static int send_eof(FilterGraphThread *fgt, InputFilter *ifilter,
if (ifp->format < 0) {
av_log(NULL, AV_LOG_ERROR,
"Cannot determine format of input stream %d:%d after EOF\n",
ifp->ist->file->index, ifp->ist->index);
"Cannot determine format of input %s after EOF\n",
ifp->opts.name);
return AVERROR_INVALIDDATA;
}
}