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lavf/concatdec: support per-file options

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This commit is contained in:
Nicolas George 2021-07-28 12:34:19 +02:00
parent 46fb395952
commit 0210c8fee2
2 changed files with 38 additions and 1 deletions
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4
doc/demuxers.texi
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@ -151,6 +151,10 @@ Metadata of the packets of the file. The specified metadata will be set for
each file packet. You can specify this directive multiple times to add multiple
metadata entries.
@item @code{option @var{key} @var{value}}
Option to access, open and probe the file.
Can be present multiple times.
@item @code{stream}
Introduce a stream in the virtual file.
All subsequent stream-related directives apply to the last introduced

35
libavformat/concatdec.c
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@ -52,6 +52,7 @@ typedef struct {
int64_t inpoint;
int64_t outpoint;
AVDictionary *metadata;
AVDictionary *options;
int nb_streams;
} ConcatFile;
@ -330,6 +331,7 @@ static int open_file(AVFormatContext *avf, unsigned fileno)
{
ConcatContext *cat = avf->priv_data;
ConcatFile *file = &cat->files[fileno];
AVDictionary *options = NULL;
int ret;
if (cat->avf)
@ -345,12 +347,22 @@ static int open_file(AVFormatContext *avf, unsigned fileno)
if ((ret = ff_copy_whiteblacklists(cat->avf, avf)) < 0)
return ret;
if ((ret = avformat_open_input(&cat->avf, file->url, NULL, NULL)) < 0 ||
ret = av_dict_copy(&options, file->options, 0);
if (ret < 0)
return ret;
if ((ret = avformat_open_input(&cat->avf, file->url, NULL, &options)) < 0 ||
(ret = avformat_find_stream_info(cat->avf, NULL)) < 0) {
av_log(avf, AV_LOG_ERROR, "Impossible to open '%s'\n", file->url);
av_dict_free(&options);
avformat_close_input(&cat->avf);
return ret;
}
if (options) {
av_log(avf, AV_LOG_WARNING, "Unused options for '%s'.\n", file->url);
/* TODO log unused options once we have a proper string API */
av_dict_free(&options);
}
cat->cur_file = file;
file->start_time = !fileno ? 0 :
cat->files[fileno - 1].start_time +
@ -387,6 +399,7 @@ static int concat_read_close(AVFormatContext *avf)
}
av_freep(&cat->files[i].streams);
av_dict_free(&cat->files[i].metadata);
av_dict_free(&cat->files[i].options);
}
if (cat->avf)
avformat_close_input(&cat->avf);
@ -458,6 +471,26 @@ static int concat_read_header(AVFormatContext *avf)
FAIL(AVERROR_INVALIDDATA);
}
av_freep(&metadata);
} else if (!strcmp(keyword, "option")) {
char *key, *val;
if (cat->safe) {
av_log(avf, AV_LOG_ERROR, "Options not permitted in safe mode.\n");
FAIL(AVERROR(EPERM));
}
if (!file) {
av_log(avf, AV_LOG_ERROR, "Line %d: %s without file\n",
line, keyword);
FAIL(AVERROR_INVALIDDATA);
}
if (!(key = av_get_token((const char **)&cursor, SPACE_CHARS)) ||
!(val = av_get_token((const char **)&cursor, SPACE_CHARS))) {
av_freep(&key);
FAIL(AVERROR(ENOMEM));
}
ret = av_dict_set(&file->options, key, val,
AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
if (ret < 0)
FAIL(ret);
} else if (!strcmp(keyword, "stream")) {
if (!avformat_new_stream(avf, NULL))
FAIL(AVERROR(ENOMEM));