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-rw-r--r--cmdutils.c60
-rw-r--r--doc/APIchanges3
-rw-r--r--libavformat/avformat.h16
-rw-r--r--libavformat/utils.c61
-rw-r--r--libavformat/version.h4
5 files changed, 86 insertions, 58 deletions
diff --git a/cmdutils.c b/cmdutils.c
index 5fdb1a6ba2..295d95608e 100644
--- a/cmdutils.c
+++ b/cmdutils.c
@@ -1088,62 +1088,10 @@ FILE *get_preset_file(char *filename, size_t filename_size,
int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
{
- if (*spec <= '9' && *spec >= '0') /* opt:index */
- return strtol(spec, NULL, 0) == st->index;
- else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
- *spec == 't') { /* opt:[vasdt] */
- enum AVMediaType type;
-
- switch (*spec++) {
- case 'v': type = AVMEDIA_TYPE_VIDEO; break;
- case 'a': type = AVMEDIA_TYPE_AUDIO; break;
- case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
- case 'd': type = AVMEDIA_TYPE_DATA; break;
- case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
- default: av_assert0(0);
- }
- if (type != st->codec->codec_type)
- return 0;
- if (*spec++ == ':') { /* possibly followed by :index */
- int i, index = strtol(spec, NULL, 0);
- for (i = 0; i < s->nb_streams; i++)
- if (s->streams[i]->codec->codec_type == type && index-- == 0)
- return i == st->index;
- return 0;
- }
- return 1;
- } else if (*spec == 'p' && *(spec + 1) == ':') {
- int prog_id, i, j;
- char *endptr;
- spec += 2;
- prog_id = strtol(spec, &endptr, 0);
- for (i = 0; i < s->nb_programs; i++) {
- if (s->programs[i]->id != prog_id)
- continue;
-
- if (*endptr++ == ':') {
- int stream_idx = strtol(endptr, NULL, 0);
- return stream_idx >= 0 &&
- stream_idx < s->programs[i]->nb_stream_indexes &&
- st->index == s->programs[i]->stream_index[stream_idx];
- }
-
- for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
- if (st->index == s->programs[i]->stream_index[j])
- return 1;
- }
- return 0;
- } else if (*spec == '#') {
- int sid;
- char *endptr;
- sid = strtol(spec + 1, &endptr, 0);
- if (!*endptr)
- return st->id == sid;
- } else if (!*spec) /* empty specifier, matches everything */
- return 1;
-
- av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
- return AVERROR(EINVAL);
+ int ret = avformat_match_stream_specifier(s, st, spec);
+ if (ret < 0)
+ av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
+ return ret;
}
AVDictionary *filter_codec_opts(AVDictionary *opts, enum CodecID codec_id,
diff --git a/doc/APIchanges b/doc/APIchanges
index a2f4e03d5e..20bab5a241 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -15,6 +15,9 @@ libavutil: 2011-04-18
API changes, most recent first:
+2012-07-20 - xxxxxxx - lavf 54.18.100
+ Add avformat_match_stream_specifier() function.
+
2012-07-14 - xxxxxxx - lavc 54.38.100 - avcodec.h
Add metadata to AVFrame, and the accessor functions
av_frame_get_metadata() and av_frame_set_metadata().
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 3bbc68387d..1837733097 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1972,6 +1972,22 @@ const struct AVCodecTag *avformat_get_riff_audio_tags(void);
AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame);
/**
+ * Check if the stream st contained in s is matched by the stream specifier
+ * spec.
+ *
+ * See the "stream specifiers" chapter in the documentation for the syntax
+ * of spec.
+ *
+ * @return >0 if st is matched by spec;
+ * 0 if st is not matched by spec;
+ * AVERROR code if spec is invalid
+ *
+ * @note A stream specifier can match several streams in the format.
+ */
+int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
+ const char *spec);
+
+/**
* @}
*/
diff --git a/libavformat/utils.c b/libavformat/utils.c
index cfa9e82f3f..c437866d68 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -4509,3 +4509,64 @@ AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *strea
else
return frame_sample_aspect_ratio;
}
+
+int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
+ const char *spec)
+{
+ if (*spec <= '9' && *spec >= '0') /* opt:index */
+ return strtol(spec, NULL, 0) == st->index;
+ else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
+ *spec == 't') { /* opt:[vasdt] */
+ enum AVMediaType type;
+
+ switch (*spec++) {
+ case 'v': type = AVMEDIA_TYPE_VIDEO; break;
+ case 'a': type = AVMEDIA_TYPE_AUDIO; break;
+ case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
+ case 'd': type = AVMEDIA_TYPE_DATA; break;
+ case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
+ default: av_assert0(0);
+ }
+ if (type != st->codec->codec_type)
+ return 0;
+ if (*spec++ == ':') { /* possibly followed by :index */
+ int i, index = strtol(spec, NULL, 0);
+ for (i = 0; i < s->nb_streams; i++)
+ if (s->streams[i]->codec->codec_type == type && index-- == 0)
+ return i == st->index;
+ return 0;
+ }
+ return 1;
+ } else if (*spec == 'p' && *(spec + 1) == ':') {
+ int prog_id, i, j;
+ char *endptr;
+ spec += 2;
+ prog_id = strtol(spec, &endptr, 0);
+ for (i = 0; i < s->nb_programs; i++) {
+ if (s->programs[i]->id != prog_id)
+ continue;
+
+ if (*endptr++ == ':') {
+ int stream_idx = strtol(endptr, NULL, 0);
+ return stream_idx >= 0 &&
+ stream_idx < s->programs[i]->nb_stream_indexes &&
+ st->index == s->programs[i]->stream_index[stream_idx];
+ }
+
+ for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
+ if (st->index == s->programs[i]->stream_index[j])
+ return 1;
+ }
+ return 0;
+ } else if (*spec == '#') {
+ int sid;
+ char *endptr;
+ sid = strtol(spec + 1, &endptr, 0);
+ if (!*endptr)
+ return st->id == sid;
+ } else if (!*spec) /* empty specifier, matches everything */
+ return 1;
+
+ av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
+ return AVERROR(EINVAL);
+}
diff --git a/libavformat/version.h b/libavformat/version.h
index 234c7a4bdf..0b977a401d 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -30,8 +30,8 @@
#include "libavutil/avutil.h"
#define LIBAVFORMAT_VERSION_MAJOR 54
-#define LIBAVFORMAT_VERSION_MINOR 17
-#define LIBAVFORMAT_VERSION_MICRO 101
+#define LIBAVFORMAT_VERSION_MINOR 18
+#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-28 07:57:30 +0000