It should provide a quicker guess for elementary streams provided
by http.
---
libavformat/avformat.h | 10 ++++++++++
libavformat/format.c | 34 ++++++++++++++++++++++------------
libavformat/version.h | 4 ++++
3 files changed, 36 insertions(+), 12 deletions(-)
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 2bc1df9..31ae84b 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -391,6 +391,9 @@ typedef struct AVProbeData {
const char *filename;
unsigned char *buf; /**< Buffer must have AVPROBE_PADDING_SIZE of extra
allocated bytes filled with zero. */
int buf_size; /**< Size of buf except extra allocated bytes */
+#ifdef FF_API_PROBE_MIME
+ uint8_t *mime_type; /**< mime_type, when known. */
+#endif
} AVProbeData;
#define AVPROBE_SCORE_EXTENSION 50 ///< score for file extension
@@ -535,6 +538,13 @@ typedef struct AVInputFormat {
const AVClass *priv_class; ///< AVClass for the private context
+ /**
+ * Comma-separated list of mime types.
+ * It is used check for matching mime types while probing.
+ * @see av_probe_input_format2
+ */
+ const char *mime_type;
+
/*****************************************************************
* No fields below this line are part of the public API. They
* may not be used outside of libavformat and can be changed and
diff --git a/libavformat/format.c b/libavformat/format.c
index 95c06ff..ce4c6b9 100644
--- a/libavformat/format.c
+++ b/libavformat/format.c
@@ -20,6 +20,7 @@
*/
#include "libavutil/avstring.h"
+#include "libavutil/opt.h"
#include "avio_internal.h"
#include "avformat.h"
@@ -212,6 +213,10 @@ AVInputFormat *av_probe_input_format2(AVProbeData *pd, int
is_opened,
if (av_match_ext(lpd.filename, fmt1->extensions))
score = AVPROBE_SCORE_EXTENSION;
}
+#ifdef FF_API_PROBE_MIME
+ if (match_name(lpd.mime_type, fmt1->mime_type))
+ score = FFMAX(score, AVPROBE_SCORE_EXTENSION);
+#endif
if (score > *score_max) {
*score_max = score;
fmt = fmt1;
@@ -269,7 +274,10 @@ int av_probe_input_buffer(AVIOContext *pb, AVInputFormat
**fmt,
return AVERROR(EINVAL);
avio_skip(pb, offset);
max_probe_size -= offset;
-
+#ifdef FF_API_PROBE_MIME
+ if (pb->av_class)
+ av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &pd.mime_type);
+#endif
for (probe_size = PROBE_BUF_MIN; probe_size <= max_probe_size && !*fmt;
probe_size = FFMIN(probe_size << 1,
FFMAX(max_probe_size, probe_size + 1))) {
@@ -277,14 +285,13 @@ int av_probe_input_buffer(AVIOContext *pb, AVInputFormat
**fmt,
/* Read probe data. */
if ((ret = av_reallocp(&buf, probe_size + AVPROBE_PADDING_SIZE)) < 0)
- return ret;
+ goto fail;
if ((ret = avio_read(pb, buf + pd.buf_size,
probe_size - pd.buf_size)) < 0) {
/* Fail if error was not end of file, otherwise, lower score. */
- if (ret != AVERROR_EOF) {
- av_free(buf);
- return ret;
- }
+ if (ret != AVERROR_EOF)
+ goto fail;
+
score = 0;
ret = 0; /* error was end of file, nothing read */
}
@@ -307,14 +314,17 @@ int av_probe_input_buffer(AVIOContext *pb, AVInputFormat
**fmt,
}
}
- if (!*fmt) {
- av_free(buf);
- return AVERROR_INVALIDDATA;
- }
+ if (!*fmt)
+ ret = AVERROR_INVALIDDATA;
+fail:
/* Rewind. Reuse probe buffer to avoid seeking. */
- if ((ret = ffio_rewind_with_probe_data(pb, buf, pd.buf_size)) < 0)
+ if (ret < 0 ||
+ (ret = ffio_rewind_with_probe_data(pb, buf, pd.buf_size)) < 0) {
av_free(buf);
-
+ }
+#ifdef FF_API_PROBE_MIME
+ av_free(pd.mime_type);
+#endif
return ret;
}
diff --git a/libavformat/version.h b/libavformat/version.h
index 1a017ce..6e9ce67 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -61,4 +61,8 @@
#define FF_API_LAVF_CODEC_TB (LIBAVFORMAT_VERSION_MAJOR < 57)
#endif
+#ifndef FF_API_PROBE_MIME
+#define FF_API_PROBE_MIME (LIBAVFORMAT_VERSION_MAJOR > 55)
+#endif
+
#endif /* AVFORMAT_VERSION_H */
--
1.9.0
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