It should provide a quicker guess for elementary streams provided by http. ---
Most issues should be fixed. 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 02ee6ba..4849f72 100644 --- a/libavformat/avformat.h +++ b/libavformat/avformat.h @@ -389,6 +389,9 @@ 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 @@ -533,6 +536,13 @@ 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 85ff700..69a0e38 100644 --- a/libavformat/version.h +++ b/libavformat/version.h @@ -52,4 +52,8 @@ #define FF_API_REFERENCE_DTS (LIBAVFORMAT_VERSION_MAJOR < 56) #endif +#ifndef FF_API_PROBE_MIME +#define FF_API_PROBE_MIME (LIBAVFORMAT_VERSION_MAJOR > 55) +#endif + #endif /* AVFORMAT_VERSION_H */ -- 1.9.0 _______________________________________________ libav-devel mailing list libav-devel@libav.org https://lists.libav.org/mailman/listinfo/libav-devel