diff options
| -rw-r--r-- | doc/demuxers.texi | 11 | ||||
| -rw-r--r-- | doc/filters.texi | 9 | ||||
| -rw-r--r-- | libavformat/img2.h | 1 | ||||
| -rw-r--r-- | libavformat/img2dec.c | 39 | ||||
| -rw-r--r-- | libavformat/version.h | 2 |
5 files changed, 61 insertions, 1 deletions
diff --git a/doc/demuxers.texi b/doc/demuxers.texi index 0d13bdd1b3..2de14b68d3 100644 --- a/doc/demuxers.texi +++ b/doc/demuxers.texi @@ -456,6 +456,17 @@ nanosecond precision. @item video_size Set the video size of the images to read. If not specified the video size is guessed from the first image file in the sequence. +@item export_path_metadata +If set to 1, will add two extra fields to the metadata found in input, making them +also available for other filters (see @var{drawtext} filter for examples). Default +value is 0. The extra fields are described below: +@table @option +@item lavf.image2dec.source_path +Corresponds to the full path to the input file being read. +@item lavf.image2dec.source_basename +Corresponds to the name of the file being read. +@end table + @end table @subsection Examples diff --git a/doc/filters.texi b/doc/filters.texi index 6fb660b05a..a2f862e85f 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -9932,6 +9932,15 @@ drawtext=fontfile=FreeSans.ttf:text=DOG:fontsize=24:x=10:y=20+24-max_glyph_a, drawtext=fontfile=FreeSans.ttf:text=cow:fontsize=24:x=80:y=20+24-max_glyph_a @end example +@item +Plot special @var{lavf.image2dec.source_basename} metadata onto each frame if +such metadata exists. Otherwise, plot the string "NA". Note that image2 demuxer +must have option @option{-export_path_metadata 1} for the special metadata fields +to be available for filters. +@example +drawtext="fontsize=20:fontcolor=white:fontfile=FreeSans.ttf:text='%@{metadata\:lavf.image2dec.source_basename\:NA@}':x=10:y=10" +@end example + @end itemize For more information about libfreetype, check: diff --git a/libavformat/img2.h b/libavformat/img2.h index 0e5b374a6b..5fd8ff77fc 100644 --- a/libavformat/img2.h +++ b/libavformat/img2.h @@ -61,6 +61,7 @@ typedef struct VideoDemuxData { int start_number_range; int frame_size; int ts_from_file; + int export_path_metadata; /**< enabled when set to 1. */ } VideoDemuxData; typedef struct IdStrMap { diff --git a/libavformat/img2dec.c b/libavformat/img2dec.c index f8b4a655a5..37ee1bb746 100644 --- a/libavformat/img2dec.c +++ b/libavformat/img2dec.c @@ -374,6 +374,33 @@ int ff_img_read_header(AVFormatContext *s1) return 0; } +/** + * Add this frame's source path and basename to packet's sidedata + * as a dictionary, so it can be used by filters like 'drawtext'. + */ +static int add_filename_as_pkt_side_data(char *filename, AVPacket *pkt) { + uint8_t* metadata; + int metadata_len; + AVDictionary *d = NULL; + char *packed_metadata = NULL; + + av_dict_set(&d, "lavf.image2dec.source_path", filename, 0); + av_dict_set(&d, "lavf.image2dec.source_basename", av_basename(filename), 0); + + packed_metadata = av_packet_pack_dictionary(d, &metadata_len); + av_dict_free(&d); + if (!packed_metadata) + return AVERROR(ENOMEM); + if (!(metadata = av_packet_new_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, metadata_len))) { + av_freep(&packed_metadata); + return AVERROR(ENOMEM); + } + memcpy(metadata, packed_metadata, metadata_len); + av_freep(&packed_metadata); + + return 0; +} + int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt) { VideoDemuxData *s = s1->priv_data; @@ -486,6 +513,17 @@ int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt) if (s->is_pipe) pkt->pos = avio_tell(f[0]); + /* + * export_path_metadata must be explicitly enabled via + * command line options for path metadata to be exported + * as packet side_data. + */ + if (!s->is_pipe && s->export_path_metadata == 1) { + res = add_filename_as_pkt_side_data(filename, pkt); + if (res < 0) + goto fail; + } + pkt->size = 0; for (i = 0; i < 3; i++) { if (f[i]) { @@ -585,6 +623,7 @@ const AVOption ff_img_options[] = { { "none", "none", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 2, DEC, "ts_type" }, { "sec", "second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 2, DEC, "ts_type" }, { "ns", "nano second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 2, DEC, "ts_type" }, + { "export_path_metadata", "enable metadata containing input path information", OFFSET(export_path_metadata), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, DEC }, \ COMMON_OPTIONS }; diff --git a/libavformat/version.h b/libavformat/version.h index 213b66b45f..43f3811df1 100644 --- a/libavformat/version.h +++ b/libavformat/version.h @@ -33,7 +33,7 @@ // Also please add any ticket numbers that you believe might be affected here #define LIBAVFORMAT_VERSION_MAJOR 58 #define LIBAVFORMAT_VERSION_MINOR 35 -#define LIBAVFORMAT_VERSION_MICRO 101 +#define LIBAVFORMAT_VERSION_MICRO 102 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ LIBAVFORMAT_VERSION_MINOR, \ |