diff options
author | Michael Niedermayer <michaelni@gmx.at> | 2011-07-14 04:22:48 +0400 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2011-07-14 04:24:10 +0400 |
commit | 80e4fe4063001d0cf468d5f4c7c02ba5b04484b7 (patch) | |
tree | ab237b4967339905110c59f6a118bfda9a5a5433 /libavformat/wav.c | |
parent | 6b61920ab76dc6d85ef462909951923935dd643f (diff) | |
parent | b5849f77095439e994b11c25e6063d443b36c228 (diff) |
Merge commit 'b5849f77095439e994b11c25e6063d443b36c228'
* commit 'b5849f77095439e994b11c25e6063d443b36c228': (21 commits)
ac3enc: merge AC3MDCTContext with AC3EncodeContext.
ac3enc: prefer passing AC3EncodeContext rather than AVCodecContext
ac3enc: fix memleak
mpeg1video: add CODEC_CAP_SLICE_THREADS.
lavf: fix segfault in av_open_input_stream()
mpegtsenc: set Random Access indicator on keyframe start packets
lavf: Cleanup try_decode_frame() logic.
Replace some gotos that lead to single return statements by direct return.
build: move tests/seek_test.c to libavformat and reuse generic build rules
mxfenc: include needed header for ff_iso8601_to_unix_time() prototype
Add a check for strptime().
lavf: factor out conversion of ISO8601 string to unix time
wav: parse 'bext' metadata
wav: keep parsing until EOF if the input is seekable and we know the size of the data tag
wav: Refactor the tag checking into a switch statement
wav: make sure neither data_size nor sample_count is negative.
wav: refactor the 'fmt ' tag search and parsing.
wav: add an option for writing BEXT chunk
ffmpeg: get rid of a pointless limit on number of streams.
ffmpeg: remove an unused define.
...
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavformat/wav.c')
-rw-r--r-- | libavformat/wav.c | 87 |
1 files changed, 85 insertions, 2 deletions
diff --git a/libavformat/wav.c b/libavformat/wav.c index f09e676ce0..22419ccb4a 100644 --- a/libavformat/wav.c +++ b/libavformat/wav.c @@ -23,23 +23,85 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ +#include "libavutil/avassert.h" +#include "libavutil/dict.h" +#include "libavutil/log.h" #include "libavutil/mathematics.h" +#include "libavutil/opt.h" #include "avformat.h" #include "avio_internal.h" #include "pcm.h" #include "riff.h" +#include "avio.h" +#include "avio_internal.h" #include "metadata.h" typedef struct { + const AVClass *class; int64_t data; int64_t data_end; int64_t minpts; int64_t maxpts; int last_duration; int w64; + int write_bext; } WAVContext; #if CONFIG_WAV_MUXER +static inline void bwf_write_bext_string(AVFormatContext *s, const char *key, int maxlen) +{ + AVDictionaryEntry *tag; + int len = 0; + + if (tag = av_dict_get(s->metadata, key, NULL, 0)) { + len = strlen(tag->value); + len = FFMIN(len, maxlen); + avio_write(s->pb, tag->value, len); + } + + ffio_fill(s->pb, 0, maxlen - len); +} + +static void bwf_write_bext_chunk(AVFormatContext *s) +{ + AVDictionaryEntry *tmp_tag; + uint64_t time_reference = 0; + int64_t bext = ff_start_tag(s->pb, "bext"); + + bwf_write_bext_string(s, "description", 256); + bwf_write_bext_string(s, "originator", 32); + bwf_write_bext_string(s, "originator_reference", 32); + bwf_write_bext_string(s, "origination_date", 10); + bwf_write_bext_string(s, "origination_time", 8); + + if (tmp_tag = av_dict_get(s->metadata, "time_reference", NULL, 0)) + time_reference = strtoll(tmp_tag->value, NULL, 10); + avio_wl64(s->pb, time_reference); + avio_wl16(s->pb, 1); // set version to 1 + + if (tmp_tag = av_dict_get(s->metadata, "umid", NULL, 0)) { + unsigned char umidpart_str[17] = {0}; + int i; + uint64_t umidpart; + int len = strlen(tmp_tag->value+2); + + for (i = 0; i < len/16; i++) { + memcpy(umidpart_str, tmp_tag->value + 2 + (i*16), 16); + umidpart = strtoll(umidpart_str, NULL, 16); + avio_wb64(s->pb, umidpart); + } + ffio_fill(s->pb, 0, 64 - i*8); + } else + ffio_fill(s->pb, 0, 64); // zero UMID + + ffio_fill(s->pb, 0, 190); // Reserved + + if (tmp_tag = av_dict_get(s->metadata, "coding_history", NULL, 0)) + avio_put_str(s->pb, tmp_tag->value); + + ff_end_tag(s->pb, bext); +} + static int wav_write_header(AVFormatContext *s) { WAVContext *wav = s->priv_data; @@ -66,6 +128,9 @@ static int wav_write_header(AVFormatContext *s) ff_end_tag(pb, fact); } + if (wav->write_bext) + bwf_write_bext_chunk(s); + av_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate); wav->maxpts = wav->last_duration = 0; wav->minpts = INT64_MAX; @@ -126,6 +191,20 @@ static int wav_write_trailer(AVFormatContext *s) return 0; } +#define OFFSET(x) offsetof(WAVContext, x) +#define ENC AV_OPT_FLAG_ENCODING_PARAM +static const AVOption options[] = { + { "write_bext", "Write BEXT chunk.", OFFSET(write_bext), FF_OPT_TYPE_INT, { 0 }, 0, 1, ENC }, + { NULL }, +}; + +static const AVClass wav_muxer_class = { + .class_name = "WAV muxer", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, +}; + AVOutputFormat ff_wav_muxer = { "wav", NULL_IF_CONFIG_SMALL("WAV format"), @@ -138,6 +217,7 @@ AVOutputFormat ff_wav_muxer = { wav_write_packet, wav_write_trailer, .codec_tag= (const AVCodecTag* const []){ff_codec_wav_tags, 0}, + .priv_class = &wav_muxer_class, }; #endif /* CONFIG_WAV_MUXER */ @@ -207,11 +287,13 @@ static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st) return 0; } -static inline int wav_parse_bext_string(AVFormatContext *s, const char *key, int length) +static inline int wav_parse_bext_string(AVFormatContext *s, const char *key, + int length) { char temp[257]; int ret; + av_assert0(length <= sizeof(temp)); if ((ret = avio_read(s->pb, temp, length)) < 0) return ret; @@ -337,6 +419,7 @@ static int wav_read_header(AVFormatContext *s, return AVERROR_INVALIDDATA; } avio_skip(pb, size - 24); /* skip rest of ds64 chunk */ + } for (;;) { @@ -378,7 +461,7 @@ static int wav_read_header(AVFormatContext *s, goto break_loop; break; case MKTAG('f','a','c','t'): - if(!sample_count) + if (!sample_count) sample_count = avio_rl32(pb); break; case MKTAG('b','e','x','t'): |