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00022 #include <inttypes.h>
00023
00024 #include "avformat.h"
00025 #include "ffmeta.h"
00026
00027
00028 static void write_escape_str(AVIOContext *s, const uint8_t *str)
00029 {
00030 const uint8_t *p = str;
00031
00032 while (*p) {
00033 if (*p == '#' || *p == ';' || *p == '=' || *p == '\\' || *p == '\n')
00034 avio_w8(s, '\\');
00035 avio_w8(s, *p);
00036 p++;
00037 }
00038 }
00039
00040 static void write_tags(AVIOContext *s, AVMetadata *m)
00041 {
00042 AVMetadataTag *t = NULL;
00043 while ((t = av_metadata_get(m, "", t, AV_METADATA_IGNORE_SUFFIX))) {
00044 write_escape_str(s, t->key);
00045 avio_w8(s, '=');
00046 write_escape_str(s, t->value);
00047 avio_w8(s, '\n');
00048 }
00049 }
00050
00051 static int write_header(AVFormatContext *s)
00052 {
00053 avio_write(s->pb, ID_STRING, sizeof(ID_STRING) - 1);
00054 avio_w8(s->pb, '1');
00055 avio_w8(s->pb, '\n');
00056 put_flush_packet(s->pb);
00057 return 0;
00058 }
00059
00060 static int write_trailer(AVFormatContext *s)
00061 {
00062 int i;
00063
00064 write_tags(s->pb, s->metadata);
00065
00066 for (i = 0; i < s->nb_streams; i++) {
00067 avio_write(s->pb, ID_STREAM, sizeof(ID_STREAM) - 1);
00068 avio_w8(s->pb, '\n');
00069 write_tags(s->pb, s->streams[i]->metadata);
00070 }
00071
00072 for (i = 0; i < s->nb_chapters; i++) {
00073 AVChapter *ch = s->chapters[i];
00074 avio_write(s->pb, ID_CHAPTER, sizeof(ID_CHAPTER) - 1);
00075 avio_w8(s->pb, '\n');
00076 url_fprintf(s->pb, "TIMEBASE=%d/%d\n", ch->time_base.num, ch->time_base.den);
00077 url_fprintf(s->pb, "START=%"PRId64"\n", ch->start);
00078 url_fprintf(s->pb, "END=%"PRId64"\n", ch->end);
00079 write_tags(s->pb, ch->metadata);
00080 }
00081
00082 put_flush_packet(s->pb);
00083
00084 return 0;
00085 }
00086
00087 static int write_packet(AVFormatContext *s, AVPacket *pkt)
00088 {
00089 return 0;
00090 }
00091
00092 AVOutputFormat ff_ffmetadata_muxer = {
00093 .name = "ffmetadata",
00094 .long_name = NULL_IF_CONFIG_SMALL("FFmpeg metadata in text format"),
00095 .extensions = "ffmeta",
00096 .write_header = write_header,
00097 .write_packet = write_packet,
00098 .write_trailer = write_trailer,
00099 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NOSTREAMS,
00100 };