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https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
simplify meta tag writing code
Originally committed as revision 5403 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
parent
dae5b496fd
commit
efda33957f
@ -1066,135 +1066,45 @@ static int mov_write_itunes_hdlr_tag(ByteIOContext *pb, MOVContext* mov,
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}
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/* helper function to write a data tag with the specified string as data */
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static int mov_write_string_data_tag(ByteIOContext *pb, MOVContext* mov,
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AVFormatContext *s, const char *data)
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static int mov_write_string_data_tag(ByteIOContext *pb, const char *data, int long_style)
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{
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "data");
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put_be32(pb, 1);
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put_be32(pb, 0);
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put_buffer(pb, data, strlen(data));
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return updateSize(pb, pos);
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}
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/* iTunes name of the song/movie */
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static int mov_write_nam_tag(ByteIOContext *pb, MOVContext* mov,
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AVFormatContext *s)
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{
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int size = 0;
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if ( s->title[0] ) {
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if(long_style){
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "\251nam");
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mov_write_string_data_tag(pb, mov, s, s->title);
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size = updateSize(pb, pos);
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put_tag(pb, "data");
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put_be32(pb, 1);
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put_be32(pb, 0);
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put_buffer(pb, data, strlen(data));
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return updateSize(pb, pos);
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}else{
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put_be16(pb, strlen(data)); /* string length */
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put_be16(pb, 0);
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put_buffer(pb, data, strlen(data));
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return strlen(data) + 4;
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}
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return size;
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}
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/* iTunes name of the artist/performer */
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static int mov_write_ART_tag(ByteIOContext *pb, MOVContext* mov,
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AVFormatContext *s)
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{
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static int mov_write_string_tag(ByteIOContext *pb, char *name, char *value, int long_style){
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int size = 0;
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if ( s->author[0] ) {
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if ( value && value[0] ) {
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "\251ART");
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// we use the author here as this is the only thing that we have...
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mov_write_string_data_tag(pb, mov, s, s->author);
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size = updateSize(pb, pos);
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}
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return size;
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}
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/* iTunes name of the writer */
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static int mov_write_wrt_tag(ByteIOContext *pb, MOVContext* mov,
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AVFormatContext *s)
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{
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int size = 0;
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if ( s->author[0] ) {
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "\251wrt");
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mov_write_string_data_tag(pb, mov, s, s->author);
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size = updateSize(pb, pos);
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}
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return size;
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}
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/* iTunes name of the album */
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static int mov_write_alb_tag(ByteIOContext *pb, MOVContext* mov,
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AVFormatContext *s)
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{
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int size = 0;
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if ( s->album[0] ) {
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "\251alb");
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mov_write_string_data_tag(pb, mov, s, s->album);
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size = updateSize(pb, pos);
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put_tag(pb, name);
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mov_write_string_data_tag(pb, value, long_style);
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size= updateSize(pb, pos);
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}
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return size;
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}
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/* iTunes year */
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static int mov_write_day_tag(ByteIOContext *pb, MOVContext* mov,
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AVFormatContext *s)
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static int mov_write_day_tag(ByteIOContext *pb, int year, int long_style)
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{
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char year[5];
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int size = 0;
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if ( s->year ) {
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "\251day");
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snprintf(year, 5, "%04d", s->year);
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mov_write_string_data_tag(pb, mov, s, year);
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size = updateSize(pb, pos);
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}
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return size;
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}
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/* iTunes tool used to create the file */
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static int mov_write_too_tag(ByteIOContext *pb, MOVContext* mov,
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AVFormatContext *s)
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{
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "\251too");
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mov_write_string_data_tag(pb, mov, s, LIBAVFORMAT_IDENT);
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return updateSize(pb, pos);
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}
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/* iTunes comment */
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static int mov_write_cmt_tag(ByteIOContext *pb, MOVContext* mov,
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AVFormatContext *s)
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{
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int size = 0;
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if ( s->comment[0] ) {
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "\251cmt");
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mov_write_string_data_tag(pb, mov, s, s->comment);
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size = updateSize(pb, pos);
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}
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return size;
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}
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/* iTunes custom genre */
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static int mov_write_gen_tag(ByteIOContext *pb, MOVContext* mov,
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AVFormatContext *s)
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{
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int size = 0;
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if ( s->genre[0] ) {
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "\251gen");
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mov_write_string_data_tag(pb, mov, s, s->genre);
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size = updateSize(pb, pos);
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}
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return size;
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if(year){
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char year_str[5];
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snprintf(year_str, sizeof(year_str), "%04d", year);
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return mov_write_string_tag(pb, "\251day", year_str, long_style);
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}else
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return 0;
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}
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/* iTunes track number */
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@ -1230,14 +1140,14 @@ static int mov_write_ilst_tag(ByteIOContext *pb, MOVContext* mov,
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "ilst");
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mov_write_nam_tag(pb, mov, s);
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mov_write_ART_tag(pb, mov, s);
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mov_write_wrt_tag(pb, mov, s);
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mov_write_alb_tag(pb, mov, s);
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mov_write_day_tag(pb, mov, s);
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mov_write_too_tag(pb, mov, s);
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mov_write_cmt_tag(pb, mov, s);
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mov_write_gen_tag(pb, mov, s);
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mov_write_string_tag(pb, "\251nam", s->title , 1);
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mov_write_string_tag(pb, "\251ART", s->author , 1);
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mov_write_string_tag(pb, "\251wrt", s->author , 1);
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mov_write_string_tag(pb, "\251alb", s->album , 1);
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mov_write_day_tag(pb, s->year ,1);
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mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 1);
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mov_write_string_tag(pb, "\251cmt", s->comment , 1);
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mov_write_string_tag(pb, "\251gen", s->genre , 1);
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mov_write_trkn_tag(pb, mov, s);
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return updateSize(pb, pos);
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}
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@ -1279,62 +1189,19 @@ static int mov_write_udta_tag(ByteIOContext *pb, MOVContext* mov,
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if(mov->tracks[i].entry <= 0) continue;
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if (mov->tracks[i].enc->codec_id == CODEC_ID_AAC ||
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mov->tracks[i].enc->codec_id == CODEC_ID_MPEG4) {
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "\251req");
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put_be16(pb, sizeof("QuickTime 6.0 or greater") - 1);
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put_be16(pb, 0);
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put_buffer(pb, "QuickTime 6.0 or greater",
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sizeof("QuickTime 6.0 or greater") - 1);
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updateSize(pb, pos);
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mov_write_string_tag(pb, "\251req", "QuickTime 6.0 or greater", 0);
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break;
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}
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}
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/* Encoder */
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mov_write_string_tag(pb, "\251nam", s->title , 0);
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mov_write_string_tag(pb, "\251aut", s->author , 0);
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mov_write_string_tag(pb, "\251alb", s->album , 0);
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mov_write_day_tag(pb, s->year, 0);
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if(mov->tracks[0].enc && !(mov->tracks[0].enc->flags & CODEC_FLAG_BITEXACT))
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{
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "\251enc");
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put_be16(pb, sizeof(LIBAVFORMAT_IDENT) - 1); /* string length */
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put_be16(pb, 0);
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put_buffer(pb, LIBAVFORMAT_IDENT, sizeof(LIBAVFORMAT_IDENT) - 1);
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updateSize(pb, pos);
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}
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if( s->title[0] )
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{
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "\251nam");
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put_be16(pb, strlen(s->title)); /* string length */
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put_be16(pb, 0);
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put_buffer(pb, s->title, strlen(s->title));
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updateSize(pb, pos);
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}
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if( s->author[0] )
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{
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, /*"\251aut"*/ "\251day" );
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put_be16(pb, strlen(s->author)); /* string length */
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put_be16(pb, 0);
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put_buffer(pb, s->author, strlen(s->author));
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updateSize(pb, pos);
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}
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if( s->comment[0] )
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{
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offset_t pos = url_ftell(pb);
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put_be32(pb, 0); /* size */
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put_tag(pb, "\251des");
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put_be16(pb, strlen(s->comment)); /* string length */
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put_be16(pb, 0);
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put_buffer(pb, s->comment, strlen(s->comment));
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updateSize(pb, pos);
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}
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mov_write_string_tag(pb, "\251enc", LIBAVFORMAT_IDENT, 0);
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mov_write_string_tag(pb, "\251des", s->comment , 0);
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mov_write_string_tag(pb, "\251gen", s->genre , 0);
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return updateSize(pb, pos);
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}
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