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fix parsing version 1 mdhd atom (64 bit) as suggested by b-o-n-d AT gmx DOT net (unstested); added code to map language codes to stream->language[] 

Originally committed as revision 4791 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
François Revol 2005-12-30 18:25:46 +00:00
parent f593b273fc
commit b9a87c4d6c
1 changed files with 56 additions and 5 deletions
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61
libavformat/mov.c
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@ -149,6 +149,30 @@ static const CodecTag mov_audio_tags[] = {
{ CODEC_ID_NONE, 0 },
};
/* map numeric codes from mdhd atom to ISO 639 */
/* cf. QTFileFormat.pdf p253, qtff.pdf p205 */
static const char *mov_mdhd_language_map[] = {
/* 0-9 */
"eng", "fra", "ger", "ita", "dut", "sve", "spa", "dan", "por", "nor",
"heb", "jpn", "ara", "fin", "gre", "ice", "mlt", "tur", "hr "/*scr*/, "chi"/*ace?*/,
"urd", "hin", "tha", "kor", "lit", "pol", "hun", "est", "lav", NULL,
"fo ", NULL, "rus", "chi", NULL, "iri", "alb", "ron", "ces", "slk",
"slv", "yid", "sr ", "mac", "bul", "ukr", "bel", "uzb", "kaz", "aze",
/*?*/
"aze", "arm", "geo", "mol", "kir", "tgk", "tuk", "mon", NULL, "pus",
"kur", "kas", "snd", "tib", "nep", "san", "mar", "ben", "asm", "guj",
"pa ", "ori", "mal", "kan", "tam", "tel", NULL, "bur", "khm", "lao",
/* roman? arabic? */
"vie", "ind", "tgl", "may", "may", "amh", "tir", "orm", "som", "swa",
/*==rundi?*/
NULL, "run", NULL, "mlg", "epo", NULL, NULL, NULL, NULL, NULL,
/* 100 */
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "wel", "baq",
"cat", "lat", "que", "grn", "aym", "tat", "uig", "dzo", "jav"
};
/* the QuickTime file format is quite convoluted...
* it has lots of index tables, each indexing something in another one...
* Here we just use what is needed to read the chunks
@ -329,6 +353,25 @@ void print_atom(const char *str, MOV_atom_t atom)
#define print_atom(a,b)
#endif
const char *ff_mov_lang_to_iso639(int code)
{
if (code >= (sizeof(mov_mdhd_language_map)/sizeof(char *)))
return NULL;
if (!mov_mdhd_language_map[code])
return NULL;
return mov_mdhd_language_map[code];
}
extern int ff_mov_iso639_to_lang(const char *lang); /* for movenc.c */
int ff_mov_iso639_to_lang(const char *lang)
{
int i;
for (i = 0; i < (sizeof(mov_mdhd_language_map)/sizeof(char *)); i++) {
if (mov_mdhd_language_map[i] && !strcmp(lang, mov_mdhd_language_map[i]))
return i;
}
return -1;
}
static int mov_read_leaf(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
{
@ -630,15 +673,20 @@ static int mov_read_moov(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
{
int version;
int lang;
const char *iso639;
print_atom("mdhd", atom);
get_byte(pb); /* version */
version = get_byte(pb); /* version */
if (version > 1)
return 1; /* unsupported */
get_byte(pb); get_byte(pb);
get_byte(pb); /* flags */
get_be32(pb); /* creation time */
get_be32(pb); /* modification time */
(version==1)?get_be64(pb):get_be32(pb); /* creation time */
(version==1)?get_be64(pb):get_be32(pb); /* modification time */
c->streams[c->fc->nb_streams-1]->time_scale = get_be32(pb);
av_set_pts_info(c->fc->streams[c->fc->nb_streams-1], 64, 1, c->streams[c->fc->nb_streams-1]->time_scale);
@ -646,9 +694,12 @@ static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
#ifdef DEBUG
av_log(NULL, AV_LOG_DEBUG, "track[%i].time_scale = %i\n", c->fc->nb_streams-1, c->streams[c->fc->nb_streams-1]->time_scale); /* time scale */
#endif
c->fc->streams[c->fc->nb_streams-1]->duration= get_be32(pb); /* duration */
c->fc->streams[c->fc->nb_streams-1]->duration = (version==1)?get_be64(pb):get_be32(pb); /* duration */
get_be16(pb); /* language */
lang = get_be16(pb); /* language */
iso639 = ff_mov_lang_to_iso639(lang);
if (iso639)
strncpy(c->fc->streams[c->fc->nb_streams-1]->language, iso639, 4);
get_be16(pb); /* quality */
return 0;