diff options
| -rw-r--r-- | src/demuxers/demux_qt.c | 54 |
1 files changed, 37 insertions, 17 deletions
diff --git a/src/demuxers/demux_qt.c b/src/demuxers/demux_qt.c index cf7373ca4..85df87ab4 100644 --- a/src/demuxers/demux_qt.c +++ b/src/demuxers/demux_qt.c @@ -30,7 +30,7 @@ * build_frame_table * free_qt_info * - * $Id: demux_qt.c,v 1.189 2004/07/07 01:07:58 miguelfreitas Exp $ + * $Id: demux_qt.c,v 1.190 2004/08/18 21:41:58 jstembridge Exp $ * */ @@ -93,14 +93,14 @@ typedef unsigned int qt_atom; #define WAVE_ATOM QT_ATOM('w', 'a', 'v', 'e') #define FRMA_ATOM QT_ATOM('f', 'r', 'm', 'a') -#define IMA4_FOURCC QT_ATOM('i', 'm', 'a', '4') -#define MP4A_FOURCC QT_ATOM('m', 'p', '4', 'a') -#define SAMR_FOURCC QT_ATOM('s', 'a', 'm', 'r') -#define ALAC_FOURCC QT_ATOM('a', 'l', 'a', 'c') -#define DRMS_FOURCC QT_ATOM('d', 'r', 'm', 's') -#define TWOS_FOURCC QT_ATOM('t', 'w', 'o', 's') -#define SOWT_FOURCC QT_ATOM('s', 'o', 'w', 't') -#define RAW_FOURCC QT_ATOM('r', 'a', 'w', ' ') +#define IMA4_FOURCC ME_FOURCC('i', 'm', 'a', '4') +#define MP4A_FOURCC ME_FOURCC('m', 'p', '4', 'a') +#define SAMR_FOURCC ME_FOURCC('s', 'a', 'm', 'r') +#define ALAC_FOURCC ME_FOURCC('a', 'l', 'a', 'c') +#define DRMS_FOURCC ME_FOURCC('d', 'r', 'm', 's') +#define TWOS_FOURCC ME_FOURCC('t', 'w', 'o', 's') +#define SOWT_FOURCC ME_FOURCC('s', 'o', 'w', 't') +#define RAW_FOURCC ME_FOURCC('r', 'a', 'w', ' ') #define UDTA_ATOM QT_ATOM('u', 'd', 't', 'a') #define META_ATOM QT_ATOM('m', 'e', 't', 'a') @@ -259,6 +259,9 @@ typedef struct { /* flags that indicate how a trak is supposed to be used */ unsigned int flags; + /* formattag-like field that specifies codec in mp4 files */ + unsigned int object_type_id; + /* decoder data pass information to the AAC decoder */ void *decoder_config; int decoder_config_len; @@ -816,6 +819,7 @@ static qt_error parse_trak_atom (qt_trak *trak, trak->current_frame = 0; trak->timescale = 0; trak->flags = 0; + trak->object_type_id = 0; trak->decoder_config = NULL; trak->decoder_config_len = 0; trak->stsd_atoms_count = 0; @@ -1078,7 +1082,7 @@ static qt_error parse_trak_atom (qt_trak *trak, /* special case time: some ima4-encoded files don't have the * extra header; compensate */ - if (BE_32(&trak_atom[atom_pos + 0x0]) == IMA4_FOURCC) { + if (trak->stsd_atoms[k].audio.codec_fourcc == IMA4_FOURCC) { trak->stsd_atoms[k].audio.samples_per_packet = 64; trak->stsd_atoms[k].audio.bytes_per_packet = 34; trak->stsd_atoms[k].audio.bytes_per_frame = 34 * @@ -1124,16 +1128,16 @@ static qt_error parse_trak_atom (qt_trak *trak, trak->stsd_atoms[k].audio.vbr = 0; /* if this is MP4 audio, mark the trak as VBR */ - if (BE_32(&trak_atom[atom_pos + 0x0]) == MP4A_FOURCC) + if (trak->stsd_atoms[k].audio.codec_fourcc == MP4A_FOURCC) trak->stsd_atoms[k].audio.vbr = 1; - if (BE_32(&trak_atom[atom_pos + 0x0]) == SAMR_FOURCC) + if (trak->stsd_atoms[k].audio.codec_fourcc == SAMR_FOURCC) trak->stsd_atoms[k].audio.vbr = 1; - if (BE_32(&trak_atom[atom_pos + 0x0]) == ALAC_FOURCC) + if (trak->stsd_atoms[k].audio.codec_fourcc == ALAC_FOURCC) trak->stsd_atoms[k].audio.vbr = 1; - if (BE_32(&trak_atom[atom_pos + 0x0]) == DRMS_FOURCC) { + if (trak->stsd_atoms[k].audio.codec_fourcc == DRMS_FOURCC) { last_error = QT_DRM_NOT_SUPPORTED; goto free_trak; } @@ -1211,7 +1215,9 @@ static qt_error parse_trak_atom (qt_trak *trak, j += 2; if( trak_atom[j++] == 0x04 ) { j += mp4_read_descr_len( &trak_atom[j], &len ); - j += 13; + trak->object_type_id = trak_atom[j++]; + debug_atom_load(" object type id is %d\n", trak->object_type_id); + j += 12; if( trak_atom[j++] == 0x05 ) { j += mp4_read_descr_len( &trak_atom[j], &len ); debug_atom_load(" decoder config is %d (0x%X) bytes long\n", @@ -2496,8 +2502,22 @@ static void demux_qt_send_headers(demux_plugin_t *this_gen) { if (this->qt->audio_trak != -1) { - audio_trak->properties->audio.codec_buftype = - _x_formattag_to_buf_audio(audio_trak->properties->audio.codec_fourcc); + /* in mp4 files the audio fourcc is always 'mp4a' - the codec is + * specified by the object type id field in the esds atom */ + if(audio_trak->properties->audio.codec_fourcc == MP4A_FOURCC) { + switch(audio_trak->object_type_id) { + case 107: + audio_trak->properties->audio.codec_buftype = BUF_AUDIO_MPEG; + break; + default: + /* default to AAC if we have no better idea */ + audio_trak->properties->audio.codec_buftype = BUF_AUDIO_AAC; + break; + } + } else { + audio_trak->properties->audio.codec_buftype = + _x_formattag_to_buf_audio(audio_trak->properties->audio.codec_fourcc); + } if( !audio_trak->properties->audio.codec_buftype && audio_trak->properties->audio.codec_fourcc ) |