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qtmux: refactor building stsd entry 'wave' extension

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This commit is contained in:
Mark Nauwelaerts 2010-02-16 14:19:04 +01:00
parent e6a27e2431
commit fdfdda8f09
1 changed files with 36 additions and 24 deletions
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60
gst/qtmux/atoms.c
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@ -3100,42 +3100,34 @@ build_esds_extension (AtomTRAK * trak, guint8 object_type, guint8 stream_type,
atom_esds_free);
}
AtomInfo *
build_mov_aac_extension (AtomTRAK * trak, const GstBuffer * codec_data)
static AtomInfo *
build_mov_wave_extension (AtomTRAK * trak, guint32 fourcc, AtomInfo * atom1,
AtomInfo * atom2, gboolean terminator)
{
AtomWAVE *wave;
AtomFRMA *frma;
Atom *ext_atom;
GstBuffer *buf;
/* Add WAVE atom to the MP4A sample table entry */
/* Build WAVE atom for sample table entry */
wave = atom_wave_new ();
/* Prepend Terminator atom to the WAVE list first, so it ends up last */
ext_atom = (Atom *) atom_data_new (FOURCC_null);
wave->extension_atoms =
atom_info_list_prepend_atom (wave->extension_atoms, (Atom *) ext_atom,
(AtomCopyDataFunc) atom_data_copy_data, (AtomFreeFunc) atom_data_free);
if (terminator) {
ext_atom = (Atom *) atom_data_new (FOURCC_null);
wave->extension_atoms =
atom_info_list_prepend_atom (wave->extension_atoms, (Atom *) ext_atom,
(AtomCopyDataFunc) atom_data_copy_data, (AtomFreeFunc) atom_data_free);
}
/* Add ESDS atom to WAVE */
wave->extension_atoms = g_list_prepend (wave->extension_atoms,
build_esds_extension (trak, ESDS_OBJECT_TYPE_MPEG4_P3,
ESDS_STREAM_TYPE_AUDIO, codec_data));
/* Add MP4A atom to the WAVE:
* not really in spec, but makes offset based players happy */
buf = gst_buffer_new_and_alloc (4);
*((guint32 *) GST_BUFFER_DATA (buf)) = 0;
ext_atom = (Atom *) atom_data_new_from_gst_buffer (FOURCC_mp4a, buf);
gst_buffer_unref (buf);
wave->extension_atoms =
atom_info_list_prepend_atom (wave->extension_atoms, (Atom *) ext_atom,
(AtomCopyDataFunc) atom_data_copy_data, (AtomFreeFunc) atom_data_free);
/* Add supplied atoms to WAVE */
if (atom2)
wave->extension_atoms = g_list_prepend (wave->extension_atoms, atom2);
if (atom1)
wave->extension_atoms = g_list_prepend (wave->extension_atoms, atom1);
/* Add FRMA to the WAVE */
frma = atom_frma_new ();
frma->media_type = FOURCC_mp4a;
frma->media_type = fourcc;
wave->extension_atoms =
atom_info_list_prepend_atom (wave->extension_atoms, (Atom *) frma,
@ -3145,6 +3137,26 @@ build_mov_aac_extension (AtomTRAK * trak, const GstBuffer * codec_data)
atom_wave_free);
}
AtomInfo *
build_mov_aac_extension (AtomTRAK * trak, const GstBuffer * codec_data)
{
AtomInfo *esds, *mp4a;
GstBuffer *buf;
/* Add ESDS atom to WAVE */
esds = build_esds_extension (trak, ESDS_OBJECT_TYPE_MPEG4_P3,
ESDS_STREAM_TYPE_AUDIO, codec_data);
/* Add MP4A atom to the WAVE:
* not really in spec, but makes offset based players happy */
buf = gst_buffer_new_and_alloc (4);
*((guint32 *) GST_BUFFER_DATA (buf)) = 0;
mp4a = build_codec_data_extension (FOURCC_mp4a, buf);
gst_buffer_unref (buf);
return build_mov_wave_extension (trak, FOURCC_mp4a, mp4a, esds, TRUE);
}
AtomInfo *
build_fiel_extension (gint fields)
{