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gppmux: Add support for 3gr6

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Keep track of the chunk durations to be able to add 3gr6
brand if it is a faststart file and the longest chunk is
smaller than a sec. Implemented according to 3gpp
TS 26.244 v6.4.0 (2005-09)

Fixes #584361
This commit is contained in:
Thiago Santos 2009-10-16 10:47:32 -03:00 committed by Thiago Santos
parent 2e9e240285
commit 8db2821791
5 changed files with 31 additions and 3 deletions
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1
gst/qtmux/ftypcc.h
View file

@ -56,6 +56,7 @@ G_BEGIN_DECLS
#define FOURCC_3gp4 GST_MAKE_FOURCC('3','g','p','4')
#define FOURCC_3gp6 GST_MAKE_FOURCC('3','g','p','6')
#define FOURCC_3gg6 GST_MAKE_FOURCC('3','g','g','6')
#define FOURCC_3gr6 GST_MAKE_FOURCC('3','g','r','6')
#define FOURCC_3gg7 GST_MAKE_FOURCC('3','g','g','7')
#define FOURCC_avc1 GST_MAKE_FOURCC('a','v','c','1')
#define FOURCC_qt__ GST_MAKE_FOURCC('q','t',' ',' ')

15
gst/qtmux/gstqtmux.c
View file

@ -268,6 +268,7 @@ gst_qt_mux_reset (GstQTMux * qtmux, gboolean alloc)
qtmux->header_size = 0;
qtmux->mdat_size = 0;
qtmux->mdat_pos = 0;
qtmux->longest_chunk = GST_CLOCK_TIME_NONE;
if (qtmux->ftyp) {
atom_ftyp_free (qtmux->ftyp);
@ -1035,7 +1036,8 @@ gst_qt_mux_prepare_and_send_ftyp (GstQTMux * qtmux)
if (qtmux->ftyp)
atom_ftyp_free (qtmux->ftyp);
gst_qt_mux_map_format_to_header (qtmux_klass->format, &prefix, &major,
&version, &comp, qtmux->moov);
&version, &comp, qtmux->moov, qtmux->longest_chunk,
qtmux->fast_start_file != NULL);
qtmux->ftyp = atom_ftyp_new (qtmux->context, major, version, comp);
if (comp)
g_list_free (comp);
@ -1357,6 +1359,17 @@ gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad, GstBuffer * buf)
GST_PAD_NAME (pad->collect.pad), pts_offset);
}
/*
* Each buffer starts a new chunk, so we can assume the buffer
* duration is the chunk duration
*/
if (GST_CLOCK_TIME_IS_VALID (duration) && (duration > qtmux->longest_chunk ||
!GST_CLOCK_TIME_IS_VALID (qtmux->longest_chunk))) {
GST_DEBUG_OBJECT (qtmux, "New longest chunk found: %" GST_TIME_FORMAT
", pad %s", GST_TIME_ARGS (duration), GST_PAD_NAME (pad->collect.pad));
qtmux->longest_chunk = duration;
}
/* now we go and register this buffer/sample all over */
/* note that a new chunk is started each time (not fancy but works) */
atom_trak_add_samples (pad->trak, nsamples, scaled_duration, sample_size,

3
gst/qtmux/gstqtmux.h
View file

@ -112,6 +112,9 @@ struct _GstQTMux
/* position of mdat atom (for later updating) */
guint64 mdat_pos;
/* keep track of the largest chunk to fine-tune brands */
GstClockTime longest_chunk;
/* atom helper objects */
AtomsContext *context;
AtomFTYP *ftyp;

11
gst/qtmux/gstqtmuxmap.c
View file

@ -243,7 +243,8 @@ gst_qt_mux_map_check_tracks (AtomMOOV * moov, gint * _video, gint * _audio,
* (but that might need ftyp rewriting at the end) */
void
gst_qt_mux_map_format_to_header (GstQTMuxFormat format, GstBuffer ** _prefix,
guint32 * _major, guint32 * _version, GList ** _compatible, AtomMOOV * moov)
guint32 * _major, guint32 * _version, GList ** _compatible, AtomMOOV * moov,
GstClockTime longest_chunk, gboolean faststart)
{
static guint32 qt_brands[] = { 0 };
static guint32 mp4_brands[] = { FOURCC_mp41, FOURCC_isom, FOURCC_iso2, 0 };
@ -287,6 +288,14 @@ gst_qt_mux_map_format_to_header (GstQTMuxFormat format, GstBuffer ** _prefix,
version = 0x100;
}
comp = gpp_brands;
/*
* We assume that we have chunks in dts order
*/
if (faststart && longest_chunk <= GST_SECOND) {
/* add progressive download profile */
result = g_list_append (result, GUINT_TO_POINTER (FOURCC_3gr6));
}
break;
}
case GST_QT_MUX_FORMAT_MJ2:

4
gst/qtmux/gstqtmuxmap.h
View file

@ -73,7 +73,9 @@ extern GstQTMuxFormatProp gst_qt_mux_format_list[];
void gst_qt_mux_map_format_to_header (GstQTMuxFormat format, GstBuffer ** _prefix,
guint32 * _major, guint32 * verson,
GList ** _compatible, AtomMOOV * moov);
GList ** _compatible, AtomMOOV * moov,
GstClockTime longest_chunk,
gboolean faststart);
AtomsTreeFlavor gst_qt_mux_map_format_to_flavor (GstQTMuxFormat format);