gstreamer/gst/qtdemux/qtdemux.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <stdlib.h>
#include <string.h>
#include "qtdemux.h"
/* elementfactory information */
static GstElementDetails
gst_qtdemux_details =
{
"quicktime parser",
"Codec/Parser",
"LGPL",
"Parses a quicktime stream into audio and video substreams",
VERSION,
"A.Baguinski <artm@v2.nl>",
"(C) 2002",
};
static GstCaps* quicktime_type_find (GstBuffer *buf, gpointer private);
/* typefactory for 'quicktime' */
static GstTypeDefinition quicktimedefinition = {
"qtdemux_video/quicktime",
"video/quicktime",
".mov",
quicktime_type_find,
};
enum {
LAST_SIGNAL
};
enum {
ARG_0
};
GST_PAD_TEMPLATE_FACTORY (sink_templ,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"qtdemux_sink",
"video/quicktime",
NULL
)
);
/*
* so far i only support Photo Jpeg videos and no audio.
* after this one works ok, i'll see what's next.
*/
GST_PAD_TEMPLATE_FACTORY (src_video_templ,
"video_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_CAPS_NEW (
"qtdemux_src_video",
"video/jpeg",
"width", GST_PROPS_INT_RANGE (16, 4096),
"height", GST_PROPS_INT_RANGE (16, 4096)
)
);
static GstElementClass *parent_class = NULL;
/*
* contains correspondence between atom types and
* GstQtpAtomType structures
*/
static GHashTable * gst_qtp_type_registry;
typedef struct {
guint32 type;
GstQtpAtomType atype;
} GstQtpTypePair;
static void gst_qtp_trak_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter);
static void gst_qtp_tkhd_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter);
static void gst_qtp_hdlr_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter);
static void gst_qtp_stsd_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter);
static void gst_qtp_stts_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter);
static void gst_qtp_stsc_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter);
static void gst_qtp_stsz_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter);
static void gst_qtp_stco_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter);
static void gst_qtp_mdhd_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter);
static void gst_qtp_mdat_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter);
GstQtpTypePair gst_qtp_type_table[] = {
{ GST_MAKE_FOURCC('m','o','o','v'), {GST_QTP_CONTAINER_ATOM,NULL} },
{ GST_MAKE_FOURCC('t','r','a','k'), {GST_QTP_CONTAINER_ATOM,gst_qtp_trak_handler} },
{ GST_MAKE_FOURCC('e','d','t','s'), {GST_QTP_CONTAINER_ATOM,NULL} },
{ GST_MAKE_FOURCC('m','d','i','a'), {GST_QTP_CONTAINER_ATOM,NULL} },
{ GST_MAKE_FOURCC('m','i','n','f'), {GST_QTP_CONTAINER_ATOM,NULL} },
{ GST_MAKE_FOURCC('d','i','n','f'), {GST_QTP_CONTAINER_ATOM,NULL} },
{ GST_MAKE_FOURCC('s','t','b','l'), {GST_QTP_CONTAINER_ATOM,NULL} },
{ GST_MAKE_FOURCC('m','d','a','t'), {0,gst_qtp_mdat_handler} },
{ GST_MAKE_FOURCC('m','v','h','d'), {0,NULL} },
{ GST_MAKE_FOURCC('t','k','h','d'), {0,gst_qtp_tkhd_handler} },
{ GST_MAKE_FOURCC('e','l','s','t'), {0,NULL} },
{ GST_MAKE_FOURCC('m','d','h','d'), {0,gst_qtp_mdhd_handler} },
{ GST_MAKE_FOURCC('h','d','l','r'), {0,gst_qtp_hdlr_handler} },
{ GST_MAKE_FOURCC('v','m','h','d'), {0,NULL} },
{ GST_MAKE_FOURCC('d','r','e','f'), {0,NULL} },
{ GST_MAKE_FOURCC('s','t','t','s'), {0,gst_qtp_stts_handler} },
{ GST_MAKE_FOURCC('s','t','s','d'), {0,gst_qtp_stsd_handler} },
{ GST_MAKE_FOURCC('s','t','s','z'), {0,gst_qtp_stsz_handler} },
{ GST_MAKE_FOURCC('s','t','s','c'), {0,gst_qtp_stsc_handler} },
{ GST_MAKE_FOURCC('s','t','c','o'), {0,gst_qtp_stco_handler} }
};
#define GST_QTP_TYPE_CNT sizeof(gst_qtp_type_table)/sizeof(GstQtpTypePair)
static void gst_qtdemux_class_init (GstQTDemuxClass *klass);
static void gst_qtdemux_init (GstQTDemux *quicktime_demux);
static void gst_qtdemux_loop (GstElement *element);
static GstElementStateReturn gst_qtdemux_change_state (GstElement * element);
static gint gst_guint32_compare(gconstpointer _a, gconstpointer _b);
static GType
gst_qtdemux_get_type (void)
{
static GType qtdemux_type = 0;
if (!qtdemux_type) {
static const GTypeInfo qtdemux_info = {
sizeof(GstQTDemuxClass), NULL, NULL,
(GClassInitFunc)gst_qtdemux_class_init,
NULL, NULL, sizeof(GstQTDemux), 0,
(GInstanceInitFunc)gst_qtdemux_init,
};
qtdemux_type = g_type_register_static (GST_TYPE_ELEMENT, "GstQTDemux", &qtdemux_info, 0);
}
return qtdemux_type;
}
static void
gst_qtdemux_class_init (GstQTDemuxClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
int i;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gstelement_class->change_state = gst_qtdemux_change_state;
gst_qtp_type_registry = g_hash_table_new(g_int_hash,g_int_equal);
for(i=0;i<GST_QTP_TYPE_CNT;i++) {
g_hash_table_insert(gst_qtp_type_registry,&(gst_qtp_type_table[i].type),&(gst_qtp_type_table[i].atype));
}
}
static GstElementStateReturn
gst_qtdemux_change_state (GstElement * element)
{
GstQTDemux * qtdemux = GST_QTDEMUX (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_READY_TO_PAUSED:
qtdemux->bs = gst_bytestream_new (qtdemux->sinkpad);
break;
case GST_STATE_PAUSED_TO_READY:
gst_bytestream_destroy (qtdemux->bs);
break;
default:
break;
}
parent_class->change_state (element);
return GST_STATE_SUCCESS;
}
static void
gst_qtdemux_init (GstQTDemux *qtdemux)
{
guint i;
qtdemux->sinkpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (sink_templ), "sink");
gst_element_set_loop_function (GST_ELEMENT (qtdemux), gst_qtdemux_loop);
gst_element_add_pad (GST_ELEMENT (qtdemux), qtdemux->sinkpad);
for (i=0; i<GST_QTDEMUX_MAX_VIDEO_PADS; i++)
qtdemux->video_pad[i] = NULL;
qtdemux->num_video_pads = 0;
qtdemux->bs_pos = 0;
qtdemux->nested = NULL;
qtdemux->nested_cnt = 0;
qtdemux->tracks = NULL;
qtdemux->samples = NULL;
}
static GstCaps*
quicktime_type_find (GstBuffer *buf,
gpointer private)
{
gchar *data = GST_BUFFER_DATA (buf);
/* exactly like in the old version */
if (!strncmp (&data[4], "wide", 4) ||
!strncmp (&data[4], "moov", 4) ||
!strncmp (&data[4], "mdat", 4)) {
return gst_caps_new ("quicktime_type_find",
"video/quicktime",
NULL);
}
return NULL;
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
GstTypeFactory *type;
if (!gst_library_load ("gstbytestream"))
return FALSE;
factory = gst_element_factory_new ("qtdemux", GST_TYPE_QTDEMUX,
&gst_qtdemux_details);
g_return_val_if_fail(factory != NULL, FALSE);
gst_element_factory_set_rank (factory, GST_ELEMENT_RANK_PRIMARY);
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (sink_templ));
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (src_video_templ));
type = gst_type_factory_new (&quicktimedefinition);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"qtdemux",
plugin_init
};
static gboolean
gst_qtdemux_handle_event (GstQTDemux * qtdemux)
{
guint32 remaining;
GstEvent * event;
GstEventType type;
gst_bytestream_get_status (qtdemux->bs,&remaining,&event);
type = event? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
switch (type) {
case GST_EVENT_EOS:
gst_pad_event_default (qtdemux->sinkpad,event);
break;
case GST_EVENT_DISCONTINUOUS:
gst_bytestream_flush_fast (qtdemux->bs, remaining);
default:
gst_pad_event_default (qtdemux->sinkpad,event);
break;
}
return TRUE;
}
static gboolean gst_qtp_read_bytes_atom_head(GstQTDemux * qtdemux,GstQtpAtom * atom);
static gboolean gst_qtp_skip(GstQTDemux * qtdemux, guint64 skip);
static gboolean gst_qtp_skip_atom(GstQTDemux * qtdemux, GstQtpAtom * atom);
static gboolean gst_qtp_skip_container(GstQTDemux * qtdemux, guint32 type);
/* new track emerges here */
static GstQtpTrack * track_to_be = NULL;
/*
* - gst_qtp_* functions together with gst_qtdemux_loop implement quicktime
* parser.
*/
static void
gst_qtdemux_loop (GstElement *element)
{
GstQTDemux * qtdemux = GST_QTDEMUX (element);
GstQtpAtom atom;
GstQtpAtomType * atom_type;
/* ain't we out of the current container? */
if (qtdemux->nested) {
GstQtpAtom * current = (GstQtpAtom *) qtdemux->nested->data;
while (current && (current->size!=0) && (current->start+current->size <= qtdemux->bs_pos)) {
/* indeed we are! */
qtdemux->nested = qtdemux->nested->next;
qtdemux->nested_cnt--;
/* if atom type has a handler call it with enter=FALSE (i.e. leave) */
atom_type = g_hash_table_lookup (gst_qtp_type_registry,&(current->type));
if (atom_type && atom_type->handler)
atom_type->handler(qtdemux,current,FALSE);
free(current);
current = qtdemux->nested?(GstQtpAtom *) qtdemux->nested->data:NULL;
}
}
gst_qtp_read_bytes_atom_head(qtdemux,&atom);
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtdemux_loop: atom(%c%c%c%c,%llu,%llu)\n",GST_FOURCC_TO_CHARSEQ(atom.type),atom.start,atom.size);
atom_type = g_hash_table_lookup (gst_qtp_type_registry,&atom.type);
if (!atom_type) {
gst_qtp_skip_atom(qtdemux,&atom);
return;
}
if (atom_type->flags & GST_QTP_CONTAINER_ATOM) {
GstQtpAtom * new_atom;
new_atom = malloc(sizeof(GstQtpAtom));
memcpy(new_atom,&atom,sizeof(GstQtpAtom));
qtdemux->nested_cnt++;
qtdemux->nested = g_slist_prepend (qtdemux->nested, new_atom);
if (atom_type->handler)
atom_type->handler(qtdemux,&atom,TRUE);
} else {
/* leaf atom */
if (atom_type->handler)
atom_type->handler(qtdemux,&atom,TRUE);
/*
* if there wasn't a handler - we skip the whole atom
* if there was - ensure that next thing read will be after the atom
* (handler isn't obligated to read anything)
*/
gst_qtp_skip_atom(qtdemux,&atom);
return;
}
}
/*
* peeks an atom header,
* advances qtdemux->bs_pos (cause bytestream won't tell)
* flushes bytestream
*/
static gboolean
gst_qtp_read_bytes_atom_head(GstQTDemux * qtdemux,GstQtpAtom * atom)
{
GstByteStream * bs = qtdemux->bs;
GstQtpAtomMinHeader * amh = NULL;
guint64 * esize=NULL;
/* FIXME this can't be right, rewrite with _read */
do { /* do ... while (event()) is necessary for bytestream events */
if (!amh) {
if (gst_bytestream_peek_bytes (bs, (guint8**)&amh, 8) == 8) {
atom->size = GUINT32_FROM_BE(amh->size);
atom->type = amh->type; /* don't need to turn this around magicly FIXME this can depend on endiannes */
atom->start = qtdemux->bs_pos;
gst_bytestream_flush (bs, 8);
qtdemux->bs_pos += 8;
}
}
if (amh) {
if (atom->size == 1) { /* need to peek extended size field */
if (gst_bytestream_peek_bytes (bs, (guint8**)&esize, 8) == 8) {
atom->size = GUINT64_FROM_BE(*esize);
gst_bytestream_flush (bs, 8);
qtdemux->bs_pos += 8;
return TRUE;
}
} else {
return TRUE;
}
}
} while (gst_qtdemux_handle_event (qtdemux));
return TRUE;
}
static void
gst_qtp_read_bytes(GstQTDemux * qtdemux, void * buffer, size_t size)
{
void * data;
GstByteStream * bs = qtdemux->bs;
do {
if (gst_bytestream_peek_bytes (bs, (guint8**)&data, size) == size) {
memcpy(buffer,data,size);
gst_bytestream_flush(bs,size);
qtdemux->bs_pos += size;
return;
}
} while (gst_qtdemux_handle_event (qtdemux));
}
static GstBuffer *
gst_qtp_read(GstQTDemux * qtdemux, size_t size)
{
GstBuffer * buf;
GstByteStream * bs = qtdemux->bs;
do {
if (gst_bytestream_read (bs, &buf, size) == size) {
qtdemux->bs_pos += size;
return buf;
}
} while (gst_qtdemux_handle_event (qtdemux));
return NULL;
}
/*
* skips some input (e.g. to ignore unknown atom)
*/
static gboolean
gst_qtp_skip(GstQTDemux * qtdemux, guint64 skip)
{
GstByteStream * bs = qtdemux->bs;
if (skip) {
gst_bytestream_flush(bs,skip);
qtdemux->bs_pos += skip;
}
return TRUE;
}
/* convenience function for skipping the given atom */
static gboolean
gst_qtp_skip_atom(GstQTDemux * qtdemux, GstQtpAtom * atom)
{
if (qtdemux->bs_pos < atom->start + atom->size) {
guint64 skip = atom->start + atom->size - qtdemux->bs_pos;
return gst_qtp_skip(qtdemux,skip);
} else
return FALSE;
}
/* skips the container with type 'type' if finds it in the nesting stack */
static gboolean
gst_qtp_skip_container(GstQTDemux * qtdemux, guint32 type)
{
GSList * iter = qtdemux->nested;
while (iter && ((GstQtpAtom*)(iter->data))->type != type)
iter = iter->next;
if (iter)
return gst_qtp_skip_atom(qtdemux,(GstQtpAtom*)iter->data);
else
return FALSE;
}
static gint
gst_guint32_compare(gconstpointer a, gconstpointer b)
{
if ((guint32*)a < (guint32*)b)
return -1;
else if ((guint32*)a > (guint32*)b)
return 1;
else
return 0;
}
static void
gst_qtp_trak_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter)
{
if (enter) { /* enter trak */
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_trak_handler: enter\n");
track_to_be = malloc(sizeof(GstQtpTrack));
track_to_be->stsd = NULL;
track_to_be->stts = NULL;
track_to_be->stsc = NULL;
track_to_be->stsz = NULL;
track_to_be->stco = NULL;
track_to_be->samples = NULL;
track_to_be->pad = NULL;
} else { /* leave trak */
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_trak_handler: leave\n");
if (track_to_be) { /* if we didnt discard this track earlier */
GstQtpStscRec * stsc;
guint32 * stsz, * stco, offset;
int chunk,sample,nchunks,nsamples,stsc_idx,nstsc;
GstCaps * newcaps = NULL;
/* process sample tables */
/*
* FIXME have to check which sample tables are present and which are not
* and skip the track if there's not enough tables or set default values
* if some optional tables are missing
*/
/*
* FIXME i assume that there's only one of each stsd record and stts
* record in the tables that's not always true, this must be changed
* later, as soon as i encounter qt file with bigger tables.
*/
track_to_be->format = ((GstQtpStsdRec*)GST_BUFFER_DATA(track_to_be->stsd))->format;
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_trak_handler: format: %c%c%c%c\n",GST_FOURCC_TO_CHARSEQ(track_to_be->format));
track_to_be->sample_duration = GUINT32_FROM_BE(((GstQtpSttsRec*)GST_BUFFER_DATA(track_to_be->stts))->duration);
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_trak_handler: sample duration: %d\n",track_to_be->sample_duration);
/*
* depending on format we can decide to refuse this track all together
* if we don't know what for format that it.
*/
switch (track_to_be->format) {
case GST_MAKE_FOURCC('j','p','e','g'):
track_to_be->pad = gst_pad_new_from_template(
GST_PAD_TEMPLATE_GET(src_video_templ),
g_strdup_printf("video_%02d",qtdemux->num_video_pads++));
newcaps = GST_CAPS_NEW(
"qtdemux_video_src",
"video/jpeg",
"width", GST_PROPS_INT(track_to_be->width),
"height", GST_PROPS_INT(track_to_be->height));
gst_pad_try_set_caps(track_to_be->pad,newcaps);
gst_element_add_pad(GST_ELEMENT(qtdemux),track_to_be->pad);
break;
}
/*
* now let's find all about individual samples and put them into samples
* tree
*/
if (!qtdemux->samples) {
qtdemux->samples = g_tree_new(gst_guint32_compare);
}
stsc = (GstQtpStscRec*)GST_BUFFER_DATA(track_to_be->stsc);
stsz = (guint32*)GST_BUFFER_DATA(track_to_be->stsz);
stco = (guint32*)GST_BUFFER_DATA(track_to_be->stco);
nchunks = GST_BUFFER_SIZE(track_to_be->stco)/sizeof(guint32);
nsamples = GST_BUFFER_SIZE(track_to_be->stsz)/sizeof(guint32);
nstsc = GST_BUFFER_SIZE(track_to_be->stsc)/sizeof(GstQtpStscRec);
track_to_be->samples = malloc(nsamples*sizeof(GstQtpSample));
for(chunk=0,sample=0,stsc_idx=0;
chunk<nchunks;
chunk++) {
int i;
offset = GUINT32_FROM_BE(stco[chunk]);
if (stsc_idx+1<nstsc && chunk+1==GUINT32_FROM_BE(stsc[stsc_idx+1].first_chunk)) {
stsc_idx++;
}
for(i=0;i<GUINT32_FROM_BE(stsc[stsc_idx].samples_per_chunk);i++,sample++) {
guint32 size = GUINT32_FROM_BE(stsz[sample]);
track_to_be->samples[sample].offset = offset;
track_to_be->samples[sample].size = size;
track_to_be->samples[sample].timestamp = sample*((1000000*track_to_be->sample_duration)/track_to_be->time_scale);
track_to_be->samples[sample].track = track_to_be;
g_tree_insert(qtdemux->samples,&(track_to_be->samples[sample].offset),&(track_to_be->samples[sample]));
offset += size;
}
}
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_trak_handler: trak added to the list\n");
qtdemux->tracks = g_list_prepend(qtdemux->tracks,track_to_be);
gst_buffer_unref(track_to_be->stsd);
gst_buffer_unref(track_to_be->stts);
gst_buffer_unref(track_to_be->stsc);
gst_buffer_unref(track_to_be->stsz);
gst_buffer_unref(track_to_be->stco);
track_to_be = 0;
}
}
}
/*
* weird formats they apple guys are using
* weird conversion copied from openquicktime
* FIXME either it can be done more beautiful/fast way or this fixme has to go
*/
static float
fixed32_to_float(guint32 fixed)
{
unsigned char * data = (unsigned char*)&fixed;
guint32 a, b, c, d;
a = data[0];
b = data[1];
c = data[2];
d = data[3];
a = (a << 8) + b;
b = (c << 8) + d;
return (float)a + (float)b / 65536;
}
static void
gst_qtp_tkhd_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter)
{
guint32 wh[2];
/* if we get here track_to_be must be not NULL */
g_assert(track_to_be);
gst_qtp_skip(qtdemux,76); /* don't need those values */
gst_qtp_read_bytes(qtdemux,wh,8);
track_to_be->width = (guint32) fixed32_to_float(wh[0]);
track_to_be->height = (guint32) fixed32_to_float(wh[1]);
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_tkhd_handler: track dimmensions: %dx%d\n",track_to_be->width,track_to_be->height);
}
static void
gst_qtp_hdlr_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter)
{
guint32 a[3];
gst_qtp_read_bytes(qtdemux,a,12);
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_hdlr_handler: %c%c%c%c %c%c%c%c\n",GST_FOURCC_TO_CHARSEQ(a[1]),GST_FOURCC_TO_CHARSEQ(a[2]));
if (a[1]==GST_MAKE_FOURCC('m','h','l','r') && a[2]!=GST_MAKE_FOURCC('v','i','d','e')) {
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_hdlr_handler: rejecting the track\n");
/* forget about this track! */
free(track_to_be);
track_to_be = NULL;
gst_qtp_skip_container(qtdemux,GST_MAKE_FOURCC('t','r','a','k'));
}
return;
}
static void
gst_qtp_stsd_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter)
{
guint32 a[2];
gst_qtp_read_bytes(qtdemux,a,8);
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_stsd_handler: %d entries in the table\n",GUINT32_FROM_BE(a[1]));
/* just put the rest of the atom into sample description table */
track_to_be->stsd = gst_qtp_read(qtdemux,atom->start + atom->size - qtdemux->bs_pos);
}
static void
gst_qtp_stts_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter)
{
guint32 a[2];
gst_qtp_read_bytes(qtdemux,a,8);
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_stts_handler: %d entries in the table\n",GUINT32_FROM_BE(a[1]));
track_to_be->stts = gst_qtp_read(qtdemux,GUINT32_FROM_BE(a[1])*sizeof(GstQtpSttsRec));
}
static void
gst_qtp_stsc_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter)
{
guint32 a[2];
gst_qtp_read_bytes(qtdemux,a,8);
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_stsc_handler: %d entries in the table\n",GUINT32_FROM_BE(a[1]));
track_to_be->stsc = gst_qtp_read(qtdemux,GUINT32_FROM_BE(a[1])*sizeof(GstQtpStscRec));
}
static void
gst_qtp_stsz_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter)
{
guint32 a[3];
gst_qtp_read_bytes(qtdemux,a,12);
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_stsz_handler: %d entries in the table\n",GUINT32_FROM_BE(a[2]));
/* FIXME have to chech a[2], it contains size if all samples if they are the same size */
track_to_be->stsz = gst_qtp_read(qtdemux,GUINT32_FROM_BE(a[2])*sizeof(guint32));
}
static void
gst_qtp_stco_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter)
{
guint32 a[2];
gst_qtp_read_bytes(qtdemux,a,8);
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_stco_handler: %d entries in the table\n",GUINT32_FROM_BE(a[1]));
track_to_be->stco = gst_qtp_read(qtdemux,GUINT32_FROM_BE(a[1])*sizeof(guint32));
}
static void
gst_qtp_mdhd_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter)
{
guint32 a[4];
gst_qtp_read_bytes(qtdemux,a,16);
track_to_be->time_scale = GUINT32_FROM_BE(a[3]);
GST_INFO (GST_CAT_PLUGIN_INFO,"gst_qtp_mdhd_handler: time scale: %d\n",track_to_be->time_scale);
}
static gboolean
gst_qtp_traverse(gpointer poffs,gpointer value,gpointer data)
{
GstQtpSample * sample = (GstQtpSample*)value;
GstQTDemux * qtdemux = (GstQTDemux*)data;
if (qtdemux->bs_pos < sample->offset) {
gst_qtp_skip(qtdemux,sample->offset - qtdemux->bs_pos);
if (sample->track->pad && GST_PAD_IS_CONNECTED(sample->track->pad)) {
GstBuffer * buf;
buf = gst_qtp_read(qtdemux,sample->size);
GST_BUFFER_TIMESTAMP(buf) = sample->timestamp;
gst_pad_push(sample->track->pad,buf);
}
}
return FALSE; /* == keep going (TRUE to stop) */
}
static void
gst_qtp_mdat_handler (GstQTDemux * qtdemux,GstQtpAtom * atom,gboolean enter)
{
/* actually playing */
g_tree_foreach(qtdemux->samples,gst_qtp_traverse,qtdemux);
}