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gst/qtdemux/: QtDemux can now work push-based.

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Original commit message from CVS:
* gst/qtdemux/Makefile.am:
* gst/qtdemux/qtdemux.c: (gst_qtdemux_init),
(gst_qtdemux_handle_sink_event), (gst_qtdemux_change_state),
(extract_initial_length_and_fourcc),
(gst_qtdemux_loop_state_header), (gst_qtdemux_loop_state_movie),
(gst_qtdemux_loop_header), (next_entry_size), (gst_qtdemux_chain),
(qtdemux_sink_activate), (qtdemux_sink_activate_pull),
(qtdemux_sink_activate_push), (qtdemux_parse_trak):
* gst/qtdemux/qtdemux.h:
QtDemux can now work push-based.
It still needs some love for seeking.
This commit is contained in:
Edward Hervey 2006-02-13 22:04:42 +00:00
parent ef7b89f382
commit 49f830d457
4 changed files with 491 additions and 227 deletions
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14
ChangeLog
View file

@ -1,3 +1,17 @@
2006-02-13 Edward Hervey <edward@fluendo.com>
* gst/qtdemux/Makefile.am:
* gst/qtdemux/qtdemux.c: (gst_qtdemux_init),
(gst_qtdemux_handle_sink_event), (gst_qtdemux_change_state),
(extract_initial_length_and_fourcc),
(gst_qtdemux_loop_state_header), (gst_qtdemux_loop_state_movie),
(gst_qtdemux_loop_header), (next_entry_size), (gst_qtdemux_chain),
(qtdemux_sink_activate), (qtdemux_sink_activate_pull),
(qtdemux_sink_activate_push), (qtdemux_parse_trak):
* gst/qtdemux/qtdemux.h:
QtDemux can now work push-based.
It still needs some love for seeking.
2006-02-13 Edgard Lima <edgard.lima@indt.org.br>
* configure.ac:

2
gst/qtdemux/Makefile.am
View file

@ -2,7 +2,7 @@
plugin_LTLIBRARIES = libgstqtdemux.la
libgstqtdemux_la_CFLAGS = ${GST_CFLAGS}
libgstqtdemux_la_LIBADD =
libgstqtdemux_la_LIBADD = $(GST_BASE_LIBS)
libgstqtdemux_la_LDFLAGS = ${GST_PLUGIN_LDFLAGS}
libgstqtdemux_la_SOURCES = qtdemux.c

693
gst/qtdemux/qtdemux.c
View file

@ -101,12 +101,9 @@ struct _QtDemuxStream
enum QtDemuxState
{
QTDEMUX_STATE_NULL,
QTDEMUX_STATE_HEADER,
QTDEMUX_STATE_HEADER_SEEKING,
QTDEMUX_STATE_SEEKING,
QTDEMUX_STATE_MOVIE,
QTDEMUX_STATE_SEEKING_EOS,
QTDEMUX_STATE_INITIAL, /* Initial state (haven't got the header yet) */
QTDEMUX_STATE_HEADER, /* Parsing the header */
QTDEMUX_STATE_MOVIE, /* Parsing/Playing the media data */
};
static GNode *qtdemux_tree_get_child_by_type (GNode * node, guint32 fourcc);
@ -146,8 +143,11 @@ static void gst_qtdemux_init (GstQTDemux * quicktime_demux);
static GstStateChangeReturn gst_qtdemux_change_state (GstElement * element,
GstStateChange transition);
static void gst_qtdemux_loop_header (GstPad * pad);
static GstFlowReturn gst_qtdemux_chain (GstPad * sinkpad, GstBuffer * inbuf);
static gboolean qtdemux_sink_activate (GstPad * sinkpad);
static gboolean qtdemux_sink_activate_pull (GstPad * sinkpad, gboolean active);
static gboolean qtdemux_sink_activate_push (GstPad * sinkpad, gboolean active);
static gboolean gst_qtdemux_handle_sink_event (GstPad * pad, GstEvent * event);
static void qtdemux_parse_moov (GstQTDemux * qtdemux, void *buffer, int length);
static void qtdemux_parse (GstQTDemux * qtdemux, GNode * node, void *buffer,
@ -230,10 +230,18 @@ gst_qtdemux_init (GstQTDemux * qtdemux)
gst_pad_set_activate_function (qtdemux->sinkpad, qtdemux_sink_activate);
gst_pad_set_activatepull_function (qtdemux->sinkpad,
qtdemux_sink_activate_pull);
gst_pad_set_activatepush_function (qtdemux->sinkpad,
qtdemux_sink_activate_push);
gst_pad_set_chain_function (qtdemux->sinkpad, gst_qtdemux_chain);
gst_pad_set_event_function (qtdemux->sinkpad, gst_qtdemux_handle_sink_event);
gst_element_add_pad (GST_ELEMENT (qtdemux), qtdemux->sinkpad);
qtdemux->state = QTDEMUX_STATE_HEADER;
qtdemux->state = QTDEMUX_STATE_INITIAL;
qtdemux->last_ts = GST_CLOCK_TIME_NONE;
qtdemux->pullbased = FALSE;
qtdemux->neededbytes = 16;
qtdemux->todrop = 0;
qtdemux->adapter = gst_adapter_new ();
}
#if 0
@ -454,44 +462,23 @@ GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
"Quicktime stream demuxer",
plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN);
#if 0
/* not needed, we don't work in streaming mode yet */
static gboolean
gst_qtdemux_handle_sink_event (GstQTDemux * qtdemux)
gst_qtdemux_handle_sink_event (GstPad * sinkpad, GstEvent * event)
{
gboolean res = TRUE;
guint32 remaining;
GstEvent *event;
GstEventType type;
GstQTDemux *demux = GST_QTDEMUX (GST_PAD_PARENT (sinkpad));
gboolean res = FALSE;
gst_bytestream_get_status (qtdemux->bs, &remaining, &event);
type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
GST_DEBUG ("qtdemux: event %p %d", event, type);
switch (type) {
case GST_EVENT_INTERRUPT:
gst_event_unref (event);
return FALSE;
case GST_EVENT_EOS:
gst_bytestream_flush (qtdemux->bs, remaining);
gst_pad_event_default (qtdemux->sinkpad, event);
return FALSE;
case GST_EVENT_FLUSH:
break;
case GST_EVENT_DISCONTINUOUS:
GST_DEBUG ("discontinuous event");
//gst_bytestream_flush_fast(qtdemux->bs, remaining);
break;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:
/* We need to convert it to a GST_FORMAT_TIME new segment */
default:
gst_pad_event_default (qtdemux->sinkpad, event);
gst_pad_event_default (demux->sinkpad, event);
return TRUE;
}
gst_event_unref (event);
return res;
}
#endif
static GstStateChangeReturn
gst_qtdemux_change_state (GstElement * element, GstStateChange transition)
@ -505,8 +492,13 @@ gst_qtdemux_change_state (GstElement * element, GstStateChange transition)
case GST_STATE_CHANGE_PAUSED_TO_READY:{
gint n;
qtdemux->state = QTDEMUX_STATE_HEADER;
qtdemux->state = QTDEMUX_STATE_INITIAL;
qtdemux->last_ts = GST_CLOCK_TIME_NONE;
qtdemux->neededbytes = 16;
qtdemux->todrop = 0;
qtdemux->pullbased = FALSE;
qtdemux->offset = 0;
gst_adapter_clear (qtdemux->adapter);
for (n = 0; n < qtdemux->n_streams; n++) {
gst_element_remove_pad (element, qtdemux->streams[n]->pad);
g_free (qtdemux->streams[n]->samples);
@ -525,212 +517,227 @@ gst_qtdemux_change_state (GstElement * element, GstStateChange transition)
}
static void
gst_qtdemux_loop_header (GstPad * pad)
extract_initial_length_and_fourcc (guint8 * data, guint32 * plength,
guint32 * pfourcc)
{
guint32 length;
guint32 fourcc;
length = GST_READ_UINT32_BE (data);
GST_DEBUG ("length %08x", length);
fourcc = GST_READ_UINT32_LE (data + 4);
GST_DEBUG ("atom type %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (fourcc));
if (length == 0) {
length = G_MAXUINT32;
}
if (length == 1) {
/* this means we have an extended size, which is the 64 bit value of
* the next 8 bytes */
guint32 length1, length2;
length1 = GST_READ_UINT32_BE (data + 8);
GST_DEBUG ("length1 %08x", length1);
length2 = GST_READ_UINT32_BE (data + 12);
GST_DEBUG ("length2 %08x", length2);
/* FIXME: I guess someone didn't want to make 64 bit size work :) */
length = length2;
}
if (plength)
*plength = length;
if (pfourcc)
*pfourcc = fourcc;
}
static GstFlowReturn
gst_qtdemux_loop_state_header (GstQTDemux * qtdemux)
{
GstQTDemux *qtdemux = GST_QTDEMUX (GST_OBJECT_PARENT (pad));
guint8 *data;
guint32 length;
guint32 fourcc;
GstBuffer *buf = NULL;
GstFlowReturn ret = GST_FLOW_OK;
guint64 cur_offset = qtdemux->offset;
ret = gst_pad_pull_range (qtdemux->sinkpad, cur_offset, 16, &buf);
if (ret != GST_FLOW_OK)
goto beach;
extract_initial_length_and_fourcc (GST_BUFFER_DATA (buf), &length, &fourcc);
gst_buffer_unref (buf);
switch (fourcc) {
case GST_MAKE_FOURCC ('m', 'd', 'a', 't'):
case GST_MAKE_FOURCC ('f', 'r', 'e', 'e'):
case GST_MAKE_FOURCC ('w', 'i', 'd', 'e'):
case GST_MAKE_FOURCC ('P', 'I', 'C', 'T'):
case GST_MAKE_FOURCC ('p', 'n', 'o', 't'):
goto ed_edd_and_eddy;
case GST_MAKE_FOURCC ('m', 'o', 'o', 'v'):{
GstBuffer *moov;
ret = gst_pad_pull_range (qtdemux->sinkpad, cur_offset, length, &moov);
if (ret != GST_FLOW_OK)
goto beach;
cur_offset += length;
qtdemux->offset += length;
qtdemux_parse_moov (qtdemux, GST_BUFFER_DATA (moov), length);
if (1) {
qtdemux_node_dump (qtdemux, qtdemux->moov_node);
}
qtdemux_parse_tree (qtdemux);
g_node_destroy (qtdemux->moov_node);
gst_buffer_unref (moov);
qtdemux->moov_node = NULL;
qtdemux->state = QTDEMUX_STATE_MOVIE;
GST_DEBUG_OBJECT (qtdemux, "switching state to STATE_MOVIE (%d)",
qtdemux->state);
}
break;
ed_edd_and_eddy:
default:{
GST_LOG ("unknown %08x '%" GST_FOURCC_FORMAT "' at %d",
fourcc, GST_FOURCC_ARGS (fourcc), cur_offset);
cur_offset += length;
qtdemux->offset += length;
break;
}
}
beach:
return ret;
}
static GstFlowReturn
gst_qtdemux_loop_state_movie (GstQTDemux * qtdemux)
{
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *buf = NULL;
QtDemuxStream *stream;
guint64 min_time;
guint64 offset;
guint64 cur_offset;
int size;
GstFlowReturn ret;
int index = -1;
int i;
/* Figure out the next stream sample to output */
min_time = G_MAXUINT64;
for (i = 0; i < qtdemux->n_streams; i++) {
stream = qtdemux->streams[i];
GST_LOG_OBJECT (qtdemux,
"stream %d: sample_index %d, timestamp %" GST_TIME_FORMAT, i,
stream->sample_index,
GST_TIME_ARGS (stream->samples[stream->sample_index].timestamp));
if (stream->sample_index < stream->n_samples
&& stream->samples[stream->sample_index].timestamp < min_time) {
min_time = stream->samples[stream->sample_index].timestamp;
index = i;
}
}
if (index == -1) {
GST_DEBUG_OBJECT (qtdemux, "No samples left for any streams - EOS");
gst_pad_event_default (qtdemux->sinkpad, gst_event_new_eos ());
goto beach;
}
stream = qtdemux->streams[index];
offset = stream->samples[stream->sample_index].offset;
size = stream->samples[stream->sample_index].size;
GST_LOG_OBJECT (qtdemux,
"pushing from stream %d, sample_index=%d offset=%" G_GUINT64_FORMAT
",size=%d timestamp=%" GST_TIME_FORMAT,
index, stream->sample_index, offset, size,
GST_TIME_ARGS (stream->samples[stream->sample_index].timestamp));
buf = NULL;
if (size > 0) {
GST_LOG_OBJECT (qtdemux, "reading %d bytes @ %" G_GUINT64_FORMAT, size,
offset);
ret = gst_pad_pull_range (qtdemux->sinkpad, offset, size, &buf);
if (ret != GST_FLOW_OK)
goto beach;
}
if (buf) {
/* hum... FIXME changing framerate breaks horribly, better set
* an average framerate, or get rid of the framerate property. */
if (stream->subtype == GST_MAKE_FOURCC ('v', 'i', 'd', 'e')) {
//float fps =
// 1. * GST_SECOND / stream->samples[stream->sample_index].duration;
/*
if (fps != stream->fps) {
gst_caps_set_simple (stream->caps, "framerate", G_TYPE_DOUBLE, fps,
NULL);
stream->fps = fps;
gst_pad_set_explicit_caps (stream->pad, stream->caps);
}
*/
}
/* first buffer? */
if (qtdemux->last_ts == GST_CLOCK_TIME_NONE) {
gst_qtdemux_send_event (qtdemux,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME,
0, GST_CLOCK_TIME_NONE, 0));
}
/* timestamps of AMR aren't known... */
if (stream->fourcc != GST_MAKE_FOURCC ('s', 'a', 'm', 'r')) {
GST_BUFFER_TIMESTAMP (buf) =
stream->samples[stream->sample_index].timestamp;
qtdemux->last_ts = GST_BUFFER_TIMESTAMP (buf);
GST_BUFFER_DURATION (buf) = gst_util_uint64_scale_int
(stream->samples[stream->sample_index].duration, GST_SECOND,
stream->timescale);
} else {
if (stream->sample_index == 0) {
GST_BUFFER_TIMESTAMP (buf) = 0;
}
}
GST_LOG_OBJECT (qtdemux,
"Pushing buffer with time %" GST_TIME_FORMAT " on pad %p",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), stream->pad);
gst_buffer_set_caps (buf, stream->caps);
ret = gst_pad_push (stream->pad, buf);
}
stream->sample_index++;
beach:
return ret;
}
static void
gst_qtdemux_loop_header (GstPad * pad)
{
GstQTDemux *qtdemux = GST_QTDEMUX (GST_OBJECT_PARENT (pad));
guint64 cur_offset;
GstFlowReturn ret = GST_FLOW_ERROR;
cur_offset = qtdemux->offset;
GST_LOG_OBJECT (qtdemux, "loop at position %" G_GUINT64_FORMAT ", state %d",
cur_offset, qtdemux->state);
switch (qtdemux->state) {
case QTDEMUX_STATE_HEADER:{
ret = gst_pad_pull_range (qtdemux->sinkpad, cur_offset, 16, &buf);
if (ret != GST_FLOW_OK)
goto error;
data = GST_BUFFER_DATA (buf);
length = GST_READ_UINT32_BE (data);
GST_DEBUG ("length %08x", length);
fourcc = GST_READ_UINT32_LE (data + 4);
GST_DEBUG ("atom type %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (fourcc));
gst_buffer_unref (buf);
if (length == 0) {
length = G_MAXUINT32; //gst_bytestream_length (qtdemux->bs) - cur_offset;
}
if (length == 1) {
/* this means we have an extended size, which is the 64 bit value of
* the next 8 bytes */
guint32 length1, length2;
length1 = GST_READ_UINT32_BE (data + 8);
GST_DEBUG ("length1 %08x", length1);
length2 = GST_READ_UINT32_BE (data + 12);
GST_DEBUG ("length2 %08x", length2);
/* FIXME: I guess someone didn't want to make 64 bit size work :) */
length = length2;
}
switch (fourcc) {
case GST_MAKE_FOURCC ('m', 'd', 'a', 't'):
case GST_MAKE_FOURCC ('f', 'r', 'e', 'e'):
case GST_MAKE_FOURCC ('w', 'i', 'd', 'e'):
case GST_MAKE_FOURCC ('P', 'I', 'C', 'T'):
case GST_MAKE_FOURCC ('p', 'n', 'o', 't'):
goto ed_edd_and_eddy;
case GST_MAKE_FOURCC ('m', 'o', 'o', 'v'):{
GstBuffer *moov;
ret =
gst_pad_pull_range (qtdemux->sinkpad, cur_offset, length, &moov);
if (ret != GST_FLOW_OK)
goto error;
cur_offset += length;
qtdemux->offset += length;
qtdemux_parse_moov (qtdemux, GST_BUFFER_DATA (moov), length);
if (1) {
qtdemux_node_dump (qtdemux, qtdemux->moov_node);
}
qtdemux_parse_tree (qtdemux);
g_node_destroy (qtdemux->moov_node);
gst_buffer_unref (moov);
qtdemux->moov_node = NULL;
qtdemux->state = QTDEMUX_STATE_MOVIE;
GST_DEBUG_OBJECT (qtdemux, "switching state to STATE_MOVIE (%d)",
qtdemux->state);
break;
}
ed_edd_and_eddy:
default:{
GST_LOG ("unknown %08x '%" GST_FOURCC_FORMAT "' at %d",
fourcc, GST_FOURCC_ARGS (fourcc), cur_offset);
cur_offset += length;
qtdemux->offset += length;
break;
}
}
#if 0
ret = gst_bytestream_seek (qtdemux->bs, cur_offset + length,
GST_SEEK_METHOD_SET);
GST_DEBUG ("seek returned %d", ret);
if (ret == FALSE) {
length = cur_offset + length;
cur_offset = qtdemux->offset;
length -= cur_offset;
if (gst_bytestream_flush (qtdemux->bs, length) == FALSE) {
if (!gst_qtdemux_handle_sink_event (qtdemux)) {
return;
}
}
}
#endif
//qtdemux->offset = cur_offset + length;
case QTDEMUX_STATE_INITIAL:
case QTDEMUX_STATE_HEADER:
ret = gst_qtdemux_loop_state_header (qtdemux);
break;
}
case QTDEMUX_STATE_MOVIE:{
QtDemuxStream *stream;
guint64 min_time;
int index = -1;
int i;
min_time = G_MAXUINT64;
for (i = 0; i < qtdemux->n_streams; i++) {
stream = qtdemux->streams[i];
GST_LOG_OBJECT (qtdemux,
"stream %d: sample_index %d, timestamp %" GST_TIME_FORMAT, i,
stream->sample_index,
GST_TIME_ARGS (stream->samples[stream->sample_index].timestamp));
if (stream->sample_index < stream->n_samples
&& stream->samples[stream->sample_index].timestamp < min_time) {
min_time = stream->samples[stream->sample_index].timestamp;
index = i;
}
}
if (index == -1) {
GST_DEBUG_OBJECT (qtdemux, "No samples left for any streams - EOS");
gst_pad_event_default (qtdemux->sinkpad, gst_event_new_eos ());
break;
}
stream = qtdemux->streams[index];
offset = stream->samples[stream->sample_index].offset;
size = stream->samples[stream->sample_index].size;
GST_LOG_OBJECT (qtdemux,
"pushing from stream %d, sample_index=%d offset=%" G_GUINT64_FORMAT
",size=%d timestamp=%" GST_TIME_FORMAT,
index, stream->sample_index, offset, size,
GST_TIME_ARGS (stream->samples[stream->sample_index].timestamp));
buf = NULL;
if (size > 0) {
GST_LOG_OBJECT (qtdemux, "reading %d bytes @ %" G_GUINT64_FORMAT, size,
offset);
ret = gst_pad_pull_range (qtdemux->sinkpad, offset, size, &buf);
if (ret != GST_FLOW_OK)
goto error;
}
if (buf) {
/* hum... FIXME changing framerate breaks horribly, better set
* an average framerate, or get rid of the framerate property. */
if (stream->subtype == GST_MAKE_FOURCC ('v', 'i', 'd', 'e')) {
//float fps =
// 1. * GST_SECOND / stream->samples[stream->sample_index].duration;
/*
if (fps != stream->fps) {
gst_caps_set_simple (stream->caps, "framerate", G_TYPE_DOUBLE, fps,
NULL);
stream->fps = fps;
gst_pad_set_explicit_caps (stream->pad, stream->caps);
}
*/
}
/* first buffer? */
if (qtdemux->last_ts == GST_CLOCK_TIME_NONE) {
gst_qtdemux_send_event (qtdemux,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME,
0, GST_CLOCK_TIME_NONE, 0));
}
/* timestamps of AMR aren't known... */
if (stream->fourcc != GST_MAKE_FOURCC ('s', 'a', 'm', 'r')) {
GST_BUFFER_TIMESTAMP (buf) =
stream->samples[stream->sample_index].timestamp;
qtdemux->last_ts = GST_BUFFER_TIMESTAMP (buf);
GST_BUFFER_DURATION (buf) = gst_util_uint64_scale_int
(stream->samples[stream->sample_index].duration, GST_SECOND,
stream->timescale);
} else {
if (stream->sample_index == 0) {
GST_BUFFER_TIMESTAMP (buf) = 0;
}
}
GST_LOG_OBJECT (qtdemux,
"Pushing buffer with time %" GST_TIME_FORMAT " on pad %p",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)), stream->pad);
gst_buffer_set_caps (buf, stream->caps);
ret = gst_pad_push (stream->pad, buf);
if (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)
goto error;
}
stream->sample_index++;
case QTDEMUX_STATE_MOVIE:
ret = gst_qtdemux_loop_state_movie (qtdemux);
break;
}
default:
/* oh crap */
g_error ("State=%d", qtdemux->state);
}
return;
error:
{
if (ret != GST_FLOW_OK) {
GST_LOG_OBJECT (qtdemux, "pausing task, reason %s",
gst_flow_get_name (ret));
gst_pad_pause_task (qtdemux->sinkpad);
@ -739,24 +746,244 @@ error:
GST_ELEMENT_ERROR (qtdemux, STREAM, FAILED,
(NULL), ("stream stopped, reason %s", gst_flow_get_name (ret)));
}
return;
}
}
/*
next_entry_size
Returns the size of the first entry at the current offset.
If -1, there are none (which means EOS or empty file).
*/
static guint64
next_entry_size (GstQTDemux * demux)
{
QtDemuxStream *stream;
int i;
int smallidx = 0;
guint64 smalloffs = -1;
GST_LOG_OBJECT (demux, "Finding entry at offset %lld", demux->offset);
for (i = 0; i < demux->n_streams; i++) {
stream = demux->streams[i];
GST_LOG_OBJECT (demux,
"Checking Stream %d (sample_index:%d / offset:%lld / size:%d / chunk:%d)",
i, stream->sample_index, stream->samples[stream->sample_index].offset,
stream->samples[stream->sample_index].size,
stream->samples[stream->sample_index].chunk);
if ((smalloffs == -1)
|| (stream->samples[stream->sample_index].offset < smalloffs)) {
smallidx = i;
smalloffs = stream->samples[stream->sample_index].offset;
}
}
GST_LOG_OBJECT (demux, "stream %d offset %lld demux->offset :%lld",
smallidx, smalloffs, demux->offset);
stream = demux->streams[smallidx];
if (stream->samples[stream->sample_index].offset >= demux->offset) {
demux->todrop =
stream->samples[stream->sample_index].offset - demux->offset;
return stream->samples[stream->sample_index].size + demux->todrop;
}
GST_DEBUG_OBJECT (demux, "There wasn't any entry at offset %lld",
demux->offset);
return -1;
}
static GstFlowReturn
gst_qtdemux_chain (GstPad * sinkpad, GstBuffer * inbuf)
{
GstQTDemux *demux = GST_QTDEMUX (GST_PAD_PARENT (sinkpad));
GstFlowReturn ret = GST_FLOW_OK;
gst_adapter_push (demux->adapter, inbuf);
GST_DEBUG_OBJECT (demux, "pushing in inbuf %p, neededbytes:%u, available:%u",
inbuf, demux->neededbytes, gst_adapter_available (demux->adapter));
while (((gst_adapter_available (demux->adapter)) >= demux->neededbytes) &&
ret == GST_FLOW_OK) {
GST_DEBUG_OBJECT (demux,
"state:%d , demux->neededbytes:%d, demux->offset:%lld", demux->state,
demux->neededbytes, demux->offset);
switch (demux->state) {
case QTDEMUX_STATE_INITIAL:{
const guint8 *data;
guint32 fourcc;
guint32 size;
data = gst_adapter_peek (demux->adapter, demux->neededbytes);
/* get fourcc/length, set neededbytes */
extract_initial_length_and_fourcc ((guint8 *) data, &size, &fourcc);
if (fourcc == GST_MAKE_FOURCC ('m', 'd', 'a', 't')) {
demux->state = QTDEMUX_STATE_MOVIE;
demux->offset += 24;
gst_adapter_flush (demux->adapter, 24);
demux->neededbytes = next_entry_size (demux);
} else {
demux->neededbytes = size;
demux->state = QTDEMUX_STATE_HEADER;
}
}
break;
case QTDEMUX_STATE_HEADER:{
guint8 *data;
guint32 fourcc;
GST_DEBUG_OBJECT (demux, "In header");
data = gst_adapter_take (demux->adapter, demux->neededbytes);
/* parse the header */
extract_initial_length_and_fourcc (data, NULL, &fourcc);
if (fourcc == GST_MAKE_FOURCC ('m', 'o', 'o', 'v')) {
GST_DEBUG_OBJECT (demux, "Parsing [moov]");
demux->offset += demux->neededbytes;
qtdemux_parse_moov (demux, data, demux->neededbytes);
qtdemux_node_dump (demux, demux->moov_node);
qtdemux_parse_tree (demux);
g_node_destroy (demux->moov_node);
g_free (data);
demux->moov_node = NULL;
demux->neededbytes = 16;
demux->state = QTDEMUX_STATE_INITIAL;
} else {
GST_WARNING_OBJECT (demux,
"Unknown fourcc while parsing header : %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (fourcc));
/* Let's jump that one and go back to initial state */
demux->offset += demux->neededbytes;
demux->neededbytes = 16;
demux->state = QTDEMUX_STATE_INITIAL;
}
}
break;
case QTDEMUX_STATE_MOVIE:{
guint8 *data;
GstBuffer *outbuf;
QtDemuxStream *stream = NULL;
int i = -1;
GST_DEBUG_OBJECT (demux, "BEGIN // in MOVIE for offset %lld",
demux->offset);
if (demux->todrop) {
gst_adapter_flush (demux->adapter, demux->todrop);
demux->neededbytes -= demux->todrop;
demux->offset += demux->todrop;
}
/* Figure out which stream this is packet belongs to */
for (i = 0; i < demux->n_streams; i++) {
stream = demux->streams[i];
GST_LOG_OBJECT (demux,
"Checking stream %d (sample_index:%d / offset:%lld / size:%d / chunk:%d)",
i, stream->sample_index,
stream->samples[stream->sample_index].offset,
stream->samples[stream->sample_index].size,
stream->samples[stream->sample_index].chunk);
if (stream->samples[stream->sample_index].offset == demux->offset)
break;
}
if (stream == NULL) {
GST_WARNING_OBJECT (demux, "WHAT THE FUCK ?");
ret = GST_FLOW_ERROR;
break;
}
/* first buffer? */
/* FIXME : this should be handled in sink_event */
if (demux->last_ts == GST_CLOCK_TIME_NONE) {
gst_qtdemux_send_event (demux,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME,
0, GST_CLOCK_TIME_NONE, 0));
}
/* get data */
data = gst_adapter_take (demux->adapter, demux->neededbytes);
/* Put data in a buffer, set timestamps, caps, ... */
outbuf = gst_buffer_new ();
gst_buffer_set_data (outbuf, data, demux->neededbytes);
GST_DEBUG_OBJECT (demux, "stream : %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (stream->fourcc));
if (stream->fourcc != GST_MAKE_FOURCC ('s', 'a', 'm', 'r')) {
GST_BUFFER_TIMESTAMP (outbuf) =
stream->samples[stream->sample_index].timestamp;
demux->last_ts = GST_BUFFER_TIMESTAMP (outbuf);
GST_BUFFER_DURATION (outbuf) = gst_util_uint64_scale_int
(stream->samples[stream->sample_index].duration, GST_SECOND,
stream->timescale);
} else {
if (stream->sample_index == 0)
GST_BUFFER_TIMESTAMP (outbuf) = 0;
}
/* send buffer */
GST_LOG_OBJECT (demux,
"Pushing buffer with time %" GST_TIME_FORMAT " on pad %p",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)), stream->pad);
gst_buffer_set_caps (outbuf, stream->caps);
ret = gst_pad_push (stream->pad, outbuf);
stream->sample_index++;
/* update current offset and figure out size of next buffer */
GST_LOG_OBJECT (demux, "bumping offset:%lld up by %lld",
demux->offset, demux->neededbytes);
demux->offset += demux->neededbytes;
GST_LOG_OBJECT (demux, "offset is now %lld", demux->offset);
if ((demux->neededbytes = next_entry_size (demux)) == -1)
ret = GST_FLOW_ERROR;
}
break;
default:
g_warning ("This line should never be reached\n");
ret = GST_FLOW_ERROR;
}
}
return ret;
}
static gboolean
qtdemux_sink_activate (GstPad * sinkpad)
{
if (gst_pad_check_pull_range (sinkpad))
return gst_pad_activate_pull (sinkpad, TRUE);
return FALSE;
else
return gst_pad_activate_push (sinkpad, TRUE);
}
static gboolean
qtdemux_sink_activate_pull (GstPad * sinkpad, gboolean active)
{
GstQTDemux *demux = GST_QTDEMUX (GST_PAD_PARENT (sinkpad));
if (active) {
/* if we have a scheduler we can start the task */
demux->pullbased = TRUE;
gst_pad_start_task (sinkpad,
(GstTaskFunction) gst_qtdemux_loop_header, sinkpad);
} else {
@ -766,6 +993,16 @@ qtdemux_sink_activate_pull (GstPad * sinkpad, gboolean active)
return TRUE;
}
static gboolean
qtdemux_sink_activate_push (GstPad * sinkpad, gboolean active)
{
GstQTDemux *demux = GST_QTDEMUX (GST_PAD_PARENT (sinkpad));
demux->pullbased = FALSE;
return TRUE;
}
void
gst_qtdemux_add_stream (GstQTDemux * qtdemux,
QtDemuxStream * stream, GstTagList * list)
@ -2296,6 +2533,8 @@ qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak)
chunk_offset = QTDEMUX_GUINT64_GET (co64->data + 16 + j * 8);
}
for (k = 0; k < samples_per_chunk; k++) {
GST_LOG_OBJECT (qtdemux, "Creating entry %d with offset %lld",
index, chunk_offset);
samples[index].chunk = j;
samples[index].offset = chunk_offset;
chunk_offset += samples[index].size;
@ -2380,6 +2619,8 @@ qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak)
GST_LOG_OBJECT (qtdemux, "co64 chunk %d offset %" G_GUINT64_FORMAT, j,
chunk_offset);
}
GST_LOG_OBJECT (qtdemux, "Creating entry %d with offset %lld",
j, chunk_offset);
samples[j].chunk = j;
samples[j].offset = chunk_offset;
if (stream->samples_per_packet * stream->compression != 0)

9
gst/qtdemux/qtdemux.h
View file

@ -22,6 +22,7 @@
#define __GST_QTDEMUX_H__
#include <gst/gst.h>
#include <gst/base/gstadapter.h>
G_BEGIN_DECLS
@ -61,6 +62,14 @@ struct _GstQTDemux {
int state;
gboolean pullbased;
/* push based variables */
guint neededbytes;
guint todrop;
GstAdapter *adapter;
/* offset of the media data (i.e.: Size of header) */
guint64 offset;
GstTagList *tag_list;