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gstreamer/gst/avi/gstavidemux.c
Wim Taymans 5b3c1cf7a5 Insert a yield operation. 
Original commit message from CVS:
Insert a yield operation.
2001-12-24 01:52:33 +00:00

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/* Gnome-Streamer
* 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.
*/
//#define GST_DEBUG_ENABLED
#include <string.h>
#include "gstavidemux.h"
/* elementfactory information */
static GstElementDetails gst_avi_demux_details = {
".avi parser",
"Parser/Video",
"Parse a .avi file into audio and video",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>\n"
"Wim Taymans <wim.taymans@tvd.be>",
"(C) 1999",
};
static GstCaps* avi_typefind (GstBuffer *buf, gpointer private);
/* typefactory for 'avi' */
static GstTypeDefinition avidefinition = {
"avidemux_video/avi",
"video/avi",
".avi",
avi_typefind,
};
/* AviDemux signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_BITRATE,
ARG_MEDIA_TIME,
ARG_CURRENT_TIME,
/* FILL ME */
};
GST_PADTEMPLATE_FACTORY (sink_templ,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"avidemux_sink",
"video/avi",
NULL
)
)
GST_PADTEMPLATE_FACTORY (src_video_templ,
"video_[00-32]",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"src_video",
"video/avi",
"format", GST_PROPS_LIST (
GST_PROPS_STRING ("strf_vids"),
GST_PROPS_STRING ("strf_iavs")
)
)
)
GST_PADTEMPLATE_FACTORY (src_audio_templ,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"src_audio",
"video/avi",
"format", GST_PROPS_STRING ("strf_auds")
)
)
static void gst_avi_demux_class_init (GstAviDemuxClass *klass);
static void gst_avi_demux_init (GstAviDemux *avi_demux);
static void gst_avi_demux_loop (GstElement *element);
static GstElementStateReturn
gst_avi_demux_change_state (GstElement *element);
static void gst_avi_demux_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static GstElementClass *parent_class = NULL;
//static guint gst_avi_demux_signals[LAST_SIGNAL] = { 0 };
GType
gst_avi_demux_get_type(void)
{
static GType avi_demux_type = 0;
if (!avi_demux_type) {
static const GTypeInfo avi_demux_info = {
sizeof(GstAviDemuxClass),
NULL,
NULL,
(GClassInitFunc)gst_avi_demux_class_init,
NULL,
NULL,
sizeof(GstAviDemux),
0,
(GInstanceInitFunc)gst_avi_demux_init,
};
avi_demux_type = g_type_register_static(GST_TYPE_ELEMENT, "GstAviDemux", &avi_demux_info, 0);
}
return avi_demux_type;
}
static void
gst_avi_demux_class_init (GstAviDemuxClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
g_object_class_install_property (G_OBJECT_CLASS(klass), ARG_BITRATE,
g_param_spec_long ("bitrate","bitrate","bitrate",
G_MINLONG, G_MAXLONG, 0, G_PARAM_READABLE)); // CHECKME
g_object_class_install_property (G_OBJECT_CLASS(klass), ARG_MEDIA_TIME,
g_param_spec_long ("media_time","media_time","media_time",
G_MINLONG, G_MAXLONG, 0, G_PARAM_READABLE)); // CHECKME
g_object_class_install_property (G_OBJECT_CLASS(klass), ARG_CURRENT_TIME,
g_param_spec_long ("current_time","current_time","current_time",
G_MINLONG, G_MAXLONG, 0, G_PARAM_READABLE)); // CHECKME
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->get_property = gst_avi_demux_get_property;
gstelement_class->change_state = gst_avi_demux_change_state;
}
static void
gst_avi_demux_init (GstAviDemux *avi_demux)
{
guint i;
GST_FLAG_SET (avi_demux, GST_ELEMENT_EVENT_AWARE);
avi_demux->sinkpad = gst_pad_new_from_template (
GST_PADTEMPLATE_GET (sink_templ), "sink");
gst_element_add_pad (GST_ELEMENT (avi_demux), avi_demux->sinkpad);
gst_element_set_loop_function (GST_ELEMENT (avi_demux), gst_avi_demux_loop);
avi_demux->state = GST_AVI_DEMUX_UNKNOWN;
avi_demux->num_audio_pads = 0;
avi_demux->num_video_pads = 0;
avi_demux->next_time = 0;
avi_demux->flags = 0;
avi_demux->index_entries = NULL;
avi_demux->index_size = 0;
avi_demux->resync_offset = 0;
//GST_FLAG_SET( GST_OBJECT (avi_demux), GST_ELEMENT_NO_SEEK);
for(i=0; i<GST_AVI_DEMUX_MAX_AUDIO_PADS; i++)
avi_demux->audio_pad[i] = NULL;
for(i=0; i<GST_AVI_DEMUX_MAX_VIDEO_PADS; i++)
avi_demux->video_pad[i] = NULL;
}
static GstCaps*
avi_typefind (GstBuffer *buf,
gpointer private)
{
gchar *data = GST_BUFFER_DATA (buf);
GstCaps *new;
GST_DEBUG (0,"avi_demux: typefind\n");
if (GUINT32_FROM_LE (((guint32 *)data)[0]) != GST_RIFF_TAG_RIFF)
return NULL;
if (GUINT32_FROM_LE (((guint32 *)data)[2]) != GST_RIFF_RIFF_AVI)
return NULL;
new = gst_caps_new ("avi_typefind","video/avi", NULL);
return new;
}
static gboolean
gst_avi_demux_avih (GstAviDemux *avi_demux)
{
gst_riff_avih *avih;
GstByteStream *bs = avi_demux->bs;
avih = (gst_riff_avih *) gst_bytestream_peek_bytes (bs, sizeof (gst_riff_avih));
if (avih) {
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: avih tag found");
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: us_frame %d", GUINT32_FROM_LE (avih->us_frame));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: max_bps %d", GUINT32_FROM_LE (avih->max_bps));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: pad_gran %d", GUINT32_FROM_LE (avih->pad_gran));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: flags 0x%08x", GUINT32_FROM_LE (avih->flags));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: tot_frames %d", GUINT32_FROM_LE (avih->tot_frames));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: init_frames %d", GUINT32_FROM_LE (avih->init_frames));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: streams %d", GUINT32_FROM_LE (avih->streams));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: bufsize %d", GUINT32_FROM_LE (avih->bufsize));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: width %d", GUINT32_FROM_LE (avih->width));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: height %d", GUINT32_FROM_LE (avih->height));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: scale %d", GUINT32_FROM_LE (avih->scale));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: rate %d", GUINT32_FROM_LE (avih->rate));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: start %d", GUINT32_FROM_LE (avih->start));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: length %d", GUINT32_FROM_LE (avih->length));
avi_demux->time_interval = GUINT32_FROM_LE (avih->us_frame);
avi_demux->tot_frames = GUINT32_FROM_LE (avih->tot_frames);
avi_demux->flags = GUINT32_FROM_LE (avih->flags);
return TRUE;
}
return FALSE;
}
static gboolean
gst_avi_demux_strh (GstAviDemux *avi_demux)
{
gst_riff_strh *strh;
GstByteStream *bs = avi_demux->bs;
strh = (gst_riff_strh *) gst_bytestream_peek_bytes (bs, sizeof (gst_riff_strh));
if (strh) {
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: strh tag found");
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: type 0x%08x (%s)",
GUINT32_FROM_LE (strh->type), gst_riff_id_to_fourcc (strh->type));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: fcc_handler 0x%08x (%s)",
GUINT32_FROM_LE (strh->fcc_handler), gst_riff_id_to_fourcc (strh->fcc_handler));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: flags 0x%08x", GUINT32_FROM_LE (strh->flags));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: priority %d", GUINT32_FROM_LE (strh->priority));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: init_frames %d", GUINT32_FROM_LE (strh->init_frames));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: scale %d", GUINT32_FROM_LE (strh->scale));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: rate %d", GUINT32_FROM_LE (strh->rate));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: start %d", GUINT32_FROM_LE (strh->start));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: length %d", GUINT32_FROM_LE (strh->length));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: bufsize %d", GUINT32_FROM_LE (strh->bufsize));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: quality %d", GUINT32_FROM_LE (strh->quality));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: samplesize %d", GUINT32_FROM_LE (strh->samplesize));
avi_demux->fcc_type = GUINT32_FROM_LE (strh->type);
return TRUE;
}
return FALSE;
}
static void
gst_avi_demux_strf_vids (GstAviDemux *avi_demux)
{
gst_riff_strf_vids *strf;
GstPad *srcpad;
GstByteStream *bs = avi_demux->bs;
strf = (gst_riff_strf_vids *) gst_bytestream_peek_bytes (bs, sizeof (gst_riff_strf_vids));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: strf tag found in context vids");
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: size %d", GUINT32_FROM_LE (strf->size));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: width %d", GUINT32_FROM_LE (strf->width));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: height %d", GUINT32_FROM_LE (strf->height));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: planes %d", GUINT16_FROM_LE (strf->planes));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: bit_cnt %d", GUINT16_FROM_LE (strf->bit_cnt));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: compression 0x%08x (%s)",
GUINT32_FROM_LE (strf->compression), gst_riff_id_to_fourcc (strf->compression));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: image_size %d", GUINT32_FROM_LE (strf->image_size));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: xpels_meter %d", GUINT32_FROM_LE (strf->xpels_meter));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: ypels_meter %d", GUINT32_FROM_LE (strf->ypels_meter));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: num_colors %d", GUINT32_FROM_LE (strf->num_colors));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: imp_colors %d", GUINT32_FROM_LE (strf->imp_colors));
srcpad = gst_pad_new_from_template (
GST_PADTEMPLATE_GET (src_video_templ), g_strdup_printf ("video_%02d",
avi_demux->num_video_pads));
gst_pad_set_caps (srcpad, gst_caps_new (
"avidec_video_src",
"video/avi",
gst_props_new (
"format", GST_PROPS_STRING ("strf_vids"),
"size", GST_PROPS_INT (GUINT32_FROM_LE (strf->size)),
"width", GST_PROPS_INT (GUINT32_FROM_LE (strf->width)),
"height", GST_PROPS_INT (GUINT32_FROM_LE (strf->height)),
"planes", GST_PROPS_INT (GUINT16_FROM_LE (strf->planes)),
"bit_cnt", GST_PROPS_INT (GUINT16_FROM_LE (strf->bit_cnt)),
"compression", GST_PROPS_FOURCC (GUINT32_FROM_LE (strf->compression)),
"image_size", GST_PROPS_INT (GUINT32_FROM_LE (strf->image_size)),
"xpels_meter", GST_PROPS_INT (GUINT32_FROM_LE (strf->xpels_meter)),
"ypels_meter", GST_PROPS_INT (GUINT32_FROM_LE (strf->ypels_meter)),
"num_colors", GST_PROPS_INT (GUINT32_FROM_LE (strf->num_colors)),
"imp_colors", GST_PROPS_INT (GUINT32_FROM_LE (strf->imp_colors)),
NULL)));
avi_demux->video_pad[avi_demux->num_video_pads++] = srcpad;
gst_element_add_pad (GST_ELEMENT (avi_demux), srcpad);
}
static void
gst_avi_demux_strf_auds (GstAviDemux *avi_demux)
{
gst_riff_strf_auds *strf;
GstPad *srcpad;
GstByteStream *bs = avi_demux->bs;
strf = (gst_riff_strf_auds *) gst_bytestream_peek_bytes (bs, sizeof (gst_riff_strf_auds));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: strf tag found in context auds");
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: format %d", GUINT16_FROM_LE (strf->format));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: channels %d", GUINT16_FROM_LE (strf->channels));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: rate %d", GUINT32_FROM_LE (strf->rate));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: av_bps %d", GUINT32_FROM_LE (strf->av_bps));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: blockalign %d", GUINT16_FROM_LE (strf->blockalign));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: size %d", GUINT16_FROM_LE (strf->size));
srcpad = gst_pad_new_from_template (
GST_PADTEMPLATE_GET (src_audio_templ), g_strdup_printf ("audio_%02d",
avi_demux->num_audio_pads));
gst_pad_set_caps (srcpad, gst_caps_new (
"avidec_audio_src",
"video/avi",
gst_props_new (
"format", GST_PROPS_STRING ("strf_auds"),
"fmt", GST_PROPS_INT (GUINT16_FROM_LE (strf->format)),
"channels", GST_PROPS_INT (GUINT16_FROM_LE (strf->channels)),
"rate", GST_PROPS_INT (GUINT32_FROM_LE (strf->rate)),
"av_bps", GST_PROPS_INT (GUINT32_FROM_LE (strf->av_bps)),
"blockalign", GST_PROPS_INT (GUINT16_FROM_LE (strf->blockalign)),
"size", GST_PROPS_INT (GUINT16_FROM_LE (strf->size)),
NULL)));
avi_demux->audio_pad[avi_demux->num_audio_pads++] = srcpad;
gst_element_add_pad (GST_ELEMENT (avi_demux), srcpad);
}
static void
gst_avi_demux_strf_iavs (GstAviDemux *avi_demux)
{
gst_riff_strf_iavs *strf;
GstPad *srcpad;
GstByteStream *bs = avi_demux->bs;
strf = (gst_riff_strf_iavs *) gst_bytestream_peek_bytes (bs, sizeof (gst_riff_strf_iavs));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: strf tag found in context iavs");
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVAAuxSrc %08x", GUINT32_FROM_LE (strf->DVAAuxSrc));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVAAuxCtl %08x", GUINT32_FROM_LE (strf->DVAAuxCtl));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVAAuxSrc1 %08x", GUINT32_FROM_LE (strf->DVAAuxSrc1));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVAAuxCtl1 %08x", GUINT32_FROM_LE (strf->DVAAuxCtl1));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVVAuxSrc %08x", GUINT32_FROM_LE (strf->DVVAuxSrc));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVVAuxCtl %08x", GUINT32_FROM_LE (strf->DVVAuxCtl));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVReserved1 %08x", GUINT32_FROM_LE (strf->DVReserved1));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVReserved2 %08x", GUINT32_FROM_LE (strf->DVReserved2));
srcpad = gst_pad_new_from_template (
GST_PADTEMPLATE_GET (src_video_templ), g_strdup_printf ("video_%02d",
avi_demux->num_video_pads));
gst_pad_set_caps (srcpad, gst_caps_new (
"avidec_iav_src",
"video/avi",
gst_props_new (
"format", GST_PROPS_STRING ("strf_iavs"),
"DVAAuxSrc", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVAAuxSrc)),
"DVAAuxCtl", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVAAuxCtl)),
"DVAAuxSrc1", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVAAuxSrc1)),
"DVAAuxCtl1", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVAAuxCtl1)),
"DVVAuxSrc", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVVAuxSrc)),
"DVVAuxCtl", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVVAuxCtl)),
"DVReserved1", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVReserved1)),
"DVReserved2", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVReserved2)),
NULL)));
avi_demux->video_pad[avi_demux->num_video_pads++] = srcpad;
gst_element_add_pad (GST_ELEMENT (avi_demux), srcpad);
}
static void
gst_avidemux_parse_index (GstAviDemux *avi_demux,
gulong offset)
{
GstBuffer *buf;
gulong index_size;
buf = gst_pad_pullregion (avi_demux->sinkpad, GST_REGION_OFFSET_LEN, offset, 8);
if (!buf || GST_BUFFER_OFFSET (buf) != offset || GST_BUFFER_SIZE (buf) != 8) {
GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: could not get index");
return;
}
if (gst_riff_fourcc_to_id (GST_BUFFER_DATA (buf)) != GST_RIFF_TAG_idx1) {
GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: no index found");
return;
}
index_size = GUINT32_FROM_LE(*(guint32 *)(GST_BUFFER_DATA (buf) + 4));
buf = gst_pad_pullregion(avi_demux->sinkpad, GST_REGION_OFFSET_LEN, offset+8, index_size);
avi_demux->index_size = index_size/sizeof(gst_riff_index_entry);
GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: index size %lu", avi_demux->index_size);
avi_demux->index_entries = g_malloc (GST_BUFFER_SIZE (buf));
memcpy (avi_demux->index_entries, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
buf = gst_pad_pullregion(avi_demux->sinkpad, GST_REGION_OFFSET_LEN, avi_demux->index_offset, 0);
}
static inline gboolean
gst_avidemux_read_chunk (GstByteStream *bs, guint32 *id, guint32 *size)
{
gst_riff_chunk *chunk;
chunk = (gst_riff_chunk *) gst_bytestream_peek_bytes (bs, sizeof (gst_riff_chunk));
if (chunk) {
*id = GUINT32_FROM_LE (chunk->id);
*size = GUINT32_FROM_LE (chunk->size);
gst_bytestream_flush (bs, sizeof (gst_riff_chunk));
return TRUE;
}
return FALSE;
}
static void
gst_avidemux_forall_pads (GstAviDemux *avi_demux, GFunc func, gpointer user_data)
{
gint i;
GstPad *pad;
for(i=0; i<GST_AVI_DEMUX_MAX_AUDIO_PADS; i++) {
pad = avi_demux->audio_pad[i];
if (pad && GST_PAD_CONNECTED (pad)) {
(*func) (pad, user_data);
}
}
for(i=0; i<GST_AVI_DEMUX_MAX_VIDEO_PADS; i++) {
pad = avi_demux->video_pad[i];
if (pad && GST_PAD_CONNECTED (pad)) {
(*func) (pad, user_data);
}
}
}
static gboolean
gst_avidemux_handle_event (GstAviDemux *avi_demux)
{
guint32 remaining;
GstEvent *event;
GstEventType type;
gst_bytestream_get_status (avi_demux->bs, &remaining, &event);
type = event? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
switch (type) {
case GST_EVENT_EOS:
gst_pad_event_default (avi_demux->sinkpad, event);
break;
case GST_EVENT_SEEK:
g_warning ("seek event\n");
break;
case GST_EVENT_FLUSH:
g_warning ("flush event\n");
break;
case GST_EVENT_DISCONTINUOUS:
g_warning ("discont event\n");
break;
default:
g_warning ("unhandled event %d\n", type);
break;
}
return TRUE;
}
static gboolean
gst_avidemux_process_chunk (GstAviDemux *avi_demux, guint64 filepos,
guint32 desired_tag,
gint rec_depth, guint32 *chunksize)
{
guint32 chunkid;
guint64 datapos;
GstByteStream *bs = avi_demux->bs;
if (!gst_avidemux_read_chunk (bs, &chunkid, chunksize)) {
printf (" ***** Error reading chunk at filepos 0x%08llx\n", filepos);
return FALSE;
}
if (desired_tag) { /* do we have to test identity? */
if (desired_tag != chunkid) {
printf ("\n\n *** Error: Expected chunk '%08x', found '%08x'\n",
desired_tag, chunkid);
return FALSE;
}
}
GST_INFO (GST_CAT_PLUGIN_INFO, "chunkid %s, size %08x, filepos %08llx",
gst_riff_id_to_fourcc (chunkid), *chunksize, filepos);
datapos = filepos + sizeof (guint32) + sizeof (guint32);
switch (chunkid) {
case GST_RIFF_TAG_RIFF:
case GST_RIFF_TAG_LIST:
{
guint32 datashowed;
guint32 subchunksize; /* size of a read subchunk */
// flush the form type
if (!gst_bytestream_flush (bs, sizeof (guint32)))
return FALSE;
datashowed = sizeof (guint32); /* we showed the form type */
datapos += datashowed; /* for the rest of the routine */
while (datashowed < *chunksize) { /* while not showed all: */
guint32 subchunklen; /* complete size of a subchunk */
/* recurse for subchunks of RIFF and LIST chunks: */
if (!gst_avidemux_process_chunk (avi_demux, datapos, 0,
rec_depth + 1, &subchunksize))
return FALSE;
subchunklen = sizeof (guint32) + sizeof (guint32) + ((subchunksize + 1) & ~1);
datashowed += subchunklen;
datapos += subchunklen;
}
*chunksize -= datashowed;
break;
}
case GST_RIFF_TAG_avih:
gst_avi_demux_avih (avi_demux);
break;
case GST_RIFF_TAG_strh:
{
gst_avi_demux_strh (avi_demux);
break;
}
case GST_RIFF_TAG_strf:
switch (avi_demux->fcc_type) {
case GST_RIFF_FCC_vids:
gst_avi_demux_strf_vids (avi_demux);
break;
case GST_RIFF_FCC_auds:
gst_avi_demux_strf_auds (avi_demux);
break;
case GST_RIFF_FCC_iavs:
gst_avi_demux_strf_iavs (avi_demux);
break;
case GST_RIFF_FCC_pads:
case GST_RIFF_FCC_txts:
default:
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux_chain: strh type %s not supported", gst_riff_id_to_fourcc (avi_demux->fcc_type));
break;
}
break;
case GST_RIFF_00dc:
case GST_RIFF_00db:
case GST_RIFF_00__:
{
GST_DEBUG (0,"gst_avi_demux_chain: tag found %08x size %08x\n",
chunkid, *chunksize);
if (GST_PAD_CONNECTED (avi_demux->video_pad[0])) {
GstBuffer *buf;
if (*chunksize) {
buf = gst_bytestream_peek (bs, *chunksize);
}
else {
buf = gst_buffer_new ();
}
GST_BUFFER_TIMESTAMP (buf) = avi_demux->next_time;
avi_demux->next_time += avi_demux->time_interval;
if (avi_demux->video_need_flush[0]) {
avi_demux->video_need_flush[0] = FALSE;
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLUSH);
}
GST_DEBUG (0,"gst_avi_demux_chain: send video buffer %08x\n", *chunksize);
gst_pad_push(avi_demux->video_pad[0], buf);
GST_DEBUG (0,"gst_avi_demux_chain: sent video buffer %08x %p\n",
*chunksize, &avi_demux->video_pad[0]);
avi_demux->current_frame++;
}
*chunksize = (*chunksize + 1) & ~1;
break;
}
case GST_RIFF_01wb:
{
GST_DEBUG (0,"gst_avi_demux_chain: tag found %08x size %08x\n",
chunkid, *chunksize);
if (GST_PAD_CONNECTED (avi_demux->audio_pad[0])) {
GstBuffer *buf;
if (*chunksize) {
buf = gst_bytestream_peek (bs, *chunksize);
}
else {
buf = gst_buffer_new ();
}
if (avi_demux->audio_need_flush[0]) {
GST_DEBUG (0,"audio flush\n");
avi_demux->audio_need_flush[0] = FALSE;
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLUSH);
}
GST_DEBUG (0,"gst_avi_demux_chain: send audio buffer %08x\n", *chunksize);
gst_pad_push (avi_demux->audio_pad[0], buf);
GST_DEBUG (0,"gst_avi_demux_chain: sent audio buffer %08x\n", *chunksize);
}
*chunksize = (*chunksize + 1) & ~1;
break;
}
default:
printf (" ***** unknown chunkid %08x (%s)\n", chunkid, gst_riff_id_to_fourcc (chunkid));
break;
}
GST_INFO (GST_CAT_PLUGIN_INFO, "chunkid %s, flush %08x, filepos %08llx",
gst_riff_id_to_fourcc (chunkid), *chunksize, filepos);
if (!gst_bytestream_flush (bs, *chunksize)) {
return gst_avidemux_handle_event (avi_demux);
}
/* we are running in an infinite loop, we need to _yield
* from time to time */
gst_element_yield (GST_ELEMENT (avi_demux));
return TRUE;
}
static void
gst_avi_demux_loop (GstElement *element)
{
GstAviDemux *avi_demux;
guint32 chunksize;
g_return_if_fail (element != NULL);
g_return_if_fail (GST_IS_AVI_DEMUX (element));
avi_demux = GST_AVI_DEMUX (element);
/* this is basically an infinite loop */
if (!gst_avidemux_process_chunk (avi_demux, 0, GST_RIFF_TAG_RIFF, 0, &chunksize)) {
gst_element_error (element, "This doesn't appear to be an AVI file");
}
}
static GstElementStateReturn
gst_avi_demux_change_state (GstElement *element)
{
GstAviDemux *avi_demux = GST_AVI_DEMUX (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_PAUSED:
avi_demux->bs = gst_bytestream_new (avi_demux->sinkpad);
break;
case GST_STATE_PAUSED_TO_PLAYING:
break;
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
gst_bytestream_destroy (avi_demux->bs);
break;
case GST_STATE_READY_TO_NULL:
break;
default:
break;
}
parent_class->change_state (element);
return GST_STATE_SUCCESS;
}
static void
gst_avi_demux_get_property (GObject *object, guint prop_id, GValue *value,
GParamSpec *pspec)
{
GstAviDemux *src;
g_return_if_fail (GST_IS_AVI_DEMUX (object));
src = GST_AVI_DEMUX (object);
switch (prop_id) {
case ARG_BITRATE:
break;
case ARG_MEDIA_TIME:
g_value_set_long (value, (src->tot_frames * src->time_interval) / 1000000);
break;
case ARG_CURRENT_TIME:
g_value_set_long (value, (src->current_frame * src->time_interval) / 1000000);
break;
default:
break;
}
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
GstTypeFactory *type;
/* this filter needs the riff parser */
if (!gst_library_load ("gstbytestream")) {
gst_info("avidemux: could not load support library: 'gstbytestream'\n");
return FALSE;
}
if (!gst_library_load ("gstriff")) {
gst_info("avidemux: could not load support library: 'gstriff'\n");
return FALSE;
}
/* create an elementfactory for the avi_demux element */
factory = gst_elementfactory_new ("avidemux",GST_TYPE_AVI_DEMUX,
&gst_avi_demux_details);
g_return_val_if_fail (factory != NULL, FALSE);
gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (src_audio_templ));
gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (src_video_templ));
gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (sink_templ));
type = gst_typefactory_new (&avidefinition);
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,
"avidemux",
plugin_init
};
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