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gstreamer/gst/avi/gstavidemux.c
Wim Taymans d9b0cf77a2 Separate the movi processing loop from the index/entry parsing loop 
Original commit message from CVS:
Separate the movi processing loop from the index/entry parsing loop
Detect when the index starts from 0 or from the movi chunck offset
2002-06-18 19:17:04 +00:00

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46 KiB
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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
*
* 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 demuxer",
"Codec/Demuxer",
"Demultiplex an 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_type_find (GstBuffer *buf, gpointer private);
/* typefactory for 'avi' */
static GstTypeDefinition avidefinition = {
"avidemux_video/avi",
"video/avi",
".avi",
avi_type_find,
};
/* AviDemux signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_BITRATE,
/* FILL ME */
};
GST_PAD_TEMPLATE_FACTORY (sink_templ,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"avidemux_sink",
"video/avi",
"format", GST_PROPS_STRING ("AVI")
)
)
GST_PAD_TEMPLATE_FACTORY (src_video_templ,
"video_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_CAPS_NEW (
"avidemux_src_video",
"video/avi",
"format", GST_PROPS_LIST (
GST_PROPS_STRING ("strf_vids"),
GST_PROPS_STRING ("strf_iavs")
),
"width", GST_PROPS_INT_RANGE (16, 4096),
"height", GST_PROPS_INT_RANGE (16, 4096)
),
GST_CAPS_NEW (
"avidemux_src_video",
"video/raw",
"format", GST_PROPS_LIST (
GST_PROPS_FOURCC (GST_MAKE_FOURCC('Y','U','Y','2')),
GST_PROPS_FOURCC (GST_MAKE_FOURCC('I','4','2','0'))
),
"width", GST_PROPS_INT_RANGE (16, 4096),
"height", GST_PROPS_INT_RANGE (16, 4096)
),
GST_CAPS_NEW (
"avidemux_src_video",
"video/jpeg",
"width", GST_PROPS_INT_RANGE (16, 4096),
"height", GST_PROPS_INT_RANGE (16, 4096)
),
GST_CAPS_NEW (
"avidemux_src_video",
"video/dv",
"format", GST_PROPS_LIST (
GST_PROPS_STRING ("NTSC"),
GST_PROPS_STRING ("PAL")
),
"width", GST_PROPS_INT_RANGE (16, 4096),
"height", GST_PROPS_INT_RANGE (16, 4096)
)
)
GST_PAD_TEMPLATE_FACTORY (src_audio_templ,
"audio_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_CAPS_NEW (
"avidemux_src_audio",
"video/avi",
"format", GST_PROPS_STRING ("strf_auds")
),
GST_CAPS_NEW (
"avidemux_src_audio",
"audio/raw",
"format", GST_PROPS_STRING ("int"),
"law", GST_PROPS_INT (0),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_LIST (
GST_PROPS_BOOLEAN (TRUE),
GST_PROPS_BOOLEAN (FALSE)
),
"width", GST_PROPS_LIST (
GST_PROPS_INT (8),
GST_PROPS_INT (16)
),
"depth", GST_PROPS_LIST (
GST_PROPS_INT (8),
GST_PROPS_INT (16)
),
"rate", GST_PROPS_INT_RANGE (11025, 44100),
"channels", GST_PROPS_INT_RANGE (1, 2)
),
GST_CAPS_NEW (
"avidemux_src_audio",
"audio/mp3",
NULL
)
)
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 gboolean gst_avi_demux_process_chunk (GstAviDemux *avi_demux, guint64 *filepos,
guint32 desired_tag,
gint rec_depth, guint32 *chunksize);
static gboolean gst_avi_demux_send_event (GstElement *element, GstEvent *event);
static gboolean gst_avi_demux_handle_src_event (GstPad *pad, GstEvent *event);
static gboolean gst_avi_demux_handle_src_query (GstPad *pad, GstPadQueryType type,
GstFormat *format, gint64 *value);
static gboolean gst_avi_demux_src_convert (GstPad *pad, GstFormat src_format, gint64 src_value,
GstFormat *dest_format, gint64 *dest_value);
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 */
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;
gstelement_class->send_event = gst_avi_demux_send_event;
}
static void
gst_avi_demux_init (GstAviDemux *avi_demux)
{
GST_FLAG_SET (avi_demux, GST_ELEMENT_EVENT_AWARE);
avi_demux->sinkpad = gst_pad_new_from_template (
GST_PAD_TEMPLATE_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->num_streams = 0;
avi_demux->num_v_streams = 0;
avi_demux->num_a_streams = 0;
avi_demux->index_entries = NULL;
avi_demux->index_size = 0;
avi_demux->seek_pending = 0;
avi_demux->restart = FALSE;
}
static GstCaps*
avi_type_find (GstBuffer *buf,
gpointer private)
{
gchar *data = GST_BUFFER_DATA (buf);
GstCaps *new;
GST_DEBUG (0,"avi_demux: typefind");
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_type_find",
"video/avi",
"format", GST_PROPS_STRING ("AVI"));
return new;
}
static gboolean
gst_avi_demux_avih (GstAviDemux *avi_demux)
{
gst_riff_avih *avih;
guint32 got_bytes;
GstByteStream *bs = avi_demux->bs;
got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&avih, sizeof (gst_riff_avih));
if (got_bytes == sizeof (gst_riff_avih)) {
avi_demux->avih.us_frame = GUINT32_FROM_LE (avih->us_frame);
avi_demux->avih.max_bps = GUINT32_FROM_LE (avih->max_bps);
avi_demux->avih.pad_gran = GUINT32_FROM_LE (avih->pad_gran);
avi_demux->avih.flags = GUINT32_FROM_LE (avih->flags);
avi_demux->avih.tot_frames = GUINT32_FROM_LE (avih->tot_frames);
avi_demux->avih.init_frames = GUINT32_FROM_LE (avih->init_frames);
avi_demux->avih.streams = GUINT32_FROM_LE (avih->streams);
avi_demux->avih.bufsize = GUINT32_FROM_LE (avih->bufsize);
avi_demux->avih.width = GUINT32_FROM_LE (avih->width);
avi_demux->avih.height = GUINT32_FROM_LE (avih->height);
avi_demux->avih.scale = GUINT32_FROM_LE (avih->scale);
avi_demux->avih.rate = GUINT32_FROM_LE (avih->rate);
avi_demux->avih.start = GUINT32_FROM_LE (avih->start);
avi_demux->avih.length = GUINT32_FROM_LE (avih->length);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: avih tag found");
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: us_frame %d", avi_demux->avih.us_frame);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: max_bps %d", avi_demux->avih.max_bps);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: pad_gran %d", avi_demux->avih.pad_gran);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: flags 0x%08x", avi_demux->avih.flags);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: tot_frames %d", avi_demux->avih.tot_frames);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: init_frames %d", avi_demux->avih.init_frames);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: streams %d", avi_demux->avih.streams);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: bufsize %d", avi_demux->avih.bufsize);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: width %d", avi_demux->avih.width);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: height %d", avi_demux->avih.height);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: scale %d", avi_demux->avih.scale);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: rate %d", avi_demux->avih.rate);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: start %d", avi_demux->avih.start);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: length %d", avi_demux->avih.length);
return TRUE;
}
return FALSE;
}
static gboolean
gst_avi_demux_strh (GstAviDemux *avi_demux)
{
gst_riff_strh *strh;
GstByteStream *bs = avi_demux->bs;
guint32 got_bytes;
got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&strh, sizeof (gst_riff_strh));
if (got_bytes == sizeof (gst_riff_strh)) {
avi_stream_context *target;
avi_demux->fcc_type = GUINT32_FROM_LE (strh->type);
target = &avi_demux->stream[avi_demux->num_streams];
target->num = avi_demux->num_streams;
target->strh.type = avi_demux->fcc_type;
target->strh.fcc_handler = GUINT32_FROM_LE (strh->fcc_handler);
target->strh.flags = GUINT32_FROM_LE (strh->flags);
target->strh.priority = GUINT32_FROM_LE (strh->priority);
target->strh.init_frames = GUINT32_FROM_LE (strh->init_frames);
target->strh.scale = GUINT32_FROM_LE (strh->scale);
target->strh.rate = GUINT32_FROM_LE (strh->rate);
target->strh.start = GUINT32_FROM_LE (strh->start);
target->strh.length = GUINT32_FROM_LE (strh->length);
target->strh.bufsize = GUINT32_FROM_LE (strh->bufsize);
target->strh.quality = GUINT32_FROM_LE (strh->quality);
target->strh.samplesize = GUINT32_FROM_LE (strh->samplesize);
if (!target->strh.scale)
target->strh.scale = 1; /* avoid division by zero */
if (!target->strh.rate)
target->strh.rate = 1; /* avoid division by zero */
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)",
target->strh.type, gst_riff_id_to_fourcc (strh->type));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: fcc_handler 0x%08x (%s)",
target->strh.fcc_handler, gst_riff_id_to_fourcc (strh->fcc_handler));
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: flags 0x%08x", strh->flags);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: priority %d", target->strh.priority);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: init_frames %d", target->strh.init_frames);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: scale %d", target->strh.scale);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: rate %d", target->strh.rate);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: start %d", target->strh.start);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: length %d", target->strh.length);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: bufsize %d", target->strh.bufsize);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: quality %d", target->strh.quality);
GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: samplesize %d", target->strh.samplesize);
target->delay = 0LL;
target->total_bytes = 0LL;
target->total_frames = 0;
target->skip = 0;
avi_demux->avih.bufsize = MAX (avi_demux->avih.bufsize, target->strh.bufsize);
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;
GstCaps *newcaps = NULL, *capslist = NULL;
avi_stream_context *stream;
guint32 got_bytes;
got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&strf, 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_PAD_TEMPLATE_GET (src_video_templ), g_strdup_printf ("video_%02d",
avi_demux->num_v_streams));
capslist = gst_caps_append(NULL, GST_CAPS_NEW (
"avidemux_video_src",
"video/avi",
"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))
));
/* let's try some gstreamer-like mime-type caps */
switch (GUINT32_FROM_LE(strf->compression))
{
case GST_MAKE_FOURCC('I','4','2','0'):
case GST_MAKE_FOURCC('Y','U','Y','2'):
newcaps = GST_CAPS_NEW (
"avidemux_video_src",
"video/raw",
"format", GST_PROPS_FOURCC(GUINT32_FROM_LE(strf->compression)),
"width", GST_PROPS_INT(strf->width),
"height", GST_PROPS_INT(strf->height)
);
break;
case GST_MAKE_FOURCC('M','J','P','G'):
newcaps = GST_CAPS_NEW (
"avidemux_video_src",
"video/jpeg",
"width", GST_PROPS_INT(strf->width),
"height", GST_PROPS_INT(strf->height)
);
break;
case GST_MAKE_FOURCC('d','v','s','d'):
newcaps = GST_CAPS_NEW (
"avidemux_video_src",
"video/dv",
"format", GST_PROPS_STRING("NTSC"), /* FIXME??? */
"width", GST_PROPS_INT(strf->width),
"height", GST_PROPS_INT(strf->height)
);
break;
}
if (newcaps) capslist = gst_caps_append (capslist, newcaps);
gst_pad_try_set_caps (srcpad, capslist);
gst_pad_set_event_function (srcpad, gst_avi_demux_handle_src_event);
gst_pad_set_query_function (srcpad, gst_avi_demux_handle_src_query);
gst_pad_set_convert_function (srcpad, gst_avi_demux_src_convert);
stream = &avi_demux->stream[avi_demux->num_streams];
stream->pad = srcpad;
gst_pad_set_element_private (srcpad, stream);
avi_demux->num_streams++;
avi_demux->num_v_streams++;
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;
GstCaps *newcaps = NULL, *capslist = NULL;
avi_stream_context *stream;
guint32 got_bytes;
got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&strf, 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_PAD_TEMPLATE_GET (src_audio_templ), g_strdup_printf ("audio_%02d",
avi_demux->num_a_streams));
capslist = gst_caps_append(NULL, GST_CAPS_NEW (
"avidemux_audio_src",
"video/avi",
"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))
));
/* let's try some gstreamer-formatted mime types */
switch (GUINT16_FROM_LE(strf->format))
{
case 0x0050:
case 0x0055: /* mp3 */
newcaps = gst_caps_new ("avidemux_audio_src",
"audio/mp3",
NULL);
break;
case 0x0001: /* PCM/wav */
newcaps = gst_caps_new ("avidemux_audio_src",
"audio/raw",
gst_props_new (
"format", GST_PROPS_STRING ("int"),
"law", GST_PROPS_INT (0),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_BOOLEAN ((GUINT16_FROM_LE (strf->size) != 8)),
"width", GST_PROPS_INT ((GUINT16_FROM_LE (strf->blockalign)*8) /
GUINT16_FROM_LE (strf->channels)),
"depth", GST_PROPS_INT (GUINT16_FROM_LE (strf->size)),
"rate", GST_PROPS_INT (GUINT32_FROM_LE (strf->rate)),
"channels", GST_PROPS_INT (GUINT16_FROM_LE (strf->channels)),
NULL
));
break;
}
if (newcaps) capslist = gst_caps_append(capslist, newcaps);
gst_pad_try_set_caps(srcpad, capslist);
gst_pad_set_event_function (srcpad, gst_avi_demux_handle_src_event);
gst_pad_set_query_function (srcpad, gst_avi_demux_handle_src_query);
gst_pad_set_convert_function (srcpad, gst_avi_demux_src_convert);
stream = &avi_demux->stream[avi_demux->num_streams];
stream->pad = srcpad;
gst_pad_set_element_private (srcpad, stream);
avi_demux->num_streams++;
avi_demux->num_a_streams++;
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;
GstCaps *newcaps = NULL, *capslist = NULL;
avi_stream_context *stream;
guint32 got_bytes;
got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&strf, 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_PAD_TEMPLATE_GET (src_video_templ), g_strdup_printf ("video_%02d",
avi_demux->num_v_streams));
capslist = gst_caps_append(NULL, GST_CAPS_NEW (
"avidemux_video_src",
"video/avi",
"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))
));
newcaps = gst_caps_new ("avi_type_dv",
"video/dv",
gst_props_new (
"format", GST_PROPS_STRING ("NTSC"), /* FIXME??? */
NULL));
if (newcaps) capslist = gst_caps_append(capslist, newcaps);
gst_pad_try_set_caps(srcpad, capslist);
gst_pad_set_event_function (srcpad, gst_avi_demux_handle_src_event);
gst_pad_set_query_function (srcpad, gst_avi_demux_handle_src_query);
gst_pad_set_convert_function (srcpad, gst_avi_demux_src_convert);
stream = &avi_demux->stream[avi_demux->num_streams];
stream->pad = srcpad;
gst_pad_set_element_private (srcpad, stream);
avi_demux->num_streams++;
avi_demux->num_v_streams++;
gst_element_add_pad (GST_ELEMENT (avi_demux), srcpad);
}
static void
gst_avi_debug_entry (const gchar *prefix, gst_avi_index_entry *entry)
{
GST_DEBUG (0, "%s: %05d %d %08llx %05d %14lld %08x %08x (%d) %08x", prefix, entry->index_nr, entry->stream_nr,
entry->bytes_before, entry->frames_before, entry->ts, entry->flags, entry->offset,
entry->offset, entry->size);
}
static void
gst_avi_demux_parse_index (GstAviDemux *avi_demux,
gulong filepos, gulong offset)
{
GstBuffer *buf;
gulong index_size;
guint32 got_bytes;
gint i;
gst_riff_index_entry *entry;
if (!gst_bytestream_seek (avi_demux->bs, filepos + offset, GST_SEEK_METHOD_SET)) {
GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: could not seek to index");
return;
}
got_bytes = gst_bytestream_read (avi_demux->bs, &buf, 8);
while (got_bytes < 8) {
guint32 remaining;
GstEvent *event;
gst_bytestream_get_status (avi_demux->bs, &remaining, &event);
got_bytes = gst_bytestream_read (avi_demux->bs, &buf, 8);
}
if (GST_BUFFER_OFFSET (buf) != filepos + offset || GST_BUFFER_SIZE (buf) != 8) {
GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: could not get index");
goto end;
}
if (gst_riff_fourcc_to_id (GST_BUFFER_DATA (buf)) != GST_RIFF_TAG_idx1) {
GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: no index found");
goto end;
}
index_size = GUINT32_FROM_LE(*(guint32 *)(GST_BUFFER_DATA (buf) + 4));
gst_buffer_unref (buf);
gst_bytestream_size_hint (avi_demux->bs, index_size);
got_bytes = gst_bytestream_read (avi_demux->bs, &buf, index_size);
if (got_bytes < index_size) {
GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: error reading index");
goto end;
}
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 (avi_demux->index_size * sizeof (gst_avi_index_entry));
entry = (gst_riff_index_entry *) GST_BUFFER_DATA (buf);
for (i = 0; i < avi_demux->index_size; i++) {
avi_stream_context *stream;
gint stream_nr;
gst_avi_index_entry *target = &avi_demux->index_entries[i];
GstFormat format;
stream_nr = CHUNKID_TO_STREAMNR (entry[i].id);
if (stream_nr > avi_demux->num_streams || stream_nr < 0) {
avi_demux->index_entries[i].stream_nr = -1;
continue;
}
target->stream_nr = stream_nr;
stream = &avi_demux->stream[stream_nr];
target->index_nr = i;
target->flags = entry[i].flags;
target->size = entry[i].size;
target->offset = entry[i].offset;
/* figure out if the index is 0 based or relative to the MOVI start */
if (i == 0) {
if (target->offset < filepos)
avi_demux->index_offset = filepos;
else
avi_demux->index_offset = 0;
}
target->bytes_before = stream->total_bytes;
target->frames_before = stream->total_frames;
format = GST_FORMAT_TIME;
if (stream->strh.type == GST_RIFF_FCC_auds) {
/* all audio frames are keyframes */
target->flags |= GST_RIFF_IF_KEYFRAME;
}
/* constant rate stream */
if (stream->strh.samplesize) {
gst_pad_convert (stream->pad, GST_FORMAT_BYTES, stream->total_bytes,
&format, &target->ts);
}
/* VBR stream */
else {
gst_pad_convert (stream->pad, GST_FORMAT_UNITS, stream->total_frames,
&format, &target->ts);
}
gst_avi_debug_entry ("index", target);
stream->total_bytes += target->size;
stream->total_frames++;
}
for (i = 0; i < avi_demux->num_streams; i++) {
avi_stream_context *stream;
stream = &avi_demux->stream[i];
GST_DEBUG (GST_CAT_PLUGIN_INFO, "stream %i: %d frames, %lld bytes", i, stream->total_frames, stream->total_bytes);
}
gst_buffer_unref (buf);
end:
GST_DEBUG (GST_CAT_PLUGIN_INFO, "index offset at %08lx", filepos);
if (!gst_bytestream_seek (avi_demux->bs, filepos, GST_SEEK_METHOD_SET)) {
GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: could not seek back to movi");
return;
}
}
static gst_avi_index_entry*
gst_avi_demux_index_next (GstAviDemux *avi_demux, gint stream_nr, gint start, guint32 flags)
{
gint i;
gst_avi_index_entry *entry = NULL;
for (i = start; i < avi_demux->index_size; i++) {
entry = &avi_demux->index_entries[i];
if (entry->stream_nr == stream_nr && (entry->flags & flags) == flags) {
break;
}
}
return entry;
}
static gst_avi_index_entry*
gst_avi_demux_index_entry_for_time (GstAviDemux *avi_demux, gint stream_nr, guint64 time, guint32 flags)
{
gst_avi_index_entry *entry = NULL, *last_entry = NULL;
gint i;
i = -1;
do {
entry = gst_avi_demux_index_next (avi_demux, stream_nr, i + 1, flags);
if (!entry)
return NULL;
i = entry->index_nr;
if (entry->ts <= time) {
last_entry = entry;
}
}
while (entry->ts <= time);
return last_entry;
}
static gboolean
gst_avi_demux_src_convert (GstPad *pad, GstFormat src_format, gint64 src_value,
GstFormat *dest_format, gint64 *dest_value)
{
gboolean res = TRUE;
avi_stream_context *stream = gst_pad_get_element_private (pad);
switch (src_format) {
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_BYTES:
if (stream->strh.type == GST_RIFF_FCC_auds)
*dest_value = src_value * stream->strh.rate / (stream->strh.scale * GST_SECOND);
else
res = FALSE;
break;
case GST_FORMAT_DEFAULT:
*dest_format = GST_FORMAT_UNITS;
case GST_FORMAT_UNITS:
*dest_value = src_value * stream->strh.rate / (stream->strh.scale * GST_SECOND);
break;
default:
res = FALSE;
break;
}
break;
case GST_FORMAT_BYTES:
switch (*dest_format) {
case GST_FORMAT_TIME:
if (stream->strh.type == GST_RIFF_FCC_auds)
*dest_value = src_value * GST_SECOND * stream->strh.scale / stream->strh.rate;
else
res = FALSE;
default:
res = FALSE;
break;
}
break;
case GST_FORMAT_UNITS:
switch (*dest_format) {
case GST_FORMAT_TIME:
*dest_value = src_value * GST_SECOND * stream->strh.scale / stream->strh.rate;
break;
default:
res = FALSE;
break;
}
break;
default:
res = FALSE;
}
return res;
}
static gboolean
gst_avi_demux_handle_src_query (GstPad *pad, GstPadQueryType type,
GstFormat *format, gint64 *value)
{
gboolean res = TRUE;
//GstAviDemux *avi_demux = GST_AVI_DEMUX (gst_pad_get_parent (pad));
avi_stream_context *stream = gst_pad_get_element_private (pad);
switch (type) {
case GST_PAD_QUERY_TOTAL:
switch (*format) {
case GST_FORMAT_DEFAULT:
*format = GST_FORMAT_TIME;
/* fall through */
case GST_FORMAT_TIME:
*value = GST_SECOND * stream->strh.scale * stream->strh.length / stream->strh.rate;
break;
case GST_FORMAT_BYTES:
if (stream->strh.type == GST_RIFF_FCC_auds)
*value = stream->strh.length;
else
res = FALSE;
break;
case GST_FORMAT_UNITS:
if (stream->strh.type == GST_RIFF_FCC_auds)
*value = stream->strh.length * stream->strh.samplesize;
else if (stream->strh.type == GST_RIFF_FCC_vids)
*value = stream->strh.length;
else
res = FALSE;
break;
default:
res = FALSE;
break;
}
break;
case GST_PAD_QUERY_POSITION:
switch (*format) {
case GST_FORMAT_DEFAULT:
*format = GST_FORMAT_TIME;
/* fall through */
case GST_FORMAT_TIME:
if (stream->strh.samplesize) {
*value = stream->current_byte * GST_SECOND * stream->strh.scale / stream->strh.rate;
}
else {
*value = stream->current_frame * GST_SECOND * stream->strh.scale / stream->strh.rate;
}
break;
case GST_FORMAT_BYTES:
*value = stream->current_byte;
break;
case GST_FORMAT_UNITS:
if (stream->strh.samplesize)
*value = stream->current_byte * stream->strh.samplesize;
else
*value = stream->current_frame;
break;
default:
res = FALSE;
break;
}
break;
default:
res = FALSE;
break;
}
return res;
}
static gint32
gst_avi_demux_sync_streams (GstAviDemux *avi_demux, guint64 time)
{
gint i;
guint32 min_index = G_MAXUINT;
avi_stream_context *stream;
gst_avi_index_entry *entry;
for (i = 0; i < avi_demux->num_streams; i++) {
stream = &avi_demux->stream[i];
GST_DEBUG (0, "finding %d for time %lld", i, time);
entry = gst_avi_demux_index_entry_for_time (avi_demux, stream->num, time, GST_RIFF_IF_KEYFRAME);
if (entry) {
gst_avi_debug_entry ("sync entry", entry);
min_index = MIN (entry->index_nr, min_index);
}
}
GST_DEBUG (0, "first index at %d", min_index);
/* now we know the entry we need to sync on. calculate number of frames to
* skip fro there on and the stream stats */
for (i = 0; i < avi_demux->num_streams; i++) {
gst_avi_index_entry *next_entry;
stream = &avi_demux->stream[i];
/* next entry */
next_entry = gst_avi_demux_index_next (avi_demux, stream->num, min_index, 0);
/* next entry with keyframe */
entry = gst_avi_demux_index_next (avi_demux, stream->num, min_index, GST_RIFF_IF_KEYFRAME);
gst_avi_debug_entry ("final sync", entry);
stream->current_byte = next_entry->bytes_before;
stream->current_frame = next_entry->frames_before;
stream->skip = entry->frames_before - next_entry->frames_before;
GST_DEBUG (0, "%d skip %d", stream->num, stream->skip);
}
GST_DEBUG (0, "final index at %d", min_index);
return min_index;
}
static gboolean
gst_avi_demux_send_event (GstElement *element, GstEvent *event)
{
GList *pads;
pads = gst_element_get_pad_list (element);
while (pads) {
GstPad *pad = GST_PAD (pads->data);
if (GST_PAD_DIRECTION (pad) == GST_PAD_SRC) {
return gst_avi_demux_handle_src_event (pad, event);
}
pads = g_list_next (pads);
}
return FALSE;
}
static gboolean
gst_avi_demux_handle_src_event (GstPad *pad, GstEvent *event)
{
gboolean res = TRUE;
GstAviDemux *avi_demux = GST_AVI_DEMUX (gst_pad_get_parent (pad));
avi_stream_context *stream;
stream = gst_pad_get_element_private (pad);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
switch (GST_EVENT_SEEK_FORMAT (event)) {
case GST_FORMAT_BYTES:
case GST_FORMAT_UNITS:
break;
case GST_FORMAT_TIME:
{
gst_avi_index_entry *seek_entry, *entry;
gint64 desired_offset = GST_EVENT_SEEK_OFFSET (event);
guint32 flags;
guint64 min_index;
/* no seek on audio yet */
if (stream->strh.type == GST_RIFF_FCC_auds)
return FALSE;
flags = GST_RIFF_IF_KEYFRAME;
entry = gst_avi_demux_index_entry_for_time (avi_demux, stream->num, desired_offset, GST_RIFF_IF_KEYFRAME);
if (entry) {
desired_offset = entry->ts;
min_index = gst_avi_demux_sync_streams (avi_demux, desired_offset);
seek_entry = &avi_demux->index_entries[min_index];
gst_avi_debug_entry ("syncing to entry", seek_entry);
avi_demux->seek_offset = seek_entry->offset + avi_demux->index_offset;
avi_demux->seek_pending = TRUE;
avi_demux->last_seek = seek_entry->ts;
}
else {
res = FALSE;
}
break;
}
default:
res = FALSE;
break;
}
break;
default:
res = FALSE;
break;
}
return res;
}
static gboolean
gst_avi_demux_handle_sink_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_FLUSH:
g_warning ("flush event");
break;
case GST_EVENT_DISCONTINUOUS:
{
gint i;
for (i = 0; i < avi_demux->num_streams; i++) {
avi_stream_context *stream = &avi_demux->stream[i];
GST_DEBUG (GST_CAT_EVENT, "sending discont on %d %lld + %lld = %lld", i,
avi_demux->last_seek, stream->delay, avi_demux->last_seek + stream->delay);
event = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
avi_demux->last_seek + stream->delay , NULL);
gst_pad_push (stream->pad, GST_BUFFER (event));
}
break;
}
default:
g_warning ("unhandled event %d", type);
break;
}
return TRUE;
}
static inline gboolean
gst_avi_demux_read_chunk (GstAviDemux *avi_demux, guint32 *id, guint32 *size)
{
gst_riff_chunk *chunk;
GstByteStream *bs = avi_demux->bs;
guint32 got_bytes;
do {
got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&chunk, sizeof (gst_riff_chunk));
if (got_bytes == sizeof (gst_riff_chunk)) {
*id = GUINT32_FROM_LE (chunk->id);
*size = GUINT32_FROM_LE (chunk->size);
gst_bytestream_flush (bs, sizeof (gst_riff_chunk));
return TRUE;
}
} while (gst_avi_demux_handle_sink_event (avi_demux));
return TRUE;
}
static gboolean
gst_avi_demux_process_movi (GstAviDemux *avi_demux, gint rec_depth, guint64 *filepos)
{
guint32 subchunksize = 0;
while (!avi_demux->restart) { /* while not showed all: */
if (avi_demux->seek_pending) {
GST_DEBUG (0, "avidemux: seek pending to %lld %08llx", avi_demux->seek_offset, avi_demux->seek_offset);
if (!gst_bytestream_seek (avi_demux->bs, avi_demux->seek_offset, GST_SEEK_METHOD_SET)) {
GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: could not seek");
}
else {
*filepos = avi_demux->seek_offset;
}
avi_demux->seek_pending = FALSE;
}
GST_INFO (GST_CAT_PLUGIN_INFO, "process chunk filepos %08llx", *filepos);
/* recurse for subchunks of RIFF and LIST chunks: */
if (!gst_avi_demux_process_chunk (avi_demux, filepos, 0,
rec_depth + 1, &subchunksize)) {
return FALSE;
}
/* 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 gboolean
gst_avi_demux_process_chunk (GstAviDemux *avi_demux, guint64 *filepos,
guint32 desired_tag,
gint rec_depth, guint32 *chunksize)
{
guint32 chunkid;
GstByteStream *bs = avi_demux->bs;
if (!gst_avi_demux_read_chunk (avi_demux, &chunkid, chunksize)) {
g_print (" ***** Error reading chunk at filepos 0x%08llx\n", *filepos);
return FALSE;
}
if (desired_tag) { /* do we have to test identity? */
if (desired_tag != chunkid) {
g_print ("\n\n *** Error: Expected chunk '%s', found '%s'\n",
gst_riff_id_to_fourcc (desired_tag),
gst_riff_id_to_fourcc (chunkid));
return FALSE;
}
}
GST_INFO (GST_CAT_PLUGIN_INFO, "chunkid %s, size %08x, filepos %08llx",
gst_riff_id_to_fourcc (chunkid), *chunksize, *filepos);
*filepos += (sizeof (guint32) + sizeof (guint32));
switch (chunkid) {
case GST_RIFF_TAG_RIFF:
case GST_RIFF_TAG_LIST:
{
guint32 datashowed;
guint32 subchunksize = 0; /* size of a read subchunk */
gchar *formtype;
guint32 got_bytes;
got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&formtype, sizeof (guint32));
if (got_bytes < sizeof(guint32))
return FALSE;
switch (GUINT32_FROM_LE (*((guint32*)formtype))) {
case GST_RIFF_LIST_movi:
gst_avi_demux_parse_index (avi_demux, *filepos, *chunksize);
while (!gst_bytestream_flush (bs, sizeof (guint32))) {
guint32 remaining;
GstEvent *event;
gst_bytestream_get_status (avi_demux->bs, &remaining, &event);
}
if (avi_demux->avih.bufsize)
gst_bytestream_size_hint (avi_demux->bs, avi_demux->avih.bufsize);
gst_avi_demux_process_movi (avi_demux, rec_depth, filepos);
goto done;
default:
/* flush the form type */
gst_bytestream_flush_fast (bs, sizeof (guint32));
break;
}
datashowed = sizeof (guint32); /* we showed the form type */
*filepos += datashowed; /* for the rest of the routine */
while (datashowed < *chunksize) { /* while not showed all: */
GST_INFO (GST_CAT_PLUGIN_INFO, "process chunk filepos %08llx", *filepos);
/* recurse for subchunks of RIFF and LIST chunks: */
if (!gst_avi_demux_process_chunk (avi_demux, filepos, 0,
rec_depth + 1, &subchunksize)) {
g_print (" ***** Error processing chunk at filepos 0x%08llxi
%u %u\n", *filepos, *chunksize, datashowed);
return FALSE;
}
if (avi_demux->restart)
goto done;
subchunksize = ((subchunksize + 1) & ~1);
datashowed += (sizeof (guint32) + sizeof (guint32) + subchunksize);
GST_INFO (GST_CAT_PLUGIN_INFO, "process chunk done filepos %08llx, subchunksize %08x",
*filepos, subchunksize);
}
if (datashowed != *chunksize) {
g_warning ("error parsing AVI %u %u", datashowed, *chunksize);
}
goto done;
}
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__:
case GST_RIFF_01wb:
{
gint stream_id;
avi_stream_context *stream;
gint64 next_ts;
GstFormat format;
stream_id = CHUNKID_TO_STREAMNR (chunkid);
stream = &avi_demux->stream[stream_id];
GST_DEBUG (0,"gst_avi_demux_chain: tag found %08x size %08x",
chunkid, *chunksize);
format = GST_FORMAT_TIME;
gst_pad_query (stream->pad, GST_PAD_QUERY_POSITION, &format, &next_ts);
if (stream->strh.init_frames == stream->current_frame && stream->delay==0)
stream->delay = next_ts;
stream->current_frame++;
stream->current_byte += *chunksize;
if (stream->skip) {
stream->skip--;
}
else {
if (GST_PAD_IS_CONNECTED (stream->pad)) {
GstBuffer *buf;
guint32 got_bytes;
if (*chunksize) {
got_bytes = gst_bytestream_peek (bs, &buf, *chunksize);
GST_BUFFER_TIMESTAMP (buf) = next_ts;
if (stream->need_flush) {
/* FIXME, do some flush event here */
stream->need_flush = FALSE;
}
GST_DEBUG (0, "send stream %d: %lld %d %lld %08x", stream_id, next_ts, stream->current_frame - 1,
stream->delay, *chunksize);
gst_pad_push(stream->pad, buf);
}
}
}
*chunksize = (*chunksize + 1) & ~1;
break;
}
default:
GST_DEBUG (0, " ***** unknown chunkid %08x (%s)", chunkid, gst_riff_id_to_fourcc (chunkid));
*chunksize = (*chunksize + 1) & ~1;
break;
}
GST_INFO (GST_CAT_PLUGIN_INFO, "chunkid %s, flush %08x, filepos %08llx",
gst_riff_id_to_fourcc (chunkid), *chunksize, *filepos);
*filepos += *chunksize;
if (!gst_bytestream_flush (bs, *chunksize)) {
return gst_avi_demux_handle_sink_event (avi_demux);
}
done:
return TRUE;
}
static void
gst_avi_demux_loop (GstElement *element)
{
GstAviDemux *avi_demux;
guint32 chunksize;
guint64 filepos = 0;
g_return_if_fail (element != NULL);
g_return_if_fail (GST_IS_AVI_DEMUX (element));
avi_demux = GST_AVI_DEMUX (element);
avi_demux->restart = FALSE;
/* this is basically an infinite loop */
if (!gst_avi_demux_process_chunk (avi_demux, &filepos, GST_RIFF_TAG_RIFF, 0, &chunksize)) {
gst_element_error (element, "This doesn't appear to be an AVI file");
return;
}
if (!avi_demux->restart)
/* if we exit the loop we are EOS */
gst_pad_event_default (avi_demux->sinkpad, gst_event_new (GST_EVENT_EOS));
}
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);
avi_demux->last_seek = 0;
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);
avi_demux->restart = TRUE;
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;
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_element_factory_new ("avidemux",GST_TYPE_AVI_DEMUX,
&gst_avi_demux_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 (src_audio_templ));
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (src_video_templ));
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (sink_templ));
type = gst_type_factory_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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