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gstreamer/gst/asfdemux/gstasfdemux.c
Johan Dahlin 460a1f29be Spelling fixes 
Original commit message from CVS:
Spelling fixes
2004-02-16 16:54:38 +00:00

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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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/riff/riff-ids.h>
#include "gstasfdemux.h"
#include "gstasfmux.h" /* for the type registering */
#include "asfheaders.h"
/* elementfactory information */
static GstElementDetails gst_asf_demux_details = {
"ASF Demuxer",
"Codec/Demuxer",
"Demultiplexes ASF Streams",
"Owen Fraser-Green <owen@discobabe.net>",
};
static GstStaticPadTemplate gst_asf_demux_sink_template =
GST_STATIC_PAD_TEMPLATE (
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS("video/x-ms-asf")
);
GST_DEBUG_CATEGORY_STATIC (asf_debug);
#define GST_CAT_DEFAULT asf_debug
static void gst_asf_demux_base_init (gpointer g_class);
static void gst_asf_demux_class_init (GstASFDemuxClass *klass);
static void gst_asf_demux_init (GstASFDemux *asf_demux);
static gboolean gst_asf_demux_send_event (GstElement *element,
GstEvent *event);
static void gst_asf_demux_loop (GstElement *element);
static gboolean gst_asf_demux_process_object (GstASFDemux *asf_demux);
static void gst_asf_demux_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static guint32 gst_asf_demux_identify_guid (GstASFDemux *asf_demux,
ASFGuidHash *guids,
ASFGuid *guid_raw);
static gboolean gst_asf_demux_process_chunk (GstASFDemux *asf_demux,
asf_packet_info *packet_info,
asf_segment_info *segment_info);
static const GstEventMask* gst_asf_demux_get_src_event_mask (GstPad *pad);
static gboolean gst_asf_demux_handle_sink_event (GstASFDemux *asf_demux,
GstEvent *event,
guint32 remaining);
static gboolean gst_asf_demux_handle_src_event (GstPad *pad,
GstEvent *event);
static const GstFormat* gst_asf_demux_get_src_formats (GstPad *pad);
static const GstQueryType* gst_asf_demux_get_src_query_types (GstPad *pad);
static gboolean gst_asf_demux_handle_src_query (GstPad *pad,
GstQueryType type,
GstFormat *format, gint64 *value);
static gboolean gst_asf_demux_add_video_stream (GstASFDemux *asf_demux,
asf_stream_video_format *video_format,
guint16 id);
static gboolean gst_asf_demux_add_audio_stream (GstASFDemux *asf_demux,
asf_stream_audio *audio,
guint16 id);
static gboolean gst_asf_demux_setup_pad (GstASFDemux *asf_demux,
GstPad *src_pad,
GstCaps *caps,
guint16 id);
static GstElementStateReturn gst_asf_demux_change_state (GstElement *element);
static GstCaps * gst_asf_demux_video_caps (guint32 codec_fcc,
asf_stream_video_format *video);
static GstCaps * gst_asf_demux_audio_caps (guint16 codec_id,
asf_stream_audio *audio, guint8 *extradata);
static GstPadTemplate *videosrctempl, *audiosrctempl;
static GstElementClass *parent_class = NULL;
GType
asf_demux_get_type (void)
{
static GType asf_demux_type = 0;
if (!asf_demux_type) {
static const GTypeInfo asf_demux_info = {
sizeof(GstASFDemuxClass),
gst_asf_demux_base_init,
NULL,
(GClassInitFunc)gst_asf_demux_class_init,
NULL,
NULL,
sizeof(GstASFDemux),
0,
(GInstanceInitFunc)gst_asf_demux_init,
};
asf_demux_type = g_type_register_static(GST_TYPE_ELEMENT, "GstASFDemux", &asf_demux_info, 0);
}
return asf_demux_type;
}
static void
gst_asf_demux_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
int i;
GstCaps *audcaps, *vidcaps, *temp;
guint32 vid_list[] = {
GST_MAKE_FOURCC('I','4','2','0'),
GST_MAKE_FOURCC('Y','U','Y','2'),
GST_MAKE_FOURCC('M','J','P','G'),
GST_MAKE_FOURCC('D','V','S','D'),
GST_MAKE_FOURCC('W','M','V','1'),
GST_MAKE_FOURCC('W','M','V','2'),
GST_MAKE_FOURCC('M','P','G','4'),
GST_MAKE_FOURCC('M','P','4','2'),
GST_MAKE_FOURCC('M','P','4','3'),
GST_MAKE_FOURCC('D','I','V','3'),
GST_MAKE_FOURCC('D','X','5','0'),
0 /* end */
};
gint aud_list[] = {
GST_RIFF_WAVE_FORMAT_MPEGL3,
GST_RIFF_WAVE_FORMAT_MPEGL12,
GST_RIFF_WAVE_FORMAT_PCM,
GST_RIFF_WAVE_FORMAT_VORBIS1,
GST_RIFF_WAVE_FORMAT_A52,
GST_RIFF_WAVE_FORMAT_DIVX_WMAV1,
GST_RIFF_WAVE_FORMAT_DIVX_WMAV2,
GST_RIFF_WAVE_FORMAT_WMAV9,
-1 /* end */
};
audcaps = gst_caps_new_empty();
for (i = 0; aud_list[i] != -1; i++) {
temp = gst_asf_demux_audio_caps (aud_list[i], NULL, NULL);
gst_caps_append (audcaps, temp);
}
audiosrctempl = gst_pad_template_new ("audio_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
audcaps);
vidcaps = gst_caps_new_empty();
for (i = 0; vid_list[i] != 0; i++) {
temp = gst_asf_demux_video_caps (vid_list[i], NULL);
gst_caps_append (vidcaps, temp);
}
videosrctempl = gst_pad_template_new ("video_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
vidcaps);
gst_element_class_add_pad_template (element_class, audiosrctempl);
gst_element_class_add_pad_template (element_class, videosrctempl);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_asf_demux_sink_template));
gst_element_class_set_details (element_class, &gst_asf_demux_details);
}
static void
gst_asf_demux_class_init (GstASFDemuxClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->get_property = gst_asf_demux_get_property;
gstelement_class->change_state = gst_asf_demux_change_state;
gstelement_class->send_event = gst_asf_demux_send_event;
}
static void
gst_asf_demux_init (GstASFDemux *asf_demux)
{
guint i;
asf_demux->sinkpad = gst_pad_new_from_template(
gst_static_pad_template_get (&gst_asf_demux_sink_template), "sink");
gst_element_add_pad (GST_ELEMENT (asf_demux), asf_demux->sinkpad);
gst_element_set_loop_function (GST_ELEMENT (asf_demux), gst_asf_demux_loop);
/* We should zero everything to be on the safe side */
for (i = 0; i < GST_ASF_DEMUX_NUM_VIDEO_PADS; i++) {
asf_demux->video_pad[i] = NULL;
asf_demux->video_PTS[i] = 0;
}
for (i = 0; i < GST_ASF_DEMUX_NUM_AUDIO_PADS; i++) {
asf_demux->audio_pad[i] = NULL;
asf_demux->audio_PTS[i] = 0;
}
asf_demux->num_audio_streams = 0;
asf_demux->num_video_streams = 0;
asf_demux->num_streams = 0;
GST_FLAG_SET (asf_demux, GST_ELEMENT_EVENT_AWARE);
}
static gboolean
gst_asf_demux_send_event (GstElement *element, GstEvent *event)
{
const 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) {
/* we ref the event here as we might have to try again if the event
* failed on this pad */
gst_event_ref (event);
if (gst_asf_demux_handle_src_event (pad, event)) {
gst_event_unref (event);
return TRUE;
}
}
pads = g_list_next (pads);
}
gst_event_unref (event);
return FALSE;
}
static void
gst_asf_demux_loop (GstElement *element)
{
GstASFDemux *asf_demux;
g_return_if_fail (element != NULL);
g_return_if_fail (GST_IS_ASF_DEMUX (element));
asf_demux = GST_ASF_DEMUX (element);
/* this is basically an infinite loop */
gst_asf_demux_process_object (asf_demux);
}
static guint32 _read_var_length (GstASFDemux *asf_demux, guint8 type, guint32 *rsize)
{
guint32 got_bytes;
guint8 *var;
guint32 ret = 0;
GstByteStream *bs = asf_demux->bs;
if (type == 0) {
return 0;
}
got_bytes = gst_bytestream_peek_bytes (bs, &var, 4);
while (got_bytes < 4) {
guint32 remaining;
GstEvent *event;
gst_bytestream_get_status (bs, &remaining, &event);
gst_event_unref (event);
got_bytes = gst_bytestream_peek_bytes (bs, &var, 4);
}
switch (type) {
case 1:
ret = GUINT32_FROM_LE(*(guint32 *)var) & 0xff;
gst_bytestream_flush (bs, 1);
*rsize += 1;
break;
case 2:
ret = GUINT32_FROM_LE(*(guint32 *)var) & 0xffff;
gst_bytestream_flush (bs, 2);
*rsize += 2;
break;
case 3:
ret = GUINT32_FROM_LE(*(guint32 *)var);
gst_bytestream_flush (bs, 4);
*rsize += 4;
break;
}
return ret;
}
#define READ_UINT_BITS_FUNCTION(bits) \
static gboolean \
_read_uint ## bits (GstASFDemux *asf_demux, guint ## bits *ret) \
{ \
GstEvent *event; \
guint32 remaining; \
guint8* data; \
\
g_return_val_if_fail (ret != NULL, FALSE); \
\
do { \
if (gst_bytestream_peek_bytes (asf_demux->bs, &data, bits / 8) == bits / 8) { \
*ret = GUINT ## bits ## _FROM_LE (*((guint ## bits *) data)); \
gst_bytestream_flush (asf_demux->bs, bits / 8); \
return TRUE; \
} \
gst_bytestream_get_status (asf_demux->bs, &remaining, &event); \
} while (gst_asf_demux_handle_sink_event (asf_demux, event, remaining)); \
\
return FALSE; \
}
#ifndef GUINT8_FROM_LE
# define GUINT8_FROM_LE(x) (x)
#endif
READ_UINT_BITS_FUNCTION (8)
READ_UINT_BITS_FUNCTION (16)
READ_UINT_BITS_FUNCTION (32)
READ_UINT_BITS_FUNCTION (64)
#define GET_UINT(a,b)
static gboolean
_read_guid (GstASFDemux *asf_demux, ASFGuid *guid)
{
return (_read_uint32 (asf_demux, &guid->v1) &&
_read_uint32 (asf_demux, &guid->v2) &&
_read_uint32 (asf_demux, &guid->v3) &&
_read_uint32 (asf_demux, &guid->v4));
}
static gboolean
_read_obj_file (GstASFDemux *asf_demux, asf_obj_file *object)
{
return (_read_guid (asf_demux, &object->file_id) &&
_read_uint64 (asf_demux, &object->file_size) &&
_read_uint64 (asf_demux, &object->creation_time) &&
_read_uint64 (asf_demux, &object->packets_count) &&
_read_uint64 (asf_demux, &object->play_time) &&
_read_uint64 (asf_demux, &object->send_time) &&
_read_uint64 (asf_demux, &object->preroll) &&
_read_uint32 (asf_demux, &object->flags) &&
_read_uint32 (asf_demux, &object->min_pktsize) &&
_read_uint32 (asf_demux, &object->max_pktsize) &&
_read_uint32 (asf_demux, &object->min_bitrate));
}
static gboolean
_read_bitrate_record (GstASFDemux *asf_demux, asf_bitrate_record *record)
{
return (_read_uint16 (asf_demux, &record->stream_id) &&
_read_uint32 (asf_demux, &record->bitrate));
}
static gboolean
_read_obj_comment (GstASFDemux *asf_demux, asf_obj_comment *comment)
{
return (_read_uint16 (asf_demux, &comment->title_length) &&
_read_uint16 (asf_demux, &comment->author_length) &&
_read_uint16 (asf_demux, &comment->copyright_length) &&
_read_uint16 (asf_demux, &comment->description_length) &&
_read_uint16 (asf_demux, &comment->rating_length));
}
static gboolean
_read_obj_header (GstASFDemux *asf_demux, asf_obj_header *header)
{
return (_read_uint32 (asf_demux, &header->num_objects) &&
_read_uint8 (asf_demux, &header->unknown1) &&
_read_uint8 (asf_demux, &header->unknown2));
}
static gboolean
_read_obj_stream (GstASFDemux *asf_demux, asf_obj_stream *stream)
{
return (_read_guid (asf_demux, &stream->type) &&
_read_guid (asf_demux, &stream->correction) &&
_read_uint64 (asf_demux, &stream->unknown1) &&
_read_uint32 (asf_demux, &stream->type_specific_size) &&
_read_uint32 (asf_demux, &stream->stream_specific_size) &&
_read_uint16 (asf_demux, &stream->id) &&
_read_uint32 (asf_demux, &stream->unknown2));
}
static gboolean
_read_replicated_data (GstASFDemux *asf_demux, asf_replicated_data *rep)
{
return (_read_uint32 (asf_demux, &rep->object_size) &&
_read_uint32 (asf_demux, &rep->frag_timestamp));
}
static gboolean
_read_obj_data (GstASFDemux *asf_demux, asf_obj_data *object)
{
return (_read_guid (asf_demux, &object->file_id) &&
_read_uint64 (asf_demux, &object->packets) &&
_read_uint8 (asf_demux, &object->unknown1) &&
/*_read_uint8 (asf_demux, &object->unknown2) && */
_read_uint8 (asf_demux, &object->correction));
}
static gboolean
_read_obj_data_correction (GstASFDemux *asf_demux, asf_obj_data_correction *object)
{
return (_read_uint8 (asf_demux, &object->type) &&
_read_uint8 (asf_demux, &object->cycle));
}
static gboolean
_read_obj_data_packet (GstASFDemux *asf_demux, asf_obj_data_packet *object)
{
return (_read_uint8 (asf_demux, &object->flags) &&
_read_uint8 (asf_demux, &object->property));
}
static gboolean
_read_stream_audio (GstASFDemux *asf_demux, asf_stream_audio *audio)
{
return (_read_uint16 (asf_demux, &audio->codec_tag) &&
_read_uint16 (asf_demux, &audio->channels) &&
_read_uint32 (asf_demux, &audio->sample_rate) &&
_read_uint32 (asf_demux, &audio->byte_rate) &&
_read_uint16 (asf_demux, &audio->block_align) &&
_read_uint16 (asf_demux, &audio->word_size) &&
_read_uint16 (asf_demux, &audio->size));
}
static gboolean
_read_stream_correction (GstASFDemux *asf_demux, asf_stream_correction *object)
{
return (_read_uint8 (asf_demux, &object->span) &&
_read_uint16 (asf_demux, &object->packet_size) &&
_read_uint16 (asf_demux, &object->chunk_size) &&
_read_uint16 (asf_demux, &object->data_size) &&
_read_uint8 (asf_demux, &object->silence_data));
}
static gboolean
_read_stream_video (GstASFDemux *asf_demux, asf_stream_video *video)
{
return (_read_uint32 (asf_demux, &video->width) &&
_read_uint32 (asf_demux, &video->height) &&
_read_uint8 (asf_demux, &video->unknown) &&
_read_uint16 (asf_demux, &video->size));
}
static gboolean
_read_stream_video_format (GstASFDemux *asf_demux, asf_stream_video_format *fmt)
{
return (_read_uint32 (asf_demux, &fmt->size) &&
_read_uint32 (asf_demux, &fmt->width) &&
_read_uint32 (asf_demux, &fmt->height) &&
_read_uint16 (asf_demux, &fmt->planes) &&
_read_uint16 (asf_demux, &fmt->depth) &&
_read_uint32 (asf_demux, &fmt->tag) &&
_read_uint32 (asf_demux, &fmt->image_size) &&
_read_uint32 (asf_demux, &fmt->xpels_meter) &&
_read_uint32 (asf_demux, &fmt->ypels_meter) &&
_read_uint32 (asf_demux, &fmt->num_colors) &&
_read_uint32 (asf_demux, &fmt->imp_colors));
}
static gboolean
gst_asf_demux_process_file (GstASFDemux *asf_demux, guint64 *obj_size)
{
asf_obj_file object;
/* Get the rest of the header's header */
_read_obj_file (asf_demux, &object);
asf_demux->packet_size = object.max_pktsize;
asf_demux->play_time = (guint32) object.play_time / 10;
asf_demux->preroll = object.preroll;
GST_INFO ( "Object is a file with %" G_GUINT64_FORMAT " data packets", object.packets_count);
return TRUE;
}
static gboolean
gst_asf_demux_process_bitrate_props_object (GstASFDemux *asf_demux, guint64 *obj_size)
{
guint16 num_streams;
guint8 stream_id;
guint16 i;
asf_bitrate_record bitrate_record;
if (!_read_uint16 (asf_demux, &num_streams))
return FALSE;
GST_INFO ( "Object is a bitrate properties object with %u streams.", num_streams);
for (i = 0; i < num_streams; i++) {
_read_bitrate_record (asf_demux, &bitrate_record);
stream_id = bitrate_record.stream_id & 0x7f;
asf_demux->bitrate[stream_id] = bitrate_record.bitrate;
}
return TRUE;
}
static gboolean
gst_asf_demux_process_comment (GstASFDemux *asf_demux, guint64 *obj_size)
{
asf_obj_comment object;
GstByteStream *bs = asf_demux->bs;
GST_INFO ( "Object is a comment.");
/* Get the rest of the comment's header */
_read_obj_comment (asf_demux, &object);
GST_DEBUG ("Comment lengths: title=%d author=%d copyright=%d description=%d rating=%d",
object.title_length, object.author_length, object.copyright_length, object.description_length, object.rating_length);
/* We don't do anything with them at the moment so just skip them */
gst_bytestream_flush (bs, object.title_length);
gst_bytestream_flush (bs, object.author_length);
gst_bytestream_flush (bs, object.copyright_length);
gst_bytestream_flush (bs, object.description_length);
gst_bytestream_flush (bs, object.rating_length);
return TRUE;
}
static gboolean
gst_asf_demux_process_header (GstASFDemux *asf_demux, guint64 *obj_size)
{
asf_obj_header object;
guint32 i;
/* Get the rest of the header's header */
_read_obj_header (asf_demux, &object);
GST_INFO ( "Object is a header with %u parts", object.num_objects);
/* Loop through the header's objects, processing those */
for (i = 0; i < object.num_objects; i++) {
if (!gst_asf_demux_process_object (asf_demux)) {
return FALSE;
}
}
return TRUE;
}
static gboolean
gst_asf_demux_process_segment (GstASFDemux *asf_demux,
asf_packet_info *packet_info)
{
guint8 byte;
gboolean key_frame;
guint32 replic_size;
guint8 time_delta;
guint32 time_start;
guint32 frag_size;
guint32 rsize;
asf_segment_info segment_info;
_read_uint8 (asf_demux, &byte); rsize = 1;
segment_info.stream_number = byte & 0x7f;
key_frame = (byte & 0x80) >> 7;
GST_INFO ( "Processing segment for stream %u", segment_info.stream_number);
segment_info.sequence = _read_var_length (asf_demux, packet_info->seqtype, &rsize);
segment_info.frag_offset = _read_var_length (asf_demux, packet_info->fragoffsettype, &rsize);
replic_size = _read_var_length (asf_demux, packet_info->replicsizetype, &rsize);
GST_DEBUG ("sequence = %x, frag_offset = %x, replic_size = %x", segment_info.sequence, segment_info.frag_offset, replic_size);
if (replic_size > 1) {
asf_replicated_data replicated_data_header;
segment_info.compressed = FALSE;
/* It's uncompressed with replic data*/
if (replic_size < 8) {
GST_ELEMENT_ERROR (asf_demux, STREAM, DEMUX, (NULL), ("The payload has replicated data but the size is less than 8"));
return FALSE;
}
_read_replicated_data (asf_demux, &replicated_data_header);
segment_info.frag_timestamp = replicated_data_header.frag_timestamp;
segment_info.segment_size = replicated_data_header.object_size;
if (replic_size > 8) {
gst_bytestream_flush (asf_demux->bs, replic_size - 8);
}
rsize += replic_size;
} else {
if (replic_size == 1) {
/* It's compressed */
segment_info.compressed = TRUE;
_read_uint8 (asf_demux, &time_delta); rsize++;
GST_DEBUG ("time_delta %u", time_delta);
} else {
segment_info.compressed = FALSE;
}
time_start = segment_info.frag_offset;
segment_info.frag_offset = 0;
segment_info.frag_timestamp = asf_demux->timestamp;
}
GST_DEBUG ("multiple = %u compressed = %u", packet_info->multiple, segment_info.compressed);
if (packet_info->multiple) {
frag_size = _read_var_length (asf_demux, packet_info->segsizetype, &rsize);
} else {
frag_size = packet_info->size_left - rsize;
}
packet_info->size_left -= rsize;
GST_DEBUG ("size left = %u frag size = %u rsize = %u", packet_info->size_left, frag_size, rsize);
if (segment_info.compressed) {
while (frag_size > 0) {
_read_uint8 (asf_demux, &byte);
packet_info->size_left--;
segment_info.chunk_size = byte;
segment_info.segment_size = segment_info.chunk_size;
if (segment_info.chunk_size > packet_info->size_left) {
GST_ELEMENT_ERROR (asf_demux, STREAM, DEMUX, (NULL), ("Payload chunk overruns packet size."));
return FALSE;
}
gst_asf_demux_process_chunk (asf_demux, packet_info, &segment_info);
frag_size -= segment_info.chunk_size + 1;
}
} else {
segment_info.chunk_size = frag_size;
gst_asf_demux_process_chunk (asf_demux, packet_info, &segment_info);
}
return TRUE;
}
static gboolean
gst_asf_demux_process_data (GstASFDemux *asf_demux, guint64 *obj_size)
{
asf_obj_data object;
asf_obj_data_packet packet_properties_object;
gboolean correction;
guint64 packets;
guint64 packet;
guint8 buf;
guint32 sequence;
guint32 packet_length;
guint16 duration;
guint8 segment;
guint8 segments;
guint8 flags;
guint8 property;
asf_packet_info packet_info;
guint32 rsize;
/* Get the rest of the header */
_read_obj_data (asf_demux, &object);
packets = object.packets;
GST_INFO ( "Object is data with %" G_GUINT64_FORMAT " packets", packets);
for (packet = 0; packet < packets; packet++) {
GST_INFO ( "\n\nProcess packet %" G_GUINT64_FORMAT, packet);
_read_uint8 (asf_demux, &buf); rsize=1;
if (buf & 0x80) {
asf_obj_data_correction correction_object;
/* Uses error correction */
correction = TRUE;
GST_DEBUG ("Data has error correction (%x)", buf);
_read_obj_data_correction (asf_demux, &correction_object); rsize += 2;
}
/* Read the packet flags */
_read_obj_data_packet (asf_demux, &packet_properties_object); rsize += 2;
flags = packet_properties_object.flags;
property = packet_properties_object.property;
packet_info.multiple = flags & 0x01;
sequence = _read_var_length (asf_demux, (flags >> 1) & 0x03, &rsize);
packet_info.padsize =
_read_var_length (asf_demux, (flags >> 3) & 0x03, &rsize);
packet_length =
_read_var_length (asf_demux, (flags >> 5) & 0x03, &rsize);
if (packet_length == 0)
packet_length = asf_demux->packet_size;
GST_DEBUG ("Multiple = %u, Sequence = %u, Padsize = %u, Packet length = %u", packet_info.multiple, sequence, packet_info.padsize, packet_length);
/* Read the property flags */
packet_info.replicsizetype = property & 0x03;
packet_info.fragoffsettype = (property >> 2) & 0x03;
packet_info.seqtype = (property >> 4) & 0x03;
_read_uint32 (asf_demux, &asf_demux->timestamp);
_read_uint16 (asf_demux, &duration);
rsize += 6;
GST_DEBUG ("Timestamp = %x, Duration = %x", asf_demux->timestamp, duration);
if (packet_info.multiple) {
/* There are multiple payloads */
_read_uint8 (asf_demux, &buf);
rsize++;
packet_info.segsizetype = (buf >> 6) & 0x03;
segments = buf & 0x3f;
} else {
packet_info.segsizetype = 2;
segments = 1;
}
packet_info.size_left = packet_length - packet_info.padsize - rsize;
GST_DEBUG ("rsize: %u size left: %u", rsize, packet_info.size_left);
for (segment = 0; segment < segments; segment++) {
if (!gst_asf_demux_process_segment (asf_demux, &packet_info))
return FALSE;
}
/* Skip the padding */
if (packet_info.padsize > 0)
gst_bytestream_flush (asf_demux->bs, packet_info.padsize);
GST_DEBUG ("Remaining size left: %u", packet_info.size_left);
if (packet_info.size_left > 0)
gst_bytestream_flush (asf_demux->bs, packet_info.size_left);
}
return TRUE;
}
static gboolean
gst_asf_demux_process_stream (GstASFDemux *asf_demux, guint64 *obj_size)
{
asf_obj_stream object;
guint32 stream_id;
guint32 correction;
asf_stream_audio audio_object;
asf_stream_correction correction_object;
asf_stream_video video_object;
asf_stream_video_format video_format_object;
guint16 size;
GstBuffer *buf;
guint32 got_bytes;
guint16 id;
/* Get the rest of the header's header */
_read_obj_stream (asf_demux, &object);
/* Identify the stream type */
stream_id = gst_asf_demux_identify_guid (asf_demux, asf_stream_guids, &(object.type));
correction = gst_asf_demux_identify_guid (asf_demux, asf_correction_guids, &(object.correction));
id = object.id;
switch (stream_id) {
case ASF_STREAM_AUDIO:
_read_stream_audio (asf_demux, &audio_object);
size = audio_object.size;
GST_INFO ("Object is an audio stream with %u bytes of additional data.", size);
if (!gst_asf_demux_add_audio_stream (asf_demux, &audio_object, id))
return FALSE;
switch (correction) {
case ASF_CORRECTION_ON:
GST_INFO ( "Using error correction");
_read_stream_correction (asf_demux, &correction_object);
asf_demux->span = correction_object.span;
GST_DEBUG ("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d", correction_object.packet_size, correction_object.chunk_size,
correction_object.data_size, (guint) correction_object.span, (guint) correction_object.silence_data);
if (asf_demux->span > 1) {
if (!correction_object.chunk_size || ((correction_object.packet_size / correction_object.chunk_size) <= 1))
/* Disable descrambling */
asf_demux->span = 0;
} else {
/* Descambling is enabled */
asf_demux->ds_packet_size = correction_object.packet_size;
asf_demux->ds_chunk_size = correction_object.chunk_size;
}
/* Now skip the rest of the silence data */
if (correction_object.data_size > 1)
gst_bytestream_flush (asf_demux->bs, correction_object.data_size - 1);
break;
case ASF_CORRECTION_OFF:
GST_INFO ( "Error correction off");
gst_bytestream_flush (asf_demux->bs, object.stream_specific_size);
break;
default:
GST_ELEMENT_ERROR (asf_demux, STREAM, DEMUX, (NULL), ("Audio stream using unknown error correction"));
return FALSE;
}
break;
case ASF_STREAM_VIDEO:
_read_stream_video (asf_demux, &video_object);
size = video_object.size - 40; /* Byte order gets offset by single byte */
GST_INFO ( "Object is a video stream with %u bytes of additional data.", size);
_read_stream_video_format (asf_demux, &video_format_object);
if (!gst_asf_demux_add_video_stream (asf_demux, &video_format_object, id))
return FALSE;
/* Read any additional information */
if (size) {
got_bytes = gst_bytestream_read (asf_demux->bs, &buf, size);
/* There is additional data */
while (got_bytes < size) {
guint32 remaining;
GstEvent *event;
gst_bytestream_get_status (asf_demux->bs, &remaining, &event);
gst_event_unref (event);
got_bytes = gst_bytestream_read (asf_demux->bs, &buf, size);
}
}
break;
default:
GST_ELEMENT_ERROR (asf_demux, STREAM, WRONG_TYPE, (NULL), (NULL));
return FALSE;
}
return TRUE;
}
static gboolean
gst_asf_demux_skip_object (GstASFDemux *asf_demux, guint64 *obj_size)
{
GstByteStream *bs = asf_demux->bs;
GST_INFO ( "Skipping object...");
gst_bytestream_flush (bs, *obj_size - 24);
return TRUE;
}
static inline gboolean
_read_object_header (GstASFDemux *asf_demux, guint32 *obj_id, guint64 *obj_size)
{
ASFGuid guid;
/* First get the GUID */
if (!_read_guid (asf_demux, &guid))
return FALSE;
*obj_id = gst_asf_demux_identify_guid (asf_demux, asf_object_guids, &guid);
if (!_read_uint64 (asf_demux, obj_size))
return FALSE;
if (*obj_id == ASF_OBJ_UNDEFINED) {
GST_WARNING_OBJECT (asf_demux, "Could not identify object (0x%08x/0x%08x/0x%08x/0x%08x) with size=%llu",
guid.v1, guid.v2, guid.v3, guid.v4, *obj_size);
return TRUE;
}
return TRUE;
}
static gboolean
gst_asf_demux_process_object (GstASFDemux *asf_demux) {
guint32 obj_id;
guint64 obj_size;
if (!_read_object_header (asf_demux, &obj_id, &obj_size)) {
GST_DEBUG (" ***** Error reading object at filepos %" G_GUINT64_FORMAT " (EOS?)\n", /**filepos*/ gst_bytestream_tell (asf_demux->bs));
gst_asf_demux_handle_sink_event (asf_demux, gst_event_new (GST_EVENT_EOS), 0);
return FALSE;
}
GST_INFO ( "Found object %u with size %" G_GUINT64_FORMAT, obj_id, obj_size);
switch (obj_id) {
case ASF_OBJ_STREAM:
return gst_asf_demux_process_stream (asf_demux, &obj_size);
case ASF_OBJ_DATA:
gst_asf_demux_process_data (asf_demux, &obj_size);
/* This is the last object */
return FALSE;
case ASF_OBJ_FILE:
return gst_asf_demux_process_file (asf_demux, &obj_size);
case ASF_OBJ_HEADER:
return gst_asf_demux_process_header (asf_demux, &obj_size);
case ASF_OBJ_CONCEAL_NONE:
break;
case ASF_OBJ_COMMENT:
return gst_asf_demux_process_comment (asf_demux, &obj_size);
case ASF_OBJ_CODEC_COMMENT:
return gst_asf_demux_skip_object (asf_demux, &obj_size);
case ASF_OBJ_INDEX:
return gst_asf_demux_skip_object (asf_demux, &obj_size);
case ASF_OBJ_HEAD1:
return gst_asf_demux_skip_object (asf_demux, &obj_size);
case ASF_OBJ_HEAD2:
break;
case ASF_OBJ_PADDING:
return gst_asf_demux_skip_object (asf_demux, &obj_size);
case ASF_OBJ_EXT_CONTENT_DESC:
return gst_asf_demux_skip_object (asf_demux, &obj_size);
case ASF_OBJ_BITRATE_PROPS:
return gst_asf_demux_process_bitrate_props_object (asf_demux, &obj_size);
case ASF_OBJ_BITRATE_MUTEX:
return gst_asf_demux_skip_object (asf_demux, &obj_size);
case ASF_OBJ_UNDEFINED:
default:
/* unknown object read, just ignore it, we hate fatal errors */
return gst_asf_demux_skip_object (asf_demux, &obj_size);
}
return TRUE;
}
static asf_stream_context *
gst_asf_demux_get_stream (GstASFDemux *asf_demux,
guint16 id)
{
guint8 i;
asf_stream_context *stream;
for (i = 0; i < asf_demux->num_streams; i++) {
stream = &asf_demux->stream[i];
if (stream->id == id) {
/* We've found the one with the matching id */
return &asf_demux->stream[i];
}
}
/* Base case if we haven't found one at all */
GST_ELEMENT_ERROR (asf_demux, STREAM, DEMUX, (NULL), ("Segment found for undefined stream: (%d)", id));
return NULL;
}
static inline void
gst_asf_demux_descramble_segment (GstASFDemux *asf_demux,
asf_segment_info *segment_info,
asf_stream_context *stream) {
GstBuffer *scrambled_buffer;
GstBuffer *descrambled_buffer;
GstBuffer *sub_buffer;
guint offset;
guint off;
guint row;
guint col;
guint idx;
/* descrambled_buffer is initialised in the first iteration */
descrambled_buffer = NULL;
scrambled_buffer = stream->payload;
offset = 0;
for (offset = 0; offset < segment_info->segment_size; offset += asf_demux->ds_chunk_size) {
off = offset / asf_demux->ds_chunk_size;
row = off / asf_demux->span;
col = off % asf_demux->span;
idx = row + col * asf_demux->ds_packet_size / asf_demux->ds_chunk_size;
sub_buffer = gst_buffer_create_sub (scrambled_buffer, idx * asf_demux->ds_chunk_size, asf_demux->ds_chunk_size);
if (!offset) {
descrambled_buffer = sub_buffer;
} else {
gst_buffer_merge (descrambled_buffer, sub_buffer);
gst_buffer_unref (sub_buffer);
}
}
stream->payload = descrambled_buffer;
gst_buffer_unref (scrambled_buffer);
}
static gboolean
gst_asf_demux_process_chunk (GstASFDemux *asf_demux,
asf_packet_info *packet_info,
asf_segment_info *segment_info)
{
asf_stream_context *stream;
guint32 got_bytes;
GstByteStream *bs = asf_demux->bs;
GstBuffer *buffer;
if (!(stream = gst_asf_demux_get_stream (asf_demux, segment_info->stream_number)))
return FALSE;
GST_DEBUG ("Processing chunk of size %u (fo = %d)", segment_info->chunk_size, stream->frag_offset);
if (stream->frag_offset == 0) {
/* new packet */
stream->sequence = segment_info->sequence;
asf_demux->pts = segment_info->frag_timestamp - asf_demux->preroll;
got_bytes = gst_bytestream_peek (bs, &buffer, segment_info->chunk_size);
GST_DEBUG ("BUFFER: Copied stream to buffer (%p - %d)", buffer, GST_BUFFER_REFCOUNT_VALUE(buffer));
stream->payload = buffer;
} else {
GST_DEBUG ("segment_info->sequence = %d, stream->sequence = %d, segment_info->frag_offset = %d, stream->frag_offset = %d", segment_info->sequence, stream->sequence, segment_info->frag_offset, stream->frag_offset);
if (segment_info->sequence == stream->sequence &&
segment_info->frag_offset == stream->frag_offset) {
GstBuffer *new_buffer;
/* continuing packet */
GST_INFO ( "A continuation packet");
got_bytes = gst_bytestream_peek (bs, &buffer, segment_info->chunk_size);
GST_DEBUG ("Copied stream to buffer (%p - %d)", buffer, GST_BUFFER_REFCOUNT_VALUE(buffer));
new_buffer = gst_buffer_merge (stream->payload, buffer);
GST_DEBUG ("BUFFER: Merged new_buffer (%p - %d) from stream->payload(%p - %d) and buffer (%p - %d)", new_buffer, GST_BUFFER_REFCOUNT_VALUE(new_buffer), stream->payload, GST_BUFFER_REFCOUNT_VALUE(stream->payload), buffer, GST_BUFFER_REFCOUNT_VALUE(buffer));
gst_buffer_unref (stream->payload);
gst_buffer_unref (buffer);
stream->payload = new_buffer;
} else {
/* cannot continue current packet: free it */
stream->frag_offset = 0;
if (segment_info->frag_offset != 0) {
/* cannot create new packet */
GST_DEBUG ("BUFFER: Freeing stream->payload (%p)", stream->payload);
gst_buffer_free(stream->payload);
gst_bytestream_flush (bs, segment_info->chunk_size);
packet_info->size_left -= segment_info->chunk_size;
return TRUE;
} else {
/* create new packet */
stream->sequence = segment_info->sequence;
}
}
}
stream->frag_offset +=segment_info->chunk_size;
GST_DEBUG ("frag_offset = %d segment_size = %d ", stream->frag_offset, segment_info->segment_size);
if (stream->frag_offset < segment_info->segment_size) {
/* We don't have the whole packet yet */
} else {
/* We have the whole packet now so we should push the packet to
the src pad now. First though we should check if we need to do
descrambling */
if (asf_demux->span > 1) {
gst_asf_demux_descramble_segment (asf_demux, segment_info, stream);
}
if (GST_PAD_IS_USABLE (stream->pad)) {
GST_DEBUG ("New buffer is at: %p size: %u", GST_BUFFER_DATA(stream->payload), GST_BUFFER_SIZE(stream->payload));
GST_BUFFER_TIMESTAMP (stream->payload) = (GST_SECOND / 1000) * asf_demux->pts;
/*!!! Should handle flush events here? */
GST_DEBUG ("Sending strem %d of size %d", stream->id , segment_info->chunk_size);
GST_INFO ( "Pushing pad");
gst_pad_push (stream->pad, GST_DATA (stream->payload));
}
stream->frag_offset = 0;
}
gst_bytestream_flush (bs, segment_info->chunk_size);
packet_info->size_left -= segment_info->chunk_size;
GST_DEBUG (" ");
return TRUE;
}
/*
* Event stuff
*/
static gboolean
gst_asf_demux_handle_sink_event (GstASFDemux *asf_demux,
GstEvent *event,
guint32 remaining)
{
GstEventType type;
gboolean ret = TRUE;
type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
switch (type) {
case GST_EVENT_EOS: {
asf_stream_context *stream;
GstEvent *event = gst_event_new (GST_EVENT_EOS);
gint n;
for (n = 0; n < asf_demux->num_streams; n++) {
stream = &asf_demux->stream[n];
gst_pad_push (stream->pad, GST_DATA (gst_event_ref (event)));
}
gst_event_unref (event);
gst_bytestream_flush (asf_demux->bs, remaining);
gst_element_set_eos (GST_ELEMENT (asf_demux));
ret = FALSE;
break;
}
case GST_EVENT_DISCONTINUOUS:
{
gint i;
GstEvent *discont;
for (i = 0; i < asf_demux->num_streams; i++) {
asf_stream_context *stream = &asf_demux->stream[i];
if (GST_PAD_IS_USABLE (stream->pad)) {
GST_DEBUG ("sending discont on %d %" G_GINT64_FORMAT " + %" G_GINT64_FORMAT " = %" G_GINT64_FORMAT, i,
asf_demux->last_seek, stream->delay, asf_demux->last_seek + stream->delay);
discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
asf_demux->last_seek + stream->delay , NULL);
gst_pad_push (stream->pad, GST_DATA (discont));
}
}
break;
}
case GST_EVENT_FLUSH:
GST_WARNING_OBJECT (asf_demux, "flush event");
break;
default:
GST_WARNING_OBJECT (asf_demux, "unhandled event %d", type);
break;
}
gst_event_unref (event);
return ret;
}
static gboolean
gst_asf_demux_handle_src_event (GstPad *pad, GstEvent *event)
{
GST_DEBUG ("asfdemux: handle_src_event");
return FALSE;
}
static const GstEventMask*
gst_asf_demux_get_src_event_mask (GstPad *pad) {
static const GstEventMask masks[] = {
{ GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT },
{ 0, }
};
return masks;
}
static const GstFormat*
gst_asf_demux_get_src_formats (GstPad *pad) {
static const GstFormat formats[] = {
GST_FORMAT_TIME,
0
};
return formats;
}
static const GstQueryType*
gst_asf_demux_get_src_query_types (GstPad *pad) {
static const GstQueryType types[] = {
GST_QUERY_TOTAL,
GST_QUERY_POSITION,
0
};
return types;
}
static gboolean
gst_asf_demux_handle_src_query (GstPad *pad,
GstQueryType type,
GstFormat *format, gint64 *value)
{
GstASFDemux *asf_demux;
gboolean res = TRUE;
asf_demux = GST_ASF_DEMUX (gst_pad_get_parent (pad));
switch (type) {
case GST_QUERY_TOTAL:
switch (*format) {
case GST_FORMAT_DEFAULT:
*format = GST_FORMAT_TIME;
/* fall through */
case GST_FORMAT_TIME:
*value = (GST_SECOND / 1000) * asf_demux->pts;
break;
default:
res = FALSE;
}
break;
case GST_QUERY_POSITION:
switch (*format) {
case GST_FORMAT_DEFAULT:
*format = GST_FORMAT_TIME;
/* fall through */
case GST_FORMAT_TIME:
*value = (GST_SECOND / 1000) * asf_demux->timestamp;
break;
default:
res = FALSE;
}
default:
res = FALSE;
break;
}
return res;
}
static void
gst_asf_demux_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GstASFDemux *src;
g_return_if_fail (GST_IS_ASF_DEMUX (object));
src = GST_ASF_DEMUX (object);
switch (prop_id) {
default:
break;
}
}
static GstElementStateReturn
gst_asf_demux_change_state (GstElement *element)
{
GstASFDemux *asf_demux = GST_ASF_DEMUX (element);
gint i;
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_READY_TO_PAUSED:
asf_demux->bs = gst_bytestream_new (asf_demux->sinkpad);
asf_demux->last_seek = 0;
break;
case GST_STATE_PAUSED_TO_READY:
gst_bytestream_destroy (asf_demux->bs);
for (i = 0 ; i < GST_ASF_DEMUX_NUM_VIDEO_PADS; i++) {
asf_demux->video_PTS[i] = 0;
}
for (i = 0 ; i < GST_ASF_DEMUX_NUM_AUDIO_PADS;i++) {
asf_demux->audio_PTS[i] = 0;
}
break;
case GST_STATE_READY_TO_NULL:
break;
default:
break;
}
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
}
static guint32
gst_asf_demux_identify_guid (GstASFDemux *asf_demux,
ASFGuidHash *guids,
ASFGuid *guid)
{
guint32 i;
i = 0;
while (guids[i].obj_id != ASF_OBJ_UNDEFINED) {
if (guids[i].guid.v1 == guid->v1 &&
guids[i].guid.v2 == guid->v2 &&
guids[i].guid.v3 == guid->v3 &&
guids[i].guid.v4 == guid->v4) {
return guids[i].obj_id;
}
i++;
}
/* The base case if none is found */
return ASF_OBJ_UNDEFINED;
}
static GstCaps *
gst_asf_demux_audio_caps (guint16 codec_id,
asf_stream_audio *audio, guint8 *extradata)
{
GstCaps *caps;
gint flags1, flags2;
flags1 = 0;
flags2 = 0;
switch (codec_id) {
case GST_RIFF_WAVE_FORMAT_MPEGL3: /* mp3 */
caps = gst_caps_from_string ("audio/mpeg, mpegversion = (int) 1, "
"layer = (int) 3");
break;
case GST_RIFF_WAVE_FORMAT_MPEGL12: /* mp1 or mp2 */
caps = gst_caps_from_string ("audio/mpeg, mpegversion = (int) 1, "
"layer = (int) 2");
break;
case GST_RIFF_WAVE_FORMAT_PCM: /* PCM/wav */ {
caps = gst_caps_from_string ("audio/x-raw-int, "
"endianness = (int) LITTLE_ENDIAN,"
"signed = (boolean) { true, false }, "
"width = (int) { 8, 16 }, "
"depth = (int) { 8, 16 }");
if (audio != NULL) {
gint ba = audio->block_align;
gint ch = audio->channels;
gint ws = audio->word_size;
gst_caps_set_simple (caps,
"width", G_TYPE_INT, (int)(ba * 8 / ch),
"depth", G_TYPE_INT, ws,
"signed", G_TYPE_BOOLEAN, (ws != 8),
NULL);
}
}
break;
case GST_RIFF_WAVE_FORMAT_VORBIS1: /* vorbis mode 1 */
case GST_RIFF_WAVE_FORMAT_VORBIS2: /* vorbis mode 2 */
case GST_RIFF_WAVE_FORMAT_VORBIS3: /* vorbis mode 3 */
case GST_RIFF_WAVE_FORMAT_VORBIS1PLUS: /* vorbis mode 1+ */
case GST_RIFF_WAVE_FORMAT_VORBIS2PLUS: /* vorbis mode 2+ */
case GST_RIFF_WAVE_FORMAT_VORBIS3PLUS: /* vorbis mode 3+ */
caps = gst_caps_from_string("audio/x-vorbis");
break;
case GST_RIFF_WAVE_FORMAT_A52:
caps = gst_caps_from_string("audio/x-ac3");
break;
case GST_RIFF_WAVE_FORMAT_DIVX_WMAV1:
/* get flags1 and flags2 ripped from ffmpeg (wmadec.c) */
if (audio && audio->size >= 4) {
flags1 = extradata[0] | (extradata[1] << 8);
flags2 = extradata[2] | (extradata[3] << 8);
}
caps = gst_caps_from_string("audio/x-wma, "
"wmaversion = (int) 1, "
"flags1 = (int) [ MIN, MAX ], "
"flags2 = (int) [ MIN, MAX ], "
"block_align = (int) [ 0, MAX ], "
"bitrate = (int) [ 0, MAX ]");
if (audio != NULL) {
gst_caps_set_simple (caps,
"flags1", G_TYPE_INT, flags1,
"flags2", G_TYPE_INT, flags2,
"block_align", G_TYPE_INT, audio->block_align,
"bitrate", G_TYPE_INT, audio->byte_rate * 8,
NULL);
}
break;
case GST_RIFF_WAVE_FORMAT_DIVX_WMAV2:
/* get flags1 and flags2 ripped from ffmpeg (wmadec.c) */
if (audio && audio->size >= 6) {
flags1 = extradata[0] | (extradata[1] << 8) |
(extradata[2] << 16) | (extradata[3] << 24);
flags2 = extradata[4] | (extradata[5] << 8);
}
caps = gst_caps_from_string("audio/x-wma, "
"wmaversion = (int) 2, "
"flags1 = (int) [ MIN, MAX ], "
"flags2 = (int) [ MIN, MAX ], "
"block_align = (int) [ 0, MAX ], "
"bitrate = (int) [ 0, MAX ]");
if (audio != NULL) {
gst_caps_set_simple (caps,
"flags1", G_TYPE_INT, flags1,
"flags2", G_TYPE_INT, flags2,
"block_align", G_TYPE_INT, audio->block_align,
"bitrate", G_TYPE_INT, audio->byte_rate * 8,
NULL);
}
break;
case GST_RIFF_WAVE_FORMAT_WMAV9:
caps = gst_caps_from_string("audio/x-wma, "
"wmaversion = (int) 9");
break;
default:
GST_WARNING ("asfdemux: unknown audio format 0x%04x",
codec_id);
return GST_CAPS_ANY;
break;
}
if (audio != NULL) {
gst_caps_set_simple (caps,
"rate", G_TYPE_INT, audio->sample_rate,
"channels", G_TYPE_INT, audio->channels,
NULL);
}else{
gst_caps_set_simple (caps,
"rate", GST_TYPE_INT_RANGE, 8000, 96000,
"channels", GST_TYPE_INT_RANGE, 1, 2,
NULL);
}
return caps;
}
static gboolean
gst_asf_demux_add_audio_stream (GstASFDemux *asf_demux,
asf_stream_audio *audio,
guint16 id)
{
GstPad *src_pad;
GstCaps *caps;
gchar *name = NULL;
guint16 size_left = 0;
size_left = audio->size;
/* Create the audio pad */
name = g_strdup_printf ("audio_%02d", asf_demux->num_audio_streams);
src_pad = gst_pad_new_from_template (audiosrctempl, name);
g_free (name);
gst_pad_use_explicit_caps (src_pad);
/* Swallow up any left over data and set up the standard propertis from the header info */
if (size_left) {
guint8 *extradata;
GST_WARNING_OBJECT (asf_demux, "asfdemux: Audio header contains %d bytes of surplus data", size_left);
gst_bytestream_peek_bytes (asf_demux->bs, &extradata, size_left);
caps = gst_asf_demux_audio_caps (audio->codec_tag, audio, extradata);
gst_bytestream_flush (asf_demux->bs, size_left);
} else {
caps = gst_asf_demux_audio_caps (audio->codec_tag, audio, NULL);
}
GST_INFO ("Adding audio stream %u codec %u (0x%x)",
asf_demux->num_video_streams,
audio->codec_tag,
audio->codec_tag);
asf_demux->num_audio_streams++;
return gst_asf_demux_setup_pad (asf_demux, src_pad, caps, id);
}
static GstCaps *
gst_asf_demux_video_caps (guint32 codec_fcc,
asf_stream_video_format *video)
{
GstCaps *caps = NULL;
gint width = 0, height = 0;
if (video != NULL) {
width = video->width;
height = video->height;
}
switch (codec_fcc) {
case GST_MAKE_FOURCC('I','4','2','0'):
case GST_MAKE_FOURCC('Y','U','Y','2'):
caps = gst_caps_new_simple ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, codec_fcc, NULL);
break;
case GST_MAKE_FOURCC('M','J','P','G'):
case GST_MAKE_FOURCC('J','P','E','G'):
case GST_MAKE_FOURCC('P','I','X','L'):
case GST_MAKE_FOURCC('V','I','X','L'):
caps = gst_caps_new_simple ("video/x-jpeg", NULL);
break;
case GST_MAKE_FOURCC('D','V','S','D'):
case GST_MAKE_FOURCC('d','v','s','d'):
caps = gst_caps_new_simple ("video/x-dv",
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
break;
case GST_MAKE_FOURCC('W','M','V','1'):
caps = gst_caps_new_simple ("video/x-wmv",
"wmvversion", G_TYPE_INT, 1, NULL);
break;
case GST_MAKE_FOURCC('W','M','V','2'):
caps = gst_caps_new_simple ("video/x-wmv",
"wmvversion", G_TYPE_INT, 2, NULL);
break;
case GST_MAKE_FOURCC('M','P','G','4'):
caps = gst_caps_new_simple ("video/x-msmpeg",
"msmpegversion", G_TYPE_INT, 41, NULL);
break;
case GST_MAKE_FOURCC('M','P','4','2'):
caps = gst_caps_new_simple ("video/x-msmpeg",
"msmpegversion", G_TYPE_INT, 42, NULL);
break;
case GST_MAKE_FOURCC('M','P','4','3'):
caps = gst_caps_new_simple ("video/x-msmpeg",
"msmpegversion", G_TYPE_INT, 43, NULL);
break;
case GST_MAKE_FOURCC('D','I','V','3'):
case GST_MAKE_FOURCC('D','I','V','4'):
case GST_MAKE_FOURCC('D','I','V','5'):
caps = gst_caps_new_simple ("video/x-divx",
"divxversion", G_TYPE_INT, 3, NULL);
break;
case GST_MAKE_FOURCC('D','I','V','X'):
case GST_MAKE_FOURCC('d','i','v','x'):
case GST_MAKE_FOURCC('D','X','5','0'):
caps = gst_caps_new_simple ("video/x-divx",
"divxversion", G_TYPE_INT, 5, NULL);
break;
default:
GST_WARNING ("asfdemux: unknown video format " GST_FOURCC_FORMAT "(0x%08x)",
GST_FOURCC_ARGS(codec_fcc), codec_fcc);
return NULL;
break;
}
if (video != NULL) {
gst_caps_set_simple (caps,
"width", G_TYPE_INT, video->width,
"height", G_TYPE_INT, video->height,
"framerate", G_TYPE_DOUBLE, (double) 0, NULL);
} else {
gst_caps_set_simple (caps,
"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"framerate", GST_TYPE_DOUBLE_RANGE, 0.0, G_MAXDOUBLE,
NULL);
}
return caps;
}
static gboolean
gst_asf_demux_add_video_stream (GstASFDemux *asf_demux,
asf_stream_video_format *video,
guint16 id) {
GstPad *src_pad;
GstCaps *caps;
gchar *name = NULL;
/* Create the audio pad */
name = g_strdup_printf ("video_%02d", asf_demux->num_video_streams);
src_pad = gst_pad_new_from_template (videosrctempl, name);
g_free (name);
/* Now try some gstreamer formatted MIME types (from gst_avi_demux_strf_vids) */
caps = gst_asf_demux_video_caps (video->tag, video);
GST_INFO ("Adding video stream %u codec " GST_FOURCC_FORMAT " (0x%08x)",
asf_demux->num_video_streams,
GST_FOURCC_ARGS(video->tag),
video->tag);
asf_demux->num_video_streams++;
return gst_asf_demux_setup_pad (asf_demux, src_pad, caps, id);
}
static gboolean
gst_asf_demux_setup_pad (GstASFDemux *asf_demux,
GstPad *src_pad,
GstCaps *caps,
guint16 id)
{
asf_stream_context *stream;
gst_pad_set_explicit_caps (src_pad, caps);
gst_pad_set_formats_function (src_pad, gst_asf_demux_get_src_formats);
gst_pad_set_event_mask_function (src_pad, gst_asf_demux_get_src_event_mask);
gst_pad_set_event_function (src_pad, gst_asf_demux_handle_src_event);
gst_pad_set_query_type_function (src_pad, gst_asf_demux_get_src_query_types);
gst_pad_set_query_function (src_pad, gst_asf_demux_handle_src_query);
stream = &asf_demux->stream[asf_demux->num_streams];
stream->pad = src_pad;
stream->id = id;
stream->frag_offset = 0;
stream->sequence = 0;
stream->delay = 0LL;
gst_pad_set_element_private (src_pad, stream);
GST_INFO ("Adding pad for stream %u",
asf_demux->num_streams);
asf_demux->num_streams++;
gst_element_add_pad (GST_ELEMENT (asf_demux), src_pad);
return TRUE;
}
static gboolean
plugin_init (GstPlugin *plugin)
{
if (!gst_library_load ("gstbytestream"))
return FALSE;
/* create an elementfactory for the asf_demux element */
if (!gst_element_register (plugin, "asfdemux", GST_RANK_PRIMARY, GST_TYPE_ASF_DEMUX) ||
!gst_element_register (plugin, "asfmux", GST_RANK_NONE, GST_TYPE_ASFMUX))
return FALSE;
GST_DEBUG_CATEGORY_INIT (asf_debug, "asfdemux", 0, "asf demuxer element");
return TRUE;
}
GST_PLUGIN_DEFINE (
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"asf",
"Demuxes and muxes audio and video in Microsofts ASF format",
plugin_init,
VERSION,
"LGPL",
GST_PACKAGE,
GST_ORIGIN
)
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