static gboolean
gst_vdp_h264_dec_set_sink_caps (GstBaseVideoDecoder * base_video_decoder,
GstCaps * caps)
{
GstVdpH264Dec *h264_dec;
GstStructure *structure;
const GValue *value;
h264_dec = GST_VDP_H264_DEC (base_video_decoder);
structure = gst_caps_get_structure (caps, 0);
/* packetized video has a codec_data */
if ((value = gst_structure_get_value (structure, "codec_data"))) {
GstBuffer *buf;
GstBitReader reader;
guint8 version;
guint8 n_sps, n_pps;
gint i;
GST_DEBUG_OBJECT (h264_dec, "have packetized h264");
h264_dec->packetized = TRUE;
buf = gst_value_get_buffer (value);
GST_MEMDUMP ("avcC:", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
/* parse the avcC data */
if (GST_BUFFER_SIZE (buf) < 7) {
GST_ERROR_OBJECT (h264_dec, "avcC size %u < 7", GST_BUFFER_SIZE (buf));
return FALSE;
}
gst_bit_reader_init_from_buffer (&reader, buf);
READ_UINT8 (&reader, version, 8);
if (version != 1)
return FALSE;
SKIP (&reader, 30);
READ_UINT8 (&reader, h264_dec->nal_length_size, 2);
h264_dec->nal_length_size += 1;
GST_DEBUG_OBJECT (h264_dec, "nal length %u", h264_dec->nal_length_size);
SKIP (&reader, 3);
READ_UINT8 (&reader, n_sps, 5);
for (i = 0; i < n_sps; i++) {
guint16 sps_length;
guint8 *data;
READ_UINT16 (&reader, sps_length, 16);
sps_length -= 1;
SKIP (&reader, 8);
data = GST_BUFFER_DATA (buf) + gst_bit_reader_get_pos (&reader) / 8;
if (!gst_h264_parser_parse_sequence (h264_dec->parser, data, sps_length))
return FALSE;
SKIP (&reader, sps_length * 8);
}
READ_UINT8 (&reader, n_pps, 8);
for (i = 0; i < n_pps; i++) {
guint16 pps_length;
guint8 *data;
READ_UINT16 (&reader, pps_length, 16);
pps_length -= 1;
SKIP (&reader, 8);
data = GST_BUFFER_DATA (buf) + gst_bit_reader_get_pos (&reader) / 8;
if (!gst_h264_parser_parse_picture (h264_dec->parser, data, pps_length))
return FALSE;
SKIP (&reader, pps_length * 8);
}
}
return TRUE;
}
static GstFlowReturn
gst_vdp_h264_dec_parse_data (GstBaseVideoDecoder * base_video_decoder,
GstBuffer * buf, gboolean at_eos, GstVideoFrame * frame)
{
GstVdpH264Dec *h264_dec = GST_VDP_H264_DEC (base_video_decoder);
GstBitReader reader;
GstNalUnit nal_unit;
guint8 forbidden_zero_bit;
guint8 *data;
guint size;
gint i;
GstFlowReturn ret = GST_FLOW_OK;
GST_MEMDUMP ("data", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
gst_bit_reader_init_from_buffer (&reader, buf);
if (gst_bit_reader_get_remaining (&reader) <
h264_dec->nal_length_size * 8 + 7)
goto invalid_packet;
/* skip nal_length or sync code */
gst_bit_reader_skip_unchecked (&reader, h264_dec->nal_length_size * 8);
forbidden_zero_bit = gst_bit_reader_get_bits_uint8_unchecked (&reader, 1);
if (forbidden_zero_bit != 0) {
GST_WARNING ("forbidden_zero_bit != 0");
return GST_FLOW_ERROR;
}
nal_unit.ref_idc = gst_bit_reader_get_bits_uint16_unchecked (&reader, 2);
GST_DEBUG ("nal_ref_idc: %u", nal_unit.ref_idc);
/* read nal_unit_type */
nal_unit.type = gst_bit_reader_get_bits_uint16_unchecked (&reader, 5);
GST_DEBUG ("nal_unit_type: %u", nal_unit.type);
if (nal_unit.type == 14 || nal_unit.type == 20) {
if (!gst_bit_reader_skip (&reader, 24))
goto invalid_packet;
}
nal_unit.IdrPicFlag = (nal_unit.type == 5 ? 1 : 0);
data = GST_BUFFER_DATA (buf) + gst_bit_reader_get_pos (&reader) / 8;
size = gst_bit_reader_get_remaining (&reader) / 8;
i = size - 1;
while ((gint) size > 0 && data[i] == 0x00) {
size--;
i--;
}
if (GST_VIDEO_FRAME_FLAG_IS_SET (frame, GST_H264_FRAME_GOT_PRIMARY)) {
if (nal_unit.type == GST_NAL_SPS || nal_unit.type == GST_NAL_PPS ||
nal_unit.type == GST_NAL_SEI || nal_unit.type == GST_NAL_AU_DELIMITER ||
(nal_unit.type >= 14 && nal_unit.type <= 18))
ret =
gst_base_video_decoder_have_frame (base_video_decoder, FALSE, &frame);
}
if (nal_unit.type >= GST_NAL_SLICE && nal_unit.type <= GST_NAL_SLICE_IDR) {
GstH264Slice slice;
if (!gst_h264_parser_parse_slice_header (h264_dec->parser, &slice, data,
size, nal_unit))
goto invalid_packet;
if (slice.redundant_pic_cnt == 0) {
if (GST_VIDEO_FRAME_FLAG_IS_SET (frame, GST_H264_FRAME_GOT_PRIMARY)) {
GstH264Slice *p_slice;
guint8 pic_order_cnt_type, p_pic_order_cnt_type;
gboolean finish_frame = FALSE;
p_slice = &(GST_H264_FRAME_CAST (frame)->slice_hdr);
pic_order_cnt_type = slice.picture->sequence->pic_order_cnt_type;
p_pic_order_cnt_type = p_slice->picture->sequence->pic_order_cnt_type;
if (slice.frame_num != p_slice->frame_num)
finish_frame = TRUE;
else if (slice.picture != p_slice->picture)
finish_frame = TRUE;
else if (slice.bottom_field_flag != p_slice->bottom_field_flag)
finish_frame = TRUE;
else if (nal_unit.ref_idc != p_slice->nal_unit.ref_idc &&
(nal_unit.ref_idc == 0 || p_slice->nal_unit.ref_idc == 0))
finish_frame = TRUE;
else if ((pic_order_cnt_type == 0 && p_pic_order_cnt_type == 0) &&
(slice.pic_order_cnt_lsb != p_slice->pic_order_cnt_lsb ||
slice.delta_pic_order_cnt_bottom !=
p_slice->delta_pic_order_cnt_bottom))
finish_frame = TRUE;
else if ((p_pic_order_cnt_type == 1 && p_pic_order_cnt_type == 1) &&
(slice.delta_pic_order_cnt[0] != p_slice->delta_pic_order_cnt[0] ||
slice.delta_pic_order_cnt[1] !=
p_slice->delta_pic_order_cnt[1]))
finish_frame = TRUE;
if (finish_frame)
ret =
gst_base_video_decoder_have_frame (base_video_decoder, FALSE,
&frame);
}
if (!GST_VIDEO_FRAME_FLAG_IS_SET (frame, GST_H264_FRAME_GOT_PRIMARY)) {
if (GST_H264_IS_I_SLICE (slice.type)
|| GST_H264_IS_SI_SLICE (slice.type))
GST_VIDEO_FRAME_FLAG_SET (frame, GST_VIDEO_FRAME_FLAG_KEYFRAME);
GST_H264_FRAME_CAST (frame)->slice_hdr = slice;
GST_VIDEO_FRAME_FLAG_SET (frame, GST_H264_FRAME_GOT_PRIMARY);
}
}
gst_h264_frame_add_slice ((GstH264Frame *) frame, buf);
}
if (nal_unit.type == GST_NAL_SPS) {
if (!gst_h264_parser_parse_sequence (h264_dec->parser, data, size))
goto invalid_packet;
}
if (nal_unit.type == GST_NAL_PPS) {
if (!gst_h264_parser_parse_picture (h264_dec->parser, data, size))
goto invalid_packet;
}
gst_buffer_unref (buf);
return ret;
invalid_packet:
GST_WARNING ("Invalid packet size!");
gst_buffer_unref (buf);
return GST_FLOW_OK;
}
/**
* gst_mpeg4_parse_video_plane_with_short_header:
* @shorthdr: The #GstMpeg4VideoPlaneShortHdr to parse
* @data: The data to parse
* @size: The size of the @data to parse
*/
GstMpeg4ParseResult
gst_mpeg4_parse_video_plane_short_header (GstMpeg4VideoPlaneShortHdr *
shorthdr, const guint8 * data, gsize size)
{
guint8 zero_bits;
GstBitReader br = GST_BIT_READER_INIT (data, size);
g_return_val_if_fail (shorthdr != NULL, GST_MPEG4_PARSER_ERROR);
if (gst_bit_reader_get_remaining (&br) < 48)
goto failed;
if (gst_bit_reader_get_bits_uint32_unchecked (&br, 22) != 0x20)
goto failed;
shorthdr->temporal_reference =
gst_bit_reader_get_bits_uint8_unchecked (&br, 8);
CHECK_MARKER (&br);
zero_bits = gst_bit_reader_get_bits_uint8_unchecked (&br, 1);
if (zero_bits != 0x00)
goto failed;
shorthdr->split_screen_indicator =
gst_bit_reader_get_bits_uint8_unchecked (&br, 1);
shorthdr->document_camera_indicator =
gst_bit_reader_get_bits_uint8_unchecked (&br, 1);
shorthdr->full_picture_freeze_release =
gst_bit_reader_get_bits_uint8_unchecked (&br, 1);
shorthdr->source_format = gst_bit_reader_get_bits_uint8_unchecked (&br, 3);
/* Set parameters/Table 6-25 */
switch (shorthdr->source_format) {
case 0x01:
shorthdr->vop_width = 128;
shorthdr->vop_height = 96;
shorthdr->num_macroblocks_in_gob = 8;
shorthdr->num_gobs_in_vop = 6;
break;
case 0x02:
shorthdr->vop_width = 176;
shorthdr->vop_height = 144;
shorthdr->num_macroblocks_in_gob = 11;
shorthdr->num_gobs_in_vop = 9;
break;
case 0x03:
shorthdr->vop_width = 352;
shorthdr->vop_height = 288;
shorthdr->num_macroblocks_in_gob = 22;
shorthdr->num_gobs_in_vop = 18;
break;
case 0x04:
shorthdr->vop_width = 704;
shorthdr->vop_height = 576;
shorthdr->num_macroblocks_in_gob = 88;
shorthdr->num_gobs_in_vop = 18;
break;
case 0x05:
shorthdr->vop_width = 1408;
shorthdr->vop_height = 1152;
shorthdr->num_macroblocks_in_gob = 352;
shorthdr->num_gobs_in_vop = 18;
break;
default:
shorthdr->vop_width = 0;
shorthdr->vop_height = 0;
shorthdr->num_macroblocks_in_gob = 0;
shorthdr->num_gobs_in_vop = 0;
}
shorthdr->picture_coding_type =
gst_bit_reader_get_bits_uint8_unchecked (&br, 1);
zero_bits = gst_bit_reader_get_bits_uint8_unchecked (&br, 4);
if (zero_bits != 0x00)
goto failed;
shorthdr->vop_quant = gst_bit_reader_get_bits_uint8_unchecked (&br, 5);
zero_bits = gst_bit_reader_get_bits_uint8_unchecked (&br, 1);
if (zero_bits != 0x00)
goto failed;
do {
READ_UINT8 (&br, shorthdr->pei, 1);
if (shorthdr->pei == 1)
READ_UINT8 (&br, shorthdr->psupp, 8);
} while (shorthdr->pei == 1);
shorthdr->size = gst_bit_reader_get_pos (&br);
return GST_MPEG4_PARSER_OK;
failed:
GST_WARNING ("Could not parse the Plane short header");
return GST_MPEG4_PARSER_ERROR;
}
/**
* gst_mpeg4_parse_video_packet_header:
* @videopackethdr: The #GstMpeg4VideoPacketHdr structure to fill
* @vol: The last parsed #GstMpeg4VideoObjectLayer, will be updated
* with the informations found during the parsing
* @vop: The last parsed #GstMpeg4VideoObjectPlane, will be updated
* with the informations found during the parsing
* @sprite_trajectory: A #GstMpeg4SpriteTrajectory to fill or %NULL
* with the informations found during the parsing
* @data: The data to parse, should be set after the resync marker.
* @size: The size of the data to parse
*
* Parsers @data containing the video packet header
* and fills the @videopackethdr structure
*/
GstMpeg4ParseResult
gst_mpeg4_parse_video_packet_header (GstMpeg4VideoPacketHdr * videopackethdr,
GstMpeg4VideoObjectLayer * vol, GstMpeg4VideoObjectPlane * vop,
GstMpeg4SpriteTrajectory * sprite_trajectory, const guint8 * data,
gsize size)
{
guint8 markersize;
GstBitReader br = GST_BIT_READER_INIT (data, size);
g_return_val_if_fail (videopackethdr != NULL, GST_MPEG4_PARSER_ERROR);
g_return_val_if_fail (vol != NULL, GST_MPEG4_PARSER_ERROR);
markersize = compute_resync_marker_size (vop, NULL, NULL);
CHECK_REMAINING (&br, markersize);
if (gst_bit_reader_get_bits_uint32_unchecked (&br, markersize) != 0x01)
goto failed;
if (vol->shape != GST_MPEG4_RECTANGULAR) {
READ_UINT8 (&br, videopackethdr->header_extension_code, 1);
if (vol->sprite_enable == GST_MPEG4_SPRITE_STATIC &&
vop->coding_type == GST_MPEG4_I_VOP) {
CHECK_REMAINING (&br, 56);
U_READ_UINT16 (&br, vop->width, 13);
CHECK_MARKER (&br);
U_READ_UINT16 (&br, vop->height, 13);
CHECK_MARKER (&br);
U_READ_UINT16 (&br, vop->horizontal_mc_spatial_ref, 13);
CHECK_MARKER (&br);
U_READ_UINT16 (&br, vop->vertical_mc_spatial_ref, 13);
CHECK_MARKER (&br);
/* Update macroblock infirmations */
vop->mb_height = (vop->height + 15) / 16;
vop->mb_width = (vop->width + 15) / 16;
vop->mb_num = vop->mb_height * vop->mb_width;
}
}
READ_UINT16 (&br, videopackethdr->macroblock_number,
g_bit_storage (vop->mb_num - 1));
if (vol->shape != GST_MPEG4_BINARY_ONLY)
READ_UINT16 (&br, videopackethdr->quant_scale, vol->quant_precision);
if (vol->shape == GST_MPEG4_RECTANGULAR)
READ_UINT8 (&br, videopackethdr->header_extension_code, 1);
if (videopackethdr->header_extension_code) {
guint timeincr = 0;
guint8 bit = 0, coding_type;
do {
READ_UINT8 (&br, bit, 1);
timeincr++;
} while (bit);
vol->vop_time_increment_bits = timeincr;
CHECK_MARKER (&br);
READ_UINT16 (&br, vop->time_increment, timeincr);
CHECK_MARKER (&br);
READ_UINT8 (&br, coding_type, 2);
vop->coding_type = coding_type;
if (vol->shape != GST_MPEG4_RECTANGULAR) {
READ_UINT8 (&br, vop->change_conv_ratio_disable, 1);
if (vop->coding_type != GST_MPEG4_I_VOP)
READ_UINT8 (&br, vop->shape_coding_type, 1);
}
if (vol->shape != GST_MPEG4_BINARY_ONLY) {
READ_UINT8 (&br, vop->intra_dc_vlc_thr, 3);
if (sprite_trajectory && vol->sprite_enable == GST_MPEG4_SPRITE_GMG &&
vop->coding_type == GST_MPEG4_S_VOP &&
vol->no_of_sprite_warping_points > 0) {
parse_sprite_trajectory (&br, sprite_trajectory,
vol->no_of_sprite_warping_points);
}
if (vol->reduced_resolution_vop_enable &&
vol->shape == GST_MPEG4_RECTANGULAR &&
(vop->coding_type == GST_MPEG4_P_VOP ||
vop->coding_type == GST_MPEG4_I_VOP))
READ_UINT8 (&br, vop->reduced_resolution, 1);
if (vop->coding_type != GST_MPEG4_I_VOP) {
READ_UINT8 (&br, vop->fcode_forward, 3);
CHECK_ALLOWED (vop->fcode_forward, 1, 7);
}
if (vop->coding_type == GST_MPEG4_B_VOP) {
READ_UINT8 (&br, vop->fcode_backward, 3);
CHECK_ALLOWED (vop->fcode_backward, 1, 7);
}
}
}
if (vol->newpred_enable) {
guint16 nbbits =
vol->vop_time_increment_bits + 3 < 15 ? vop->time_increment + 3 : 15;
READ_UINT16 (&br, vop->id, nbbits);
READ_UINT8 (&br, vop->id_for_prediction_indication, 1);
if (vop->id_for_prediction_indication) {
/* Would be nice if the standard actually told us... */
READ_UINT16 (&br, vop->id, nbbits);
CHECK_MARKER (&br);
}
}
videopackethdr->size = gst_bit_reader_get_pos (&br);
failed:
GST_DEBUG ("Failed to parse video packet header");
return GST_MPEG4_PARSER_NO_PACKET;
}
/**
* gst_mpeg4_parse_video_object_plane:
* @vop: The #GstMpeg4VideoObjectPlane currently being parsed
* @sprite_trajectory: A #GstMpeg4SpriteTrajectory to fill or %NULL
* @vol: The #GstMpeg4VideoObjectLayer structure to fill
* @data: The data to parse
* @size: The size of the @data to parse
*
* Parses @data containing the video object plane packet, and fills the @vol
* structure.
*
* Returns: a #GstMpeg4ParseResult
*/
GstMpeg4ParseResult
gst_mpeg4_parse_video_object_plane (GstMpeg4VideoObjectPlane * vop,
GstMpeg4SpriteTrajectory * sprite_trajectory,
GstMpeg4VideoObjectLayer * vol, const guint8 * data, gsize size)
{
guint8 vop_start_code, coding_type, modulo_time_base;
GstBitReader br = GST_BIT_READER_INIT (data, size);
g_return_val_if_fail (vop != NULL, GST_MPEG4_PARSER_ERROR);
if (vol->shape == GST_MPEG4_BINARY_ONLY) {
/* TODO: implement binary only shapes */
GST_WARNING ("Binary only shapes not supported");
goto failed;
}
READ_UINT8 (&br, vop_start_code, 8);
if (vop_start_code != GST_MPEG4_VIDEO_OBJ_PLANE)
goto wrong_start_code;
/* set default values */
vop->modulo_time_base = 0;
vop->rounding_type = 0;
vop->top_field_first = 1;
vop->alternate_vertical_scan_flag = 0;
vop->fcode_forward = 1;
vop->fcode_backward = 1;
/* Compute macroblock informations */
if (vol->interlaced)
vop->mb_height = (2 * (vol->height + 31) / 32);
else
vop->mb_height = (vol->height + 15) / 16;
vop->mb_width = (vol->width + 15) / 16;
vop->mb_num = vop->mb_height * vop->mb_width;
READ_UINT8 (&br, coding_type, 2);
vop->coding_type = coding_type;
READ_UINT8 (&br, modulo_time_base, 1);
while (modulo_time_base) {
vop->modulo_time_base++;
READ_UINT8 (&br, modulo_time_base, 1);
}
CHECK_REMAINING (&br, vol->vop_time_increment_bits + 3);
MARKER_UNCHECKED (&br);
vop->time_increment =
gst_bit_reader_get_bits_uint16_unchecked (&br,
vol->vop_time_increment_bits);
MARKER_UNCHECKED (&br);
vop->coded = gst_bit_reader_get_bits_uint8_unchecked (&br, 1);
if (!vop->coded)
return GST_MPEG4_PARSER_OK;
if (vol->newpred_enable) {
guint16 nbbits =
vop->time_increment + 3 < 15 ? vop->time_increment + 3 : 15;
READ_UINT16 (&br, vop->id, nbbits);
READ_UINT8 (&br, vop->id_for_prediction_indication, 1);
if (vop->id_for_prediction_indication) {
/* Would be nice if the standard actually told us... */
READ_UINT16 (&br, vop->id, nbbits);
CHECK_MARKER (&br);
}
}
if (vol->shape != GST_MPEG4_BINARY_ONLY &&
(vop->coding_type == GST_MPEG4_P_VOP ||
(vop->coding_type == GST_MPEG4_S_VOP &&
vol->sprite_enable == GST_MPEG4_SPRITE_GMG)))
READ_UINT8 (&br, vop->rounding_type, 1);
if ((vol->reduced_resolution_vop_enable) &&
(vol->shape == GST_MPEG4_RECTANGULAR ||
(vop->coding_type = GST_MPEG4_P_VOP ||
vop->coding_type == GST_MPEG4_I_VOP)))
READ_UINT8 (&br, vop->reduced_resolution, 1);
if (vol->shape != GST_MPEG4_RECTANGULAR) {
if (vol->sprite_enable == GST_MPEG4_SPRITE_STATIC &&
vop->coding_type == GST_MPEG4_I_VOP) {
CHECK_REMAINING (&br, 55);
vop->width = gst_bit_reader_get_bits_uint16_unchecked (&br, 13);
MARKER_UNCHECKED (&br);
vop->height = gst_bit_reader_get_bits_uint16_unchecked (&br, 13);
MARKER_UNCHECKED (&br);
vop->horizontal_mc_spatial_ref =
gst_bit_reader_get_bits_uint16_unchecked (&br, 13);
MARKER_UNCHECKED (&br);
vop->vertical_mc_spatial_ref =
gst_bit_reader_get_bits_uint16_unchecked (&br, 13);
MARKER_UNCHECKED (&br);
/* Recompute the Macroblock informations
* accordingly to the new values */
if (vol->interlaced)
vop->mb_height = (2 * (vol->height + 31) / 32);
else
vop->mb_height = (vol->height + 15) / 16;
vop->mb_width = (vol->width + 15) / 16;
vop->mb_num = vop->mb_height * vop->mb_width;
}
if ((vol->shape != GST_MPEG4_BINARY_ONLY) &&
vol->scalability && vol->enhancement_type)
READ_UINT8 (&br, vop->background_composition, 1);
READ_UINT8 (&br, vop->change_conv_ratio_disable, 1);
READ_UINT8 (&br, vop->constant_alpha, 1);
if (vop->constant_alpha)
READ_UINT8 (&br, vop->constant_alpha_value, 1);
}
if (vol->shape != GST_MPEG4_BINARY_ONLY) {
if (!vol->complexity_estimation_disable) {
GST_WARNING ("Complexity estimation not supported");
goto failed;
}
READ_UINT8 (&br, vop->intra_dc_vlc_thr, 3);
if (vol->interlaced) {
READ_UINT8 (&br, vop->top_field_first, 1);
READ_UINT8 (&br, vop->alternate_vertical_scan_flag, 1);
}
}
if ((vol->sprite_enable == GST_MPEG4_SPRITE_STATIC ||
vol->sprite_enable == GST_MPEG4_SPRITE_GMG) &&
vop->coding_type == GST_MPEG4_S_VOP) {
/* only if @sprite_trajectory is not NULL we parse it */
if (sprite_trajectory && vol->no_of_sprite_warping_points)
parse_sprite_trajectory (&br, sprite_trajectory,
vol->no_of_sprite_warping_points);
if (vol->sprite_brightness_change) {
GST_WARNING ("sprite_brightness_change not supported");
goto failed;
}
if (vol->sprite_enable == GST_MPEG4_SPRITE_STATIC) {
GST_WARNING ("sprite enable static not supported");
goto failed;
}
}
if (vol->shape != GST_MPEG4_BINARY_ONLY) {
READ_UINT16 (&br, vop->quant, vol->quant_precision);
if (vol->shape == GST_MPEG4_GRAYSCALE) {
/* TODO implement grayscale support */
GST_WARNING ("Grayscale shapes no supported");
/* TODO implement me */
goto failed;
}
if (vop->coding_type != GST_MPEG4_I_VOP) {
READ_UINT8 (&br, vop->fcode_forward, 3);
CHECK_ALLOWED (vop->fcode_forward, 1, 7);
}
if (vop->coding_type == GST_MPEG4_B_VOP) {
READ_UINT8 (&br, vop->fcode_backward, 3);
CHECK_ALLOWED (vop->fcode_backward, 1, 7);
}
}
if (!vol->scalability) {
if (vol->shape != GST_MPEG4_RECTANGULAR)
READ_UINT8 (&br, vop->shape_coding_type, 1);
} else {
if (vol->enhancement_type) {
READ_UINT8 (&br, vop->load_backward_shape, 1);
if (vop->load_backward_shape) {
GST_WARNING ("Load backward shape not supported");
goto failed;
}
READ_UINT8 (&br, vop->ref_select_code, 2);
}
}
vop->size = gst_bit_reader_get_pos (&br);
/* More things to possibly parse ... */
return GST_MPEG4_PARSER_OK;
failed:
GST_WARNING ("failed parsing \"Video Object Plane\"");
return GST_MPEG4_PARSER_ERROR;
wrong_start_code:
GST_WARNING ("got buffer with wrong start code");
goto failed;
}
