static VdpPictureInfoMPEG4Part2
gst_vdp_mpeg4_dec_fill_info (GstVdpMpeg4Dec * mpeg4_dec,
GstMpeg4Frame * mpeg4_frame, Mpeg4VideoObjectPlane * vop)
{
Mpeg4VideoObjectLayer *vol;
VdpPictureInfoMPEG4Part2 info;
vol = &mpeg4_dec->vol;
info.forward_reference = VDP_INVALID_HANDLE;
info.backward_reference = VDP_INVALID_HANDLE;
/* forward reference */
if (vop->coding_type != I_VOP && mpeg4_dec->f_frame) {
info.forward_reference =
GST_VDP_VIDEO_BUFFER (GST_VIDEO_FRAME (mpeg4_dec->
f_frame)->src_buffer)->surface;
}
if (vop->coding_type == B_VOP) {
guint32 trd_time, trb_time;
trd_time = mpeg4_dec->b_frame->vop_time - mpeg4_dec->f_frame->vop_time;
trb_time = mpeg4_frame->vop_time - mpeg4_dec->f_frame->vop_time;
info.trd[0] = trd_time;
info.trb[0] = trb_time;
info.trd[1] = round ((double) trd_time / (double) mpeg4_dec->tframe);
info.trb[1] = round ((double) trb_time / (double) mpeg4_dec->tframe);
/* backward reference */
if (mpeg4_dec->b_frame) {
info.backward_reference =
GST_VDP_VIDEO_BUFFER (GST_VIDEO_FRAME (mpeg4_dec->
b_frame)->src_buffer)->surface;
}
}
memcpy (info.intra_quantizer_matrix, vol->intra_quant_mat, 64);
memcpy (info.non_intra_quantizer_matrix, vol->non_intra_quant_mat, 64);
info.vop_time_increment_resolution = vol->vop_time_increment_resolution;
info.resync_marker_disable = vol->resync_marker_disable;
info.interlaced = vol->interlaced;
info.quant_type = vol->quant_type;
info.quarter_sample = vol->quarter_sample;
/* FIXME: support short video header */
info.short_video_header = FALSE;
info.vop_coding_type = vop->coding_type;
info.vop_fcode_forward = vop->fcode_forward;
info.vop_fcode_backward = vop->fcode_backward;
info.rounding_control = vop->rounding_type;
info.alternate_vertical_scan_flag = vop->alternate_vertical_scan_flag;
info.top_field_first = vop->top_field_first;
return info;
}
static GstVideoFrame *
gst_vdp_mpeg_dec_create_frame (GstBaseVideoDecoder * base_video_decoder)
{
return GST_VIDEO_FRAME (gst_vdp_mpeg_frame_new ());
}
static gboolean
gst_vdp_mpeg4_dec_handle_configuration (GstVdpMpeg4Dec * mpeg4_dec,
GstMpeg4Frame * mpeg4_frame)
{
Mpeg4VisualObjectSequence vos;
Mpeg4VisualObject vo;
Mpeg4VideoObjectLayer vol;
GstVideoState state;
guint8 profile_indication;
VdpDecoderProfile profile;
GstFlowReturn ret;
if (mpeg4_dec->is_configured)
return GST_FLOW_OK;
if (!mpeg4_frame->vos_buf || !mpeg4_frame->vo_buf || !mpeg4_frame->vol_buf)
goto skip_frame;
if (!mpeg4_util_parse_VOS (mpeg4_frame->vos_buf, &vos))
goto skip_frame;
if (!mpeg4_util_parse_VO (mpeg4_frame->vo_buf, &vo))
goto skip_frame;
if (!mpeg4_util_parse_VOL (mpeg4_frame->vol_buf, &vo, &vol))
goto skip_frame;
state = gst_base_video_decoder_get_state (GST_BASE_VIDEO_DECODER (mpeg4_dec));
state.width = vol.width;
state.height = vol.height;
if (vol.fixed_vop_rate) {
state.fps_n = vol.vop_time_increment_resolution;
state.fps_d = vol.fixed_vop_time_increment;
}
state.par_n = vol.par_n;
state.par_d = vol.par_d;
gst_base_video_decoder_set_state (GST_BASE_VIDEO_DECODER (mpeg4_dec), state);
profile_indication = vos.profile_and_level_indication >> 4;
switch (profile_indication) {
case 0x0:
profile = VDP_DECODER_PROFILE_MPEG4_PART2_SP;
break;
case 0xf:
profile = VDP_DECODER_PROFILE_MPEG4_PART2_ASP;
break;
default:
goto unsupported_profile;
}
ret = gst_vdp_decoder_init_decoder (GST_VDP_DECODER (mpeg4_dec), profile, 2);
if (ret != GST_FLOW_OK)
return ret;
mpeg4_dec->vol = vol;
mpeg4_dec->is_configured = TRUE;
return GST_FLOW_OK;
skip_frame:
GST_WARNING ("Skipping frame since we're not configured yet");
gst_base_video_decoder_skip_frame (GST_BASE_VIDEO_DECODER (mpeg4_dec),
GST_VIDEO_FRAME (mpeg4_frame));
return GST_FLOW_CUSTOM_ERROR;
unsupported_profile:
GST_ELEMENT_ERROR (mpeg4_dec, STREAM, WRONG_TYPE,
("vdpaumpeg4dec doesn't support this streams profile"),
("profile_and_level_indication: %d", vos.profile_and_level_indication));
return GST_FLOW_ERROR;
}
