FFmpeg/libavcodec/vdpau_mpeg4.c
Anton Khirnov 2c54155407 h264: deMpegEncContextize
Most of the changes are just trivial are just trivial replacements of
fields from MpegEncContext with equivalent fields in H264Context.
Everything in h264* other than h264.c are those trivial changes.

The nontrivial parts are:
1) extracting a simplified version of the frame management code from
   mpegvideo.c. We don't need last/next_picture anymore, since h264 uses
   its own more complex system already and those were set only to appease
   the mpegvideo parts.
2) some tables that need to be allocated/freed in appropriate places.
3) hwaccels -- mostly trivial replacements.
   for dxva, the draw_horiz_band() call is moved from
   ff_dxva2_common_end_frame() to per-codec end_frame() callbacks,
   because it's now different for h264 and MpegEncContext-based
   decoders.
4) svq3 -- it does not use h264 complex reference system, so I just
   added some very simplistic frame management instead and dropped the
   use of ff_h264_frame_start(). Because of this I also had to move some
   initialization code to svq3.

Additional fixes for chroma format and bit depth changes by
Janne Grunau <janne-libav@jannau.net>

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2013-02-15 16:35:16 +01:00

111 lines
4.1 KiB
C

/*
* MPEG-4 Part 2 / H.263 decode acceleration through VDPAU
*
* Copyright (c) 2008 NVIDIA
* Copyright (c) 2013 Rémi Denis-Courmont
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <vdpau/vdpau.h>
#include "avcodec.h"
#include "vdpau.h"
#include "vdpau_internal.h"
static int vdpau_mpeg4_start_frame(AVCodecContext *avctx,
const uint8_t *buffer, uint32_t size)
{
MpegEncContext * const s = avctx->priv_data;
AVVDPAUContext *hwctx = avctx->hwaccel_context;
VdpPictureInfoMPEG4Part2 *info = &hwctx->info.mpeg4;
VdpVideoSurface ref;
int i;
/* fill VdpPictureInfoMPEG4Part2 struct */
info->forward_reference = VDP_INVALID_HANDLE;
info->backward_reference = VDP_INVALID_HANDLE;
info->vop_coding_type = 0;
switch (s->pict_type) {
case AV_PICTURE_TYPE_B:
ref = ff_vdpau_get_surface_id(&s->next_picture);
assert(ref != VDP_INVALID_HANDLE);
info->backward_reference = ref;
info->vop_coding_type = 2;
/* fall-through */
case AV_PICTURE_TYPE_P:
ref = ff_vdpau_get_surface_id(&s->last_picture);
assert(ref != VDP_INVALID_HANDLE);
info->forward_reference = ref;
}
info->trd[0] = s->pp_time;
info->trb[0] = s->pb_time;
info->trd[1] = s->pp_field_time >> 1;
info->trb[1] = s->pb_field_time >> 1;
info->vop_time_increment_resolution = s->avctx->time_base.den;
info->vop_fcode_forward = s->f_code;
info->vop_fcode_backward = s->b_code;
info->resync_marker_disable = !s->resync_marker;
info->interlaced = !s->progressive_sequence;
info->quant_type = s->mpeg_quant;
info->quarter_sample = s->quarter_sample;
info->short_video_header = avctx->codec->id == AV_CODEC_ID_H263;
info->rounding_control = s->no_rounding;
info->alternate_vertical_scan_flag = s->alternate_scan;
info->top_field_first = s->top_field_first;
for (i = 0; i < 64; ++i) {
info->intra_quantizer_matrix[i] = s->intra_matrix[i];
info->non_intra_quantizer_matrix[i] = s->inter_matrix[i];
}
ff_vdpau_common_start_frame(avctx, buffer, size);
return ff_vdpau_add_buffer(avctx, buffer, size);
}
static int vdpau_mpeg4_decode_slice(av_unused AVCodecContext *avctx,
av_unused const uint8_t *buffer,
av_unused uint32_t size)
{
return 0;
}
#if CONFIG_H263_VDPAU_HWACCEL
AVHWAccel ff_h263_vdpau_hwaccel = {
.name = "h263_vdpau",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_H263,
.pix_fmt = AV_PIX_FMT_VDPAU,
.start_frame = vdpau_mpeg4_start_frame,
.end_frame = ff_vdpau_mpeg_end_frame,
.decode_slice = vdpau_mpeg4_decode_slice,
};
#endif
#if CONFIG_MPEG4_VDPAU_HWACCEL
AVHWAccel ff_mpeg4_vdpau_hwaccel = {
.name = "mpeg4_vdpau",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_MPEG4,
.pix_fmt = AV_PIX_FMT_VDPAU,
.start_frame = vdpau_mpeg4_start_frame,
.end_frame = ff_vdpau_mpeg_end_frame,
.decode_slice = vdpau_mpeg4_decode_slice,
};
#endif