mirror of https://git.ffmpeg.org/ffmpeg.git
129 lines
4.8 KiB
C
129 lines
4.8 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 FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; 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 "hwaccel_internal.h"
|
|
#include "mpeg4videodec.h"
|
|
#include "vdpau.h"
|
|
#include "vdpau_internal.h"
|
|
|
|
static int vdpau_mpeg4_start_frame(AVCodecContext *avctx,
|
|
const uint8_t *buffer, uint32_t size)
|
|
{
|
|
Mpeg4DecContext *ctx = avctx->priv_data;
|
|
MpegEncContext * const s = &ctx->m;
|
|
MPVPicture *pic = s->cur_pic.ptr;
|
|
struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
|
|
VdpPictureInfoMPEG4Part2 *info = &pic_ctx->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_pic.ptr->f);
|
|
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_pic.ptr->f);
|
|
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->framerate.num;
|
|
info->vop_fcode_forward = s->f_code;
|
|
info->vop_fcode_backward = s->b_code;
|
|
info->resync_marker_disable = !ctx->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) {
|
|
int n = s->idsp.idct_permutation[i];
|
|
info->intra_quantizer_matrix[i] = s->intra_matrix[n];
|
|
info->non_intra_quantizer_matrix[i] = s->inter_matrix[n];
|
|
}
|
|
|
|
ff_vdpau_common_start_frame(pic_ctx, buffer, size);
|
|
return ff_vdpau_add_buffer(pic_ctx, 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;
|
|
}
|
|
|
|
static int vdpau_mpeg4_init(AVCodecContext *avctx)
|
|
{
|
|
VdpDecoderProfile profile;
|
|
|
|
switch (avctx->profile) {
|
|
case AV_PROFILE_MPEG4_SIMPLE:
|
|
profile = VDP_DECODER_PROFILE_MPEG4_PART2_SP;
|
|
break;
|
|
// As any ASP decoder must be able to decode SP, this
|
|
// should be a safe fallback if profile is unknown/unspecified.
|
|
case AV_PROFILE_UNKNOWN:
|
|
case AV_PROFILE_MPEG4_ADVANCED_SIMPLE:
|
|
profile = VDP_DECODER_PROFILE_MPEG4_PART2_ASP;
|
|
break;
|
|
default:
|
|
return AVERROR(ENOTSUP);
|
|
}
|
|
|
|
return ff_vdpau_common_init(avctx, profile, avctx->level);
|
|
}
|
|
|
|
const FFHWAccel ff_mpeg4_vdpau_hwaccel = {
|
|
.p.name = "mpeg4_vdpau",
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_MPEG4,
|
|
.p.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,
|
|
.frame_priv_data_size = sizeof(struct vdpau_picture_context),
|
|
.init = vdpau_mpeg4_init,
|
|
.uninit = ff_vdpau_common_uninit,
|
|
.frame_params = ff_vdpau_common_frame_params,
|
|
.priv_data_size = sizeof(VDPAUContext),
|
|
.caps_internal = HWACCEL_CAP_ASYNC_SAFE,
|
|
};
|