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/*
* MPEG-1/2 HW 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_mpeg_start_frame(AVCodecContext *avctx,
const uint8_t *buffer, uint32_t size)
{
MpegEncContext * const s = avctx->priv_data;
AVVDPAUContext *hwctx = avctx->hwaccel_context;
VdpPictureInfoMPEG1Or2 *info = &hwctx->info.mpeg;
VdpVideoSurface ref;
int i;
/* fill VdpPictureInfoMPEG1Or2 struct */
info->forward_reference = VDP_INVALID_HANDLE;
info->backward_reference = VDP_INVALID_HANDLE;
switch (s->pict_type) {
case AV_PICTURE_TYPE_B:
ref = ff_vdpau_get_surface_id(&s->next_picture);
assert(ref != VDP_INVALID_HANDLE);
hwctx->info.mpeg.backward_reference = ref;
/* fall through to forward prediction */
case AV_PICTURE_TYPE_P:
ref = ff_vdpau_get_surface_id(&s->last_picture);
hwctx->info.mpeg.forward_reference = ref;
}
info->slice_count = 0;
info->picture_structure = s->picture_structure;
info->picture_coding_type = s->pict_type;
info->intra_dc_precision = s->intra_dc_precision;
info->frame_pred_frame_dct = s->frame_pred_frame_dct;
info->concealment_motion_vectors = s->concealment_motion_vectors;
info->intra_vlc_format = s->intra_vlc_format;
info->alternate_scan = s->alternate_scan;
info->q_scale_type = s->q_scale_type;
info->top_field_first = s->top_field_first;
// Both for MPEG-1 only, zero for MPEG-2:
info->full_pel_forward_vector = s->full_pel[0];
info->full_pel_backward_vector = s->full_pel[1];
// For MPEG-1 fill both horizontal & vertical:
info->f_code[0][0] = s->mpeg_f_code[0][0];
info->f_code[0][1] = s->mpeg_f_code[0][1];
info->f_code[1][0] = s->mpeg_f_code[1][0];
info->f_code[1][1] = s->mpeg_f_code[1][1];
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];
}
return ff_vdpau_common_start_frame(avctx, buffer, size);
}
static int vdpau_mpeg_decode_slice(AVCodecContext *avctx,
const uint8_t *buffer, uint32_t size)
{
AVVDPAUContext *hwctx = avctx->hwaccel_context;
int val;
val = ff_vdpau_add_buffer(avctx, buffer, size);
if (val < 0)
return val;
hwctx->info.mpeg.slice_count++;
return 0;
}
#if CONFIG_MPEG1_VDPAU_HWACCEL
AVHWAccel ff_mpeg1_vdpau_hwaccel = {
.name = "mpeg1_vdpau",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_MPEG1VIDEO,
.pix_fmt = AV_PIX_FMT_VDPAU,
.start_frame = vdpau_mpeg_start_frame,
.end_frame = ff_vdpau_mpeg_end_frame,
.decode_slice = vdpau_mpeg_decode_slice,
};
#endif
#if CONFIG_MPEG2_VDPAU_HWACCEL
AVHWAccel ff_mpeg2_vdpau_hwaccel = {
.name = "mpeg2_vdpau",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_MPEG2VIDEO,
.pix_fmt = AV_PIX_FMT_VDPAU,
.start_frame = vdpau_mpeg_start_frame,
.end_frame = ff_vdpau_mpeg_end_frame,
.decode_slice = vdpau_mpeg_decode_slice,
};
#endif
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