yading@10: /*
yading@10:  * MPEG-4 Part 2 / H.263 decode acceleration through VDPAU
yading@10:  *
yading@10:  * Copyright (c) 2008 NVIDIA
yading@10:  * Copyright (c) 2013 Rémi Denis-Courmont
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software Foundation,
yading@10:  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #include <vdpau/vdpau.h>
yading@10: 
yading@10: #include "avcodec.h"
yading@10: #include "vdpau.h"
yading@10: #include "vdpau_internal.h"
yading@10: 
yading@10: static int vdpau_mpeg4_start_frame(AVCodecContext *avctx,
yading@10:                                    const uint8_t *buffer, uint32_t size)
yading@10: {
yading@10:     MpegEncContext * const s = avctx->priv_data;
yading@10:     AVVDPAUContext *hwctx    = avctx->hwaccel_context;
yading@10:     VdpPictureInfoMPEG4Part2 *info = &hwctx->info.mpeg4;
yading@10:     VdpVideoSurface ref;
yading@10:     int i;
yading@10: 
yading@10:     /* fill VdpPictureInfoMPEG4Part2 struct */
yading@10:     info->forward_reference  = VDP_INVALID_HANDLE;
yading@10:     info->backward_reference = VDP_INVALID_HANDLE;
yading@10:     info->vop_coding_type    = 0;
yading@10: 
yading@10:     switch (s->pict_type) {
yading@10:     case AV_PICTURE_TYPE_B:
yading@10:         ref = ff_vdpau_get_surface_id(&s->next_picture);
yading@10:         assert(ref != VDP_INVALID_HANDLE);
yading@10:         info->backward_reference = ref;
yading@10:         info->vop_coding_type    = 2;
yading@10:         /* fall-through */
yading@10:     case AV_PICTURE_TYPE_P:
yading@10:         ref = ff_vdpau_get_surface_id(&s->last_picture);
yading@10:         assert(ref != VDP_INVALID_HANDLE);
yading@10:         info->forward_reference  = ref;
yading@10:     }
yading@10: 
yading@10:     info->trd[0]                            = s->pp_time;
yading@10:     info->trb[0]                            = s->pb_time;
yading@10:     info->trd[1]                            = s->pp_field_time >> 1;
yading@10:     info->trb[1]                            = s->pb_field_time >> 1;
yading@10:     info->vop_time_increment_resolution     = s->avctx->time_base.den;
yading@10:     info->vop_fcode_forward                 = s->f_code;
yading@10:     info->vop_fcode_backward                = s->b_code;
yading@10:     info->resync_marker_disable             = !s->resync_marker;
yading@10:     info->interlaced                        = !s->progressive_sequence;
yading@10:     info->quant_type                        = s->mpeg_quant;
yading@10:     info->quarter_sample                    = s->quarter_sample;
yading@10:     info->short_video_header                = avctx->codec->id == AV_CODEC_ID_H263;
yading@10:     info->rounding_control                  = s->no_rounding;
yading@10:     info->alternate_vertical_scan_flag      = s->alternate_scan;
yading@10:     info->top_field_first                   = s->top_field_first;
yading@10:     for (i = 0; i < 64; ++i) {
yading@10:         info->intra_quantizer_matrix[i]     = s->intra_matrix[i];
yading@10:         info->non_intra_quantizer_matrix[i] = s->inter_matrix[i];
yading@10:     }
yading@10: 
yading@10:     ff_vdpau_common_start_frame(avctx, buffer, size);
yading@10:     return ff_vdpau_add_buffer(avctx, buffer, size);
yading@10: }
yading@10: 
yading@10: static int vdpau_mpeg4_decode_slice(av_unused AVCodecContext *avctx,
yading@10:                                     av_unused const uint8_t *buffer,
yading@10:                                     av_unused uint32_t size)
yading@10: {
yading@10:      return 0;
yading@10: }
yading@10: 
yading@10: #if CONFIG_H263_VDPAU_HWACCEL
yading@10: AVHWAccel ff_h263_vdpau_hwaccel = {
yading@10:     .name           = "h263_vdpau",
yading@10:     .type           = AVMEDIA_TYPE_VIDEO,
yading@10:     .id             = AV_CODEC_ID_H263,
yading@10:     .pix_fmt        = AV_PIX_FMT_VDPAU,
yading@10:     .start_frame    = vdpau_mpeg4_start_frame,
yading@10:     .end_frame      = ff_vdpau_mpeg_end_frame,
yading@10:     .decode_slice   = vdpau_mpeg4_decode_slice,
yading@10: };
yading@10: #endif
yading@10: 
yading@10: #if CONFIG_MPEG4_VDPAU_HWACCEL
yading@10: AVHWAccel ff_mpeg4_vdpau_hwaccel = {
yading@10:     .name           = "mpeg4_vdpau",
yading@10:     .type           = AVMEDIA_TYPE_VIDEO,
yading@10:     .id             = AV_CODEC_ID_MPEG4,
yading@10:     .pix_fmt        = AV_PIX_FMT_VDPAU,
yading@10:     .start_frame    = vdpau_mpeg4_start_frame,
yading@10:     .end_frame      = ff_vdpau_mpeg_end_frame,
yading@10:     .decode_slice   = vdpau_mpeg4_decode_slice,
yading@10: };
yading@10: #endif