/*
  * VC-1 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 "vc1.h"
 #include "vdpau.h"
 #include "vdpau_internal.h"
 
 static int vdpau_vc1_start_frame(AVCodecContext *avctx,
                                  const uint8_t *buffer, uint32_t size)
 {
     VC1Context * const v  = avctx->priv_data;
     AVVDPAUContext *hwctx = avctx->hwaccel_context;
     MpegEncContext * const s = &v->s;
     VdpPictureInfoVC1 *info = &hwctx->info.vc1;
     VdpVideoSurface ref;
 
     /*  fill LvPictureInfoVC1 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);
         info->backward_reference = ref;
         /* 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->slice_count       = 0;
     if (v->bi_type)
         info->picture_type  = 4;
     else
         info->picture_type  = s->pict_type - 1 + s->pict_type / 3;
 
     info->frame_coding_mode = v->fcm;
     info->postprocflag      = v->postprocflag;
     info->pulldown          = v->broadcast;
     info->interlace         = v->interlace;
     info->tfcntrflag        = v->tfcntrflag;
     info->finterpflag       = v->finterpflag;
     info->psf               = v->psf;
     info->dquant            = v->dquant;
     info->panscan_flag      = v->panscanflag;
     info->refdist_flag      = v->refdist_flag;
     info->quantizer         = v->quantizer_mode;
     info->extended_mv       = v->extended_mv;
     info->extended_dmv      = v->extended_dmv;
     info->overlap           = v->overlap;
     info->vstransform       = v->vstransform;
     info->loopfilter        = v->s.loop_filter;
     info->fastuvmc          = v->fastuvmc;
     info->range_mapy_flag   = v->range_mapy_flag;
     info->range_mapy        = v->range_mapy;
     info->range_mapuv_flag  = v->range_mapuv_flag;
     info->range_mapuv       = v->range_mapuv;
     /* Specific to simple/main profile only */
     info->multires          = v->multires;
     info->syncmarker        = v->s.resync_marker;
     info->rangered          = v->rangered | (v->rangeredfrm << 1);
     info->maxbframes        = v->s.max_b_frames;
     info->deblockEnable     = v->postprocflag & 1;
     info->pquant            = v->pq;
 
     return ff_vdpau_common_start_frame(avctx, buffer, size);
 }
 
 static int vdpau_vc1_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.vc1.slice_count++;
     return 0;
 }
 
 #if CONFIG_WMV3_VDPAU_HWACCEL
 AVHWAccel ff_wmv3_vdpau_hwaccel = {
     .name           = "wm3_vdpau",
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_WMV3,
     .pix_fmt        = AV_PIX_FMT_VDPAU,
     .start_frame    = vdpau_vc1_start_frame,

     .end_frame      = ff_vdpau_mpeg_end_frame,

     .decode_slice   = vdpau_vc1_decode_slice,
 };
 #endif
 
 AVHWAccel ff_vc1_vdpau_hwaccel = {
     .name           = "vc1_vdpau",
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_VC1,
     .pix_fmt        = AV_PIX_FMT_VDPAU,
     .start_frame    = vdpau_vc1_start_frame,

     .end_frame      = ff_vdpau_mpeg_end_frame,

     .decode_slice   = vdpau_vc1_decode_slice,
 };