libavcodec/vdpau_mpeg12.c

   1 /*
   2  * MPEG-1/2 HW decode acceleration through VDPAU
   3  *
   4  * Copyright (c) 2008 NVIDIA
   5  * Copyright (c) 2013 Rémi Denis-Courmont
   6  *
   7  * This file is part of Libav.
   8  *
   9  * Libav is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * Libav is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with Libav; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #include <vdpau/vdpau.h>
  25
  26 #include "avcodec.h"
  27 #include "hwaccel.h"
  28 #include "mpegvideo.h"
  29 #include "vdpau.h"
  30 #include "vdpau_internal.h"
  31
  32 static int vdpau_mpeg_start_frame(AVCodecContext *avctx,
  33                                   const uint8_t *buffer, uint32_t size)
  34 {
  35     MpegEncContext * const s = avctx->priv_data;
  36     Picture *pic             = s->current_picture_ptr;
  37     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
  38     VdpPictureInfoMPEG1Or2 *info = &pic_ctx->info.mpeg;
  39     VdpVideoSurface ref;
  40     int i;
  41
  42     /* fill VdpPictureInfoMPEG1Or2 struct */
  43     info->forward_reference  = VDP_INVALID_HANDLE;
  44     info->backward_reference = VDP_INVALID_HANDLE;
  45
  46     switch (s->pict_type) {
  47     case AV_PICTURE_TYPE_B:
  48         ref = ff_vdpau_get_surface_id(s->next_picture.f);
  49         assert(ref != VDP_INVALID_HANDLE);
  50         info->backward_reference = ref;
  51         /* fall through to forward prediction */
  52     case AV_PICTURE_TYPE_P:
  53         ref = ff_vdpau_get_surface_id(s->last_picture.f);
  54         info->forward_reference  = ref;
  55     }
  56
  57     info->slice_count                = 0;
  58     info->picture_structure          = s->picture_structure;
  59     info->picture_coding_type        = s->pict_type;
  60     info->intra_dc_precision         = s->intra_dc_precision;
  61     info->frame_pred_frame_dct       = s->frame_pred_frame_dct;
  62     info->concealment_motion_vectors = s->concealment_motion_vectors;
  63     info->intra_vlc_format           = s->intra_vlc_format;
  64     info->alternate_scan             = s->alternate_scan;
  65     info->q_scale_type               = s->q_scale_type;
  66     info->top_field_first            = s->top_field_first;
  67     // Both for MPEG-1 only, zero for MPEG-2:
  68     info->full_pel_forward_vector    = s->full_pel[0];
  69     info->full_pel_backward_vector   = s->full_pel[1];
  70     // For MPEG-1 fill both horizontal & vertical:
  71     info->f_code[0][0]               = s->mpeg_f_code[0][0];
  72     info->f_code[0][1]               = s->mpeg_f_code[0][1];
  73     info->f_code[1][0]               = s->mpeg_f_code[1][0];
  74     info->f_code[1][1]               = s->mpeg_f_code[1][1];
  75     for (i = 0; i < 64; ++i) {
  76         info->intra_quantizer_matrix[i]     = s->intra_matrix[i];
  77         info->non_intra_quantizer_matrix[i] = s->inter_matrix[i];
  78     }
  79
  80     return ff_vdpau_common_start_frame(pic_ctx, buffer, size);
  81 }
  82
  83 static int vdpau_mpeg_decode_slice(AVCodecContext *avctx,
  84                                    const uint8_t *buffer, uint32_t size)
  85 {
  86     MpegEncContext * const s = avctx->priv_data;
  87     Picture *pic             = s->current_picture_ptr;
  88     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
  89     int val;
  90
  91     val = ff_vdpau_add_buffer(pic_ctx, buffer, size);
  92     if (val < 0)
  93         return val;
  94
  95     pic_ctx->info.mpeg.slice_count++;
  96     return 0;
  97 }
  98
  99 #if CONFIG_MPEG1_VDPAU_HWACCEL
 100 static int vdpau_mpeg1_init(AVCodecContext *avctx)
 101 {
 102     return ff_vdpau_common_init(avctx, VDP_DECODER_PROFILE_MPEG1,
 103                                 VDP_DECODER_LEVEL_MPEG1_NA);
 104 }
 105
 106 const AVHWAccel ff_mpeg1_vdpau_hwaccel = {
 107     .name           = "mpeg1_vdpau",
 108     .type           = AVMEDIA_TYPE_VIDEO,
 109     .id             = AV_CODEC_ID_MPEG1VIDEO,
 110     .pix_fmt        = AV_PIX_FMT_VDPAU,
 111     .start_frame    = vdpau_mpeg_start_frame,
 112     .end_frame      = ff_vdpau_mpeg_end_frame,
 113     .decode_slice   = vdpau_mpeg_decode_slice,
 114     .frame_priv_data_size = sizeof(struct vdpau_picture_context),
 115     .init           = vdpau_mpeg1_init,
 116     .uninit         = ff_vdpau_common_uninit,
 117     .priv_data_size = sizeof(VDPAUContext),
 118     .caps_internal  = HWACCEL_CAP_ASYNC_SAFE,
 119 };
 120 #endif
 121
 122 #if CONFIG_MPEG2_VDPAU_HWACCEL
 123 static int vdpau_mpeg2_init(AVCodecContext *avctx)
 124 {
 125     VdpDecoderProfile profile;
 126
 127     switch (avctx->profile) {
 128     case FF_PROFILE_MPEG2_MAIN:
 129         profile = VDP_DECODER_PROFILE_MPEG2_MAIN;
 130         break;
 131     case FF_PROFILE_MPEG2_SIMPLE:
 132         profile = VDP_DECODER_PROFILE_MPEG2_SIMPLE;
 133         break;
 134     default:
 135         return AVERROR(EINVAL);
 136     }
 137
 138     return ff_vdpau_common_init(avctx, profile, VDP_DECODER_LEVEL_MPEG2_HL);
 139 }
 140
 141 const AVHWAccel ff_mpeg2_vdpau_hwaccel = {
 142     .name           = "mpeg2_vdpau",
 143     .type           = AVMEDIA_TYPE_VIDEO,
 144     .id             = AV_CODEC_ID_MPEG2VIDEO,
 145     .pix_fmt        = AV_PIX_FMT_VDPAU,
 146     .start_frame    = vdpau_mpeg_start_frame,
 147     .end_frame      = ff_vdpau_mpeg_end_frame,
 148     .decode_slice   = vdpau_mpeg_decode_slice,
 149     .frame_priv_data_size = sizeof(struct vdpau_picture_context),
 150     .init           = vdpau_mpeg2_init,
 151     .uninit         = ff_vdpau_common_uninit,
 152     .frame_params   = ff_vdpau_common_frame_params,
 153     .priv_data_size = sizeof(VDPAUContext),
 154     .caps_internal  = HWACCEL_CAP_ASYNC_SAFE,
 155 };
 156 #endif