git.sesse.net Git - ffmpeg/blob - 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 FFmpeg.
   8  *
   9  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 "mpegvideo.h"
  28 #include "vdpau.h"
  29 #include "vdpau_internal.h"
  30
  31 static int vdpau_mpeg_start_frame(AVCodecContext *avctx,
  32                                   const uint8_t *buffer, uint32_t size)
  33 {
  34     MpegEncContext * const s = avctx->priv_data;
  35     Picture *pic             = s->current_picture_ptr;
  36     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
  37     VdpPictureInfoMPEG1Or2 *info = &pic_ctx->info.mpeg;
  38     VdpVideoSurface ref;
  39     int i;
  40
  41     /* fill VdpPictureInfoMPEG1Or2 struct */
  42     info->forward_reference  = VDP_INVALID_HANDLE;
  43     info->backward_reference = VDP_INVALID_HANDLE;
  44
  45     switch (s->pict_type) {
  46     case AV_PICTURE_TYPE_B:
  47         ref = ff_vdpau_get_surface_id(s->next_picture.f);
  48         assert(ref != VDP_INVALID_HANDLE);
  49         info->backward_reference = ref;
  50         /* fall through to forward prediction */
  51     case AV_PICTURE_TYPE_P:
  52         ref = ff_vdpau_get_surface_id(s->last_picture.f);
  53         info->forward_reference  = ref;
  54     }
  55
  56     info->slice_count                = 0;
  57     info->picture_structure          = s->picture_structure;
  58     info->picture_coding_type        = s->pict_type;
  59     info->intra_dc_precision         = s->intra_dc_precision;
  60     info->frame_pred_frame_dct       = s->frame_pred_frame_dct;
  61     info->concealment_motion_vectors = s->concealment_motion_vectors;
  62     info->intra_vlc_format           = s->intra_vlc_format;
  63     info->alternate_scan             = s->alternate_scan;
  64     info->q_scale_type               = s->q_scale_type;
  65     info->top_field_first            = s->top_field_first;
  66     // Both for MPEG-1 only, zero for MPEG-2:
  67     info->full_pel_forward_vector    = s->full_pel[0];
  68     info->full_pel_backward_vector   = s->full_pel[1];
  69     // For MPEG-1 fill both horizontal & vertical:
  70     info->f_code[0][0]               = s->mpeg_f_code[0][0];
  71     info->f_code[0][1]               = s->mpeg_f_code[0][1];
  72     info->f_code[1][0]               = s->mpeg_f_code[1][0];
  73     info->f_code[1][1]               = s->mpeg_f_code[1][1];
  74     for (i = 0; i < 64; ++i) {
  75         info->intra_quantizer_matrix[i]     = s->intra_matrix[i];
  76         info->non_intra_quantizer_matrix[i] = s->inter_matrix[i];
  77     }
  78
  79     return ff_vdpau_common_start_frame(pic_ctx, buffer, size);
  80 }
  81
  82 static int vdpau_mpeg_decode_slice(AVCodecContext *avctx,
  83                                    const uint8_t *buffer, uint32_t size)
  84 {
  85     MpegEncContext * const s = avctx->priv_data;
  86     Picture *pic             = s->current_picture_ptr;
  87     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
  88     int val;
  89
  90     val = ff_vdpau_add_buffer(pic_ctx, buffer, size);
  91     if (val < 0)
  92         return val;
  93
  94     pic_ctx->info.mpeg.slice_count++;
  95     return 0;
  96 }
  97
  98 #if CONFIG_MPEG1_VDPAU_HWACCEL
  99 static int vdpau_mpeg1_init(AVCodecContext *avctx)
 100 {
 101     return ff_vdpau_common_init(avctx, VDP_DECODER_PROFILE_MPEG1,
 102                                 VDP_DECODER_LEVEL_MPEG1_NA);
 103 }
 104
 105 AVHWAccel ff_mpeg1_vdpau_hwaccel = {
 106     .name           = "mpeg1_vdpau",
 107     .type           = AVMEDIA_TYPE_VIDEO,
 108     .id             = AV_CODEC_ID_MPEG1VIDEO,
 109     .pix_fmt        = AV_PIX_FMT_VDPAU,
 110     .start_frame    = vdpau_mpeg_start_frame,
 111     .end_frame      = ff_vdpau_mpeg_end_frame,
 112     .decode_slice   = vdpau_mpeg_decode_slice,
 113     .frame_priv_data_size = sizeof(struct vdpau_picture_context),
 114     .init           = vdpau_mpeg1_init,
 115     .uninit         = ff_vdpau_common_uninit,
 116     .priv_data_size = sizeof(VDPAUContext),
 117 };
 118 #endif
 119
 120 #if CONFIG_MPEG2_VDPAU_HWACCEL
 121 static int vdpau_mpeg2_init(AVCodecContext *avctx)
 122 {
 123     VdpDecoderProfile profile;
 124
 125     switch (avctx->profile) {
 126     case FF_PROFILE_MPEG2_MAIN:
 127         profile = VDP_DECODER_PROFILE_MPEG2_MAIN;
 128         break;
 129     case FF_PROFILE_MPEG2_SIMPLE:
 130         profile = VDP_DECODER_PROFILE_MPEG2_SIMPLE;
 131         break;
 132     default:
 133         return AVERROR(EINVAL);
 134     }
 135
 136     return ff_vdpau_common_init(avctx, profile, VDP_DECODER_LEVEL_MPEG2_HL);
 137 }
 138
 139 AVHWAccel ff_mpeg2_vdpau_hwaccel = {
 140     .name           = "mpeg2_vdpau",
 141     .type           = AVMEDIA_TYPE_VIDEO,
 142     .id             = AV_CODEC_ID_MPEG2VIDEO,
 143     .pix_fmt        = AV_PIX_FMT_VDPAU,
 144     .start_frame    = vdpau_mpeg_start_frame,
 145     .end_frame      = ff_vdpau_mpeg_end_frame,
 146     .decode_slice   = vdpau_mpeg_decode_slice,
 147     .frame_priv_data_size = sizeof(struct vdpau_picture_context),
 148     .init           = vdpau_mpeg2_init,
 149     .uninit         = ff_vdpau_common_uninit,
 150     .priv_data_size = sizeof(VDPAUContext),
 151 };
 152 #endif