git.sesse.net Git - ffmpeg/blob - libavcodec/vdpau.c

   1 /*
   2  * Video Decode and Presentation API for UNIX (VDPAU) is used for
   3  * HW decode acceleration for MPEG-1/2, MPEG-4 ASP, H.264 and VC-1.
   4  *
   5  * Copyright (c) 2008 NVIDIA
   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
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #include <limits.h>
  25 #include "avcodec.h"
  26 #include "h264.h"
  27 #include "vc1.h"
  28
  29 #undef NDEBUG
  30 #include <assert.h>
  31
  32 #include "vdpau.h"
  33 #include "vdpau_internal.h"
  34
  35 /**
  36  * @addtogroup VDPAU_Decoding
  37  *
  38  * @{
  39  */
  40
  41 int ff_vdpau_common_start_frame(Picture *pic,
  42                                 av_unused const uint8_t *buffer,
  43                                 av_unused uint32_t size)
  44 {
  45     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
  46
  47     pic_ctx->bitstream_buffers_allocated = 0;
  48     pic_ctx->bitstream_buffers_used      = 0;
  49     pic_ctx->bitstream_buffers           = NULL;
  50     return 0;
  51 }
  52
  53 #if CONFIG_H263_VDPAU_HWACCEL  || CONFIG_MPEG1_VDPAU_HWACCEL || \
  54     CONFIG_MPEG2_VDPAU_HWACCEL || CONFIG_MPEG4_VDPAU_HWACCEL || \
  55     CONFIG_VC1_VDPAU_HWACCEL   || CONFIG_WMV3_VDPAU_HWACCEL
  56 int ff_vdpau_mpeg_end_frame(AVCodecContext *avctx)
  57 {
  58     AVVDPAUContext *hwctx = avctx->hwaccel_context;
  59     MpegEncContext *s = avctx->priv_data;
  60     Picture *pic = s->current_picture_ptr;
  61     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
  62     VdpVideoSurface surf = ff_vdpau_get_surface_id(pic);
  63
  64     hwctx->render(hwctx->decoder, surf, (void *)&pic_ctx->info,
  65                   pic_ctx->bitstream_buffers_used, pic_ctx->bitstream_buffers);
  66
  67     ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
  68     av_freep(&pic_ctx->bitstream_buffers);
  69
  70     return 0;
  71 }
  72 #endif
  73
  74 int ff_vdpau_add_buffer(Picture *pic, const uint8_t *buf, uint32_t size)
  75 {
  76     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
  77     VdpBitstreamBuffer *buffers = pic_ctx->bitstream_buffers;
  78
  79     buffers = av_fast_realloc(buffers, &pic_ctx->bitstream_buffers_allocated,
  80                               (pic_ctx->bitstream_buffers_used + 1) * sizeof(*buffers));
  81     if (!buffers)
  82         return AVERROR(ENOMEM);
  83
  84     pic_ctx->bitstream_buffers = buffers;
  85     buffers += pic_ctx->bitstream_buffers_used++;
  86
  87     buffers->struct_version  = VDP_BITSTREAM_BUFFER_VERSION;
  88     buffers->bitstream       = buf;
  89     buffers->bitstream_bytes = size;
  90     return 0;
  91 }
  92
  93 /* @}*/