libavcodec/vaapi.c

   1 /*
   2  * Video Acceleration API (video decoding)
   3  * HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1
   4  *
   5  * Copyright (C) 2008-2009 Splitted-Desktop Systems
   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 "h264.h"
  25 #include "vaapi_internal.h"
  26
  27 /**
  28  * @addtogroup VAAPI_Decoding
  29  *
  30  * @{
  31  */
  32
  33 static void destroy_buffers(VADisplay display, VABufferID *buffers, unsigned int n_buffers)
  34 {
  35     unsigned int i;
  36     for (i = 0; i < n_buffers; i++) {
  37         if (buffers[i]) {
  38             vaDestroyBuffer(display, buffers[i]);
  39             buffers[i] = 0;
  40         }
  41     }
  42 }
  43
  44 int ff_vaapi_render_picture(struct vaapi_context *vactx, VASurfaceID surface)
  45 {
  46     VABufferID va_buffers[3];
  47     unsigned int n_va_buffers = 0;
  48
  49     vaUnmapBuffer(vactx->display, vactx->pic_param_buf_id);
  50     va_buffers[n_va_buffers++] = vactx->pic_param_buf_id;
  51
  52     if (vactx->iq_matrix_buf_id) {
  53         vaUnmapBuffer(vactx->display, vactx->iq_matrix_buf_id);
  54         va_buffers[n_va_buffers++] = vactx->iq_matrix_buf_id;
  55     }
  56
  57     if (vactx->bitplane_buf_id) {
  58         vaUnmapBuffer(vactx->display, vactx->bitplane_buf_id);
  59         va_buffers[n_va_buffers++] = vactx->bitplane_buf_id;
  60     }
  61
  62     if (vaBeginPicture(vactx->display, vactx->context_id,
  63                        surface) != VA_STATUS_SUCCESS)
  64         return -1;
  65
  66     if (vaRenderPicture(vactx->display, vactx->context_id,
  67                         va_buffers, n_va_buffers) != VA_STATUS_SUCCESS)
  68         return -1;
  69
  70     if (vaRenderPicture(vactx->display, vactx->context_id,
  71                         vactx->slice_buf_ids,
  72                         vactx->n_slice_buf_ids) != VA_STATUS_SUCCESS)
  73         return -1;
  74
  75     if (vaEndPicture(vactx->display, vactx->context_id) != VA_STATUS_SUCCESS)
  76         return -1;
  77
  78     return 0;
  79 }
  80
  81 int ff_vaapi_commit_slices(struct vaapi_context *vactx)
  82 {
  83     VABufferID *slice_buf_ids;
  84     VABufferID slice_param_buf_id, slice_data_buf_id;
  85
  86     if (vactx->slice_count == 0)
  87         return 0;
  88
  89     slice_buf_ids =
  90         av_fast_realloc(vactx->slice_buf_ids,
  91                         &vactx->slice_buf_ids_alloc,
  92                         (vactx->n_slice_buf_ids + 2) * sizeof(slice_buf_ids[0]));
  93     if (!slice_buf_ids)
  94         return -1;
  95     vactx->slice_buf_ids = slice_buf_ids;
  96
  97     slice_param_buf_id = 0;
  98     if (vaCreateBuffer(vactx->display, vactx->context_id,
  99                        VASliceParameterBufferType,
 100                        vactx->slice_param_size,
 101                        vactx->slice_count, vactx->slice_params,
 102                        &slice_param_buf_id) != VA_STATUS_SUCCESS)
 103         return -1;
 104     vactx->slice_count = 0;
 105
 106     slice_data_buf_id = 0;
 107     if (vaCreateBuffer(vactx->display, vactx->context_id,
 108                        VASliceDataBufferType,
 109                        vactx->slice_data_size,
 110                        1, (void *)vactx->slice_data,
 111                        &slice_data_buf_id) != VA_STATUS_SUCCESS)
 112         return -1;
 113     vactx->slice_data = NULL;
 114     vactx->slice_data_size = 0;
 115
 116     slice_buf_ids[vactx->n_slice_buf_ids++] = slice_param_buf_id;
 117     slice_buf_ids[vactx->n_slice_buf_ids++] = slice_data_buf_id;
 118     return 0;
 119 }
 120
 121 static void *alloc_buffer(struct vaapi_context *vactx, int type, unsigned int size, uint32_t *buf_id)
 122 {
 123     void *data = NULL;
 124
 125     *buf_id = 0;
 126     if (vaCreateBuffer(vactx->display, vactx->context_id,
 127                        type, size, 1, NULL, buf_id) == VA_STATUS_SUCCESS)
 128         vaMapBuffer(vactx->display, *buf_id, &data);
 129
 130     return data;
 131 }
 132
 133 void *ff_vaapi_alloc_pic_param(struct vaapi_context *vactx, unsigned int size)
 134 {
 135     return alloc_buffer(vactx, VAPictureParameterBufferType, size, &vactx->pic_param_buf_id);
 136 }
 137
 138 void *ff_vaapi_alloc_iq_matrix(struct vaapi_context *vactx, unsigned int size)
 139 {
 140     return alloc_buffer(vactx, VAIQMatrixBufferType, size, &vactx->iq_matrix_buf_id);
 141 }
 142
 143 uint8_t *ff_vaapi_alloc_bitplane(struct vaapi_context *vactx, uint32_t size)
 144 {
 145     return alloc_buffer(vactx, VABitPlaneBufferType, size, &vactx->bitplane_buf_id);
 146 }
 147
 148 VASliceParameterBufferBase *ff_vaapi_alloc_slice(struct vaapi_context *vactx, const uint8_t *buffer, uint32_t size)
 149 {
 150     uint8_t *slice_params;
 151     VASliceParameterBufferBase *slice_param;
 152
 153     if (!vactx->slice_data)
 154         vactx->slice_data = buffer;
 155     if (vactx->slice_data + vactx->slice_data_size != buffer) {
 156         if (ff_vaapi_commit_slices(vactx) < 0)
 157             return NULL;
 158         vactx->slice_data = buffer;
 159     }
 160
 161     slice_params =
 162         av_fast_realloc(vactx->slice_params,
 163                         &vactx->slice_params_alloc,
 164                         (vactx->slice_count + 1) * vactx->slice_param_size);
 165     if (!slice_params)
 166         return NULL;
 167     vactx->slice_params = slice_params;
 168
 169     slice_param = (VASliceParameterBufferBase *)(slice_params + vactx->slice_count * vactx->slice_param_size);
 170     slice_param->slice_data_size   = size;
 171     slice_param->slice_data_offset = vactx->slice_data_size;
 172     slice_param->slice_data_flag   = VA_SLICE_DATA_FLAG_ALL;
 173
 174     vactx->slice_count++;
 175     vactx->slice_data_size += size;
 176     return slice_param;
 177 }
 178
 179 void ff_vaapi_common_end_frame(AVCodecContext *avctx)
 180 {
 181     struct vaapi_context * const vactx = avctx->hwaccel_context;
 182
 183     av_dlog(avctx, "ff_vaapi_common_end_frame()\n");
 184
 185     destroy_buffers(vactx->display, &vactx->pic_param_buf_id, 1);
 186     destroy_buffers(vactx->display, &vactx->iq_matrix_buf_id, 1);
 187     destroy_buffers(vactx->display, &vactx->bitplane_buf_id, 1);
 188     destroy_buffers(vactx->display, vactx->slice_buf_ids, vactx->n_slice_buf_ids);
 189     av_freep(&vactx->slice_buf_ids);
 190     av_freep(&vactx->slice_params);
 191     vactx->n_slice_buf_ids     = 0;
 192     vactx->slice_buf_ids_alloc = 0;
 193     vactx->slice_count         = 0;
 194     vactx->slice_params_alloc  = 0;
 195 }
 196
 197 int ff_vaapi_mpeg_end_frame(AVCodecContext *avctx)
 198 {
 199     struct vaapi_context * const vactx = avctx->hwaccel_context;
 200     MpegEncContext *s = avctx->priv_data;
 201     int ret;
 202
 203     ret = ff_vaapi_commit_slices(vactx);
 204     if (ret < 0)
 205         goto finish;
 206
 207     ret = ff_vaapi_render_picture(vactx,
 208                                   ff_vaapi_get_surface_id(s->current_picture_ptr));
 209     if (ret < 0)
 210         goto finish;
 211
 212     ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
 213
 214 finish:
 215     ff_vaapi_common_end_frame(avctx->priv_data);
 216     return ret;
 217 }
 218
 219 /* @} */