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 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
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #include "vaapi_internal.h"
  25
  26 /**
  27  * \addtogroup VAAPI_Decoding
  28  *
  29  * @{
  30  */
  31
  32 static void destroy_buffers(VADisplay display, VABufferID *buffers, unsigned int n_buffers)
  33 {
  34     unsigned int i;
  35     for (i = 0; i < n_buffers; i++) {
  36         if (buffers[i]) {
  37             vaDestroyBuffer(display, buffers[i]);
  38             buffers[i] = 0;
  39         }
  40     }
  41 }
  42
  43 static int render_picture(struct vaapi_context *vactx, VASurfaceID surface)
  44 {
  45     VABufferID va_buffers[3];
  46     unsigned int n_va_buffers = 0;
  47
  48     vaUnmapBuffer(vactx->display, vactx->pic_param_buf_id);
  49     va_buffers[n_va_buffers++] = vactx->pic_param_buf_id;
  50
  51     if (vactx->iq_matrix_buf_id) {
  52         vaUnmapBuffer(vactx->display, vactx->iq_matrix_buf_id);
  53         va_buffers[n_va_buffers++] = vactx->iq_matrix_buf_id;
  54     }
  55
  56     if (vactx->bitplane_buf_id) {
  57         vaUnmapBuffer(vactx->display, vactx->bitplane_buf_id);
  58         va_buffers[n_va_buffers++] = vactx->bitplane_buf_id;
  59     }
  60
  61     if (vaBeginPicture(vactx->display, vactx->context_id,
  62                        surface) != VA_STATUS_SUCCESS)
  63         return -1;
  64
  65     if (vaRenderPicture(vactx->display, vactx->context_id,
  66                         va_buffers, n_va_buffers) != VA_STATUS_SUCCESS)
  67         return -1;
  68
  69     if (vaRenderPicture(vactx->display, vactx->context_id,
  70                         vactx->slice_buf_ids,
  71                         vactx->n_slice_buf_ids) != VA_STATUS_SUCCESS)
  72         return -1;
  73
  74     if (vaEndPicture(vactx->display, vactx->context_id) != VA_STATUS_SUCCESS)
  75         return -1;
  76
  77     return 0;
  78 }
  79
  80 static int commit_slices(struct vaapi_context *vactx)
  81 {
  82     VABufferID *slice_buf_ids;
  83     VABufferID slice_param_buf_id, slice_data_buf_id;
  84
  85     if (vactx->slice_count == 0)
  86         return 0;
  87
  88     slice_buf_ids =
  89         av_fast_realloc(vactx->slice_buf_ids,
  90                         &vactx->slice_buf_ids_alloc,
  91                         (vactx->n_slice_buf_ids + 2) * sizeof(slice_buf_ids[0]));
  92     if (!slice_buf_ids)
  93         return -1;
  94     vactx->slice_buf_ids = slice_buf_ids;
  95
  96     slice_param_buf_id = 0;
  97     if (vaCreateBuffer(vactx->display, vactx->context_id,
  98                        VASliceParameterBufferType,
  99                        vactx->slice_param_size,
 100                        vactx->slice_count, vactx->slice_params,
 101                        &slice_param_buf_id) != VA_STATUS_SUCCESS)
 102         return -1;
 103     vactx->slice_count = 0;
 104
 105     slice_data_buf_id = 0;
 106     if (vaCreateBuffer(vactx->display, vactx->context_id,
 107                        VASliceDataBufferType,
 108                        vactx->slice_data_size,
 109                        1, (void *)vactx->slice_data,
 110                        &slice_data_buf_id) != VA_STATUS_SUCCESS)
 111         return -1;
 112     vactx->slice_data = NULL;
 113     vactx->slice_data_size = 0;
 114
 115     slice_buf_ids[vactx->n_slice_buf_ids++] = slice_param_buf_id;
 116     slice_buf_ids[vactx->n_slice_buf_ids++] = slice_data_buf_id;
 117     return 0;
 118 }
 119
 120 static void *alloc_buffer(struct vaapi_context *vactx, int type, unsigned int size, uint32_t *buf_id)
 121 {
 122     void *data = NULL;
 123
 124     *buf_id = 0;
 125     if (vaCreateBuffer(vactx->display, vactx->context_id,
 126                        type, size, 1, NULL, buf_id) == VA_STATUS_SUCCESS)
 127         vaMapBuffer(vactx->display, *buf_id, &data);
 128
 129     return data;
 130 }
 131
 132 void *ff_vaapi_alloc_picture(struct vaapi_context *vactx, unsigned int size)
 133 {
 134     return alloc_buffer(vactx, VAPictureParameterBufferType, size, &vactx->pic_param_buf_id);
 135 }
 136
 137 void *ff_vaapi_alloc_iq_matrix(struct vaapi_context *vactx, unsigned int size)
 138 {
 139     return alloc_buffer(vactx, VAIQMatrixBufferType, size, &vactx->iq_matrix_buf_id);
 140 }
 141
 142 uint8_t *ff_vaapi_alloc_bitplane(struct vaapi_context *vactx, uint32_t size)
 143 {
 144     return alloc_buffer(vactx, VABitPlaneBufferType, size, &vactx->bitplane_buf_id);
 145 }
 146
 147 VASliceParameterBufferBase *ff_vaapi_alloc_slice(struct vaapi_context *vactx, const uint8_t *buffer, uint32_t size)
 148 {
 149     uint8_t *slice_params;
 150     VASliceParameterBufferBase *slice_param;
 151
 152     if (!vactx->slice_data)
 153         vactx->slice_data = buffer;
 154     if (vactx->slice_data + vactx->slice_data_size != buffer) {
 155         if (commit_slices(vactx) < 0)
 156             return NULL;
 157         vactx->slice_data = buffer;
 158     }
 159
 160     slice_params =
 161         av_fast_realloc(vactx->slice_params,
 162                         &vactx->slice_params_alloc,
 163                         (vactx->slice_count + 1) * vactx->slice_param_size);
 164     if (!slice_params)
 165         return NULL;
 166     vactx->slice_params = slice_params;
 167
 168     slice_param = (VASliceParameterBufferBase *)(slice_params + vactx->slice_count * vactx->slice_param_size);
 169     slice_param->slice_data_size   = size;
 170     slice_param->slice_data_offset = vactx->slice_data_size;
 171     slice_param->slice_data_flag   = VA_SLICE_DATA_FLAG_ALL;
 172
 173     vactx->slice_count++;
 174     vactx->slice_data_size += size;
 175     return slice_param;
 176 }
 177
 178 int ff_vaapi_common_end_frame(MpegEncContext *s)
 179 {
 180     struct vaapi_context * const vactx = s->avctx->hwaccel_context;
 181     int ret = -1;
 182
 183     dprintf(s->avctx, "ff_vaapi_common_end_frame()\n");
 184
 185     if (commit_slices(vactx) < 0)
 186         goto done;
 187     if (vactx->n_slice_buf_ids > 0) {
 188         if (render_picture(vactx, ff_vaapi_get_surface(s->current_picture_ptr)) < 0)
 189             goto done;
 190         ff_draw_horiz_band(s, 0, s->avctx->height);
 191     }
 192     ret = 0;
 193
 194 done:
 195     destroy_buffers(vactx->display, &vactx->pic_param_buf_id, 1);
 196     destroy_buffers(vactx->display, &vactx->iq_matrix_buf_id, 1);
 197     destroy_buffers(vactx->display, &vactx->bitplane_buf_id, 1);
 198     destroy_buffers(vactx->display, vactx->slice_buf_ids, vactx->n_slice_buf_ids);
 199     av_freep(&vactx->slice_buf_ids);
 200     av_freep(&vactx->slice_params);
 201     vactx->n_slice_buf_ids     = 0;
 202     vactx->slice_buf_ids_alloc = 0;
 203     vactx->slice_count         = 0;
 204     vactx->slice_params_alloc  = 0;
 205     return ret;
 206 }
 207
 208 /* @} */