FFmpeg
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
vaapi.c
Go to the documentation of this file.
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 "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);
216  return ret;
217 }
218 
219 /* @} */
Generated on Sat May 25 2013 04:01:12 for FFmpeg by   doxygen 1.8.2