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vaapi.c
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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  if (!vactx->pic_param_buf_id)
50  return 0;
51 
52  vaUnmapBuffer(vactx->display, vactx->pic_param_buf_id);
53  va_buffers[n_va_buffers++] = vactx->pic_param_buf_id;
54 
55  if (vactx->iq_matrix_buf_id) {
56  vaUnmapBuffer(vactx->display, vactx->iq_matrix_buf_id);
57  va_buffers[n_va_buffers++] = vactx->iq_matrix_buf_id;
58  }
59 
60  if (vactx->bitplane_buf_id) {
61  vaUnmapBuffer(vactx->display, vactx->bitplane_buf_id);
62  va_buffers[n_va_buffers++] = vactx->bitplane_buf_id;
63  }
64 
65  if (vaBeginPicture(vactx->display, vactx->context_id,
66  surface) != VA_STATUS_SUCCESS)
67  return -1;
68 
69  if (vaRenderPicture(vactx->display, vactx->context_id,
70  va_buffers, n_va_buffers) != VA_STATUS_SUCCESS)
71  return -1;
72 
73  if (vaRenderPicture(vactx->display, vactx->context_id,
74  vactx->slice_buf_ids,
75  vactx->n_slice_buf_ids) != VA_STATUS_SUCCESS)
76  return -1;
77 
78  if (vaEndPicture(vactx->display, vactx->context_id) != VA_STATUS_SUCCESS)
79  return -1;
80 
81  return 0;
82 }
83 
84 int ff_vaapi_commit_slices(struct vaapi_context *vactx)
85 {
86  VABufferID *slice_buf_ids;
87  VABufferID slice_param_buf_id, slice_data_buf_id;
88 
89  if (vactx->slice_count == 0)
90  return 0;
91 
92  slice_buf_ids =
93  av_fast_realloc(vactx->slice_buf_ids,
94  &vactx->slice_buf_ids_alloc,
95  (vactx->n_slice_buf_ids + 2) * sizeof(slice_buf_ids[0]));
96  if (!slice_buf_ids)
97  return -1;
98  vactx->slice_buf_ids = slice_buf_ids;
99 
100  slice_param_buf_id = 0;
101  if (vaCreateBuffer(vactx->display, vactx->context_id,
102  VASliceParameterBufferType,
103  vactx->slice_param_size,
104  vactx->slice_count, vactx->slice_params,
105  &slice_param_buf_id) != VA_STATUS_SUCCESS)
106  return -1;
107  vactx->slice_count = 0;
108 
109  slice_data_buf_id = 0;
110  if (vaCreateBuffer(vactx->display, vactx->context_id,
111  VASliceDataBufferType,
112  vactx->slice_data_size,
113  1, (void *)vactx->slice_data,
114  &slice_data_buf_id) != VA_STATUS_SUCCESS)
115  return -1;
116  vactx->slice_data = NULL;
117  vactx->slice_data_size = 0;
118 
119  slice_buf_ids[vactx->n_slice_buf_ids++] = slice_param_buf_id;
120  slice_buf_ids[vactx->n_slice_buf_ids++] = slice_data_buf_id;
121  return 0;
122 }
123 
124 static void *alloc_buffer(struct vaapi_context *vactx, int type, unsigned int size, uint32_t *buf_id)
125 {
126  void *data = NULL;
127 
128  *buf_id = 0;
129  if (vaCreateBuffer(vactx->display, vactx->context_id,
130  type, size, 1, NULL, buf_id) == VA_STATUS_SUCCESS)
131  vaMapBuffer(vactx->display, *buf_id, &data);
132 
133  return data;
134 }
135 
136 void *ff_vaapi_alloc_pic_param(struct vaapi_context *vactx, unsigned int size)
137 {
138  return alloc_buffer(vactx, VAPictureParameterBufferType, size, &vactx->pic_param_buf_id);
139 }
140 
141 void *ff_vaapi_alloc_iq_matrix(struct vaapi_context *vactx, unsigned int size)
142 {
143  return alloc_buffer(vactx, VAIQMatrixBufferType, size, &vactx->iq_matrix_buf_id);
144 }
145 
146 uint8_t *ff_vaapi_alloc_bitplane(struct vaapi_context *vactx, uint32_t size)
147 {
148  return alloc_buffer(vactx, VABitPlaneBufferType, size, &vactx->bitplane_buf_id);
149 }
150 
151 VASliceParameterBufferBase *ff_vaapi_alloc_slice(struct vaapi_context *vactx, const uint8_t *buffer, uint32_t size)
152 {
153  uint8_t *slice_params;
154  VASliceParameterBufferBase *slice_param;
155 
156  if (!vactx->slice_data)
157  vactx->slice_data = buffer;
158  if (vactx->slice_data + vactx->slice_data_size != buffer) {
159  if (ff_vaapi_commit_slices(vactx) < 0)
160  return NULL;
161  vactx->slice_data = buffer;
162  }
163 
164  slice_params =
165  av_fast_realloc(vactx->slice_params,
166  &vactx->slice_params_alloc,
167  (vactx->slice_count + 1) * vactx->slice_param_size);
168  if (!slice_params)
169  return NULL;
170  vactx->slice_params = slice_params;
171 
172  slice_param = (VASliceParameterBufferBase *)(slice_params + vactx->slice_count * vactx->slice_param_size);
173  slice_param->slice_data_size = size;
174  slice_param->slice_data_offset = vactx->slice_data_size;
175  slice_param->slice_data_flag = VA_SLICE_DATA_FLAG_ALL;
176 
177  vactx->slice_count++;
178  vactx->slice_data_size += size;
179  return slice_param;
180 }
181 
182 void ff_vaapi_common_end_frame(AVCodecContext *avctx)
183 {
184  struct vaapi_context * const vactx = avctx->hwaccel_context;
185 
186  av_dlog(avctx, "ff_vaapi_common_end_frame()\n");
187 
188  destroy_buffers(vactx->display, &vactx->pic_param_buf_id, 1);
189  destroy_buffers(vactx->display, &vactx->iq_matrix_buf_id, 1);
190  destroy_buffers(vactx->display, &vactx->bitplane_buf_id, 1);
191  destroy_buffers(vactx->display, vactx->slice_buf_ids, vactx->n_slice_buf_ids);
192  av_freep(&vactx->slice_buf_ids);
193  av_freep(&vactx->slice_params);
194  vactx->n_slice_buf_ids = 0;
195  vactx->slice_buf_ids_alloc = 0;
196  vactx->slice_count = 0;
197  vactx->slice_params_alloc = 0;
198 }
199 
200 int ff_vaapi_mpeg_end_frame(AVCodecContext *avctx)
201 {
202  struct vaapi_context * const vactx = avctx->hwaccel_context;
203  MpegEncContext *s = avctx->priv_data;
204  int ret;
205 
206  ret = ff_vaapi_commit_slices(vactx);
207  if (ret < 0)
208  goto finish;
209 
210  ret = ff_vaapi_render_picture(vactx,
211  ff_vaapi_get_surface_id(s->current_picture_ptr));
212  if (ret < 0)
213  goto finish;
214 
215  ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
216 
217 finish:
218  ff_vaapi_common_end_frame(avctx);
219  return ret;
220 }
221 
222 /* @} */
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