Libav
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 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 "h264dec.h"
25 #include "mpegvideo.h"
26 #include "vaapi_internal.h"
27 
34 static void destroy_buffers(VADisplay display, VABufferID *buffers, unsigned int n_buffers)
35 {
36  unsigned int i;
37  for (i = 0; i < n_buffers; i++) {
38  if (buffers[i]) {
39  vaDestroyBuffer(display, buffers[i]);
40  buffers[i] = 0;
41  }
42  }
43 }
44 
45 int ff_vaapi_render_picture(struct vaapi_context *vactx, VASurfaceID surface)
46 {
47  VABufferID va_buffers[3];
48  unsigned int n_va_buffers = 0;
49 
50  vaUnmapBuffer(vactx->display, vactx->pic_param_buf_id);
51  va_buffers[n_va_buffers++] = vactx->pic_param_buf_id;
52 
53  if (vactx->iq_matrix_buf_id) {
54  vaUnmapBuffer(vactx->display, vactx->iq_matrix_buf_id);
55  va_buffers[n_va_buffers++] = vactx->iq_matrix_buf_id;
56  }
57 
58  if (vactx->bitplane_buf_id) {
59  vaUnmapBuffer(vactx->display, vactx->bitplane_buf_id);
60  va_buffers[n_va_buffers++] = vactx->bitplane_buf_id;
61  }
62 
63  if (vaBeginPicture(vactx->display, vactx->context_id,
64  surface) != VA_STATUS_SUCCESS)
65  return -1;
66 
67  if (vaRenderPicture(vactx->display, vactx->context_id,
68  va_buffers, n_va_buffers) != VA_STATUS_SUCCESS)
69  return -1;
70 
71  if (vaRenderPicture(vactx->display, vactx->context_id,
72  vactx->slice_buf_ids,
73  vactx->n_slice_buf_ids) != VA_STATUS_SUCCESS)
74  return -1;
75 
76  if (vaEndPicture(vactx->display, vactx->context_id) != VA_STATUS_SUCCESS)
77  return -1;
78 
79  return 0;
80 }
81 
83 {
84  VABufferID *slice_buf_ids;
85  VABufferID slice_param_buf_id, slice_data_buf_id;
86 
87  if (vactx->slice_count == 0)
88  return 0;
89 
90  slice_buf_ids =
92  &vactx->slice_buf_ids_alloc,
93  (vactx->n_slice_buf_ids + 2) * sizeof(slice_buf_ids[0]));
94  if (!slice_buf_ids)
95  return -1;
96  vactx->slice_buf_ids = slice_buf_ids;
97 
98  slice_param_buf_id = 0;
99  if (vaCreateBuffer(vactx->display, vactx->context_id,
100  VASliceParameterBufferType,
101  vactx->slice_param_size,
102  vactx->slice_count, vactx->slice_params,
103  &slice_param_buf_id) != VA_STATUS_SUCCESS)
104  return -1;
105  vactx->slice_count = 0;
106 
107  slice_data_buf_id = 0;
108  if (vaCreateBuffer(vactx->display, vactx->context_id,
109  VASliceDataBufferType,
110  vactx->slice_data_size,
111  1, (void *)vactx->slice_data,
112  &slice_data_buf_id) != VA_STATUS_SUCCESS)
113  return -1;
114  vactx->slice_data = NULL;
115  vactx->slice_data_size = 0;
116 
117  slice_buf_ids[vactx->n_slice_buf_ids++] = slice_param_buf_id;
118  slice_buf_ids[vactx->n_slice_buf_ids++] = slice_data_buf_id;
119  return 0;
120 }
121 
122 static void *alloc_buffer(struct vaapi_context *vactx, int type, unsigned int size, uint32_t *buf_id)
123 {
124  void *data = NULL;
125 
126  *buf_id = 0;
127  if (vaCreateBuffer(vactx->display, vactx->context_id,
128  type, size, 1, NULL, buf_id) == VA_STATUS_SUCCESS)
129  vaMapBuffer(vactx->display, *buf_id, &data);
130 
131  return data;
132 }
133 
134 void *ff_vaapi_alloc_pic_param(struct vaapi_context *vactx, unsigned int size)
135 {
136  return alloc_buffer(vactx, VAPictureParameterBufferType, size, &vactx->pic_param_buf_id);
137 }
138 
139 void *ff_vaapi_alloc_iq_matrix(struct vaapi_context *vactx, unsigned int size)
140 {
141  return alloc_buffer(vactx, VAIQMatrixBufferType, size, &vactx->iq_matrix_buf_id);
142 }
143 
145 {
146  return alloc_buffer(vactx, VABitPlaneBufferType, size, &vactx->bitplane_buf_id);
147 }
148 
149 VASliceParameterBufferBase *ff_vaapi_alloc_slice(struct vaapi_context *vactx, const uint8_t *buffer, uint32_t size)
150 {
151  uint8_t *slice_params;
152  VASliceParameterBufferBase *slice_param;
153 
154  if (!vactx->slice_data)
155  vactx->slice_data = buffer;
156  if (vactx->slice_data + vactx->slice_data_size != buffer) {
157  if (ff_vaapi_commit_slices(vactx) < 0)
158  return NULL;
159  vactx->slice_data = buffer;
160  }
161 
162  slice_params =
164  &vactx->slice_params_alloc,
165  (vactx->slice_count + 1) * vactx->slice_param_size);
166  if (!slice_params)
167  return NULL;
168  vactx->slice_params = slice_params;
169 
170  slice_param = (VASliceParameterBufferBase *)(slice_params + vactx->slice_count * vactx->slice_param_size);
171  slice_param->slice_data_size = size;
172  slice_param->slice_data_offset = vactx->slice_data_size;
173  slice_param->slice_data_flag = VA_SLICE_DATA_FLAG_ALL;
174 
175  vactx->slice_count++;
176  vactx->slice_data_size += size;
177  return slice_param;
178 }
179 
181 {
182  struct vaapi_context * const vactx = avctx->hwaccel_context;
183 
184  destroy_buffers(vactx->display, &vactx->pic_param_buf_id, 1);
185  destroy_buffers(vactx->display, &vactx->iq_matrix_buf_id, 1);
186  destroy_buffers(vactx->display, &vactx->bitplane_buf_id, 1);
187  destroy_buffers(vactx->display, vactx->slice_buf_ids, vactx->n_slice_buf_ids);
188  av_freep(&vactx->slice_buf_ids);
189  av_freep(&vactx->slice_params);
190  vactx->n_slice_buf_ids = 0;
191  vactx->slice_buf_ids_alloc = 0;
192  vactx->slice_count = 0;
193  vactx->slice_params_alloc = 0;
194 }
195 
196 #if CONFIG_H263_VAAPI_HWACCEL || CONFIG_MPEG1_VAAPI_HWACCEL || \
197  CONFIG_MPEG2_VAAPI_HWACCEL || CONFIG_MPEG4_VAAPI_HWACCEL || \
198  CONFIG_VC1_VAAPI_HWACCEL || CONFIG_WMV3_VAAPI_HWACCEL
200 {
201  struct vaapi_context * const vactx = avctx->hwaccel_context;
202  MpegEncContext *s = avctx->priv_data;
203  int ret;
204 
205  ret = ff_vaapi_commit_slices(vactx);
206  if (ret < 0)
207  goto finish;
208 
209  ret = ff_vaapi_render_picture(vactx,
211  if (ret < 0)
212  goto finish;
213 
215 
216 finish:
218  return ret;
219 }
220 #endif
221 
222 /* @} */
const uint8_t * slice_data
Pointer to slice data buffer base.
Definition: vaapi.h:160
int size
uint32_t iq_matrix_buf_id
VAIQMatrixBuffer ID.
Definition: vaapi.h:89
uint32_t bitplane_buf_id
VABitPlaneBuffer ID (for VC-1 decoding)
Definition: vaapi.h:97
uint32_t context_id
Context ID (video decode pipeline)
Definition: vaapi.h:73
int ff_vaapi_render_picture(struct vaapi_context *vactx, VASurfaceID surface)
Definition: vaapi.c:45
mpegvideo header.
This structure is used to share data between the Libav library and the client video application...
Definition: vaapi.h:50
unsigned int slice_params_alloc
Size of pre-allocated slice_params.
Definition: vaapi.h:145
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
Definition: mem.c:202
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
Definition: mpegvideo.c:1737
static char buffer[20]
Definition: seek.c:32
uint8_t
void * hwaccel_context
Hardware accelerator context.
Definition: avcodec.h:2708
static void * alloc_buffer(struct vaapi_context *vactx, int type, unsigned int size, uint32_t *buf_id)
Definition: vaapi.c:122
const char data[16]
Definition: mxf.c:70
static void finish(void)
Definition: movenc.c:338
uint32_t slice_data_size
Current size of slice data.
Definition: vaapi.h:168
void * av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
Reallocate the given block if it is not large enough, otherwise do nothing.
Definition: mem.c:375
void ff_vaapi_common_end_frame(AVCodecContext *avctx)
Common AVHWAccel.end_frame() implementation.
Definition: vaapi.c:180
void * ff_vaapi_alloc_pic_param(struct vaapi_context *vactx, unsigned int size)
Allocate a new picture parameter buffer.
Definition: vaapi.c:134
static void destroy_buffers(VADisplay display, VABufferID *buffers, unsigned int n_buffers)
Definition: vaapi.c:34
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:179
static VASurfaceID ff_vaapi_get_surface_id(AVFrame *pic)
Extract VASurfaceID from an AVFrame.
unsigned int slice_param_size
Size of a VASliceParameterBuffer element.
Definition: vaapi.h:137
H.264 / AVC / MPEG-4 part10 codec.
void * display
Window system dependent data.
Definition: vaapi.h:57
NULL
Definition: eval.c:55
main external API structure.
Definition: avcodec.h:1409
VASliceParameterBufferBase * ff_vaapi_alloc_slice(struct vaapi_context *vactx, const uint8_t *buffer, uint32_t size)
Allocate a new slice descriptor for the input slice.
Definition: vaapi.c:149
uint32_t * slice_buf_ids
Slice parameter/data buffer IDs.
Definition: vaapi.h:105
struct AVFrame * f
Definition: mpegpicture.h:46
unsigned int slice_count
Number of slices currently filled in.
Definition: vaapi.h:153
unsigned int slice_buf_ids_alloc
Size of pre-allocated slice_buf_ids.
Definition: vaapi.h:121
MpegEncContext.
Definition: mpegvideo.h:76
struct AVCodecContext * avctx
Definition: mpegvideo.h:93
int ff_vaapi_commit_slices(struct vaapi_context *vactx)
Definition: vaapi.c:82
void * ff_vaapi_alloc_iq_matrix(struct vaapi_context *vactx, unsigned int size)
Allocate a new IQ matrix buffer.
Definition: vaapi.c:139
void * priv_data
Definition: avcodec.h:1451
unsigned int n_slice_buf_ids
Number of effective slice buffer IDs to send to the HW.
Definition: vaapi.h:113
void * slice_params
Pointer to VASliceParameterBuffers.
Definition: vaapi.h:129
uint8_t * ff_vaapi_alloc_bitplane(struct vaapi_context *vactx, uint32_t size)
Allocate a new bit-plane buffer.
Definition: vaapi.c:144
int ff_vaapi_mpeg_end_frame(AVCodecContext *avctx)
uint32_t pic_param_buf_id
VAPictureParameterBuffer ID.
Definition: vaapi.h:81