FFmpeg  2.1.1
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 
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 =
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 
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 =
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 
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 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:44
av_dlog(ac->avr,"%d samples - audio_convert: %s to %s (%s)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic?ac->func_descr_generic:ac->func_descr)
This structure is used to share data between the FFmpeg 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
uint32_t * slice_buf_ids
Slice parameter/data buffer IDs.
Definition: vaapi.h:105
void av_freep(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
Definition: mem.c:234
uint8_t
static void * alloc_buffer(struct vaapi_context *vactx, int type, unsigned int size, uint32_t *buf_id)
Definition: vaapi.c:124
const char data[16]
Definition: mxf.c:68
uint32_t slice_data_size
Current size of slice data.
Definition: vaapi.h:168
H.264 / AVC / MPEG4 part10 codec.
void ff_vaapi_common_end_frame(AVCodecContext *avctx)
Common AVHWAccel.end_frame() implementation.
Definition: vaapi.c:182
void * ff_vaapi_alloc_pic_param(struct vaapi_context *vactx, unsigned int size)
Allocate a new picture parameter buffer.
Definition: vaapi.c:136
static void destroy_buffers(VADisplay display, VABufferID *buffers, unsigned int n_buffers)
Definition: vaapi.c:33
const uint8_t * slice_data
Pointer to slice data buffer base.
Definition: vaapi.h:160
unsigned int slice_param_size
Size of a VASliceParameterBuffer element.
Definition: vaapi.h:137
static char buffer[20]
Definition: seek-test.c:31
void * slice_params
Pointer to VASliceParameterBuffers.
Definition: vaapi.h:129
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: utils.c:120
void * hwaccel_context
Hardware accelerator context.
Definition: avcodec.h:2513
main external API structure.
Definition: avcodec.h:1146
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:151
unsigned int slice_count
Number of slices currently filled in.
Definition: vaapi.h:153
#define type
unsigned int slice_buf_ids_alloc
Size of pre-allocated slice_buf_ids.
Definition: vaapi.h:121
int ff_vaapi_commit_slices(struct vaapi_context *vactx)
Definition: vaapi.c:84
void * ff_vaapi_alloc_iq_matrix(struct vaapi_context *vactx, unsigned int size)
Allocate a new IQ matrix buffer.
Definition: vaapi.c:141
unsigned int n_slice_buf_ids
Number of effective slice buffer IDs to send to the HW.
Definition: vaapi.h:113
uint8_t * ff_vaapi_alloc_bitplane(struct vaapi_context *vactx, uint32_t size)
Allocate a new bit-plane buffer.
Definition: vaapi.c:146
void * display
Window system dependent data.
Definition: vaapi.h:57
uint32_t pic_param_buf_id
VAPictureParameterBuffer ID.
Definition: vaapi.h:81