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 "h264.h"
25 #include "vaapi_internal.h"
26 
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 
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 =
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 
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 =
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 
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 #if CONFIG_H263_VAAPI_HWACCEL || CONFIG_MPEG1_VAAPI_HWACCEL || \
198  CONFIG_MPEG2_VAAPI_HWACCEL || CONFIG_MPEG4_VAAPI_HWACCEL || \
199  CONFIG_VC1_VAAPI_HWACCEL || CONFIG_WMV3_VAAPI_HWACCEL
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,
212  if (ret < 0)
213  goto finish;
214 
216 
217 finish:
219  return ret;
220 }
221 #endif
222 
223 /* @} */
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: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 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:198
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
Definition: mpegvideo.c:2435
uint8_t
void * hwaccel_context
Hardware accelerator context.
Definition: avcodec.h:2460
static void * alloc_buffer(struct vaapi_context *vactx, int type, unsigned int size, uint32_t *buf_id)
Definition: vaapi.c:121
const char data[16]
Definition: mxf.c:70
uint32_t slice_data_size
Current size of slice data.
Definition: vaapi.h:168
H.264 / AVC / MPEG4 part10 codec.
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:369
void ff_vaapi_common_end_frame(AVCodecContext *avctx)
Common AVHWAccel.end_frame() implementation.
Definition: vaapi.c:179
void * ff_vaapi_alloc_pic_param(struct vaapi_context *vactx, unsigned int size)
Allocate a new picture parameter buffer.
Definition: vaapi.c:133
static void destroy_buffers(VADisplay display, VABufferID *buffers, unsigned int n_buffers)
Definition: vaapi.c:33
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:310
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
static char buffer[20]
Definition: seek-test.c:31
void * display
Window system dependent data.
Definition: vaapi.h:57
NULL
Definition: eval.c:55
main external API structure.
Definition: avcodec.h:1050
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:148
uint32_t * slice_buf_ids
Slice parameter/data buffer IDs.
Definition: vaapi.h:105
struct AVFrame * f
Definition: mpegvideo.h:100
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:204
struct AVCodecContext * avctx
Definition: mpegvideo.h:221
int ff_vaapi_commit_slices(struct vaapi_context *vactx)
Definition: vaapi.c:81
void * ff_vaapi_alloc_iq_matrix(struct vaapi_context *vactx, unsigned int size)
Allocate a new IQ matrix buffer.
Definition: vaapi.c:138
void * priv_data
Definition: avcodec.h:1092
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:143
int ff_vaapi_mpeg_end_frame(AVCodecContext *avctx)
uint32_t pic_param_buf_id
VAPictureParameterBuffer ID.
Definition: vaapi.h:81