FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
vdpau_h264.c
Go to the documentation of this file.
1 /*
2  * MPEG-4 Part 10 / AVC / H.264 HW decode acceleration through VDPAU
3  *
4  * Copyright (c) 2008 NVIDIA
5  * Copyright (c) 2013 RĂ©mi Denis-Courmont
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 Foundation,
21  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 #include <vdpau/vdpau.h>
25 
26 #include "avcodec.h"
27 #include "internal.h"
28 #include "h264dec.h"
29 #include "h264_ps.h"
30 #include "mpegutils.h"
31 #include "vdpau.h"
32 #include "vdpau_internal.h"
33 
34 static int32_t h264_foc(int foc)
35 {
36  if (foc == INT_MAX)
37  foc = 0;
38  return foc;
39 }
40 
41 static void vdpau_h264_clear_rf(VdpReferenceFrameH264 *rf)
42 {
43  rf->surface = VDP_INVALID_HANDLE;
44  rf->is_long_term = VDP_FALSE;
45  rf->top_is_reference = VDP_FALSE;
46  rf->bottom_is_reference = VDP_FALSE;
47  rf->field_order_cnt[0] = 0;
48  rf->field_order_cnt[1] = 0;
49  rf->frame_idx = 0;
50 }
51 
52 static void vdpau_h264_set_rf(VdpReferenceFrameH264 *rf, H264Picture *pic,
53  int pic_structure)
54 {
55  VdpVideoSurface surface = ff_vdpau_get_surface_id(pic->f);
56 
57  if (pic_structure == 0)
58  pic_structure = pic->reference;
59 
60  rf->surface = surface;
61  rf->is_long_term = pic->reference && pic->long_ref;
62  rf->top_is_reference = (pic_structure & PICT_TOP_FIELD) != 0;
63  rf->bottom_is_reference = (pic_structure & PICT_BOTTOM_FIELD) != 0;
64  rf->field_order_cnt[0] = h264_foc(pic->field_poc[0]);
65  rf->field_order_cnt[1] = h264_foc(pic->field_poc[1]);
66  rf->frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;
67 }
68 
70 {
71  H264Context * const h = avctx->priv_data;
73  VdpPictureInfoH264 *info = &pic_ctx->info.h264;
74  int list;
75 
76  VdpReferenceFrameH264 *rf = &info->referenceFrames[0];
77 #define H264_RF_COUNT FF_ARRAY_ELEMS(info->referenceFrames)
78 
79  for (list = 0; list < 2; ++list) {
80  H264Picture **lp = list ? h->long_ref : h->short_ref;
81  int i, ls = list ? 16 : h->short_ref_count;
82 
83  for (i = 0; i < ls; ++i) {
84  H264Picture *pic = lp[i];
85  VdpReferenceFrameH264 *rf2;
86  VdpVideoSurface surface_ref;
87  int pic_frame_idx;
88 
89  if (!pic || !pic->reference)
90  continue;
91  pic_frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;
92  surface_ref = ff_vdpau_get_surface_id(pic->f);
93 
94  rf2 = &info->referenceFrames[0];
95  while (rf2 != rf) {
96  if ((rf2->surface == surface_ref) &&
97  (rf2->is_long_term == pic->long_ref) &&
98  (rf2->frame_idx == pic_frame_idx))
99  break;
100  ++rf2;
101  }
102  if (rf2 != rf) {
103  rf2->top_is_reference |= (pic->reference & PICT_TOP_FIELD) ? VDP_TRUE : VDP_FALSE;
104  rf2->bottom_is_reference |= (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE;
105  continue;
106  }
107 
108  if (rf >= &info->referenceFrames[H264_RF_COUNT])
109  continue;
110 
111  vdpau_h264_set_rf(rf, pic, pic->reference);
112  ++rf;
113  }
114  }
115 
116  for (; rf < &info->referenceFrames[H264_RF_COUNT]; ++rf)
118 }
119 
121  const uint8_t *buffer, uint32_t size)
122 {
123  H264Context * const h = avctx->priv_data;
124  const PPS *pps = h->ps.pps;
125  const SPS *sps = h->ps.sps;
126  H264Picture *pic = h->cur_pic_ptr;
127  struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
128  VdpPictureInfoH264 *info = &pic_ctx->info.h264;
129 #ifdef VDP_DECODER_PROFILE_H264_HIGH_444_PREDICTIVE
130  VdpPictureInfoH264Predictive *info2 = &pic_ctx->info.h264_predictive;
131 #endif
132 
133  /* init VdpPictureInfoH264 */
134  info->slice_count = 0;
135  info->field_order_cnt[0] = h264_foc(pic->field_poc[0]);
136  info->field_order_cnt[1] = h264_foc(pic->field_poc[1]);
137  info->is_reference = h->nal_ref_idc != 0;
138  info->frame_num = h->poc.frame_num;
139  info->field_pic_flag = h->picture_structure != PICT_FRAME;
140  info->bottom_field_flag = h->picture_structure == PICT_BOTTOM_FIELD;
141  info->num_ref_frames = sps->ref_frame_count;
142  info->mb_adaptive_frame_field_flag = sps->mb_aff && !info->field_pic_flag;
143  info->constrained_intra_pred_flag = pps->constrained_intra_pred;
144  info->weighted_pred_flag = pps->weighted_pred;
145  info->weighted_bipred_idc = pps->weighted_bipred_idc;
146  info->frame_mbs_only_flag = sps->frame_mbs_only_flag;
147  info->transform_8x8_mode_flag = pps->transform_8x8_mode;
148  info->chroma_qp_index_offset = pps->chroma_qp_index_offset[0];
149  info->second_chroma_qp_index_offset = pps->chroma_qp_index_offset[1];
150  info->pic_init_qp_minus26 = pps->init_qp - 26;
151  info->num_ref_idx_l0_active_minus1 = pps->ref_count[0] - 1;
152  info->num_ref_idx_l1_active_minus1 = pps->ref_count[1] - 1;
153  info->log2_max_frame_num_minus4 = sps->log2_max_frame_num - 4;
154  info->pic_order_cnt_type = sps->poc_type;
155  info->log2_max_pic_order_cnt_lsb_minus4 = sps->poc_type ? 0 : sps->log2_max_poc_lsb - 4;
156  info->delta_pic_order_always_zero_flag = sps->delta_pic_order_always_zero_flag;
157  info->direct_8x8_inference_flag = sps->direct_8x8_inference_flag;
158 #ifdef VDP_DECODER_PROFILE_H264_HIGH_444_PREDICTIVE
159  info2->qpprime_y_zero_transform_bypass_flag = sps->transform_bypass;
160  info2->separate_colour_plane_flag = sps->residual_color_transform_flag;
161 #endif
162  info->entropy_coding_mode_flag = pps->cabac;
163  info->pic_order_present_flag = pps->pic_order_present;
164  info->deblocking_filter_control_present_flag = pps->deblocking_filter_parameters_present;
165  info->redundant_pic_cnt_present_flag = pps->redundant_pic_cnt_present;
166 
167  memcpy(info->scaling_lists_4x4, pps->scaling_matrix4,
168  sizeof(info->scaling_lists_4x4));
169  memcpy(info->scaling_lists_8x8[0], pps->scaling_matrix8[0],
170  sizeof(info->scaling_lists_8x8[0]));
171  memcpy(info->scaling_lists_8x8[1], pps->scaling_matrix8[3],
172  sizeof(info->scaling_lists_8x8[1]));
173 
175 
176  return ff_vdpau_common_start_frame(pic_ctx, buffer, size);
177 }
178 
179 static const uint8_t start_code_prefix[3] = { 0x00, 0x00, 0x01 };
180 
182  const uint8_t *buffer, uint32_t size)
183 {
184  H264Context *h = avctx->priv_data;
185  H264Picture *pic = h->cur_pic_ptr;
186  struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
187  int val;
188 
189  val = ff_vdpau_add_buffer(pic_ctx, start_code_prefix, 3);
190  if (val)
191  return val;
192 
193  val = ff_vdpau_add_buffer(pic_ctx, buffer, size);
194  if (val)
195  return val;
196 
197  pic_ctx->info.h264.slice_count++;
198  return 0;
199 }
200 
202 {
203  H264Context *h = avctx->priv_data;
204  H264SliceContext *sl = &h->slice_ctx[0];
205  H264Picture *pic = h->cur_pic_ptr;
206  struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
207  int val;
208 
209  val = ff_vdpau_common_end_frame(avctx, pic->f, pic_ctx);
210  if (val < 0)
211  return val;
212 
213  ff_h264_draw_horiz_band(h, sl, 0, h->avctx->height);
214  return 0;
215 }
216 
217 static int vdpau_h264_init(AVCodecContext *avctx)
218 {
219  VdpDecoderProfile profile;
220  uint32_t level = avctx->level;
221 
222  switch (avctx->profile & ~FF_PROFILE_H264_INTRA) {
224  profile = VDP_DECODER_PROFILE_H264_BASELINE;
225  break;
227 #ifdef VDP_DECODER_PROFILE_H264_CONSTRAINED_BASELINE
228  profile = VDP_DECODER_PROFILE_H264_CONSTRAINED_BASELINE;
229  break;
230 #endif
232  profile = VDP_DECODER_PROFILE_H264_MAIN;
233  break;
235  profile = VDP_DECODER_PROFILE_H264_HIGH;
236  break;
237 #ifdef VDP_DECODER_PROFILE_H264_EXTENDED
239  profile = VDP_DECODER_PROFILE_H264_EXTENDED;
240  break;
241 #endif
243  /* XXX: High 10 can be treated as High so long as only 8 bits per
244  * format are supported. */
245  profile = VDP_DECODER_PROFILE_H264_HIGH;
246  break;
247 #ifdef VDP_DECODER_PROFILE_H264_HIGH_444_PREDICTIVE
251  profile = VDP_DECODER_PROFILE_H264_HIGH_444_PREDICTIVE;
252  break;
253 #endif
254  default:
255  return AVERROR(ENOTSUP);
256  }
257 
258  if ((avctx->profile & FF_PROFILE_H264_INTRA) && avctx->level == 11)
259  level = VDP_DECODER_LEVEL_H264_1b;
260 
261  return ff_vdpau_common_init(avctx, profile, level);
262 }
263 
265  .name = "h264_vdpau",
266  .type = AVMEDIA_TYPE_VIDEO,
267  .id = AV_CODEC_ID_H264,
268  .pix_fmt = AV_PIX_FMT_VDPAU,
269  .start_frame = vdpau_h264_start_frame,
270  .end_frame = vdpau_h264_end_frame,
271  .decode_slice = vdpau_h264_decode_slice,
272  .frame_priv_data_size = sizeof(struct vdpau_picture_context),
273  .init = vdpau_h264_init,
274  .uninit = ff_vdpau_common_uninit,
275  .priv_data_size = sizeof(VDPAUContext),
276 };
#define FF_PROFILE_H264_MAIN
Definition: avcodec.h:3205
const char const char void * val
Definition: avisynth_c.h:771
int long_ref
1->long term reference 0->short term reference
Definition: h264dec.h:154
#define FF_PROFILE_H264_CAVLC_444
Definition: avcodec.h:3217
H264POCContext poc
Definition: h264dec.h:462
int weighted_bipred_idc
Definition: h264_ps.h:115
int chroma_qp_index_offset[2]
Definition: h264_ps.h:118
int ff_vdpau_common_start_frame(struct vdpau_picture_context *pic_ctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
Definition: vdpau.c:273
Sequence parameter set.
Definition: h264_ps.h:43
#define FF_PROFILE_H264_INTRA
Definition: avcodec.h:3201
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264_ps.h:113
Picture parameter set.
Definition: h264_ps.h:107
int frame_mbs_only_flag
Definition: h264_ps.h:60
H264Context.
Definition: h264dec.h:341
AVFrame * f
Definition: h264dec.h:129
Public libavcodec VDPAU header.
static void vdpau_h264_clear_rf(VdpReferenceFrameH264 *rf)
Definition: vdpau_h264.c:41
H264Picture * long_ref[32]
Definition: h264dec.h:466
int profile
profile
Definition: avcodec.h:3164
int picture_structure
Definition: h264dec.h:412
AVHWAccel ff_h264_vdpau_hwaccel
Definition: vdpau_h264.c:264
#define FF_PROFILE_H264_HIGH_444_PREDICTIVE
Definition: avcodec.h:3215
uint8_t scaling_matrix4[6][16]
Definition: h264_ps.h:123
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264_ps.h:119
#define FF_PROFILE_H264_BASELINE
Definition: avcodec.h:3203
const PPS * pps
Definition: h264_ps.h:143
int ff_vdpau_common_uninit(AVCodecContext *avctx)
Definition: vdpau.c:235
uint8_t
VdpPictureInfoH264 h264
int cabac
entropy_coding_mode_flag
Definition: h264_ps.h:109
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:38
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264_ps.h:48
static int vdpau_h264_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
Definition: vdpau_h264.c:120
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264_ps.h:121
#define FF_PROFILE_H264_EXTENDED
Definition: avcodec.h:3206
ptrdiff_t size
Definition: opengl_enc.c:101
static void vdpau_h264_set_rf(VdpReferenceFrameH264 *rf, H264Picture *pic, int pic_structure)
Definition: vdpau_h264.c:52
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height)
Definition: h264dec.c:104
static int32_t h264_foc(int foc)
Definition: vdpau_h264.c:34
H.264 parameter set handling.
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264_ps.h:61
int ff_vdpau_common_init(AVCodecContext *avctx, VdpDecoderProfile profile, int level)
Definition: vdpau.c:122
int poc_type
pic_order_cnt_type
Definition: h264_ps.h:50
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264_ps.h:120
#define AVERROR(e)
Definition: error.h:43
void * hwaccel_picture_private
hardware accelerator private data
Definition: h264dec.h:142
#define FF_PROFILE_H264_HIGH_422
Definition: avcodec.h:3211
#define FF_PROFILE_H264_HIGH
Definition: avcodec.h:3207
int weighted_pred
weighted_pred_flag
Definition: h264_ps.h:114
#define PICT_TOP_FIELD
Definition: mpegutils.h:37
int frame_num
frame_num (raw frame_num from slice header)
Definition: h264dec.h:149
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264_ps.h:98
int delta_pic_order_always_zero_flag
Definition: h264_ps.h:52
uint8_t scaling_matrix8[6][64]
Definition: h264_ps.h:124
int ref_frame_count
num_ref_frames
Definition: h264_ps.h:56
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:3699
int reference
Definition: h264dec.h:160
int32_t
static int vdpau_h264_end_frame(AVCodecContext *avctx)
Definition: vdpau_h264.c:201
static int vdpau_h264_init(AVCodecContext *avctx)
Definition: vdpau_h264.c:217
int level
level
Definition: avcodec.h:3262
static void vdpau_h264_set_reference_frames(AVCodecContext *avctx)
Definition: vdpau_h264.c:69
int init_qp
pic_init_qp_minus26 + 26
Definition: h264_ps.h:116
H.264 / AVC / MPEG-4 part10 codec.
H264SliceContext * slice_ctx
Definition: h264dec.h:354
int direct_8x8_inference_flag
Definition: h264_ps.h:62
int pic_order_present
pic_order_present_flag
Definition: h264_ps.h:110
AVCodecContext * avctx
Definition: h264dec.h:343
Libavcodec external API header.
static const uint8_t start_code_prefix[3]
Definition: vdpau_h264.c:179
H264Picture * short_ref[32]
Definition: h264dec.h:465
int field_poc[2]
top/bottom POC
Definition: h264dec.h:147
main external API structure.
Definition: avcodec.h:1659
#define H264_RF_COUNT
HW acceleration through VDPAU, Picture.data[3] contains a VdpVideoSurface.
Definition: pixfmt.h:208
H264Picture * cur_pic_ptr
Definition: h264dec.h:350
const SPS * sps
Definition: h264_ps.h:144
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264_ps.h:51
mfxU16 profile
Definition: qsvenc.c:42
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264_ps.h:122
uint8_t level
Definition: svq3.c:206
int pic_id
pic_num (short -> no wrap version of pic_num, pic_num & max_pic_num; long -> long_pic_num) ...
Definition: h264dec.h:152
common internal api header.
int ff_vdpau_add_buffer(struct vdpau_picture_context *pic_ctx, const uint8_t *buf, uint32_t size)
Definition: vdpau.c:346
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264_ps.h:49
H264ParamSets ps
Definition: h264dec.h:458
int ff_vdpau_common_end_frame(AVCodecContext *avctx, AVFrame *frame, struct vdpau_picture_context *pic_ctx)
Definition: vdpau.c:283
static int vdpau_h264_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
Definition: vdpau_h264.c:181
void * priv_data
Definition: avcodec.h:1701
#define PICT_FRAME
Definition: mpegutils.h:39
union VDPAUPictureInfo info
VDPAU picture information.
#define FF_PROFILE_H264_CONSTRAINED_BASELINE
Definition: avcodec.h:3204
#define FF_PROFILE_H264_HIGH_10
Definition: avcodec.h:3208
int nal_ref_idc
Definition: h264dec.h:446
GLuint buffer
Definition: opengl_enc.c:102
static uintptr_t ff_vdpau_get_surface_id(AVFrame *pic)
Extract VdpVideoSurface from an AVFrame.
int short_ref_count
number of actual short term references
Definition: h264dec.h:481