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vdpau_h264.c
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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 "h264.h"
29 #include "mpegutils.h"
30 #include "vdpau.h"
31 #include "vdpau_internal.h"
32 
33 static int32_t h264_foc(int foc)
34 {
35  if (foc == INT_MAX)
36  foc = 0;
37  return foc;
38 }
39 
40 static void vdpau_h264_clear_rf(VdpReferenceFrameH264 *rf)
41 {
42  rf->surface = VDP_INVALID_HANDLE;
43  rf->is_long_term = VDP_FALSE;
44  rf->top_is_reference = VDP_FALSE;
45  rf->bottom_is_reference = VDP_FALSE;
46  rf->field_order_cnt[0] = 0;
47  rf->field_order_cnt[1] = 0;
48  rf->frame_idx = 0;
49 }
50 
51 static void vdpau_h264_set_rf(VdpReferenceFrameH264 *rf, H264Picture *pic,
52  int pic_structure)
53 {
54  VdpVideoSurface surface = ff_vdpau_get_surface_id(&pic->f);
55 
56  if (pic_structure == 0)
57  pic_structure = pic->reference;
58 
59  rf->surface = surface;
60  rf->is_long_term = pic->reference && pic->long_ref;
61  rf->top_is_reference = (pic_structure & PICT_TOP_FIELD) != 0;
62  rf->bottom_is_reference = (pic_structure & PICT_BOTTOM_FIELD) != 0;
63  rf->field_order_cnt[0] = h264_foc(pic->field_poc[0]);
64  rf->field_order_cnt[1] = h264_foc(pic->field_poc[1]);
65  rf->frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;
66 }
67 
69 {
70  H264Context * const h = avctx->priv_data;
71  struct vdpau_picture_context *pic_ctx = h->cur_pic_ptr->hwaccel_picture_private;
72  VdpPictureInfoH264 *info = &pic_ctx->info.h264;
73  int list;
74 
75  VdpReferenceFrameH264 *rf = &info->referenceFrames[0];
76 #define H264_RF_COUNT FF_ARRAY_ELEMS(info->referenceFrames)
77 
78  for (list = 0; list < 2; ++list) {
79  H264Picture **lp = list ? h->long_ref : h->short_ref;
80  int i, ls = list ? 16 : h->short_ref_count;
81 
82  for (i = 0; i < ls; ++i) {
83  H264Picture *pic = lp[i];
84  VdpReferenceFrameH264 *rf2;
85  VdpVideoSurface surface_ref;
86  int pic_frame_idx;
87 
88  if (!pic || !pic->reference)
89  continue;
90  pic_frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;
91  surface_ref = ff_vdpau_get_surface_id(&pic->f);
92 
93  rf2 = &info->referenceFrames[0];
94  while (rf2 != rf) {
95  if ((rf2->surface == surface_ref) &&
96  (rf2->is_long_term == pic->long_ref) &&
97  (rf2->frame_idx == pic_frame_idx))
98  break;
99  ++rf2;
100  }
101  if (rf2 != rf) {
102  rf2->top_is_reference |= (pic->reference & PICT_TOP_FIELD) ? VDP_TRUE : VDP_FALSE;
103  rf2->bottom_is_reference |= (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE;
104  continue;
105  }
106 
107  if (rf >= &info->referenceFrames[H264_RF_COUNT])
108  continue;
109 
110  vdpau_h264_set_rf(rf, pic, pic->reference);
111  ++rf;
112  }
113  }
114 
115  for (; rf < &info->referenceFrames[H264_RF_COUNT]; ++rf)
117 }
118 
120  const uint8_t *buffer, uint32_t size)
121 {
122  H264Context * const h = avctx->priv_data;
123  H264Picture *pic = h->cur_pic_ptr;
124  struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
125  VdpPictureInfoH264 *info = &pic_ctx->info.h264;
126 
127  /* init VdpPictureInfoH264 */
128  info->slice_count = 0;
129  info->field_order_cnt[0] = h264_foc(pic->field_poc[0]);
130  info->field_order_cnt[1] = h264_foc(pic->field_poc[1]);
131  info->is_reference = h->nal_ref_idc != 0;
132  info->frame_num = h->frame_num;
133  info->field_pic_flag = h->picture_structure != PICT_FRAME;
134  info->bottom_field_flag = h->picture_structure == PICT_BOTTOM_FIELD;
135  info->num_ref_frames = h->sps.ref_frame_count;
136  info->mb_adaptive_frame_field_flag = h->sps.mb_aff && !info->field_pic_flag;
137  info->constrained_intra_pred_flag = h->pps.constrained_intra_pred;
138  info->weighted_pred_flag = h->pps.weighted_pred;
139  info->weighted_bipred_idc = h->pps.weighted_bipred_idc;
140  info->frame_mbs_only_flag = h->sps.frame_mbs_only_flag;
141  info->transform_8x8_mode_flag = h->pps.transform_8x8_mode;
142  info->chroma_qp_index_offset = h->pps.chroma_qp_index_offset[0];
143  info->second_chroma_qp_index_offset = h->pps.chroma_qp_index_offset[1];
144  info->pic_init_qp_minus26 = h->pps.init_qp - 26;
145  info->num_ref_idx_l0_active_minus1 = h->pps.ref_count[0] - 1;
146  info->num_ref_idx_l1_active_minus1 = h->pps.ref_count[1] - 1;
147  info->log2_max_frame_num_minus4 = h->sps.log2_max_frame_num - 4;
148  info->pic_order_cnt_type = h->sps.poc_type;
149  info->log2_max_pic_order_cnt_lsb_minus4 = h->sps.poc_type ? 0 : h->sps.log2_max_poc_lsb - 4;
150  info->delta_pic_order_always_zero_flag = h->sps.delta_pic_order_always_zero_flag;
151  info->direct_8x8_inference_flag = h->sps.direct_8x8_inference_flag;
152  info->entropy_coding_mode_flag = h->pps.cabac;
153  info->pic_order_present_flag = h->pps.pic_order_present;
154  info->deblocking_filter_control_present_flag = h->pps.deblocking_filter_parameters_present;
155  info->redundant_pic_cnt_present_flag = h->pps.redundant_pic_cnt_present;
156 
157  memcpy(info->scaling_lists_4x4, h->pps.scaling_matrix4,
158  sizeof(info->scaling_lists_4x4));
159  memcpy(info->scaling_lists_8x8[0], h->pps.scaling_matrix8[0],
160  sizeof(info->scaling_lists_8x8[0]));
161  memcpy(info->scaling_lists_8x8[1], h->pps.scaling_matrix8[3],
162  sizeof(info->scaling_lists_8x8[1]));
163 
165 
166  return ff_vdpau_common_start_frame(pic_ctx, buffer, size);
167 }
168 
169 static const uint8_t start_code_prefix[3] = { 0x00, 0x00, 0x01 };
170 
172  const uint8_t *buffer, uint32_t size)
173 {
174  H264Context *h = avctx->priv_data;
175  H264Picture *pic = h->cur_pic_ptr;
176  struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
177  int val;
178 
179  val = ff_vdpau_add_buffer(pic_ctx, start_code_prefix, 3);
180  if (val)
181  return val;
182 
183  val = ff_vdpau_add_buffer(pic_ctx, buffer, size);
184  if (val)
185  return val;
186 
187  pic_ctx->info.h264.slice_count++;
188  return 0;
189 }
190 
192 {
193  H264Context *h = avctx->priv_data;
194  H264Picture *pic = h->cur_pic_ptr;
195  struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
196  int val;
197 
198  val = ff_vdpau_common_end_frame(avctx, &pic->f, pic_ctx);
199  if (val < 0)
200  return val;
201 
203  return 0;
204 }
205 
206 static int vdpau_h264_init(AVCodecContext *avctx)
207 {
208  VdpDecoderProfile profile;
209  uint32_t level = avctx->level;
210 
211  switch (avctx->profile & ~FF_PROFILE_H264_INTRA) {
213  profile = VDP_DECODER_PROFILE_H264_BASELINE;
214  break;
216 #ifdef VDP_DECODER_PROFILE_H264_CONSTRAINED_BASELINE
217  profile = VDP_DECODER_PROFILE_H264_CONSTRAINED_BASELINE;
218  break;
219 #endif
221  profile = VDP_DECODER_PROFILE_H264_MAIN;
222  break;
224  profile = VDP_DECODER_PROFILE_H264_HIGH;
225  break;
226 #ifdef VDP_DECODER_PROFILE_H264_EXTENDED
228  profile = VDP_DECODER_PROFILE_H264_EXTENDED;
229  break;
230 #endif
231  default:
232  return AVERROR(ENOTSUP);
233  }
234 
235  if ((avctx->profile & FF_PROFILE_H264_INTRA) && avctx->level == 11)
236  level = VDP_DECODER_LEVEL_H264_1b;
237 
238  return ff_vdpau_common_init(avctx, profile, level);
239 }
240 
242  .name = "h264_vdpau",
243  .type = AVMEDIA_TYPE_VIDEO,
244  .id = AV_CODEC_ID_H264,
245  .pix_fmt = AV_PIX_FMT_VDPAU,
246  .start_frame = vdpau_h264_start_frame,
247  .end_frame = vdpau_h264_end_frame,
248  .decode_slice = vdpau_h264_decode_slice,
249  .frame_priv_data_size = sizeof(struct vdpau_picture_context),
250  .init = vdpau_h264_init,
251  .uninit = ff_vdpau_common_uninit,
252  .priv_data_size = sizeof(VDPAUContext),
253 };