FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/vdpau_h264.c
Date: 2021-09-24 03:35:22
Exec Total Coverage
Lines: 0 148 0.0%
Branches: 0 62 0.0%

Line Branch Exec Source
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 "hwconfig.h"
31 #include "mpegutils.h"
32 #include "vdpau.h"
33 #include "vdpau_internal.h"
34
35 static int32_t h264_foc(int foc)
36 {
37 if (foc == INT_MAX)
38 foc = 0;
39 return foc;
40 }
41
42 static void vdpau_h264_clear_rf(VdpReferenceFrameH264 *rf)
43 {
44 rf->surface = VDP_INVALID_HANDLE;
45 rf->is_long_term = VDP_FALSE;
46 rf->top_is_reference = VDP_FALSE;
47 rf->bottom_is_reference = VDP_FALSE;
48 rf->field_order_cnt[0] = 0;
49 rf->field_order_cnt[1] = 0;
50 rf->frame_idx = 0;
51 }
52
53 static void vdpau_h264_set_rf(VdpReferenceFrameH264 *rf, H264Picture *pic,
54 int pic_structure)
55 {
56 VdpVideoSurface surface = ff_vdpau_get_surface_id(pic->f);
57
58 if (pic_structure == 0)
59 pic_structure = pic->reference;
60
61 rf->surface = surface;
62 rf->is_long_term = pic->reference && pic->long_ref;
63 rf->top_is_reference = (pic_structure & PICT_TOP_FIELD) != 0;
64 rf->bottom_is_reference = (pic_structure & PICT_BOTTOM_FIELD) != 0;
65 rf->field_order_cnt[0] = h264_foc(pic->field_poc[0]);
66 rf->field_order_cnt[1] = h264_foc(pic->field_poc[1]);
67 rf->frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;
68 }
69
70 static void vdpau_h264_set_reference_frames(AVCodecContext *avctx)
71 {
72 H264Context * const h = avctx->priv_data;
73 struct vdpau_picture_context *pic_ctx = h->cur_pic_ptr->hwaccel_picture_private;
74 VdpPictureInfoH264 *info = &pic_ctx->info.h264;
75 int list;
76
77 VdpReferenceFrameH264 *rf = &info->referenceFrames[0];
78 #define H264_RF_COUNT FF_ARRAY_ELEMS(info->referenceFrames)
79
80 for (list = 0; list < 2; ++list) {
81 H264Picture **lp = list ? h->long_ref : h->short_ref;
82 int i, ls = list ? 16 : h->short_ref_count;
83
84 for (i = 0; i < ls; ++i) {
85 H264Picture *pic = lp[i];
86 VdpReferenceFrameH264 *rf2;
87 VdpVideoSurface surface_ref;
88 int pic_frame_idx;
89
90 if (!pic || !pic->reference)
91 continue;
92 pic_frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;
93 surface_ref = ff_vdpau_get_surface_id(pic->f);
94
95 rf2 = &info->referenceFrames[0];
96 while (rf2 != rf) {
97 if ((rf2->surface == surface_ref) &&
98 (rf2->is_long_term == pic->long_ref) &&
99 (rf2->frame_idx == pic_frame_idx))
100 break;
101 ++rf2;
102 }
103 if (rf2 != rf) {
104 rf2->top_is_reference |= (pic->reference & PICT_TOP_FIELD) ? VDP_TRUE : VDP_FALSE;
105 rf2->bottom_is_reference |= (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE;
106 continue;
107 }
108
109 if (rf >= &info->referenceFrames[H264_RF_COUNT])
110 continue;
111
112 vdpau_h264_set_rf(rf, pic, pic->reference);
113 ++rf;
114 }
115 }
116
117 for (; rf < &info->referenceFrames[H264_RF_COUNT]; ++rf)
118 vdpau_h264_clear_rf(rf);
119 }
120
121 static int vdpau_h264_start_frame(AVCodecContext *avctx,
122 const uint8_t *buffer, uint32_t size)
123 {
124 H264Context * const h = avctx->priv_data;
125 const PPS *pps = h->ps.pps;
126 const SPS *sps = h->ps.sps;
127 H264Picture *pic = h->cur_pic_ptr;
128 struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
129 VdpPictureInfoH264 *info = &pic_ctx->info.h264;
130 #ifdef VDP_DECODER_PROFILE_H264_HIGH_444_PREDICTIVE
131 VdpPictureInfoH264Predictive *info2 = &pic_ctx->info.h264_predictive;
132 #endif
133
134 /* init VdpPictureInfoH264 */
135 info->slice_count = 0;
136 info->field_order_cnt[0] = h264_foc(pic->field_poc[0]);
137 info->field_order_cnt[1] = h264_foc(pic->field_poc[1]);
138 info->is_reference = h->nal_ref_idc != 0;
139 info->frame_num = h->poc.frame_num;
140 info->field_pic_flag = h->picture_structure != PICT_FRAME;
141 info->bottom_field_flag = h->picture_structure == PICT_BOTTOM_FIELD;
142 info->num_ref_frames = sps->ref_frame_count;
143 info->mb_adaptive_frame_field_flag = sps->mb_aff && !info->field_pic_flag;
144 info->constrained_intra_pred_flag = pps->constrained_intra_pred;
145 info->weighted_pred_flag = pps->weighted_pred;
146 info->weighted_bipred_idc = pps->weighted_bipred_idc;
147 info->frame_mbs_only_flag = sps->frame_mbs_only_flag;
148 info->transform_8x8_mode_flag = pps->transform_8x8_mode;
149 info->chroma_qp_index_offset = pps->chroma_qp_index_offset[0];
150 info->second_chroma_qp_index_offset = pps->chroma_qp_index_offset[1];
151 info->pic_init_qp_minus26 = pps->init_qp - 26;
152 info->num_ref_idx_l0_active_minus1 = pps->ref_count[0] - 1;
153 info->num_ref_idx_l1_active_minus1 = pps->ref_count[1] - 1;
154 info->log2_max_frame_num_minus4 = sps->log2_max_frame_num - 4;
155 info->pic_order_cnt_type = sps->poc_type;
156 info->log2_max_pic_order_cnt_lsb_minus4 = sps->poc_type ? 0 : sps->log2_max_poc_lsb - 4;
157 info->delta_pic_order_always_zero_flag = sps->delta_pic_order_always_zero_flag;
158 info->direct_8x8_inference_flag = sps->direct_8x8_inference_flag;
159 #ifdef VDP_DECODER_PROFILE_H264_HIGH_444_PREDICTIVE
160 info2->qpprime_y_zero_transform_bypass_flag = sps->transform_bypass;
161 info2->separate_colour_plane_flag = sps->residual_color_transform_flag;
162 #endif
163 info->entropy_coding_mode_flag = pps->cabac;
164 info->pic_order_present_flag = pps->pic_order_present;
165 info->deblocking_filter_control_present_flag = pps->deblocking_filter_parameters_present;
166 info->redundant_pic_cnt_present_flag = pps->redundant_pic_cnt_present;
167
168 memcpy(info->scaling_lists_4x4, pps->scaling_matrix4,
169 sizeof(info->scaling_lists_4x4));
170 memcpy(info->scaling_lists_8x8[0], pps->scaling_matrix8[0],
171 sizeof(info->scaling_lists_8x8[0]));
172 memcpy(info->scaling_lists_8x8[1], pps->scaling_matrix8[3],
173 sizeof(info->scaling_lists_8x8[1]));
174
175 vdpau_h264_set_reference_frames(avctx);
176
177 return ff_vdpau_common_start_frame(pic_ctx, buffer, size);
178 }
179
180 static const uint8_t start_code_prefix[3] = { 0x00, 0x00, 0x01 };
181
182 static int vdpau_h264_decode_slice(AVCodecContext *avctx,
183 const uint8_t *buffer, uint32_t size)
184 {
185 H264Context *h = avctx->priv_data;
186 H264Picture *pic = h->cur_pic_ptr;
187 struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
188 int val;
189
190 val = ff_vdpau_add_buffer(pic_ctx, start_code_prefix, 3);
191 if (val)
192 return val;
193
194 val = ff_vdpau_add_buffer(pic_ctx, buffer, size);
195 if (val)
196 return val;
197
198 pic_ctx->info.h264.slice_count++;
199 return 0;
200 }
201
202 static int vdpau_h264_end_frame(AVCodecContext *avctx)
203 {
204 H264Context *h = avctx->priv_data;
205 H264SliceContext *sl = &h->slice_ctx[0];
206 H264Picture *pic = h->cur_pic_ptr;
207 struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
208 int val;
209
210 val = ff_vdpau_common_end_frame(avctx, pic->f, pic_ctx);
211 if (val < 0)
212 return val;
213
214 ff_h264_draw_horiz_band(h, sl, 0, h->avctx->height);
215 return 0;
216 }
217
218 static int vdpau_h264_init(AVCodecContext *avctx)
219 {
220 VdpDecoderProfile profile;
221 uint32_t level = avctx->level;
222
223 switch (avctx->profile & ~FF_PROFILE_H264_INTRA) {
224 case FF_PROFILE_H264_BASELINE:
225 profile = VDP_DECODER_PROFILE_H264_BASELINE;
226 break;
227 case FF_PROFILE_H264_CONSTRAINED_BASELINE:
228 #ifdef VDP_DECODER_PROFILE_H264_CONSTRAINED_BASELINE
229 profile = VDP_DECODER_PROFILE_H264_CONSTRAINED_BASELINE;
230 break;
231 #endif
232 case FF_PROFILE_H264_MAIN:
233 profile = VDP_DECODER_PROFILE_H264_MAIN;
234 break;
235 case FF_PROFILE_H264_HIGH:
236 profile = VDP_DECODER_PROFILE_H264_HIGH;
237 break;
238 #ifdef VDP_DECODER_PROFILE_H264_EXTENDED
239 case FF_PROFILE_H264_EXTENDED:
240 profile = VDP_DECODER_PROFILE_H264_EXTENDED;
241 break;
242 #endif
243 case FF_PROFILE_H264_HIGH_10:
244 /* XXX: High 10 can be treated as High so long as only 8 bits per
245 * format are supported. */
246 profile = VDP_DECODER_PROFILE_H264_HIGH;
247 break;
248 #ifdef VDP_DECODER_PROFILE_H264_HIGH_444_PREDICTIVE
249 case FF_PROFILE_H264_HIGH_422:
250 case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
251 case FF_PROFILE_H264_CAVLC_444:
252 profile = VDP_DECODER_PROFILE_H264_HIGH_444_PREDICTIVE;
253 break;
254 #endif
255 default:
256 return AVERROR(ENOTSUP);
257 }
258
259 if ((avctx->profile & FF_PROFILE_H264_INTRA) && avctx->level == 11)
260 level = VDP_DECODER_LEVEL_H264_1b;
261
262 return ff_vdpau_common_init(avctx, profile, level);
263 }
264
265 const AVHWAccel ff_h264_vdpau_hwaccel = {
266 .name = "h264_vdpau",
267 .type = AVMEDIA_TYPE_VIDEO,
268 .id = AV_CODEC_ID_H264,
269 .pix_fmt = AV_PIX_FMT_VDPAU,
270 .start_frame = vdpau_h264_start_frame,
271 .end_frame = vdpau_h264_end_frame,
272 .decode_slice = vdpau_h264_decode_slice,
273 .frame_priv_data_size = sizeof(struct vdpau_picture_context),
274 .init = vdpau_h264_init,
275 .uninit = ff_vdpau_common_uninit,
276 .frame_params = ff_vdpau_common_frame_params,
277 .priv_data_size = sizeof(VDPAUContext),
278 .caps_internal = HWACCEL_CAP_ASYNC_SAFE,
279 };
280