FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/vdpau_h264.c
Date: 2022-07-05 19:52:29
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 "h264dec.h"
28 #include "h264_ps.h"
29 #include "hwconfig.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
69 static void vdpau_h264_set_reference_frames(AVCodecContext *avctx)
70 {
71 H264Context * const h = avctx->priv_data;
72 struct vdpau_picture_context *pic_ctx = h->cur_pic_ptr->hwaccel_picture_private;
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)
117 vdpau_h264_clear_rf(rf);
118 }
119
120 static int vdpau_h264_start_frame(AVCodecContext *avctx,
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
174 vdpau_h264_set_reference_frames(avctx);
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
181 static int vdpau_h264_decode_slice(AVCodecContext *avctx,
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
201 static int vdpau_h264_end_frame(AVCodecContext *avctx)
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) {
223 case FF_PROFILE_H264_BASELINE:
224 profile = VDP_DECODER_PROFILE_H264_BASELINE;
225 break;
226 case FF_PROFILE_H264_CONSTRAINED_BASELINE:
227 #ifdef VDP_DECODER_PROFILE_H264_CONSTRAINED_BASELINE
228 profile = VDP_DECODER_PROFILE_H264_CONSTRAINED_BASELINE;
229 break;
230 #endif
231 case FF_PROFILE_H264_MAIN:
232 profile = VDP_DECODER_PROFILE_H264_MAIN;
233 break;
234 case FF_PROFILE_H264_HIGH:
235 profile = VDP_DECODER_PROFILE_H264_HIGH;
236 break;
237 #ifdef VDP_DECODER_PROFILE_H264_EXTENDED
238 case FF_PROFILE_H264_EXTENDED:
239 profile = VDP_DECODER_PROFILE_H264_EXTENDED;
240 break;
241 #endif
242 case FF_PROFILE_H264_HIGH_10:
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
248 case FF_PROFILE_H264_HIGH_422:
249 case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
250 case FF_PROFILE_H264_CAVLC_444:
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
264 const AVHWAccel ff_h264_vdpau_hwaccel = {
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 .frame_params = ff_vdpau_common_frame_params,
276 .priv_data_size = sizeof(VDPAUContext),
277 .caps_internal = HWACCEL_CAP_ASYNC_SAFE,
278 };
279