b5b91cb2f323505508a0543f80ee13aba03a03c4
[ffmpeg.git] / libavcodec / vdpauvideo.c
1 /*
2  * Video Decode and Presentation API for UNIX (VDPAU) is used for
3  * HW decode acceleration for MPEG-1/2, H.264 and VC-1.
4  *
5  * Copyright (c) 2008 NVIDIA.
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
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23
24 #include <limits.h>
25 #include "avcodec.h"
26 #include "h264.h"
27
28 #undef NDEBUG
29 #include <assert.h>
30
31 #include "vdpau.h"
32 #include "vdpau_internal.h"
33
34 /**
35  * \addtogroup VDPAU_Decoding
36  *
37  * @{
38  */
39
40 void ff_vdpau_h264_set_reference_frames(MpegEncContext *s)
41 {
42     H264Context *h = s->avctx->priv_data;
43     struct vdpau_render_state * render, * render_ref;
44     VdpReferenceFrameH264 * rf, * rf2;
45     Picture * pic;
46     int i, list, pic_frame_idx;
47
48     render = (struct vdpau_render_state*)s->current_picture_ptr->data[0];
49     assert(render);
50
51     rf = &render->info.h264.referenceFrames[0];
52 #define H264_RF_COUNT FF_ARRAY_ELEMS(render->info.h264.referenceFrames)
53
54     for (list = 0; list < 2; ++list) {
55         Picture **lp = list ? h->long_ref : h->short_ref;
56         int ls = list ? h->long_ref_count : h->short_ref_count;
57
58         for (i = 0; i < ls; ++i) {
59             pic = lp[i];
60             if (!pic || !pic->reference)
61                 continue;
62             pic_frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;
63
64             render_ref = (struct vdpau_render_state*)pic->data[0];
65             assert(render_ref);
66
67             rf2 = &render->info.h264.referenceFrames[0];
68             while (rf2 != rf) {
69                 if (
70                     (rf2->surface == render_ref->surface)
71                     && (rf2->is_long_term == pic->long_ref)
72                     && (rf2->frame_idx == pic_frame_idx)
73                 )
74                     break;
75                 ++rf2;
76             }
77             if (rf2 != rf) {
78                 rf2->top_is_reference    |= (pic->reference & PICT_TOP_FIELD)    ? VDP_TRUE : VDP_FALSE;
79                 rf2->bottom_is_reference |= (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE;
80                 continue;
81             }
82
83             if (rf >= &render->info.h264.referenceFrames[H264_RF_COUNT])
84                 continue;
85
86             rf->surface             = render_ref->surface;
87             rf->is_long_term        = pic->long_ref;
88             rf->top_is_reference    = (pic->reference & PICT_TOP_FIELD)    ? VDP_TRUE : VDP_FALSE;
89             rf->bottom_is_reference = (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE;
90             rf->field_order_cnt[0]  = pic->field_poc[0];
91             rf->field_order_cnt[1]  = pic->field_poc[1];
92             rf->frame_idx           = pic_frame_idx;
93
94             ++rf;
95         }
96     }
97
98     for (; rf < &render->info.h264.referenceFrames[H264_RF_COUNT]; ++rf) {
99         rf->surface             = VDP_INVALID_HANDLE;
100         rf->is_long_term        = 0;
101         rf->top_is_reference    = 0;
102         rf->bottom_is_reference = 0;
103         rf->field_order_cnt[0]  = 0;
104         rf->field_order_cnt[1]  = 0;
105         rf->frame_idx           = 0;
106     }
107 }
108
109 void ff_vdpau_add_data_chunk(MpegEncContext *s,
110                              const uint8_t *buf, int buf_size)
111 {
112     struct vdpau_render_state * render;
113
114     render = (struct vdpau_render_state*)s->current_picture_ptr->data[0];
115     assert(render);
116
117     render->bitstream_buffers= av_fast_realloc(
118         render->bitstream_buffers,
119         &render->bitstream_buffers_allocated,
120         sizeof(*render->bitstream_buffers)*(render->bitstream_buffers_used + 1)
121     );
122
123     render->bitstream_buffers[render->bitstream_buffers_used].struct_version  = VDP_BITSTREAM_BUFFER_VERSION;
124     render->bitstream_buffers[render->bitstream_buffers_used].bitstream       = buf;
125     render->bitstream_buffers[render->bitstream_buffers_used].bitstream_bytes = buf_size;
126     render->bitstream_buffers_used++;
127 }
128
129 void ff_vdpau_h264_picture_complete(MpegEncContext *s)
130 {
131     H264Context *h = s->avctx->priv_data;
132     struct vdpau_render_state * render;
133
134     render = (struct vdpau_render_state*)s->current_picture_ptr->data[0];
135     assert(render);
136
137     render->info.h264.slice_count = h->slice_num;
138     if (render->info.h264.slice_count < 1)
139         return;
140
141     for (int i = 0; i < 2; ++i) {
142         int foc = s->current_picture_ptr->field_poc[i];
143         if (foc == INT_MAX)
144             foc = 0;
145         render->info.h264.field_order_cnt[i] = foc;
146     }
147
148     render->info.h264.is_reference                           = s->current_picture_ptr->reference ? VDP_TRUE : VDP_FALSE;
149     render->info.h264.frame_num                              = h->frame_num;
150     render->info.h264.field_pic_flag                         = s->picture_structure != PICT_FRAME;
151     render->info.h264.bottom_field_flag                      = s->picture_structure == PICT_BOTTOM_FIELD;
152     render->info.h264.num_ref_frames                         = h->sps.ref_frame_count;
153     render->info.h264.mb_adaptive_frame_field_flag           = h->sps.mb_aff;
154     render->info.h264.constrained_intra_pred_flag            = h->pps.constrained_intra_pred;
155     render->info.h264.weighted_pred_flag                     = h->pps.weighted_pred;
156     render->info.h264.weighted_bipred_idc                    = h->pps.weighted_bipred_idc;
157     render->info.h264.frame_mbs_only_flag                    = h->sps.frame_mbs_only_flag;
158     render->info.h264.transform_8x8_mode_flag                = h->pps.transform_8x8_mode;
159     render->info.h264.chroma_qp_index_offset                 = h->pps.chroma_qp_index_offset[0];
160     render->info.h264.second_chroma_qp_index_offset          = h->pps.chroma_qp_index_offset[1];
161     render->info.h264.pic_init_qp_minus26                    = h->pps.init_qp - 26;
162     render->info.h264.num_ref_idx_l0_active_minus1           = h->pps.ref_count[0] - 1;
163     render->info.h264.num_ref_idx_l1_active_minus1           = h->pps.ref_count[1] - 1;
164     render->info.h264.log2_max_frame_num_minus4              = h->sps.log2_max_frame_num - 4;
165     render->info.h264.pic_order_cnt_type                     = h->sps.poc_type;
166     render->info.h264.log2_max_pic_order_cnt_lsb_minus4      = h->sps.log2_max_poc_lsb - 4;
167     render->info.h264.delta_pic_order_always_zero_flag       = h->sps.delta_pic_order_always_zero_flag;
168     render->info.h264.direct_8x8_inference_flag              = h->sps.direct_8x8_inference_flag;
169     render->info.h264.entropy_coding_mode_flag               = h->pps.cabac;
170     render->info.h264.pic_order_present_flag                 = h->pps.pic_order_present;
171     render->info.h264.deblocking_filter_control_present_flag = h->pps.deblocking_filter_parameters_present;
172     render->info.h264.redundant_pic_cnt_present_flag         = h->pps.redundant_pic_cnt_present;
173     memcpy(render->info.h264.scaling_lists_4x4, h->pps.scaling_matrix4, sizeof(render->info.h264.scaling_lists_4x4));
174     memcpy(render->info.h264.scaling_lists_8x8, h->pps.scaling_matrix8, sizeof(render->info.h264.scaling_lists_8x8));
175
176     ff_draw_horiz_band(s, 0, s->avctx->height);
177     render->bitstream_buffers_used = 0;
178 }
179
180 void ff_vdpau_mpeg_picture_complete(MpegEncContext *s, const uint8_t *buf,
181                                     int buf_size, int slice_count)
182 {
183     struct vdpau_render_state * render, * last, * next;
184     int i;
185
186     render = (struct vdpau_render_state*)s->current_picture_ptr->data[0];
187     assert(render);
188
189     /* fill VdpPictureInfoMPEG1Or2 struct */
190     render->info.mpeg.picture_structure          = s->picture_structure;
191     render->info.mpeg.picture_coding_type        = s->pict_type;
192     render->info.mpeg.intra_dc_precision         = s->intra_dc_precision;
193     render->info.mpeg.frame_pred_frame_dct       = s->frame_pred_frame_dct;
194     render->info.mpeg.concealment_motion_vectors = s->concealment_motion_vectors;
195     render->info.mpeg.intra_vlc_format           = s->intra_vlc_format;
196     render->info.mpeg.alternate_scan             = s->alternate_scan;
197     render->info.mpeg.q_scale_type               = s->q_scale_type;
198     render->info.mpeg.top_field_first            = s->top_field_first;
199     render->info.mpeg.full_pel_forward_vector    = s->full_pel[0]; // MPEG-1 only.  Set 0 for MPEG-2
200     render->info.mpeg.full_pel_backward_vector   = s->full_pel[1]; // MPEG-1 only.  Set 0 for MPEG-2
201     render->info.mpeg.f_code[0][0]               = s->mpeg_f_code[0][0]; // For MPEG-1 fill both horiz. & vert.
202     render->info.mpeg.f_code[0][1]               = s->mpeg_f_code[0][1];
203     render->info.mpeg.f_code[1][0]               = s->mpeg_f_code[1][0];
204     render->info.mpeg.f_code[1][1]               = s->mpeg_f_code[1][1];
205     for (i = 0; i < 64; ++i) {
206         render->info.mpeg.intra_quantizer_matrix[i]     = s->intra_matrix[i];
207         render->info.mpeg.non_intra_quantizer_matrix[i] = s->inter_matrix[i];
208     }
209
210     render->info.mpeg.forward_reference          = VDP_INVALID_HANDLE;
211     render->info.mpeg.backward_reference         = VDP_INVALID_HANDLE;
212
213     switch(s->pict_type){
214     case  FF_B_TYPE:
215         next = (struct vdpau_render_state*)s->next_picture.data[0];
216         assert(next);
217         render->info.mpeg.backward_reference     = next->surface;
218         // no return here, going to set forward prediction
219     case  FF_P_TYPE:
220         last = (struct vdpau_render_state*)s->last_picture.data[0];
221         if (!last) // FIXME: Does this test make sense?
222             last = render; // predict second field from the first
223         render->info.mpeg.forward_reference      = last->surface;
224     }
225
226     ff_vdpau_add_data_chunk(s, buf, buf_size);
227
228     render->info.mpeg.slice_count                = slice_count;
229
230     if (slice_count)
231         ff_draw_horiz_band(s, 0, s->avctx->height);
232     render->bitstream_buffers_used               = 0;
233 }
234
235 /* @}*/