vdpau: store picture data in picture's rather than codec's context
[ffmpeg.git] / libavcodec / vdpau_mpeg4.c
1 /*
2  * MPEG-4 Part 2 / H.263 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 Libav.
8  *
9  * Libav 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  * Libav 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 Libav; 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 "vdpau.h"
28 #include "vdpau_internal.h"
29
30 static int vdpau_mpeg4_start_frame(AVCodecContext *avctx,
31                                    const uint8_t *buffer, uint32_t size)
32 {
33     MpegEncContext * const s = avctx->priv_data;
34     Picture *pic             = s->current_picture_ptr;
35     struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
36     VdpPictureInfoMPEG4Part2 *info = &pic_ctx->info.mpeg4;
37     VdpVideoSurface ref;
38     int i;
39
40     /* fill VdpPictureInfoMPEG4Part2 struct */
41     info->forward_reference  = VDP_INVALID_HANDLE;
42     info->backward_reference = VDP_INVALID_HANDLE;
43     info->vop_coding_type    = 0;
44
45     switch (s->pict_type) {
46     case AV_PICTURE_TYPE_B:
47         ref = ff_vdpau_get_surface_id(&s->next_picture);
48         assert(ref != VDP_INVALID_HANDLE);
49         info->backward_reference = ref;
50         info->vop_coding_type    = 2;
51         /* fall-through */
52     case AV_PICTURE_TYPE_P:
53         ref = ff_vdpau_get_surface_id(&s->last_picture);
54         assert(ref != VDP_INVALID_HANDLE);
55         info->forward_reference  = ref;
56     }
57
58     info->trd[0]                            = s->pp_time;
59     info->trb[0]                            = s->pb_time;
60     info->trd[1]                            = s->pp_field_time >> 1;
61     info->trb[1]                            = s->pb_field_time >> 1;
62     info->vop_time_increment_resolution     = s->avctx->time_base.den;
63     info->vop_fcode_forward                 = s->f_code;
64     info->vop_fcode_backward                = s->b_code;
65     info->resync_marker_disable             = !s->resync_marker;
66     info->interlaced                        = !s->progressive_sequence;
67     info->quant_type                        = s->mpeg_quant;
68     info->quarter_sample                    = s->quarter_sample;
69     info->short_video_header                = avctx->codec->id == AV_CODEC_ID_H263;
70     info->rounding_control                  = s->no_rounding;
71     info->alternate_vertical_scan_flag      = s->alternate_scan;
72     info->top_field_first                   = s->top_field_first;
73     for (i = 0; i < 64; ++i) {
74         info->intra_quantizer_matrix[i]     = s->intra_matrix[i];
75         info->non_intra_quantizer_matrix[i] = s->inter_matrix[i];
76     }
77
78     ff_vdpau_common_start_frame(pic, buffer, size);
79     return ff_vdpau_add_buffer(pic, buffer, size);
80 }
81
82 static int vdpau_mpeg4_decode_slice(av_unused AVCodecContext *avctx,
83                                     av_unused const uint8_t *buffer,
84                                     av_unused uint32_t size)
85 {
86      return 0;
87 }
88
89 #if CONFIG_H263_VDPAU_HWACCEL
90 AVHWAccel ff_h263_vdpau_hwaccel = {
91     .name           = "h263_vdpau",
92     .type           = AVMEDIA_TYPE_VIDEO,
93     .id             = AV_CODEC_ID_H263,
94     .pix_fmt        = AV_PIX_FMT_VDPAU,
95     .start_frame    = vdpau_mpeg4_start_frame,
96     .end_frame      = ff_vdpau_mpeg_end_frame,
97     .decode_slice   = vdpau_mpeg4_decode_slice,
98     .priv_data_size = sizeof(struct vdpau_picture_context),
99 };
100 #endif
101
102 #if CONFIG_MPEG4_VDPAU_HWACCEL
103 AVHWAccel ff_mpeg4_vdpau_hwaccel = {
104     .name           = "mpeg4_vdpau",
105     .type           = AVMEDIA_TYPE_VIDEO,
106     .id             = AV_CODEC_ID_MPEG4,
107     .pix_fmt        = AV_PIX_FMT_VDPAU,
108     .start_frame    = vdpau_mpeg4_start_frame,
109     .end_frame      = ff_vdpau_mpeg_end_frame,
110     .decode_slice   = vdpau_mpeg4_decode_slice,
111     .priv_data_size = sizeof(struct vdpau_picture_context),
112 };
113 #endif