1/*
2 * MPEG-1/2 HW decode acceleration through VDPAU
3 *
4 * Copyright (c) 2008 NVIDIA
5 * Copyright (c) 2013 Rémi 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 "config_components.h"
25
26#include <vdpau/vdpau.h>
27
28#include "avcodec.h"
29#include "hwconfig.h"
30#include "mpegvideo.h"
31#include "vdpau.h"
32#include "vdpau_internal.h"
33
34static int vdpau_mpeg_start_frame(AVCodecContext *avctx,
35                                  const uint8_t *buffer, uint32_t size)
36{
37    MpegEncContext * const s = avctx->priv_data;
38    Picture *pic             = s->current_picture_ptr;
39    struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
40    VdpPictureInfoMPEG1Or2 *info = &pic_ctx->info.mpeg;
41    VdpVideoSurface ref;
42    int i;
43
44    /* fill VdpPictureInfoMPEG1Or2 struct */
45    info->forward_reference  = VDP_INVALID_HANDLE;
46    info->backward_reference = VDP_INVALID_HANDLE;
47
48    switch (s->pict_type) {
49    case AV_PICTURE_TYPE_B:
50        ref = ff_vdpau_get_surface_id(s->next_picture.f);
51        assert(ref != VDP_INVALID_HANDLE);
52        info->backward_reference = ref;
53        /* fall through to forward prediction */
54    case AV_PICTURE_TYPE_P:
55        ref = ff_vdpau_get_surface_id(s->last_picture.f);
56        info->forward_reference  = ref;
57    }
58
59    info->slice_count                = 0;
60    info->picture_structure          = s->picture_structure;
61    info->picture_coding_type        = s->pict_type;
62    info->intra_dc_precision         = s->intra_dc_precision;
63    info->frame_pred_frame_dct       = s->frame_pred_frame_dct;
64    info->concealment_motion_vectors = s->concealment_motion_vectors;
65    info->intra_vlc_format           = s->intra_vlc_format;
66    info->alternate_scan             = s->alternate_scan;
67    info->q_scale_type               = s->q_scale_type;
68    info->top_field_first            = s->top_field_first;
69    // Both for MPEG-1 only, zero for MPEG-2:
70    info->full_pel_forward_vector    = s->full_pel[0];
71    info->full_pel_backward_vector   = s->full_pel[1];
72    // For MPEG-1 fill both horizontal & vertical:
73    info->f_code[0][0]               = s->mpeg_f_code[0][0];
74    info->f_code[0][1]               = s->mpeg_f_code[0][1];
75    info->f_code[1][0]               = s->mpeg_f_code[1][0];
76    info->f_code[1][1]               = s->mpeg_f_code[1][1];
77    for (i = 0; i < 64; ++i) {
78        int n = s->idsp.idct_permutation[i];
79        info->intra_quantizer_matrix[i]     = s->intra_matrix[n];
80        info->non_intra_quantizer_matrix[i] = s->inter_matrix[n];
81    }
82
83    return ff_vdpau_common_start_frame(pic_ctx, buffer, size);
84}
85
86static int vdpau_mpeg_decode_slice(AVCodecContext *avctx,
87                                   const uint8_t *buffer, uint32_t size)
88{
89    MpegEncContext * const s = avctx->priv_data;
90    Picture *pic             = s->current_picture_ptr;
91    struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private;
92    int val;
93
94    val = ff_vdpau_add_buffer(pic_ctx, buffer, size);
95    if (val < 0)
96        return val;
97
98    pic_ctx->info.mpeg.slice_count++;
99    return 0;
100}
101
102#if CONFIG_MPEG1_VDPAU_HWACCEL
103static int vdpau_mpeg1_init(AVCodecContext *avctx)
104{
105    return ff_vdpau_common_init(avctx, VDP_DECODER_PROFILE_MPEG1,
106                                VDP_DECODER_LEVEL_MPEG1_NA);
107}
108
109const AVHWAccel ff_mpeg1_vdpau_hwaccel = {
110    .name           = "mpeg1_vdpau",
111    .type           = AVMEDIA_TYPE_VIDEO,
112    .id             = AV_CODEC_ID_MPEG1VIDEO,
113    .pix_fmt        = AV_PIX_FMT_VDPAU,
114    .start_frame    = vdpau_mpeg_start_frame,
115    .end_frame      = ff_vdpau_mpeg_end_frame,
116    .decode_slice   = vdpau_mpeg_decode_slice,
117    .frame_priv_data_size = sizeof(struct vdpau_picture_context),
118    .init           = vdpau_mpeg1_init,
119    .uninit         = ff_vdpau_common_uninit,
120    .priv_data_size = sizeof(VDPAUContext),
121    .caps_internal  = HWACCEL_CAP_ASYNC_SAFE,
122};
123#endif
124
125#if CONFIG_MPEG2_VDPAU_HWACCEL
126static int vdpau_mpeg2_init(AVCodecContext *avctx)
127{
128    VdpDecoderProfile profile;
129
130    switch (avctx->profile) {
131    case FF_PROFILE_MPEG2_MAIN:
132        profile = VDP_DECODER_PROFILE_MPEG2_MAIN;
133        break;
134    case FF_PROFILE_MPEG2_SIMPLE:
135        profile = VDP_DECODER_PROFILE_MPEG2_SIMPLE;
136        break;
137    default:
138        return AVERROR(EINVAL);
139    }
140
141    return ff_vdpau_common_init(avctx, profile, VDP_DECODER_LEVEL_MPEG2_HL);
142}
143
144const AVHWAccel ff_mpeg2_vdpau_hwaccel = {
145    .name           = "mpeg2_vdpau",
146    .type           = AVMEDIA_TYPE_VIDEO,
147    .id             = AV_CODEC_ID_MPEG2VIDEO,
148    .pix_fmt        = AV_PIX_FMT_VDPAU,
149    .start_frame    = vdpau_mpeg_start_frame,
150    .end_frame      = ff_vdpau_mpeg_end_frame,
151    .decode_slice   = vdpau_mpeg_decode_slice,
152    .frame_priv_data_size = sizeof(struct vdpau_picture_context),
153    .init           = vdpau_mpeg2_init,
154    .uninit         = ff_vdpau_common_uninit,
155    .frame_params   = ff_vdpau_common_frame_params,
156    .priv_data_size = sizeof(VDPAUContext),
157    .caps_internal  = HWACCEL_CAP_ASYNC_SAFE,
158};
159#endif
160