2 * MPEG-1/2 HW decode acceleration through VDPAU
4 * Copyright (c) 2008 NVIDIA
5 * Copyright (c) 2013 RĂ©mi Denis-Courmont
7 * This file is part of FFmpeg.
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.
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.
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
24 #include <vdpau/vdpau.h>
28 #include "vdpau_internal.h"
30 static int vdpau_mpeg_start_frame(AVCodecContext
*avctx
,
31 const uint8_t *buffer
, uint32_t size
)
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 VdpPictureInfoMPEG1Or2
*info
= &pic_ctx
->info
.mpeg
;
40 /* fill VdpPictureInfoMPEG1Or2 struct */
41 info
->forward_reference
= VDP_INVALID_HANDLE
;
42 info
->backward_reference
= VDP_INVALID_HANDLE
;
44 switch (s
->pict_type
) {
45 case AV_PICTURE_TYPE_B
:
46 ref
= ff_vdpau_get_surface_id(s
->next_picture
.f
);
47 assert(ref
!= VDP_INVALID_HANDLE
);
48 info
->backward_reference
= ref
;
49 /* fall through to forward prediction */
50 case AV_PICTURE_TYPE_P
:
51 ref
= ff_vdpau_get_surface_id(s
->last_picture
.f
);
52 info
->forward_reference
= ref
;
55 info
->slice_count
= 0;
56 info
->picture_structure
= s
->picture_structure
;
57 info
->picture_coding_type
= s
->pict_type
;
58 info
->intra_dc_precision
= s
->intra_dc_precision
;
59 info
->frame_pred_frame_dct
= s
->frame_pred_frame_dct
;
60 info
->concealment_motion_vectors
= s
->concealment_motion_vectors
;
61 info
->intra_vlc_format
= s
->intra_vlc_format
;
62 info
->alternate_scan
= s
->alternate_scan
;
63 info
->q_scale_type
= s
->q_scale_type
;
64 info
->top_field_first
= s
->top_field_first
;
65 // Both for MPEG-1 only, zero for MPEG-2:
66 info
->full_pel_forward_vector
= s
->full_pel
[0];
67 info
->full_pel_backward_vector
= s
->full_pel
[1];
68 // For MPEG-1 fill both horizontal & vertical:
69 info
->f_code
[0][0] = s
->mpeg_f_code
[0][0];
70 info
->f_code
[0][1] = s
->mpeg_f_code
[0][1];
71 info
->f_code
[1][0] = s
->mpeg_f_code
[1][0];
72 info
->f_code
[1][1] = s
->mpeg_f_code
[1][1];
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
];
78 return ff_vdpau_common_start_frame(pic_ctx
, buffer
, size
);
81 static int vdpau_mpeg_decode_slice(AVCodecContext
*avctx
,
82 const uint8_t *buffer
, uint32_t size
)
84 MpegEncContext
* const s
= avctx
->priv_data
;
85 Picture
*pic
= s
->current_picture_ptr
;
86 struct vdpau_picture_context
*pic_ctx
= pic
->hwaccel_picture_private
;
89 val
= ff_vdpau_add_buffer(pic_ctx
, buffer
, size
);
93 pic_ctx
->info
.mpeg
.slice_count
++;
97 #if CONFIG_MPEG1_VDPAU_HWACCEL
98 AVHWAccel ff_mpeg1_vdpau_hwaccel
= {
99 .name
= "mpeg1_vdpau",
100 .type
= AVMEDIA_TYPE_VIDEO
,
101 .id
= AV_CODEC_ID_MPEG1VIDEO
,
102 .pix_fmt
= AV_PIX_FMT_VDPAU
,
103 .start_frame
= vdpau_mpeg_start_frame
,
104 .end_frame
= ff_vdpau_mpeg_end_frame
,
105 .decode_slice
= vdpau_mpeg_decode_slice
,
106 .frame_priv_data_size
= sizeof(struct vdpau_picture_context
),
110 #if CONFIG_MPEG2_VDPAU_HWACCEL
111 AVHWAccel ff_mpeg2_vdpau_hwaccel
= {
112 .name
= "mpeg2_vdpau",
113 .type
= AVMEDIA_TYPE_VIDEO
,
114 .id
= AV_CODEC_ID_MPEG2VIDEO
,
115 .pix_fmt
= AV_PIX_FMT_VDPAU
,
116 .start_frame
= vdpau_mpeg_start_frame
,
117 .end_frame
= ff_vdpau_mpeg_end_frame
,
118 .decode_slice
= vdpau_mpeg_decode_slice
,
119 .frame_priv_data_size
= sizeof(struct vdpau_picture_context
),