path: root/libavcodec/vdpau_mpeg12.c (plain)
blob: b657007ee771022600243edfd51888be18783cfc

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