FFmpeg
vdpau_mpeg12.c
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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 
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:
49  assert(ref != VDP_INVALID_HANDLE);
50  info->backward_reference = ref;
51  /* fall through to forward prediction */
52  case AV_PICTURE_TYPE_P:
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 
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 
107  .name = "mpeg1_vdpau",
108  .type = AVMEDIA_TYPE_VIDEO,
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) {
129  profile = VDP_DECODER_PROFILE_MPEG2_MAIN;
130  break;
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 
142  .name = "mpeg2_vdpau",
143  .type = AVMEDIA_TYPE_VIDEO,
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  .frame_params = ff_vdpau_common_frame_params,
153  .priv_data_size = sizeof(VDPAUContext),
154  .caps_internal = HWACCEL_CAP_ASYNC_SAFE,
155 };
156 #endif
const char const char void * val
Definition: avisynth_c.h:863
#define FF_PROFILE_MPEG2_MAIN
Definition: avcodec.h:2931
int ff_vdpau_common_start_frame(struct vdpau_picture_context *pic_ctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
Definition: vdpau.c:322
static int vdpau_mpeg_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
Definition: vdpau_mpeg12.c:83
mpegvideo header.
Public libavcodec VDPAU header.
int profile
profile
Definition: avcodec.h:2898
int ff_vdpau_common_uninit(AVCodecContext *avctx)
Definition: vdpau.c:284
uint8_t
int full_pel[2]
Definition: mpegvideo.h:490
int intra_dc_precision
Definition: mpegvideo.h:464
ptrdiff_t size
Definition: opengl_enc.c:100
int ff_vdpau_common_init(AVCodecContext *avctx, VdpDecoderProfile profile, int level)
Definition: vdpau.c:133
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
const AVHWAccel ff_mpeg1_vdpau_hwaccel
VdpPictureInfoMPEG1Or2 mpeg
int intra_vlc_format
Definition: mpegvideo.h:470
MIPS optimizations info
Definition: mips.txt:2
int top_field_first
Definition: mpegvideo.h:466
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:3655
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:184
Picture.
Definition: mpegpicture.h:45
int alternate_scan
Definition: mpegvideo.h:471
void * hwaccel_picture_private
Hardware accelerator private data.
Definition: mpegpicture.h:77
#define s(width, name)
Definition: cbs_vp9.c:257
int ff_vdpau_common_frame_params(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
Definition: vdpau.c:114
int mpeg_f_code[2][2]
Definition: mpegvideo.h:457
preferred ID for MPEG-1/2 video decoding
Definition: avcodec.h:220
int frame_pred_frame_dct
Definition: mpegvideo.h:465
uint16_t inter_matrix[64]
Definition: mpegvideo.h:302
int concealment_motion_vectors
Definition: mpegvideo.h:467
Libavcodec external API header.
int ff_vdpau_mpeg_end_frame(AVCodecContext *avctx)
main external API structure.
Definition: avcodec.h:1565
struct AVFrame * f
Definition: mpegpicture.h:46
HW acceleration through VDPAU, Picture.data[3] contains a VdpVideoSurface.
Definition: pixfmt.h:197
const AVHWAccel ff_mpeg2_vdpau_hwaccel
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:212
mfxU16 profile
Definition: qsvenc.c:44
MpegEncContext.
Definition: mpegvideo.h:81
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
int ff_vdpau_add_buffer(struct vdpau_picture_context *pic_ctx, const uint8_t *buf, uint32_t size)
Definition: vdpau.c:377
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:162
Bi-dir predicted.
Definition: avutil.h:276
#define HWACCEL_CAP_ASYNC_SAFE
Definition: hwaccel.h:26
void * priv_data
Definition: avcodec.h:1592
int picture_structure
Definition: mpegvideo.h:461
union VDPAUPictureInfo info
VDPAU picture information.
#define FF_PROFILE_MPEG2_SIMPLE
Definition: avcodec.h:2932
Picture next_picture
copy of the next picture structure.
Definition: mpegvideo.h:168
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
Definition: mpegvideo.h:300
static int vdpau_mpeg_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
Definition: vdpau_mpeg12.c:32
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
Predicted.
Definition: avutil.h:275
GLuint buffer
Definition: opengl_enc.c:101
static uintptr_t ff_vdpau_get_surface_id(AVFrame *pic)
Extract VdpVideoSurface from an AVFrame.