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vaapi_mpeg4.c
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1 /*
2  * MPEG-4 / H.263 HW decode acceleration through VA API
3  *
4  * Copyright (C) 2008-2009 Splitted-Desktop Systems
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #include "h263.h"
24 #include "internal.h"
25 #include "mpeg4video.h"
26 #include "mpegvideo.h"
27 #include "vaapi_decode.h"
28 
29 /** Reconstruct bitstream intra_dc_vlc_thr */
31 {
32  switch (s->intra_dc_threshold) {
33  case 99: return 0;
34  case 13: return 1;
35  case 15: return 2;
36  case 17: return 3;
37  case 19: return 4;
38  case 21: return 5;
39  case 23: return 6;
40  case 0: return 7;
41  }
42  return 0;
43 }
44 
46 {
47  Mpeg4DecContext *ctx = avctx->priv_data;
48  MpegEncContext *s = &ctx->m;
50  VAPictureParameterBufferMPEG4 pic_param;
51  int i, err;
52 
54 
55  pic_param = (VAPictureParameterBufferMPEG4) {
56  .vop_width = s->width,
57  .vop_height = s->height,
58  .forward_reference_picture = VA_INVALID_ID,
59  .backward_reference_picture = VA_INVALID_ID,
60  .vol_fields.bits = {
61  .short_video_header = avctx->codec->id == AV_CODEC_ID_H263,
62  .chroma_format = CHROMA_420,
63  .interlaced = !s->progressive_sequence,
64  .obmc_disable = 1,
65  .sprite_enable = ctx->vol_sprite_usage,
66  .sprite_warping_accuracy = s->sprite_warping_accuracy,
67  .quant_type = s->mpeg_quant,
68  .quarter_sample = s->quarter_sample,
69  .data_partitioned = s->data_partitioning,
70  .reversible_vlc = ctx->rvlc,
71  .resync_marker_disable = !ctx->resync_marker,
72  },
73  .no_of_sprite_warping_points = ctx->num_sprite_warping_points,
74  .quant_precision = s->quant_precision,
75  .vop_fields.bits = {
76  .vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I,
77  .backward_reference_vop_coding_type =
79  .vop_rounding_type = s->no_rounding,
80  .intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(ctx),
81  .top_field_first = s->top_field_first,
82  .alternate_vertical_scan_flag = s->alternate_scan,
83  },
84  .vop_fcode_forward = s->f_code,
85  .vop_fcode_backward = s->b_code,
86  .vop_time_increment_resolution = avctx->framerate.num,
87  .num_macroblocks_in_gob = s->mb_width * H263_GOB_HEIGHT(s->height),
88  .num_gobs_in_vop =
89  (s->mb_width * s->mb_height) / (s->mb_width * H263_GOB_HEIGHT(s->height)),
90  .TRB = s->pb_time,
91  .TRD = s->pp_time,
92  };
93 
94  for (i = 0; i < ctx->num_sprite_warping_points && i < 3; i++) {
95  pic_param.sprite_trajectory_du[i] = ctx->sprite_traj[i][0];
96  pic_param.sprite_trajectory_dv[i] = ctx->sprite_traj[i][1];
97  }
98 
99  if (s->pict_type == AV_PICTURE_TYPE_B)
100  pic_param.backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f);
101  if (s->pict_type != AV_PICTURE_TYPE_I)
102  pic_param.forward_reference_picture = ff_vaapi_get_surface_id(s->last_picture.f);
103 
104  err = ff_vaapi_decode_make_param_buffer(avctx, pic,
105  VAPictureParameterBufferType,
106  &pic_param, sizeof(pic_param));
107  if (err < 0)
108  goto fail;
109 
110  /* Only the first inverse quantisation method uses the weighting matrices */
111  if (pic_param.vol_fields.bits.quant_type) {
112  VAIQMatrixBufferMPEG4 iq_matrix;
113 
114  iq_matrix.load_intra_quant_mat = 1;
115  iq_matrix.load_non_intra_quant_mat = 1;
116 
117  for (i = 0; i < 64; i++) {
119  iq_matrix.intra_quant_mat[i] = s->intra_matrix[n];
120  iq_matrix.non_intra_quant_mat[i] = s->inter_matrix[n];
121  }
122 
123  err = ff_vaapi_decode_make_param_buffer(avctx, pic,
124  VAIQMatrixBufferType,
125  &iq_matrix, sizeof(iq_matrix));
126  if (err < 0)
127  goto fail;
128  }
129  return 0;
130 
131 fail:
132  ff_vaapi_decode_cancel(avctx, pic);
133  return err;
134 }
135 
137 {
138  MpegEncContext *s = avctx->priv_data;
140  int ret;
141 
142  ret = ff_vaapi_decode_issue(avctx, pic);
143  if (ret < 0)
144  goto fail;
145 
147 
148 fail:
149  return ret;
150 }
151 
152 static int vaapi_mpeg4_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
153 {
154  MpegEncContext *s = avctx->priv_data;
156  VASliceParameterBufferMPEG4 slice_param;
157  int err;
158 
159  slice_param = (VASliceParameterBufferMPEG4) {
160  .slice_data_size = size,
161  .slice_data_offset = 0,
162  .slice_data_flag = VA_SLICE_DATA_FLAG_ALL,
163  .macroblock_offset = get_bits_count(&s->gb) % 8,
164  .macroblock_number = 0,
165  .quant_scale = s->qscale,
166  };
167 
168  err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
169  &slice_param, sizeof(slice_param),
170  buffer, size);
171  if (err < 0) {
172  ff_vaapi_decode_cancel(avctx, pic);
173  return err;
174  }
175 
176  return 0;
177 }
178 
179 #if CONFIG_MPEG4_VAAPI_HWACCEL
180 AVHWAccel ff_mpeg4_vaapi_hwaccel = {
181  .name = "mpeg4_vaapi",
182  .type = AVMEDIA_TYPE_VIDEO,
183  .id = AV_CODEC_ID_MPEG4,
184  .pix_fmt = AV_PIX_FMT_VAAPI,
185  .start_frame = &vaapi_mpeg4_start_frame,
186  .end_frame = &vaapi_mpeg4_end_frame,
187  .decode_slice = &vaapi_mpeg4_decode_slice,
188  .frame_priv_data_size = sizeof(VAAPIDecodePicture),
191  .priv_data_size = sizeof(VAAPIDecodeContext),
192 };
193 #endif
194 
195 #if CONFIG_H263_VAAPI_HWACCEL
196 AVHWAccel ff_h263_vaapi_hwaccel = {
197  .name = "h263_vaapi",
198  .type = AVMEDIA_TYPE_VIDEO,
199  .id = AV_CODEC_ID_H263,
200  .pix_fmt = AV_PIX_FMT_VAAPI,
201  .start_frame = &vaapi_mpeg4_start_frame,
202  .end_frame = &vaapi_mpeg4_end_frame,
203  .decode_slice = &vaapi_mpeg4_decode_slice,
204  .frame_priv_data_size = sizeof(VAAPIDecodePicture),
207  .priv_data_size = sizeof(VAAPIDecodeContext),
208 };
209 #endif
uint16_t sprite_traj[4][2]
sprite trajectory points
Definition: mpeg4video.h:75
IDCTDSPContext idsp
Definition: mpegvideo.h:227
const struct AVCodec * codec
Definition: avcodec.h:1699
AVRational framerate
Definition: avcodec.h:3390
const char * s
Definition: avisynth_c.h:768
int sprite_warping_accuracy
Definition: mpegvideo.h:401
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int resync_marker
could this stream contain resync markers
Definition: mpeg4video.h:82
int ff_vaapi_decode_make_param_buffer(AVCodecContext *avctx, VAAPIDecodePicture *pic, int type, const void *data, size_t size)
Definition: vaapi_decode.c:27
static VASurfaceID ff_vaapi_get_surface_id(AVFrame *pic)
Definition: vaapi_decode.h:35
int num
Numerator.
Definition: rational.h:59
mpegvideo header.
int qscale
QP.
Definition: mpegvideo.h:201
int quant_precision
Definition: mpegvideo.h:398
int vol_sprite_usage
Definition: mpeg4video.h:71
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
Definition: mpegvideo.c:2734
int ff_vaapi_decode_uninit(AVCodecContext *avctx)
Definition: vaapi_decode.c:517
uint8_t
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:287
int ff_vaapi_decode_issue(AVCodecContext *avctx, VAAPIDecodePicture *pic)
Definition: vaapi_decode.c:148
int no_rounding
apply no rounding to motion compensation (MPEG-4, msmpeg4, ...) for B-frames rounding mode is always ...
Definition: mpegvideo.h:284
#define CHROMA_420
Definition: mpegvideo.h:473
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:199
uint16_t pp_time
time distance between the last 2 p,s,i frames
Definition: mpegvideo.h:390
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:126
ptrdiff_t size
Definition: opengl_enc.c:101
int intra_dc_threshold
QP above which the ac VLC should be used for intra dc.
Definition: mpeg4video.h:92
MpegEncContext m
Definition: mpeg4video.h:66
enum AVCodecID id
Definition: avcodec.h:3659
static int vaapi_mpeg4_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
Definition: vaapi_mpeg4.c:152
int quarter_sample
1->qpel, 0->half pel ME/MC
Definition: mpegvideo.h:399
GetBitContext gb
Definition: mpegvideo.h:446
#define fail()
Definition: checkasm.h:85
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:264
int top_field_first
Definition: mpegvideo.h:463
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:3771
int ff_vaapi_decode_init(AVCodecContext *avctx)
Definition: vaapi_decode.c:421
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:181
int alternate_scan
Definition: mpegvideo.h:468
void * hwaccel_picture_private
Hardware accelerator private data.
Definition: mpegpicture.h:77
AVFormatContext * ctx
Definition: movenc.c:48
int n
Definition: avisynth_c.h:684
uint8_t idct_permutation[64]
IDCT input permutation.
Definition: idctdsp.h:94
VASurfaceID output_surface
Definition: vaapi_decode.h:45
uint16_t inter_matrix[64]
Definition: mpegvideo.h:302
main external API structure.
Definition: avcodec.h:1690
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:97
int data_partitioning
data partitioning flag from header
Definition: mpegvideo.h:402
int progressive_sequence
Definition: mpegvideo.h:454
struct AVFrame * f
Definition: mpegpicture.h:46
const uint8_t ff_zigzag_direct[64]
Definition: mathtables.c:98
int f_code
forward MV resolution
Definition: mpegvideo.h:235
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:209
static int vaapi_mpeg4_end_frame(AVCodecContext *avctx)
Definition: vaapi_mpeg4.c:136
int ff_vaapi_decode_cancel(AVCodecContext *avctx, VAAPIDecodePicture *pic)
Definition: vaapi_decode.c:220
static int mpeg4_get_intra_dc_vlc_thr(Mpeg4DecContext *s)
Reconstruct bitstream intra_dc_vlc_thr.
Definition: vaapi_mpeg4.c:30
MpegEncContext.
Definition: mpegvideo.h:78
struct AVCodecContext * avctx
Definition: mpegvideo.h:95
static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
Definition: vaapi_mpeg4.c:45
common internal api header.
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:159
Bi-dir predicted.
Definition: avutil.h:276
#define H263_GOB_HEIGHT(h)
Definition: h263.h:44
void * priv_data
Definition: avcodec.h:1732
Picture next_picture
copy of the next picture structure.
Definition: mpegvideo.h:165
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
Definition: mpegvideo.h:300
int num_sprite_warping_points
Definition: mpeg4video.h:73
int b_code
backward MV resolution for B-frames (MPEG-4)
Definition: mpegvideo.h:236
int ff_vaapi_decode_make_slice_buffer(AVCodecContext *avctx, VAAPIDecodePicture *pic, const void *params_data, size_t params_size, const void *slice_data, size_t slice_size)
Definition: vaapi_decode.c:56
GLuint buffer
Definition: opengl_enc.c:102
#define av_unused
Definition: attributes.h:125
uint16_t pb_time
time distance between the last b and p,s,i frame
Definition: mpegvideo.h:391