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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 "hwaccel.h"
25 #include "internal.h"
26 #include "mpeg4video.h"
27 #include "mpegvideo.h"
28 #include "vaapi_decode.h"
29 
30 /** Reconstruct bitstream intra_dc_vlc_thr */
32 {
33  switch (s->intra_dc_threshold) {
34  case 99: return 0;
35  case 13: return 1;
36  case 15: return 2;
37  case 17: return 3;
38  case 19: return 4;
39  case 21: return 5;
40  case 23: return 6;
41  case 0: return 7;
42  }
43  return 0;
44 }
45 
47 {
48  Mpeg4DecContext *ctx = avctx->priv_data;
49  MpegEncContext *s = &ctx->m;
51  VAPictureParameterBufferMPEG4 pic_param;
52  int i, err;
53 
55 
56  pic_param = (VAPictureParameterBufferMPEG4) {
57  .vop_width = s->width,
58  .vop_height = s->height,
59  .forward_reference_picture = VA_INVALID_ID,
60  .backward_reference_picture = VA_INVALID_ID,
61  .vol_fields.bits = {
62  .short_video_header = avctx->codec->id == AV_CODEC_ID_H263,
63  .chroma_format = CHROMA_420,
64  .interlaced = !s->progressive_sequence,
65  .obmc_disable = 1,
66  .sprite_enable = ctx->vol_sprite_usage,
67  .sprite_warping_accuracy = s->sprite_warping_accuracy,
68  .quant_type = s->mpeg_quant,
69  .quarter_sample = s->quarter_sample,
70  .data_partitioned = s->data_partitioning,
71  .reversible_vlc = ctx->rvlc,
72  .resync_marker_disable = !ctx->resync_marker,
73  },
74  .no_of_sprite_warping_points = ctx->num_sprite_warping_points,
75  .quant_precision = s->quant_precision,
76  .vop_fields.bits = {
77  .vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I,
78  .backward_reference_vop_coding_type =
80  .vop_rounding_type = s->no_rounding,
81  .intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(ctx),
82  .top_field_first = s->top_field_first,
83  .alternate_vertical_scan_flag = s->alternate_scan,
84  },
85  .vop_fcode_forward = s->f_code,
86  .vop_fcode_backward = s->b_code,
87  .vop_time_increment_resolution = avctx->framerate.num,
88  .num_macroblocks_in_gob = s->mb_width * H263_GOB_HEIGHT(s->height),
89  .num_gobs_in_vop =
90  (s->mb_width * s->mb_height) / (s->mb_width * H263_GOB_HEIGHT(s->height)),
91  .TRB = s->pb_time,
92  .TRD = s->pp_time,
93  };
94 
95  for (i = 0; i < ctx->num_sprite_warping_points && i < 3; i++) {
96  pic_param.sprite_trajectory_du[i] = ctx->sprite_traj[i][0];
97  pic_param.sprite_trajectory_dv[i] = ctx->sprite_traj[i][1];
98  }
99 
100  if (s->pict_type == AV_PICTURE_TYPE_B)
101  pic_param.backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f);
102  if (s->pict_type != AV_PICTURE_TYPE_I)
103  pic_param.forward_reference_picture = ff_vaapi_get_surface_id(s->last_picture.f);
104 
105  err = ff_vaapi_decode_make_param_buffer(avctx, pic,
106  VAPictureParameterBufferType,
107  &pic_param, sizeof(pic_param));
108  if (err < 0)
109  goto fail;
110 
111  /* Only the first inverse quantisation method uses the weighting matrices */
112  if (pic_param.vol_fields.bits.quant_type) {
113  VAIQMatrixBufferMPEG4 iq_matrix;
114 
115  iq_matrix.load_intra_quant_mat = 1;
116  iq_matrix.load_non_intra_quant_mat = 1;
117 
118  for (i = 0; i < 64; i++) {
120  iq_matrix.intra_quant_mat[i] = s->intra_matrix[n];
121  iq_matrix.non_intra_quant_mat[i] = s->inter_matrix[n];
122  }
123 
124  err = ff_vaapi_decode_make_param_buffer(avctx, pic,
125  VAIQMatrixBufferType,
126  &iq_matrix, sizeof(iq_matrix));
127  if (err < 0)
128  goto fail;
129  }
130  return 0;
131 
132 fail:
133  ff_vaapi_decode_cancel(avctx, pic);
134  return err;
135 }
136 
138 {
139  MpegEncContext *s = avctx->priv_data;
141  int ret;
142 
143  ret = ff_vaapi_decode_issue(avctx, pic);
144  if (ret < 0)
145  goto fail;
146 
148 
149 fail:
150  return ret;
151 }
152 
153 static int vaapi_mpeg4_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
154 {
155  MpegEncContext *s = avctx->priv_data;
157  VASliceParameterBufferMPEG4 slice_param;
158  int err;
159 
160  slice_param = (VASliceParameterBufferMPEG4) {
161  .slice_data_size = size,
162  .slice_data_offset = 0,
163  .slice_data_flag = VA_SLICE_DATA_FLAG_ALL,
164  .macroblock_offset = get_bits_count(&s->gb) % 8,
165  .macroblock_number = 0,
166  .quant_scale = s->qscale,
167  };
168 
169  err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
170  &slice_param, sizeof(slice_param),
171  buffer, size);
172  if (err < 0) {
173  ff_vaapi_decode_cancel(avctx, pic);
174  return err;
175  }
176 
177  return 0;
178 }
179 
180 #if CONFIG_MPEG4_VAAPI_HWACCEL
181 AVHWAccel ff_mpeg4_vaapi_hwaccel = {
182  .name = "mpeg4_vaapi",
183  .type = AVMEDIA_TYPE_VIDEO,
184  .id = AV_CODEC_ID_MPEG4,
185  .pix_fmt = AV_PIX_FMT_VAAPI,
186  .start_frame = &vaapi_mpeg4_start_frame,
187  .end_frame = &vaapi_mpeg4_end_frame,
188  .decode_slice = &vaapi_mpeg4_decode_slice,
189  .frame_priv_data_size = sizeof(VAAPIDecodePicture),
192  .priv_data_size = sizeof(VAAPIDecodeContext),
193  .caps_internal = HWACCEL_CAP_ASYNC_SAFE,
194 };
195 #endif
196 
197 #if CONFIG_H263_VAAPI_HWACCEL
198 AVHWAccel ff_h263_vaapi_hwaccel = {
199  .name = "h263_vaapi",
200  .type = AVMEDIA_TYPE_VIDEO,
201  .id = AV_CODEC_ID_H263,
202  .pix_fmt = AV_PIX_FMT_VAAPI,
203  .start_frame = &vaapi_mpeg4_start_frame,
204  .end_frame = &vaapi_mpeg4_end_frame,
205  .decode_slice = &vaapi_mpeg4_decode_slice,
206  .frame_priv_data_size = sizeof(VAAPIDecodePicture),
209  .priv_data_size = sizeof(VAAPIDecodeContext),
210  .caps_internal = HWACCEL_CAP_ASYNC_SAFE,
211 };
212 #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:1755
AVRational framerate
Definition: avcodec.h:3443
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:28
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:603
uint8_t
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:279
int ff_vaapi_decode_issue(AVCodecContext *avctx, VAAPIDecodePicture *pic)
Definition: vaapi_decode.c:149
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:3736
static int vaapi_mpeg4_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
Definition: vaapi_mpeg4.c:153
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:98
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
int top_field_first
Definition: mpegvideo.h:463
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:3856
int ff_vaapi_decode_init(AVCodecContext *avctx)
Definition: vaapi_decode.c:471
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:96
VASurfaceID output_surface
Definition: vaapi_decode.h:45
uint16_t inter_matrix[64]
Definition: mpegvideo.h:302
main external API structure.
Definition: avcodec.h:1746
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:137
int ff_vaapi_decode_cancel(AVCodecContext *avctx, VAAPIDecodePicture *pic)
Definition: vaapi_decode.c:221
static int mpeg4_get_intra_dc_vlc_thr(Mpeg4DecContext *s)
Reconstruct bitstream intra_dc_vlc_thr.
Definition: vaapi_mpeg4.c:31
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:46
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
#define HWACCEL_CAP_ASYNC_SAFE
Definition: hwaccel.h:22
void * priv_data
Definition: avcodec.h:1788
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:57
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