FFmpeg  4.3
wmv2.c
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1 /*
2  * Copyright (c) 2002 The FFmpeg Project
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "avcodec.h"
22 #include "idctdsp.h"
23 #include "mpegutils.h"
24 #include "mpegvideo.h"
25 #include "msmpeg4data.h"
26 #include "simple_idct.h"
27 #include "wmv2.h"
28 #include "wmv2data.h"
29 
30 
32 {
33  MpegEncContext *const s = &w->s;
34 
35  ff_blockdsp_init(&s->bdsp, s->avctx);
36  ff_wmv2dsp_init(&w->wdsp);
37  s->idsp.perm_type = w->wdsp.idct_perm;
38  ff_init_scantable_permutation(s->idsp.idct_permutation,
39  w->wdsp.idct_perm);
40  ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[0],
42  ff_init_scantable(s->idsp.idct_permutation, &w->abt_scantable[1],
44  ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable,
46  ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable,
48  ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable,
50  ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable,
52  s->idsp.idct_put = w->wdsp.idct_put;
53  s->idsp.idct_add = w->wdsp.idct_add;
54  s->idsp.idct = NULL;
55 }
56 
57 static void wmv2_add_block(Wmv2Context *w, int16_t *block1,
58  uint8_t *dst, int stride, int n)
59 {
60  MpegEncContext *const s = &w->s;
61 
62  if (s->block_last_index[n] >= 0) {
63  switch (w->abt_type_table[n]) {
64  case 0:
65  w->wdsp.idct_add(dst, stride, block1);
66  break;
67  case 1:
69  ff_simple_idct84_add(dst + 4 * stride, stride, w->abt_block2[n]);
70  s->bdsp.clear_block(w->abt_block2[n]);
71  break;
72  case 2:
74  ff_simple_idct48_add(dst + 4, stride, w->abt_block2[n]);
75  s->bdsp.clear_block(w->abt_block2[n]);
76  break;
77  default:
78  av_log(s->avctx, AV_LOG_ERROR, "internal error in WMV2 abt\n");
79  }
80  }
81 }
82 
83 void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64],
84  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr)
85 {
86  Wmv2Context *const w = (Wmv2Context *) s;
87 
88  wmv2_add_block(w, block1[0], dest_y, s->linesize, 0);
89  wmv2_add_block(w, block1[1], dest_y + 8, s->linesize, 1);
90  wmv2_add_block(w, block1[2], dest_y + 8 * s->linesize, s->linesize, 2);
91  wmv2_add_block(w, block1[3], dest_y + 8 + 8 * s->linesize, s->linesize, 3);
92 
93  if (s->avctx->flags & AV_CODEC_FLAG_GRAY)
94  return;
95 
96  wmv2_add_block(w, block1[4], dest_cb, s->uvlinesize, 4);
97  wmv2_add_block(w, block1[5], dest_cr, s->uvlinesize, 5);
98 }
99 
101  uint8_t *dest_cb, uint8_t *dest_cr,
102  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
103  int motion_x, int motion_y, int h)
104 {
105  Wmv2Context *const w = (Wmv2Context *) s;
106  uint8_t *ptr;
107  int dxy, mx, my, src_x, src_y, v_edge_pos;
108  ptrdiff_t offset, linesize, uvlinesize;
109  int emu = 0;
110 
111  dxy = ((motion_y & 1) << 1) | (motion_x & 1);
112  dxy = 2 * dxy + w->hshift;
113  src_x = s->mb_x * 16 + (motion_x >> 1);
114  src_y = s->mb_y * 16 + (motion_y >> 1);
115 
116  /* WARNING: do no forget half pels */
117  v_edge_pos = s->v_edge_pos;
118  src_x = av_clip(src_x, -16, s->width);
119  src_y = av_clip(src_y, -16, s->height);
120 
121  if (src_x <= -16 || src_x >= s->width)
122  dxy &= ~3;
123  if (src_y <= -16 || src_y >= s->height)
124  dxy &= ~4;
125 
126  linesize = s->linesize;
127  uvlinesize = s->uvlinesize;
128  ptr = ref_picture[0] + (src_y * linesize) + src_x;
129 
130  if (src_x < 1 || src_y < 1 || src_x + 17 >= s->h_edge_pos ||
131  src_y + h + 1 >= v_edge_pos) {
132  s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr - 1 - s->linesize,
133  s->linesize, s->linesize, 19, 19,
134  src_x - 1, src_y - 1,
135  s->h_edge_pos, s->v_edge_pos);
136  ptr = s->sc.edge_emu_buffer + 1 + s->linesize;
137  emu = 1;
138  }
139 
140  w->wdsp.put_mspel_pixels_tab[dxy](dest_y, ptr, linesize);
141  w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8, ptr + 8, linesize);
142  w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 * linesize, ptr + 8 * linesize, linesize);
143  w->wdsp.put_mspel_pixels_tab[dxy](dest_y + 8 + 8 * linesize, ptr + 8 + 8 * linesize, linesize);
144 
145  if (s->avctx->flags & AV_CODEC_FLAG_GRAY)
146  return;
147 
148  dxy = 0;
149  if ((motion_x & 3) != 0)
150  dxy |= 1;
151  if ((motion_y & 3) != 0)
152  dxy |= 2;
153  mx = motion_x >> 2;
154  my = motion_y >> 2;
155 
156  src_x = s->mb_x * 8 + mx;
157  src_y = s->mb_y * 8 + my;
158  src_x = av_clip(src_x, -8, s->width >> 1);
159  if (src_x == (s->width >> 1))
160  dxy &= ~1;
161  src_y = av_clip(src_y, -8, s->height >> 1);
162  if (src_y == (s->height >> 1))
163  dxy &= ~2;
164  offset = (src_y * uvlinesize) + src_x;
165  ptr = ref_picture[1] + offset;
166  if (emu) {
167  s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
168  s->uvlinesize, s->uvlinesize,
169  9, 9,
170  src_x, src_y,
171  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
172  ptr = s->sc.edge_emu_buffer;
173  }
174  pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
175 
176  ptr = ref_picture[2] + offset;
177  if (emu) {
178  s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,
179  s->uvlinesize, s->uvlinesize,
180  9, 9,
181  src_x, src_y,
182  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
183  ptr = s->sc.edge_emu_buffer;
184  }
185  pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
186 }
stride
int stride
Definition: mace.c:144
ff_init_scantable
av_cold void ff_init_scantable(uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable)
Definition: idctdsp.c:29
ff_wmv1_scantable
const uint8_t ff_wmv1_scantable[WMV1_SCANTABLE_COUNT][64]
Definition: msmpeg4data.c:1809
ff_simple_idct84_add
void ff_simple_idct84_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:194
ff_wmv2_common_init
av_cold void ff_wmv2_common_init(Wmv2Context *w)
Definition: wmv2.c:31
mpegvideo.h
mpegutils.h
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
av_cold
#define av_cold
Definition: attributes.h:90
msmpeg4data.h
s
#define s(width, name)
Definition: cbs_vp9.c:257
wmv2data.h
ff_simple_idct48_add
void ff_simple_idct48_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
Definition: simple_idct.c:209
simple_idct.h
NULL
#define NULL
Definition: coverity.c:32
ff_wmv2dsp_init
av_cold void ff_wmv2dsp_init(WMV2DSPContext *c)
Definition: wmv2dsp.c:251
op_pixels_func
void(* op_pixels_func)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
Definition: hpeldsp.h:38
wmv2.h
AV_CODEC_FLAG_GRAY
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:308
ff_wmv2_scantableB
const uint8_t ff_wmv2_scantableB[64]
Definition: wmv2data.c:30
ff_wmv2_scantableA
const uint8_t ff_wmv2_scantableA[64]
Definition: wmv2data.c:23
offset
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
Definition: writing_filters.txt:86
ff_init_scantable_permutation
av_cold void ff_init_scantable_permutation(uint8_t *idct_permutation, enum idct_permutation_type perm_type)
Definition: idctdsp.c:50
wmv2_add_block
static void wmv2_add_block(Wmv2Context *w, int16_t *block1, uint8_t *dst, int stride, int n)
Definition: wmv2.c:57
uint8_t
uint8_t
Definition: audio_convert.c:194
ff_wmv2_add_mb
void ff_wmv2_add_mb(MpegEncContext *s, int16_t block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr)
Definition: wmv2.c:83
idctdsp.h
avcodec.h
w
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo ug o o w
Definition: fate.txt:150
Wmv2Context
Definition: wmv2.h:35
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
h
h
Definition: vp9dsp_template.c:2038
ff_blockdsp_init
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp.c:60
MpegEncContext
MpegEncContext.
Definition: mpegvideo.h:81
block1
static int16_t block1[64]
Definition: dct.c:116
ff_mspel_motion
void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, uint8_t **ref_picture, op_pixels_func(*pix_op)[4], int motion_x, int motion_y, int h)
Definition: wmv2.c:100