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roqvideo.c
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1 /*
2  * Copyright (C) 2003 Mike Melanson
3  * Copyright (C) 2003 Dr. Tim Ferguson
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * id RoQ Video common functions based on work by Dr. Tim Ferguson
25  */
26 
27 #include "avcodec.h"
28 #include "roqvideo.h"
29 
30 static inline void block_copy(unsigned char *out, unsigned char *in,
31  int outstride, int instride, int sz)
32 {
33  int rows = sz;
34  while(rows--) {
35  memcpy(out, in, sz);
36  out += outstride;
37  in += instride;
38  }
39 }
40 
41 void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell)
42 {
43  unsigned char *bptr;
44  int boffs,stride;
45 
46  stride = ri->current_frame->linesize[0];
47  boffs = y*stride + x;
48 
49  bptr = ri->current_frame->data[0] + boffs;
50  bptr[0 ] = cell->y[0];
51  bptr[1 ] = cell->y[1];
52  bptr[stride ] = cell->y[2];
53  bptr[stride+1] = cell->y[3];
54 
55  stride = ri->current_frame->linesize[1];
56  boffs = y*stride + x;
57 
58  bptr = ri->current_frame->data[1] + boffs;
59  bptr[0 ] =
60  bptr[1 ] =
61  bptr[stride ] =
62  bptr[stride+1] = cell->u;
63 
64  bptr = ri->current_frame->data[2] + boffs;
65  bptr[0 ] =
66  bptr[1 ] =
67  bptr[stride ] =
68  bptr[stride+1] = cell->v;
69 }
70 
71 void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell)
72 {
73  unsigned char *bptr;
74  int boffs,stride;
75 
76  stride = ri->current_frame->linesize[0];
77  boffs = y*stride + x;
78 
79  bptr = ri->current_frame->data[0] + boffs;
80  bptr[ 0] = bptr[ 1] = bptr[stride ] = bptr[stride +1] = cell->y[0];
81  bptr[ 2] = bptr[ 3] = bptr[stride +2] = bptr[stride +3] = cell->y[1];
82  bptr[stride*2 ] = bptr[stride*2+1] = bptr[stride*3 ] = bptr[stride*3+1] = cell->y[2];
83  bptr[stride*2+2] = bptr[stride*2+3] = bptr[stride*3+2] = bptr[stride*3+3] = cell->y[3];
84 
85  stride = ri->current_frame->linesize[1];
86  boffs = y*stride + x;
87 
88  bptr = ri->current_frame->data[1] + boffs;
89  bptr[ 0] = bptr[ 1] = bptr[stride ] = bptr[stride +1] =
90  bptr[ 2] = bptr[ 3] = bptr[stride +2] = bptr[stride +3] =
91  bptr[stride*2 ] = bptr[stride*2+1] = bptr[stride*3 ] = bptr[stride*3+1] =
92  bptr[stride*2+2] = bptr[stride*2+3] = bptr[stride*3+2] = bptr[stride*3+3] = cell->u;
93 
94  bptr = ri->current_frame->data[2] + boffs;
95  bptr[ 0] = bptr[ 1] = bptr[stride ] = bptr[stride +1] =
96  bptr[ 2] = bptr[ 3] = bptr[stride +2] = bptr[stride +3] =
97  bptr[stride*2 ] = bptr[stride*2+1] = bptr[stride*3 ] = bptr[stride*3+1] =
98  bptr[stride*2+2] = bptr[stride*2+3] = bptr[stride*3+2] = bptr[stride*3+3] = cell->v;
99 }
100 
101 
102 static inline void apply_motion_generic(RoqContext *ri, int x, int y, int deltax,
103  int deltay, int sz)
104 {
105  int mx, my, cp;
106 
107  mx = x + deltax;
108  my = y + deltay;
109 
110  /* check MV against frame boundaries */
111  if ((mx < 0) || (mx > ri->width - sz) ||
112  (my < 0) || (my > ri->height - sz)) {
113  av_log(ri->avctx, AV_LOG_ERROR, "motion vector out of bounds: MV = (%d, %d), boundaries = (0, 0, %d, %d)\n",
114  mx, my, ri->width, ri->height);
115  return;
116  }
117 
118  if (!ri->last_frame->data[0]) {
119  av_log(ri->avctx, AV_LOG_ERROR, "Invalid decode type. Invalid header?\n");
120  return;
121  }
122 
123  for(cp = 0; cp < 3; cp++) {
124  int outstride = ri->current_frame->linesize[cp];
125  int instride = ri->last_frame ->linesize[cp];
126  block_copy(ri->current_frame->data[cp] + y*outstride + x,
127  ri->last_frame->data[cp] + my*instride + mx,
128  outstride, instride, sz);
129  }
130 }
131 
132 
133 void ff_apply_motion_4x4(RoqContext *ri, int x, int y,
134  int deltax, int deltay)
135 {
136  apply_motion_generic(ri, x, y, deltax, deltay, 4);
137 }
138 
139 void ff_apply_motion_8x8(RoqContext *ri, int x, int y,
140  int deltax, int deltay)
141 {
142  apply_motion_generic(ri, x, y, deltax, deltay, 8);
143 }
static void block_copy(unsigned char *out, unsigned char *in, int outstride, int instride, int sz)
Definition: roqvideo.c:30
void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell)
Definition: roqvideo.c:41
AVFrame * current_frame
Definition: roqvideo.h:49
int width
Definition: roqvideo.h:56
void ff_apply_motion_4x4(RoqContext *ri, int x, int y, int deltax, int deltay)
Definition: roqvideo.c:133
#define av_log(a,...)
void ff_apply_motion_8x8(RoqContext *ri, int x, int y, int deltax, int deltay)
Definition: roqvideo.c:139
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
unsigned char u
Definition: roqvideo.h:31
In the ELBG jargon, a cell is the set of points that are closest to a codebook entry.
Definition: elbg.c:39
FILE * out
Definition: movenc-test.c:54
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:211
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
unsigned char y[4]
Definition: roqvideo.h:30
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:194
AVCodecContext * avctx
Definition: roqvideo.h:47
void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell)
Definition: roqvideo.c:71
static void apply_motion_generic(RoqContext *ri, int x, int y, int deltax, int deltay, int sz)
Definition: roqvideo.c:102
AVFrame * last_frame
Definition: roqvideo.h:48
#define stride
unsigned char v
Definition: roqvideo.h:31
int height
Definition: roqvideo.h:56