* Based on code from the OggTheora software codec source code,
* Copyright (C) 2002-2010 The Xiph.Org Foundation and contributors.
*/
+#include <errno.h>
#include <stdlib.h>
#include <string.h>
+
+#include "vpx/vpx_integer.h"
#include "y4minput.h"
-static int y4m_parse_tags(y4m_input *_y4m,char *_tags){
+// Reads 'size' bytes from 'file' into 'buf' with some fault tolerance.
+// Returns true on success.
+static int file_read(void *buf, size_t size, FILE *file) {
+ const int kMaxRetries = 5;
+ int retry_count = 0;
+ int file_error;
+ size_t len = 0;
+ do {
+ const size_t n = fread((uint8_t*)buf + len, 1, size - len, file);
+ len += n;
+ file_error = ferror(file);
+ if (file_error) {
+ if (errno == EINTR || errno == EAGAIN) {
+ clearerr(file);
+ continue;
+ } else {
+ fprintf(stderr, "Error reading file: %u of %u bytes read, %d: %s\n",
+ (uint32_t)len, (uint32_t)size, errno, strerror(errno));
+ return 0;
+ }
+ }
+ } while (!feof(file) && len < size && ++retry_count < kMaxRetries);
+
+ if (!feof(file) && len != size) {
+ fprintf(stderr, "Error reading file: %u of %u bytes read,"
+ " error: %d, retries: %d, %d: %s\n",
+ (uint32_t)len, (uint32_t)size, file_error, retry_count,
+ errno, strerror(errno));
+ }
+ return len == size;
+}
+
+static int y4m_parse_tags(y4m_input *_y4m, char *_tags) {
int got_w;
int got_h;
int got_fps;
int got_chroma;
char *p;
char *q;
- got_w=got_h=got_fps=got_interlace=got_par=got_chroma=0;
- for(p=_tags;;p=q){
+ got_w = got_h = got_fps = got_interlace = got_par = got_chroma = 0;
+ for (p = _tags;; p = q) {
/*Skip any leading spaces.*/
- while(*p==' ')p++;
+ while (*p == ' ')p++;
/*If that's all we have, stop.*/
- if(p[0]=='\0')break;
+ if (p[0] == '\0')break;
/*Find the end of this tag.*/
- for(q=p+1;*q!='\0'&&*q!=' ';q++);
+ for (q = p + 1; *q != '\0' && *q != ' '; q++);
/*Process the tag.*/
- switch(p[0]){
- case 'W':{
- if(sscanf(p+1,"%d",&_y4m->pic_w)!=1)return -1;
- got_w=1;
- }break;
- case 'H':{
- if(sscanf(p+1,"%d",&_y4m->pic_h)!=1)return -1;
- got_h=1;
- }break;
- case 'F':{
- if(sscanf(p+1,"%d:%d",&_y4m->fps_n,&_y4m->fps_d)!=2){
+ switch (p[0]) {
+ case 'W': {
+ if (sscanf(p + 1, "%d", &_y4m->pic_w) != 1)return -1;
+ got_w = 1;
+ }
+ break;
+ case 'H': {
+ if (sscanf(p + 1, "%d", &_y4m->pic_h) != 1)return -1;
+ got_h = 1;
+ }
+ break;
+ case 'F': {
+ if (sscanf(p + 1, "%d:%d", &_y4m->fps_n, &_y4m->fps_d) != 2) {
return -1;
}
- got_fps=1;
- }break;
- case 'I':{
- _y4m->interlace=p[1];
- got_interlace=1;
- }break;
- case 'A':{
- if(sscanf(p+1,"%d:%d",&_y4m->par_n,&_y4m->par_d)!=2){
+ got_fps = 1;
+ }
+ break;
+ case 'I': {
+ _y4m->interlace = p[1];
+ got_interlace = 1;
+ }
+ break;
+ case 'A': {
+ if (sscanf(p + 1, "%d:%d", &_y4m->par_n, &_y4m->par_d) != 2) {
return -1;
}
- got_par=1;
- }break;
- case 'C':{
- if(q-p>16)return -1;
- memcpy(_y4m->chroma_type,p+1,q-p-1);
- _y4m->chroma_type[q-p-1]='\0';
- got_chroma=1;
- }break;
+ got_par = 1;
+ }
+ break;
+ case 'C': {
+ if (q - p > 16)return -1;
+ memcpy(_y4m->chroma_type, p + 1, q - p - 1);
+ _y4m->chroma_type[q - p - 1] = '\0';
+ got_chroma = 1;
+ }
+ break;
/*Ignore unknown tags.*/
}
}
- if(!got_w||!got_h||!got_fps)return -1;
- if(!got_interlace)_y4m->interlace='?';
- if(!got_par)_y4m->par_n=_y4m->par_d=0;
+ if (!got_w || !got_h || !got_fps)return -1;
+ if (!got_interlace)_y4m->interlace = '?';
+ if (!got_par)_y4m->par_n = _y4m->par_d = 0;
/*Chroma-type is not specified in older files, e.g., those generated by
mplayer.*/
- if(!got_chroma)strcpy(_y4m->chroma_type,"420");
+ if (!got_chroma)strcpy(_y4m->chroma_type, "420");
return 0;
}
lines, and they are vertically co-sited with the luma samples in both the
mpeg2 and jpeg cases (thus requiring no vertical resampling).*/
static void y4m_42xmpeg2_42xjpeg_helper(unsigned char *_dst,
- const unsigned char *_src,int _c_w,int _c_h){
+ const unsigned char *_src, int _c_w, int _c_h) {
int y;
int x;
- for(y=0;y<_c_h;y++){
+ for (y = 0; y < _c_h; y++) {
/*Filter: [4 -17 114 35 -9 1]/128, derived from a 6-tap Lanczos
window.*/
- for(x=0;x<OC_MINI(_c_w,2);x++){
- _dst[x]=(unsigned char)OC_CLAMPI(0,(4*_src[0]-17*_src[OC_MAXI(x-1,0)]+
- 114*_src[x]+35*_src[OC_MINI(x+1,_c_w-1)]-9*_src[OC_MINI(x+2,_c_w-1)]+
- _src[OC_MINI(x+3,_c_w-1)]+64)>>7,255);
+ for (x = 0; x < OC_MINI(_c_w, 2); x++) {
+ _dst[x] = (unsigned char)OC_CLAMPI(0, (4 * _src[0] - 17 * _src[OC_MAXI(x - 1, 0)] +
+ 114 * _src[x] + 35 * _src[OC_MINI(x + 1, _c_w - 1)] - 9 * _src[OC_MINI(x + 2, _c_w - 1)] +
+ _src[OC_MINI(x + 3, _c_w - 1)] + 64) >> 7, 255);
}
- for(;x<_c_w-3;x++){
- _dst[x]=(unsigned char)OC_CLAMPI(0,(4*_src[x-2]-17*_src[x-1]+
- 114*_src[x]+35*_src[x+1]-9*_src[x+2]+_src[x+3]+64)>>7,255);
+ for (; x < _c_w - 3; x++) {
+ _dst[x] = (unsigned char)OC_CLAMPI(0, (4 * _src[x - 2] - 17 * _src[x - 1] +
+ 114 * _src[x] + 35 * _src[x + 1] - 9 * _src[x + 2] + _src[x + 3] + 64) >> 7, 255);
}
- for(;x<_c_w;x++){
- _dst[x]=(unsigned char)OC_CLAMPI(0,(4*_src[x-2]-17*_src[x-1]+
- 114*_src[x]+35*_src[OC_MINI(x+1,_c_w-1)]-9*_src[OC_MINI(x+2,_c_w-1)]+
- _src[_c_w-1]+64)>>7,255);
+ for (; x < _c_w; x++) {
+ _dst[x] = (unsigned char)OC_CLAMPI(0, (4 * _src[x - 2] - 17 * _src[x - 1] +
+ 114 * _src[x] + 35 * _src[OC_MINI(x + 1, _c_w - 1)] - 9 * _src[OC_MINI(x + 2, _c_w - 1)] +
+ _src[_c_w - 1] + 64) >> 7, 255);
}
- _dst+=_c_w;
- _src+=_c_w;
+ _dst += _c_w;
+ _src += _c_w;
}
}
/*Handles both 422 and 420mpeg2 to 422jpeg and 420jpeg, respectively.*/
-static void y4m_convert_42xmpeg2_42xjpeg(y4m_input *_y4m,unsigned char *_dst,
- unsigned char *_aux){
+static void y4m_convert_42xmpeg2_42xjpeg(y4m_input *_y4m, unsigned char *_dst,
+ unsigned char *_aux) {
int c_w;
int c_h;
int c_sz;
int pli;
/*Skip past the luma data.*/
- _dst+=_y4m->pic_w*_y4m->pic_h;
+ _dst += _y4m->pic_w * _y4m->pic_h;
/*Compute the size of each chroma plane.*/
- c_w=(_y4m->pic_w+_y4m->dst_c_dec_h-1)/_y4m->dst_c_dec_h;
- c_h=(_y4m->pic_h+_y4m->dst_c_dec_v-1)/_y4m->dst_c_dec_v;
- c_sz=c_w*c_h;
- for(pli=1;pli<3;pli++){
- y4m_42xmpeg2_42xjpeg_helper(_dst,_aux,c_w,c_h);
- _dst+=c_sz;
- _aux+=c_sz;
+ c_w = (_y4m->pic_w + _y4m->dst_c_dec_h - 1) / _y4m->dst_c_dec_h;
+ c_h = (_y4m->pic_h + _y4m->dst_c_dec_v - 1) / _y4m->dst_c_dec_v;
+ c_sz = c_w * c_h;
+ for (pli = 1; pli < 3; pli++) {
+ y4m_42xmpeg2_42xjpeg_helper(_dst, _aux, c_w, c_h);
+ _dst += c_sz;
+ _aux += c_sz;
}
}
the chroma plane's resolution) to the right.
Then we use another filter to move the C_r location down one quarter pixel,
and the C_b location up one quarter pixel.*/
-static void y4m_convert_42xpaldv_42xjpeg(y4m_input *_y4m,unsigned char *_dst,
- unsigned char *_aux){
+static void y4m_convert_42xpaldv_42xjpeg(y4m_input *_y4m, unsigned char *_dst,
+ unsigned char *_aux) {
unsigned char *tmp;
int c_w;
int c_h;
int y;
int x;
/*Skip past the luma data.*/
- _dst+=_y4m->pic_w*_y4m->pic_h;
+ _dst += _y4m->pic_w * _y4m->pic_h;
/*Compute the size of each chroma plane.*/
- c_w=(_y4m->pic_w+1)/2;
- c_h=(_y4m->pic_h+_y4m->dst_c_dec_h-1)/_y4m->dst_c_dec_h;
- c_sz=c_w*c_h;
- tmp=_aux+2*c_sz;
- for(pli=1;pli<3;pli++){
+ c_w = (_y4m->pic_w + 1) / 2;
+ c_h = (_y4m->pic_h + _y4m->dst_c_dec_h - 1) / _y4m->dst_c_dec_h;
+ c_sz = c_w * c_h;
+ tmp = _aux + 2 * c_sz;
+ for (pli = 1; pli < 3; pli++) {
/*First do the horizontal re-sampling.
This is the same as the mpeg2 case, except that after the horizontal
case, we need to apply a second vertical filter.*/
- y4m_42xmpeg2_42xjpeg_helper(tmp,_aux,c_w,c_h);
- _aux+=c_sz;
- switch(pli){
- case 1:{
+ y4m_42xmpeg2_42xjpeg_helper(tmp, _aux, c_w, c_h);
+ _aux += c_sz;
+ switch (pli) {
+ case 1: {
/*Slide C_b up a quarter-pel.
This is the same filter used above, but in the other order.*/
- for(x=0;x<c_w;x++){
- for(y=0;y<OC_MINI(c_h,3);y++){
- _dst[y*c_w]=(unsigned char)OC_CLAMPI(0,(tmp[0]
- -9*tmp[OC_MAXI(y-2,0)*c_w]+35*tmp[OC_MAXI(y-1,0)*c_w]
- +114*tmp[y*c_w]-17*tmp[OC_MINI(y+1,c_h-1)*c_w]
- +4*tmp[OC_MINI(y+2,c_h-1)*c_w]+64)>>7,255);
+ for (x = 0; x < c_w; x++) {
+ for (y = 0; y < OC_MINI(c_h, 3); y++) {
+ _dst[y * c_w] = (unsigned char)OC_CLAMPI(0, (tmp[0]
+ - 9 * tmp[OC_MAXI(y - 2, 0) * c_w] + 35 * tmp[OC_MAXI(y - 1, 0) * c_w]
+ + 114 * tmp[y * c_w] - 17 * tmp[OC_MINI(y + 1, c_h - 1) * c_w]
+ + 4 * tmp[OC_MINI(y + 2, c_h - 1) * c_w] + 64) >> 7, 255);
}
- for(;y<c_h-2;y++){
- _dst[y*c_w]=(unsigned char)OC_CLAMPI(0,(tmp[(y-3)*c_w]
- -9*tmp[(y-2)*c_w]+35*tmp[(y-1)*c_w]+114*tmp[y*c_w]
- -17*tmp[(y+1)*c_w]+4*tmp[(y+2)*c_w]+64)>>7,255);
+ for (; y < c_h - 2; y++) {
+ _dst[y * c_w] = (unsigned char)OC_CLAMPI(0, (tmp[(y - 3) * c_w]
+ - 9 * tmp[(y - 2) * c_w] + 35 * tmp[(y - 1) * c_w] + 114 * tmp[y * c_w]
+ - 17 * tmp[(y + 1) * c_w] + 4 * tmp[(y + 2) * c_w] + 64) >> 7, 255);
}
- for(;y<c_h;y++){
- _dst[y*c_w]=(unsigned char)OC_CLAMPI(0,(tmp[(y-3)*c_w]
- -9*tmp[(y-2)*c_w]+35*tmp[(y-1)*c_w]+114*tmp[y*c_w]
- -17*tmp[OC_MINI(y+1,c_h-1)*c_w]+4*tmp[(c_h-1)*c_w]+64)>>7,255);
+ for (; y < c_h; y++) {
+ _dst[y * c_w] = (unsigned char)OC_CLAMPI(0, (tmp[(y - 3) * c_w]
+ - 9 * tmp[(y - 2) * c_w] + 35 * tmp[(y - 1) * c_w] + 114 * tmp[y * c_w]
+ - 17 * tmp[OC_MINI(y + 1, c_h - 1) * c_w] + 4 * tmp[(c_h - 1) * c_w] + 64) >> 7, 255);
}
_dst++;
tmp++;
}
- _dst+=c_sz-c_w;
- tmp-=c_w;
- }break;
- case 2:{
+ _dst += c_sz - c_w;
+ tmp -= c_w;
+ }
+ break;
+ case 2: {
/*Slide C_r down a quarter-pel.
This is the same as the horizontal filter.*/
- for(x=0;x<c_w;x++){
- for(y=0;y<OC_MINI(c_h,2);y++){
- _dst[y*c_w]=(unsigned char)OC_CLAMPI(0,(4*tmp[0]
- -17*tmp[OC_MAXI(y-1,0)*c_w]+114*tmp[y*c_w]
- +35*tmp[OC_MINI(y+1,c_h-1)*c_w]-9*tmp[OC_MINI(y+2,c_h-1)*c_w]
- +tmp[OC_MINI(y+3,c_h-1)*c_w]+64)>>7,255);
+ for (x = 0; x < c_w; x++) {
+ for (y = 0; y < OC_MINI(c_h, 2); y++) {
+ _dst[y * c_w] = (unsigned char)OC_CLAMPI(0, (4 * tmp[0]
+ - 17 * tmp[OC_MAXI(y - 1, 0) * c_w] + 114 * tmp[y * c_w]
+ + 35 * tmp[OC_MINI(y + 1, c_h - 1) * c_w] - 9 * tmp[OC_MINI(y + 2, c_h - 1) * c_w]
+ + tmp[OC_MINI(y + 3, c_h - 1) * c_w] + 64) >> 7, 255);
}
- for(;y<c_h-3;y++){
- _dst[y*c_w]=(unsigned char)OC_CLAMPI(0,(4*tmp[(y-2)*c_w]
- -17*tmp[(y-1)*c_w]+114*tmp[y*c_w]+35*tmp[(y+1)*c_w]
- -9*tmp[(y+2)*c_w]+tmp[(y+3)*c_w]+64)>>7,255);
+ for (; y < c_h - 3; y++) {
+ _dst[y * c_w] = (unsigned char)OC_CLAMPI(0, (4 * tmp[(y - 2) * c_w]
+ - 17 * tmp[(y - 1) * c_w] + 114 * tmp[y * c_w] + 35 * tmp[(y + 1) * c_w]
+ - 9 * tmp[(y + 2) * c_w] + tmp[(y + 3) * c_w] + 64) >> 7, 255);
}
- for(;y<c_h;y++){
- _dst[y*c_w]=(unsigned char)OC_CLAMPI(0,(4*tmp[(y-2)*c_w]
- -17*tmp[(y-1)*c_w]+114*tmp[y*c_w]+35*tmp[OC_MINI(y+1,c_h-1)*c_w]
- -9*tmp[OC_MINI(y+2,c_h-1)*c_w]+tmp[(c_h-1)*c_w]+64)>>7,255);
+ for (; y < c_h; y++) {
+ _dst[y * c_w] = (unsigned char)OC_CLAMPI(0, (4 * tmp[(y - 2) * c_w]
+ - 17 * tmp[(y - 1) * c_w] + 114 * tmp[y * c_w] + 35 * tmp[OC_MINI(y + 1, c_h - 1) * c_w]
+ - 9 * tmp[OC_MINI(y + 2, c_h - 1) * c_w] + tmp[(c_h - 1) * c_w] + 64) >> 7, 255);
}
_dst++;
tmp++;
}
- }break;
+ }
+ break;
}
/*For actual interlaced material, this would have to be done separately on
each field, and the shift amounts would be different.
/*Perform vertical filtering to reduce a single plane from 4:2:2 to 4:2:0.
This is used as a helper by several converation routines.*/
static void y4m_422jpeg_420jpeg_helper(unsigned char *_dst,
- const unsigned char *_src,int _c_w,int _c_h){
+ const unsigned char *_src, int _c_w, int _c_h) {
int y;
int x;
/*Filter: [3 -17 78 78 -17 3]/128, derived from a 6-tap Lanczos window.*/
- for(x=0;x<_c_w;x++){
- for(y=0;y<OC_MINI(_c_h,2);y+=2){
- _dst[(y>>1)*_c_w]=OC_CLAMPI(0,(64*_src[0]
- +78*_src[OC_MINI(1,_c_h-1)*_c_w]
- -17*_src[OC_MINI(2,_c_h-1)*_c_w]
- +3*_src[OC_MINI(3,_c_h-1)*_c_w]+64)>>7,255);
+ for (x = 0; x < _c_w; x++) {
+ for (y = 0; y < OC_MINI(_c_h, 2); y += 2) {
+ _dst[(y >> 1)*_c_w] = OC_CLAMPI(0, (64 * _src[0]
+ + 78 * _src[OC_MINI(1, _c_h - 1) * _c_w]
+ - 17 * _src[OC_MINI(2, _c_h - 1) * _c_w]
+ + 3 * _src[OC_MINI(3, _c_h - 1) * _c_w] + 64) >> 7, 255);
}
- for(;y<_c_h-3;y+=2){
- _dst[(y>>1)*_c_w]=OC_CLAMPI(0,(3*(_src[(y-2)*_c_w]+_src[(y+3)*_c_w])
- -17*(_src[(y-1)*_c_w]+_src[(y+2)*_c_w])
- +78*(_src[y*_c_w]+_src[(y+1)*_c_w])+64)>>7,255);
+ for (; y < _c_h - 3; y += 2) {
+ _dst[(y >> 1)*_c_w] = OC_CLAMPI(0, (3 * (_src[(y - 2) * _c_w] + _src[(y + 3) * _c_w])
+ - 17 * (_src[(y - 1) * _c_w] + _src[(y + 2) * _c_w])
+ + 78 * (_src[y * _c_w] + _src[(y + 1) * _c_w]) + 64) >> 7, 255);
}
- for(;y<_c_h;y+=2){
- _dst[(y>>1)*_c_w]=OC_CLAMPI(0,(3*(_src[(y-2)*_c_w]
- +_src[(_c_h-1)*_c_w])-17*(_src[(y-1)*_c_w]
- +_src[OC_MINI(y+2,_c_h-1)*_c_w])
- +78*(_src[y*_c_w]+_src[OC_MINI(y+1,_c_h-1)*_c_w])+64)>>7,255);
+ for (; y < _c_h; y += 2) {
+ _dst[(y >> 1)*_c_w] = OC_CLAMPI(0, (3 * (_src[(y - 2) * _c_w]
+ + _src[(_c_h - 1) * _c_w]) - 17 * (_src[(y - 1) * _c_w]
+ + _src[OC_MINI(y + 2, _c_h - 1) * _c_w])
+ + 78 * (_src[y * _c_w] + _src[OC_MINI(y + 1, _c_h - 1) * _c_w]) + 64) >> 7, 255);
}
_src++;
_dst++;
We use a resampling filter to decimate the chroma planes by two in the
vertical direction.*/
-static void y4m_convert_422jpeg_420jpeg(y4m_input *_y4m,unsigned char *_dst,
- unsigned char *_aux){
+static void y4m_convert_422jpeg_420jpeg(y4m_input *_y4m, unsigned char *_dst,
+ unsigned char *_aux) {
int c_w;
int c_h;
int c_sz;
int dst_c_sz;
int pli;
/*Skip past the luma data.*/
- _dst+=_y4m->pic_w*_y4m->pic_h;
+ _dst += _y4m->pic_w * _y4m->pic_h;
/*Compute the size of each chroma plane.*/
- c_w=(_y4m->pic_w+_y4m->src_c_dec_h-1)/_y4m->src_c_dec_h;
- c_h=_y4m->pic_h;
- dst_c_w=(_y4m->pic_w+_y4m->dst_c_dec_h-1)/_y4m->dst_c_dec_h;
- dst_c_h=(_y4m->pic_h+_y4m->dst_c_dec_v-1)/_y4m->dst_c_dec_v;
- c_sz=c_w*c_h;
- dst_c_sz=dst_c_w*dst_c_h;
- for(pli=1;pli<3;pli++){
- y4m_422jpeg_420jpeg_helper(_dst,_aux,c_w,c_h);
- _aux+=c_sz;
- _dst+=dst_c_sz;
+ c_w = (_y4m->pic_w + _y4m->src_c_dec_h - 1) / _y4m->src_c_dec_h;
+ c_h = _y4m->pic_h;
+ dst_c_w = (_y4m->pic_w + _y4m->dst_c_dec_h - 1) / _y4m->dst_c_dec_h;
+ dst_c_h = (_y4m->pic_h + _y4m->dst_c_dec_v - 1) / _y4m->dst_c_dec_v;
+ c_sz = c_w * c_h;
+ dst_c_sz = dst_c_w * dst_c_h;
+ for (pli = 1; pli < 3; pli++) {
+ y4m_422jpeg_420jpeg_helper(_dst, _aux, c_w, c_h);
+ _aux += c_sz;
+ _dst += dst_c_sz;
}
}
pixel (at the original chroma resolution) to the right.
Then we use a second resampling filter to decimate the chroma planes by two
in the vertical direction.*/
-static void y4m_convert_422_420jpeg(y4m_input *_y4m,unsigned char *_dst,
- unsigned char *_aux){
+static void y4m_convert_422_420jpeg(y4m_input *_y4m, unsigned char *_dst,
+ unsigned char *_aux) {
unsigned char *tmp;
int c_w;
int c_h;
int dst_c_sz;
int pli;
/*Skip past the luma data.*/
- _dst+=_y4m->pic_w*_y4m->pic_h;
+ _dst += _y4m->pic_w * _y4m->pic_h;
/*Compute the size of each chroma plane.*/
- c_w=(_y4m->pic_w+_y4m->src_c_dec_h-1)/_y4m->src_c_dec_h;
- c_h=_y4m->pic_h;
- dst_c_h=(_y4m->pic_h+_y4m->dst_c_dec_v-1)/_y4m->dst_c_dec_v;
- c_sz=c_w*c_h;
- dst_c_sz=c_w*dst_c_h;
- tmp=_aux+2*c_sz;
- for(pli=1;pli<3;pli++){
+ c_w = (_y4m->pic_w + _y4m->src_c_dec_h - 1) / _y4m->src_c_dec_h;
+ c_h = _y4m->pic_h;
+ dst_c_h = (_y4m->pic_h + _y4m->dst_c_dec_v - 1) / _y4m->dst_c_dec_v;
+ c_sz = c_w * c_h;
+ dst_c_sz = c_w * dst_c_h;
+ tmp = _aux + 2 * c_sz;
+ for (pli = 1; pli < 3; pli++) {
/*In reality, the horizontal and vertical steps could be pipelined, for
less memory consumption and better cache performance, but we do them
separately for simplicity.*/
/*First do horizontal filtering (convert to 422jpeg)*/
- y4m_42xmpeg2_42xjpeg_helper(tmp,_aux,c_w,c_h);
+ y4m_42xmpeg2_42xjpeg_helper(tmp, _aux, c_w, c_h);
/*Now do the vertical filtering.*/
- y4m_422jpeg_420jpeg_helper(_dst,tmp,c_w,c_h);
- _aux+=c_sz;
- _dst+=dst_c_sz;
+ y4m_422jpeg_420jpeg_helper(_dst, tmp, c_w, c_h);
+ _aux += c_sz;
+ _dst += dst_c_sz;
}
}
right.
Then we use another filter to decimate the planes by 2 in the vertical
direction.*/
-static void y4m_convert_411_420jpeg(y4m_input *_y4m,unsigned char *_dst,
- unsigned char *_aux){
+static void y4m_convert_411_420jpeg(y4m_input *_y4m, unsigned char *_dst,
+ unsigned char *_aux) {
unsigned char *tmp;
int c_w;
int c_h;
int y;
int x;
/*Skip past the luma data.*/
- _dst+=_y4m->pic_w*_y4m->pic_h;
+ _dst += _y4m->pic_w * _y4m->pic_h;
/*Compute the size of each chroma plane.*/
- c_w=(_y4m->pic_w+_y4m->src_c_dec_h-1)/_y4m->src_c_dec_h;
- c_h=_y4m->pic_h;
- dst_c_w=(_y4m->pic_w+_y4m->dst_c_dec_h-1)/_y4m->dst_c_dec_h;
- dst_c_h=(_y4m->pic_h+_y4m->dst_c_dec_v-1)/_y4m->dst_c_dec_v;
- c_sz=c_w*c_h;
- dst_c_sz=dst_c_w*dst_c_h;
- tmp_sz=dst_c_w*c_h;
- tmp=_aux+2*c_sz;
- for(pli=1;pli<3;pli++){
+ c_w = (_y4m->pic_w + _y4m->src_c_dec_h - 1) / _y4m->src_c_dec_h;
+ c_h = _y4m->pic_h;
+ dst_c_w = (_y4m->pic_w + _y4m->dst_c_dec_h - 1) / _y4m->dst_c_dec_h;
+ dst_c_h = (_y4m->pic_h + _y4m->dst_c_dec_v - 1) / _y4m->dst_c_dec_v;
+ c_sz = c_w * c_h;
+ dst_c_sz = dst_c_w * dst_c_h;
+ tmp_sz = dst_c_w * c_h;
+ tmp = _aux + 2 * c_sz;
+ for (pli = 1; pli < 3; pli++) {
/*In reality, the horizontal and vertical steps could be pipelined, for
less memory consumption and better cache performance, but we do them
separately for simplicity.*/
/*First do horizontal filtering (convert to 422jpeg)*/
- for(y=0;y<c_h;y++){
+ for (y = 0; y < c_h; y++) {
/*Filters: [1 110 18 -1]/128 and [-3 50 86 -5]/128, both derived from a
4-tap Mitchell window.*/
- for(x=0;x<OC_MINI(c_w,1);x++){
- tmp[x<<1]=(unsigned char)OC_CLAMPI(0,(111*_aux[0]
- +18*_aux[OC_MINI(1,c_w-1)]-_aux[OC_MINI(2,c_w-1)]+64)>>7,255);
- tmp[x<<1|1]=(unsigned char)OC_CLAMPI(0,(47*_aux[0]
- +86*_aux[OC_MINI(1,c_w-1)]-5*_aux[OC_MINI(2,c_w-1)]+64)>>7,255);
+ for (x = 0; x < OC_MINI(c_w, 1); x++) {
+ tmp[x << 1] = (unsigned char)OC_CLAMPI(0, (111 * _aux[0]
+ + 18 * _aux[OC_MINI(1, c_w - 1)] - _aux[OC_MINI(2, c_w - 1)] + 64) >> 7, 255);
+ tmp[x << 1 | 1] = (unsigned char)OC_CLAMPI(0, (47 * _aux[0]
+ + 86 * _aux[OC_MINI(1, c_w - 1)] - 5 * _aux[OC_MINI(2, c_w - 1)] + 64) >> 7, 255);
}
- for(;x<c_w-2;x++){
- tmp[x<<1]=(unsigned char)OC_CLAMPI(0,(_aux[x-1]+110*_aux[x]
- +18*_aux[x+1]-_aux[x+2]+64)>>7,255);
- tmp[x<<1|1]=(unsigned char)OC_CLAMPI(0,(-3*_aux[x-1]+50*_aux[x]
- +86*_aux[x+1]-5*_aux[x+2]+64)>>7,255);
+ for (; x < c_w - 2; x++) {
+ tmp[x << 1] = (unsigned char)OC_CLAMPI(0, (_aux[x - 1] + 110 * _aux[x]
+ + 18 * _aux[x + 1] - _aux[x + 2] + 64) >> 7, 255);
+ tmp[x << 1 | 1] = (unsigned char)OC_CLAMPI(0, (-3 * _aux[x - 1] + 50 * _aux[x]
+ + 86 * _aux[x + 1] - 5 * _aux[x + 2] + 64) >> 7, 255);
}
- for(;x<c_w;x++){
- tmp[x<<1]=(unsigned char)OC_CLAMPI(0,(_aux[x-1]+110*_aux[x]
- +18*_aux[OC_MINI(x+1,c_w-1)]-_aux[c_w-1]+64)>>7,255);
- if((x<<1|1)<dst_c_w){
- tmp[x<<1|1]=(unsigned char)OC_CLAMPI(0,(-3*_aux[x-1]+50*_aux[x]
- +86*_aux[OC_MINI(x+1,c_w-1)]-5*_aux[c_w-1]+64)>>7,255);
+ for (; x < c_w; x++) {
+ tmp[x << 1] = (unsigned char)OC_CLAMPI(0, (_aux[x - 1] + 110 * _aux[x]
+ + 18 * _aux[OC_MINI(x + 1, c_w - 1)] - _aux[c_w - 1] + 64) >> 7, 255);
+ if ((x << 1 | 1) < dst_c_w) {
+ tmp[x << 1 | 1] = (unsigned char)OC_CLAMPI(0, (-3 * _aux[x - 1] + 50 * _aux[x]
+ + 86 * _aux[OC_MINI(x + 1, c_w - 1)] - 5 * _aux[c_w - 1] + 64) >> 7, 255);
}
}
- tmp+=dst_c_w;
- _aux+=c_w;
+ tmp += dst_c_w;
+ _aux += c_w;
}
- tmp-=tmp_sz;
+ tmp -= tmp_sz;
/*Now do the vertical filtering.*/
- y4m_422jpeg_420jpeg_helper(_dst,tmp,dst_c_w,c_h);
- _dst+=dst_c_sz;
+ y4m_422jpeg_420jpeg_helper(_dst, tmp, dst_c_w, c_h);
+ _dst += dst_c_sz;
}
}
/*Convert 444 to 420jpeg.*/
-static void y4m_convert_444_420jpeg(y4m_input *_y4m,unsigned char *_dst,
- unsigned char *_aux){
+static void y4m_convert_444_420jpeg(y4m_input *_y4m, unsigned char *_dst,
+ unsigned char *_aux) {
unsigned char *tmp;
int c_w;
int c_h;
int y;
int x;
/*Skip past the luma data.*/
- _dst+=_y4m->pic_w*_y4m->pic_h;
+ _dst += _y4m->pic_w * _y4m->pic_h;
/*Compute the size of each chroma plane.*/
- c_w=(_y4m->pic_w+_y4m->src_c_dec_h-1)/_y4m->src_c_dec_h;
- c_h=_y4m->pic_h;
- dst_c_w=(_y4m->pic_w+_y4m->dst_c_dec_h-1)/_y4m->dst_c_dec_h;
- dst_c_h=(_y4m->pic_h+_y4m->dst_c_dec_v-1)/_y4m->dst_c_dec_v;
- c_sz=c_w*c_h;
- dst_c_sz=dst_c_w*dst_c_h;
- tmp_sz=dst_c_w*c_h;
- tmp=_aux+2*c_sz;
- for(pli=1;pli<3;pli++){
+ c_w = (_y4m->pic_w + _y4m->src_c_dec_h - 1) / _y4m->src_c_dec_h;
+ c_h = _y4m->pic_h;
+ dst_c_w = (_y4m->pic_w + _y4m->dst_c_dec_h - 1) / _y4m->dst_c_dec_h;
+ dst_c_h = (_y4m->pic_h + _y4m->dst_c_dec_v - 1) / _y4m->dst_c_dec_v;
+ c_sz = c_w * c_h;
+ dst_c_sz = dst_c_w * dst_c_h;
+ tmp_sz = dst_c_w * c_h;
+ tmp = _aux + 2 * c_sz;
+ for (pli = 1; pli < 3; pli++) {
/*Filter: [3 -17 78 78 -17 3]/128, derived from a 6-tap Lanczos window.*/
- for(y=0;y<c_h;y++){
- for(x=0;x<OC_MINI(c_w,2);x+=2){
- tmp[x>>1]=OC_CLAMPI(0,(64*_aux[0]+78*_aux[OC_MINI(1,c_w-1)]
- -17*_aux[OC_MINI(2,c_w-1)]
- +3*_aux[OC_MINI(3,c_w-1)]+64)>>7,255);
+ for (y = 0; y < c_h; y++) {
+ for (x = 0; x < OC_MINI(c_w, 2); x += 2) {
+ tmp[x >> 1] = OC_CLAMPI(0, (64 * _aux[0] + 78 * _aux[OC_MINI(1, c_w - 1)]
+ - 17 * _aux[OC_MINI(2, c_w - 1)]
+ + 3 * _aux[OC_MINI(3, c_w - 1)] + 64) >> 7, 255);
}
- for(;x<c_w-3;x+=2){
- tmp[x>>1]=OC_CLAMPI(0,(3*(_aux[x-2]+_aux[x+3])
- -17*(_aux[x-1]+_aux[x+2])+78*(_aux[x]+_aux[x+1])+64)>>7,255);
+ for (; x < c_w - 3; x += 2) {
+ tmp[x >> 1] = OC_CLAMPI(0, (3 * (_aux[x - 2] + _aux[x + 3])
+ - 17 * (_aux[x - 1] + _aux[x + 2]) + 78 * (_aux[x] + _aux[x + 1]) + 64) >> 7, 255);
}
- for(;x<c_w;x+=2){
- tmp[x>>1]=OC_CLAMPI(0,(3*(_aux[x-2]+_aux[c_w-1])-
- 17*(_aux[x-1]+_aux[OC_MINI(x+2,c_w-1)])+
- 78*(_aux[x]+_aux[OC_MINI(x+1,c_w-1)])+64)>>7,255);
+ for (; x < c_w; x += 2) {
+ tmp[x >> 1] = OC_CLAMPI(0, (3 * (_aux[x - 2] + _aux[c_w - 1]) -
+ 17 * (_aux[x - 1] + _aux[OC_MINI(x + 2, c_w - 1)]) +
+ 78 * (_aux[x] + _aux[OC_MINI(x + 1, c_w - 1)]) + 64) >> 7, 255);
}
- tmp+=dst_c_w;
- _aux+=c_w;
+ tmp += dst_c_w;
+ _aux += c_w;
}
- tmp-=tmp_sz;
+ tmp -= tmp_sz;
/*Now do the vertical filtering.*/
- y4m_422jpeg_420jpeg_helper(_dst,tmp,dst_c_w,c_h);
- _dst+=dst_c_sz;
+ y4m_422jpeg_420jpeg_helper(_dst, tmp, dst_c_w, c_h);
+ _dst += dst_c_sz;
}
}
/*The image is padded with empty chroma components at 4:2:0.*/
-static void y4m_convert_mono_420jpeg(y4m_input *_y4m,unsigned char *_dst,
- unsigned char *_aux){
+static void y4m_convert_mono_420jpeg(y4m_input *_y4m, unsigned char *_dst,
+ unsigned char *_aux) {
int c_sz;
- _dst+=_y4m->pic_w*_y4m->pic_h;
- c_sz=((_y4m->pic_w+_y4m->dst_c_dec_h-1)/_y4m->dst_c_dec_h)*
- ((_y4m->pic_h+_y4m->dst_c_dec_v-1)/_y4m->dst_c_dec_v);
- memset(_dst,128,c_sz*2);
+ (void)_aux;
+ _dst += _y4m->pic_w * _y4m->pic_h;
+ c_sz = ((_y4m->pic_w + _y4m->dst_c_dec_h - 1) / _y4m->dst_c_dec_h) *
+ ((_y4m->pic_h + _y4m->dst_c_dec_v - 1) / _y4m->dst_c_dec_v);
+ memset(_dst, 128, c_sz * 2);
}
/*No conversion function needed.*/
-static void y4m_convert_null(y4m_input *_y4m,unsigned char *_dst,
- unsigned char *_aux){
+static void y4m_convert_null(y4m_input *_y4m, unsigned char *_dst,
+ unsigned char *_aux) {
+ (void)_y4m;
+ (void)_dst;
+ (void)_aux;
}
-int y4m_input_open(y4m_input *_y4m,FILE *_fin,char *_skip,int _nskip){
- char buffer[80];
+int y4m_input_open(y4m_input *_y4m, FILE *_fin, char *_skip, int _nskip,
+ int only_420) {
+ char buffer[80] = {0};
int ret;
int i;
/*Read until newline, or 80 cols, whichever happens first.*/
- for(i=0;i<79;i++){
- if(_nskip>0){
- buffer[i]=*_skip++;
+ for (i = 0; i < 79; i++) {
+ if (_nskip > 0) {
+ buffer[i] = *_skip++;
_nskip--;
+ } else {
+ if (!file_read(buffer + i, 1, _fin)) return -1;
}
- else{
- ret=(int)fread(buffer+i,1,1,_fin);
- if(ret<1)return -1;
- }
- if(buffer[i]=='\n')break;
+ if (buffer[i] == '\n')break;
}
/*We skipped too much header data.*/
- if(_nskip>0)return -1;
- if(i==79){
- fprintf(stderr,"Error parsing header; not a YUV2MPEG2 file?\n");
+ if (_nskip > 0)return -1;
+ if (i == 79) {
+ fprintf(stderr, "Error parsing header; not a YUV2MPEG2 file?\n");
return -1;
}
- buffer[i]='\0';
- if(memcmp(buffer,"YUV4MPEG",8)){
- fprintf(stderr,"Incomplete magic for YUV4MPEG file.\n");
+ buffer[i] = '\0';
+ if (memcmp(buffer, "YUV4MPEG", 8)) {
+ fprintf(stderr, "Incomplete magic for YUV4MPEG file.\n");
return -1;
}
- if(buffer[8]!='2'){
- fprintf(stderr,"Incorrect YUV input file version; YUV4MPEG2 required.\n");
+ if (buffer[8] != '2') {
+ fprintf(stderr, "Incorrect YUV input file version; YUV4MPEG2 required.\n");
}
- ret=y4m_parse_tags(_y4m,buffer+5);
- if(ret<0){
- fprintf(stderr,"Error parsing YUV4MPEG2 header.\n");
+ ret = y4m_parse_tags(_y4m, buffer + 5);
+ if (ret < 0) {
+ fprintf(stderr, "Error parsing YUV4MPEG2 header.\n");
return ret;
}
- if(_y4m->interlace=='?'){
- fprintf(stderr,"Warning: Input video interlacing format unknown; "
- "assuming progressive scan.\n");
- }
- else if(_y4m->interlace!='p'){
- fprintf(stderr,"Input video is interlaced; "
- "Only progressive scan handled.\n");
+ if (_y4m->interlace == '?') {
+ fprintf(stderr, "Warning: Input video interlacing format unknown; "
+ "assuming progressive scan.\n");
+ } else if (_y4m->interlace != 'p') {
+ fprintf(stderr, "Input video is interlaced; "
+ "Only progressive scan handled.\n");
return -1;
}
- if(strcmp(_y4m->chroma_type,"420")==0||
- strcmp(_y4m->chroma_type,"420jpeg")==0){
- _y4m->src_c_dec_h=_y4m->dst_c_dec_h=_y4m->src_c_dec_v=_y4m->dst_c_dec_v=2;
- _y4m->dst_buf_read_sz=_y4m->pic_w*_y4m->pic_h
- +2*((_y4m->pic_w+1)/2)*((_y4m->pic_h+1)/2);
- /*Natively supported: no conversion required.*/
- _y4m->aux_buf_sz=_y4m->aux_buf_read_sz=0;
- _y4m->convert=y4m_convert_null;
- }
- else if(strcmp(_y4m->chroma_type,"420mpeg2")==0){
- _y4m->src_c_dec_h=_y4m->dst_c_dec_h=_y4m->src_c_dec_v=_y4m->dst_c_dec_v=2;
- _y4m->dst_buf_read_sz=_y4m->pic_w*_y4m->pic_h;
+ _y4m->vpx_fmt = VPX_IMG_FMT_I420;
+ _y4m->bps = 12;
+ _y4m->bit_depth = 8;
+ if (strcmp(_y4m->chroma_type, "420") == 0 ||
+ strcmp(_y4m->chroma_type, "420jpeg") == 0) {
+ _y4m->src_c_dec_h = _y4m->dst_c_dec_h = _y4m->src_c_dec_v = _y4m->dst_c_dec_v = 2;
+ _y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h
+ + 2 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2);
+ /* Natively supported: no conversion required. */
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
+ _y4m->convert = y4m_convert_null;
+ } else if (strcmp(_y4m->chroma_type, "420p10") == 0) {
+ _y4m->src_c_dec_h = 2;
+ _y4m->dst_c_dec_h = 2;
+ _y4m->src_c_dec_v = 2;
+ _y4m->dst_c_dec_v = 2;
+ _y4m->dst_buf_read_sz = 2 * (_y4m->pic_w * _y4m->pic_h +
+ 2 * ((_y4m->pic_w + 1) / 2) *
+ ((_y4m->pic_h + 1) / 2));
+ /* Natively supported: no conversion required. */
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
+ _y4m->convert = y4m_convert_null;
+ _y4m->bit_depth = 10;
+ _y4m->bps = 15;
+ _y4m->vpx_fmt = VPX_IMG_FMT_I42016;
+ if (only_420) {
+ fprintf(stderr, "Unsupported conversion from 420p10 to 420jpeg\n");
+ return -1;
+ }
+ } else if (strcmp(_y4m->chroma_type, "420p12") == 0) {
+ _y4m->src_c_dec_h = 2;
+ _y4m->dst_c_dec_h = 2;
+ _y4m->src_c_dec_v = 2;
+ _y4m->dst_c_dec_v = 2;
+ _y4m->dst_buf_read_sz = 2 * (_y4m->pic_w * _y4m->pic_h +
+ 2 * ((_y4m->pic_w + 1) / 2) *
+ ((_y4m->pic_h + 1) / 2));
+ /* Natively supported: no conversion required. */
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
+ _y4m->convert = y4m_convert_null;
+ _y4m->bit_depth = 12;
+ _y4m->bps = 18;
+ _y4m->vpx_fmt = VPX_IMG_FMT_I42016;
+ if (only_420) {
+ fprintf(stderr, "Unsupported conversion from 420p12 to 420jpeg\n");
+ return -1;
+ }
+ } else if (strcmp(_y4m->chroma_type, "420mpeg2") == 0) {
+ _y4m->src_c_dec_h = _y4m->dst_c_dec_h = _y4m->src_c_dec_v = _y4m->dst_c_dec_v = 2;
+ _y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h;
/*Chroma filter required: read into the aux buf first.*/
- _y4m->aux_buf_sz=_y4m->aux_buf_read_sz=
- 2*((_y4m->pic_w+1)/2)*((_y4m->pic_h+1)/2);
- _y4m->convert=y4m_convert_42xmpeg2_42xjpeg;
- }
- else if(strcmp(_y4m->chroma_type,"420paldv")==0){
- _y4m->src_c_dec_h=_y4m->dst_c_dec_h=_y4m->src_c_dec_v=_y4m->dst_c_dec_v=2;
- _y4m->dst_buf_read_sz=_y4m->pic_w*_y4m->pic_h;
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz =
+ 2 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2);
+ _y4m->convert = y4m_convert_42xmpeg2_42xjpeg;
+ } else if (strcmp(_y4m->chroma_type, "420paldv") == 0) {
+ _y4m->src_c_dec_h = _y4m->dst_c_dec_h = _y4m->src_c_dec_v = _y4m->dst_c_dec_v = 2;
+ _y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h;
/*Chroma filter required: read into the aux buf first.
We need to make two filter passes, so we need some extra space in the
aux buffer.*/
- _y4m->aux_buf_sz=3*((_y4m->pic_w+1)/2)*((_y4m->pic_h+1)/2);
- _y4m->aux_buf_read_sz=2*((_y4m->pic_w+1)/2)*((_y4m->pic_h+1)/2);
- _y4m->convert=y4m_convert_42xpaldv_42xjpeg;
- }
- else if(strcmp(_y4m->chroma_type,"422jpeg")==0){
- _y4m->src_c_dec_h=_y4m->dst_c_dec_h=2;
- _y4m->src_c_dec_v=1;
- _y4m->dst_c_dec_v=2;
- _y4m->dst_buf_read_sz=_y4m->pic_w*_y4m->pic_h;
+ _y4m->aux_buf_sz = 3 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2);
+ _y4m->aux_buf_read_sz = 2 * ((_y4m->pic_w + 1) / 2) * ((_y4m->pic_h + 1) / 2);
+ _y4m->convert = y4m_convert_42xpaldv_42xjpeg;
+ } else if (strcmp(_y4m->chroma_type, "422jpeg") == 0) {
+ _y4m->src_c_dec_h = _y4m->dst_c_dec_h = 2;
+ _y4m->src_c_dec_v = 1;
+ _y4m->dst_c_dec_v = 2;
+ _y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h;
/*Chroma filter required: read into the aux buf first.*/
- _y4m->aux_buf_sz=_y4m->aux_buf_read_sz=2*((_y4m->pic_w+1)/2)*_y4m->pic_h;
- _y4m->convert=y4m_convert_422jpeg_420jpeg;
- }
- else if(strcmp(_y4m->chroma_type,"422")==0){
- _y4m->src_c_dec_h=_y4m->dst_c_dec_h=2;
- _y4m->src_c_dec_v=1;
- _y4m->dst_c_dec_v=2;
- _y4m->dst_buf_read_sz=_y4m->pic_w*_y4m->pic_h;
- /*Chroma filter required: read into the aux buf first.
- We need to make two filter passes, so we need some extra space in the
- aux buffer.*/
- _y4m->aux_buf_read_sz=2*((_y4m->pic_w+1)/2)*_y4m->pic_h;
- _y4m->aux_buf_sz=_y4m->aux_buf_read_sz+((_y4m->pic_w+1)/2)*_y4m->pic_h;
- _y4m->convert=y4m_convert_422_420jpeg;
- }
- else if(strcmp(_y4m->chroma_type,"411")==0){
- _y4m->src_c_dec_h=4;
- _y4m->dst_c_dec_h=2;
- _y4m->src_c_dec_v=1;
- _y4m->dst_c_dec_v=2;
- _y4m->dst_buf_read_sz=_y4m->pic_w*_y4m->pic_h;
- /*Chroma filter required: read into the aux buf first.
- We need to make two filter passes, so we need some extra space in the
- aux buffer.*/
- _y4m->aux_buf_read_sz=2*((_y4m->pic_w+3)/4)*_y4m->pic_h;
- _y4m->aux_buf_sz=_y4m->aux_buf_read_sz+((_y4m->pic_w+1)/2)*_y4m->pic_h;
- _y4m->convert=y4m_convert_411_420jpeg;
- }
- else if(strcmp(_y4m->chroma_type,"444")==0){
- _y4m->src_c_dec_h=1;
- _y4m->dst_c_dec_h=2;
- _y4m->src_c_dec_v=1;
- _y4m->dst_c_dec_v=2;
- _y4m->dst_buf_read_sz=_y4m->pic_w*_y4m->pic_h;
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 2 * ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
+ _y4m->convert = y4m_convert_422jpeg_420jpeg;
+ } else if (strcmp(_y4m->chroma_type, "422") == 0) {
+ _y4m->src_c_dec_h = 2;
+ _y4m->src_c_dec_v = 1;
+ if (only_420) {
+ _y4m->dst_c_dec_h = 2;
+ _y4m->dst_c_dec_v = 2;
+ _y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h;
+ /*Chroma filter required: read into the aux buf first.
+ We need to make two filter passes, so we need some extra space in the
+ aux buffer.*/
+ _y4m->aux_buf_read_sz = 2 * ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz +
+ ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
+ _y4m->convert = y4m_convert_422_420jpeg;
+ } else {
+ _y4m->vpx_fmt = VPX_IMG_FMT_I422;
+ _y4m->bps = 16;
+ _y4m->dst_c_dec_h = _y4m->src_c_dec_h;
+ _y4m->dst_c_dec_v = _y4m->src_c_dec_v;
+ _y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h
+ + 2 * ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
+ /*Natively supported: no conversion required.*/
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
+ _y4m->convert = y4m_convert_null;
+ }
+ } else if (strcmp(_y4m->chroma_type, "422p10") == 0) {
+ _y4m->src_c_dec_h = 2;
+ _y4m->src_c_dec_v = 1;
+ _y4m->vpx_fmt = VPX_IMG_FMT_I42216;
+ _y4m->bps = 20;
+ _y4m->bit_depth = 10;
+ _y4m->dst_c_dec_h = _y4m->src_c_dec_h;
+ _y4m->dst_c_dec_v = _y4m->src_c_dec_v;
+ _y4m->dst_buf_read_sz = 2 * (_y4m->pic_w * _y4m->pic_h +
+ 2 * ((_y4m->pic_w + 1) / 2) * _y4m->pic_h);
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
+ _y4m->convert = y4m_convert_null;
+ if (only_420) {
+ fprintf(stderr, "Unsupported conversion from 422p10 to 420jpeg\n");
+ return -1;
+ }
+ } else if (strcmp(_y4m->chroma_type, "422p12") == 0) {
+ _y4m->src_c_dec_h = 2;
+ _y4m->src_c_dec_v = 1;
+ _y4m->vpx_fmt = VPX_IMG_FMT_I42216;
+ _y4m->bps = 24;
+ _y4m->bit_depth = 12;
+ _y4m->dst_c_dec_h = _y4m->src_c_dec_h;
+ _y4m->dst_c_dec_v = _y4m->src_c_dec_v;
+ _y4m->dst_buf_read_sz = 2 * (_y4m->pic_w * _y4m->pic_h +
+ 2 * ((_y4m->pic_w + 1) / 2) * _y4m->pic_h);
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
+ _y4m->convert = y4m_convert_null;
+ if (only_420) {
+ fprintf(stderr, "Unsupported conversion from 422p12 to 420jpeg\n");
+ return -1;
+ }
+ } else if (strcmp(_y4m->chroma_type, "411") == 0) {
+ _y4m->src_c_dec_h = 4;
+ _y4m->dst_c_dec_h = 2;
+ _y4m->src_c_dec_v = 1;
+ _y4m->dst_c_dec_v = 2;
+ _y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h;
/*Chroma filter required: read into the aux buf first.
We need to make two filter passes, so we need some extra space in the
aux buffer.*/
- _y4m->aux_buf_read_sz=2*_y4m->pic_w*_y4m->pic_h;
- _y4m->aux_buf_sz=_y4m->aux_buf_read_sz+((_y4m->pic_w+1)/2)*_y4m->pic_h;
- _y4m->convert=y4m_convert_444_420jpeg;
- }
- else if(strcmp(_y4m->chroma_type,"444alpha")==0){
- _y4m->src_c_dec_h=1;
- _y4m->dst_c_dec_h=2;
- _y4m->src_c_dec_v=1;
- _y4m->dst_c_dec_v=2;
- _y4m->dst_buf_read_sz=_y4m->pic_w*_y4m->pic_h;
- /*Chroma filter required: read into the aux buf first.
- We need to make two filter passes, so we need some extra space in the
- aux buffer.
- The extra plane also gets read into the aux buf.
- It will be discarded.*/
- _y4m->aux_buf_sz=_y4m->aux_buf_read_sz=3*_y4m->pic_w*_y4m->pic_h;
- _y4m->convert=y4m_convert_444_420jpeg;
- }
- else if(strcmp(_y4m->chroma_type,"mono")==0){
- _y4m->src_c_dec_h=_y4m->src_c_dec_v=0;
- _y4m->dst_c_dec_h=_y4m->dst_c_dec_v=2;
- _y4m->dst_buf_read_sz=_y4m->pic_w*_y4m->pic_h;
+ _y4m->aux_buf_read_sz = 2 * ((_y4m->pic_w + 3) / 4) * _y4m->pic_h;
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz + ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
+ _y4m->convert = y4m_convert_411_420jpeg;
+ } else if (strcmp(_y4m->chroma_type, "444") == 0) {
+ _y4m->src_c_dec_h = 1;
+ _y4m->src_c_dec_v = 1;
+ if (only_420) {
+ _y4m->dst_c_dec_h = 2;
+ _y4m->dst_c_dec_v = 2;
+ _y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h;
+ /*Chroma filter required: read into the aux buf first.
+ We need to make two filter passes, so we need some extra space in the
+ aux buffer.*/
+ _y4m->aux_buf_read_sz = 2 * _y4m->pic_w * _y4m->pic_h;
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz +
+ ((_y4m->pic_w + 1) / 2) * _y4m->pic_h;
+ _y4m->convert = y4m_convert_444_420jpeg;
+ } else {
+ _y4m->vpx_fmt = VPX_IMG_FMT_I444;
+ _y4m->bps = 24;
+ _y4m->dst_c_dec_h = _y4m->src_c_dec_h;
+ _y4m->dst_c_dec_v = _y4m->src_c_dec_v;
+ _y4m->dst_buf_read_sz = 3 * _y4m->pic_w * _y4m->pic_h;
+ /*Natively supported: no conversion required.*/
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
+ _y4m->convert = y4m_convert_null;
+ }
+ } else if (strcmp(_y4m->chroma_type, "444p10") == 0) {
+ _y4m->src_c_dec_h = 1;
+ _y4m->src_c_dec_v = 1;
+ _y4m->vpx_fmt = VPX_IMG_FMT_I44416;
+ _y4m->bps = 30;
+ _y4m->bit_depth = 10;
+ _y4m->dst_c_dec_h = _y4m->src_c_dec_h;
+ _y4m->dst_c_dec_v = _y4m->src_c_dec_v;
+ _y4m->dst_buf_read_sz = 2 * 3 * _y4m->pic_w * _y4m->pic_h;
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
+ _y4m->convert = y4m_convert_null;
+ if (only_420) {
+ fprintf(stderr, "Unsupported conversion from 444p10 to 420jpeg\n");
+ return -1;
+ }
+ } else if (strcmp(_y4m->chroma_type, "444p12") == 0) {
+ _y4m->src_c_dec_h = 1;
+ _y4m->src_c_dec_v = 1;
+ _y4m->vpx_fmt = VPX_IMG_FMT_I44416;
+ _y4m->bps = 36;
+ _y4m->bit_depth = 12;
+ _y4m->dst_c_dec_h = _y4m->src_c_dec_h;
+ _y4m->dst_c_dec_v = _y4m->src_c_dec_v;
+ _y4m->dst_buf_read_sz = 2 * 3 * _y4m->pic_w * _y4m->pic_h;
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
+ _y4m->convert = y4m_convert_null;
+ if (only_420) {
+ fprintf(stderr, "Unsupported conversion from 444p12 to 420jpeg\n");
+ return -1;
+ }
+ } else if (strcmp(_y4m->chroma_type, "444alpha") == 0) {
+ _y4m->src_c_dec_h = 1;
+ _y4m->src_c_dec_v = 1;
+ if (only_420) {
+ _y4m->dst_c_dec_h = 2;
+ _y4m->dst_c_dec_v = 2;
+ _y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h;
+ /*Chroma filter required: read into the aux buf first.
+ We need to make two filter passes, so we need some extra space in the
+ aux buffer.
+ The extra plane also gets read into the aux buf.
+ It will be discarded.*/
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 3 * _y4m->pic_w * _y4m->pic_h;
+ _y4m->convert = y4m_convert_444_420jpeg;
+ } else {
+ _y4m->vpx_fmt = VPX_IMG_FMT_444A;
+ _y4m->bps = 32;
+ _y4m->dst_c_dec_h = _y4m->src_c_dec_h;
+ _y4m->dst_c_dec_v = _y4m->src_c_dec_v;
+ _y4m->dst_buf_read_sz = 4 * _y4m->pic_w * _y4m->pic_h;
+ /*Natively supported: no conversion required.*/
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
+ _y4m->convert = y4m_convert_null;
+ }
+ } else if (strcmp(_y4m->chroma_type, "mono") == 0) {
+ _y4m->src_c_dec_h = _y4m->src_c_dec_v = 0;
+ _y4m->dst_c_dec_h = _y4m->dst_c_dec_v = 2;
+ _y4m->dst_buf_read_sz = _y4m->pic_w * _y4m->pic_h;
/*No extra space required, but we need to clear the chroma planes.*/
- _y4m->aux_buf_sz=_y4m->aux_buf_read_sz=0;
- _y4m->convert=y4m_convert_mono_420jpeg;
- }
- else{
- fprintf(stderr,"Unknown chroma sampling type: %s\n",_y4m->chroma_type);
+ _y4m->aux_buf_sz = _y4m->aux_buf_read_sz = 0;
+ _y4m->convert = y4m_convert_mono_420jpeg;
+ } else {
+ fprintf(stderr, "Unknown chroma sampling type: %s\n", _y4m->chroma_type);
return -1;
}
/*The size of the final frame buffers is always computed from the
destination chroma decimation type.*/
- _y4m->dst_buf_sz=_y4m->pic_w*_y4m->pic_h
- +2*((_y4m->pic_w+_y4m->dst_c_dec_h-1)/_y4m->dst_c_dec_h)*
- ((_y4m->pic_h+_y4m->dst_c_dec_v-1)/_y4m->dst_c_dec_v);
- _y4m->dst_buf=(unsigned char *)malloc(_y4m->dst_buf_sz);
- _y4m->aux_buf=(unsigned char *)malloc(_y4m->aux_buf_sz);
+ _y4m->dst_buf_sz = _y4m->pic_w * _y4m->pic_h
+ + 2 * ((_y4m->pic_w + _y4m->dst_c_dec_h - 1) / _y4m->dst_c_dec_h) *
+ ((_y4m->pic_h + _y4m->dst_c_dec_v - 1) / _y4m->dst_c_dec_v);
+ if (_y4m->bit_depth == 8)
+ _y4m->dst_buf = (unsigned char *)malloc(_y4m->dst_buf_sz);
+ else
+ _y4m->dst_buf = (unsigned char *)malloc(2 * _y4m->dst_buf_sz);
+
+ if (_y4m->aux_buf_sz > 0)
+ _y4m->aux_buf = (unsigned char *)malloc(_y4m->aux_buf_sz);
return 0;
}
-void y4m_input_close(y4m_input *_y4m){
+void y4m_input_close(y4m_input *_y4m) {
free(_y4m->dst_buf);
free(_y4m->aux_buf);
}
-int y4m_input_fetch_frame(y4m_input *_y4m,FILE *_fin,vpx_image_t *_img){
+int y4m_input_fetch_frame(y4m_input *_y4m, FILE *_fin, vpx_image_t *_img) {
char frame[6];
int pic_sz;
int c_w;
int c_h;
int c_sz;
- int ret;
+ int bytes_per_sample = _y4m->bit_depth > 8 ? 2 : 1;
/*Read and skip the frame header.*/
- ret=(int)fread(frame,1,6,_fin);
- if(ret<6)return 0;
- if(memcmp(frame,"FRAME",5)){
- fprintf(stderr,"Loss of framing in Y4M input data\n");
+ if (!file_read(frame, 6, _fin)) return 0;
+ if (memcmp(frame, "FRAME", 5)) {
+ fprintf(stderr, "Loss of framing in Y4M input data\n");
return -1;
}
- if(frame[5]!='\n'){
+ if (frame[5] != '\n') {
char c;
int j;
- for(j=0;j<79&&fread(&c,1,1,_fin)&&c!='\n';j++);
- if(j==79){
- fprintf(stderr,"Error parsing Y4M frame header\n");
+ for (j = 0; j < 79 && file_read(&c, 1, _fin) && c != '\n'; j++) {}
+ if (j == 79) {
+ fprintf(stderr, "Error parsing Y4M frame header\n");
return -1;
}
}
/*Read the frame data that needs no conversion.*/
- if(fread(_y4m->dst_buf,1,_y4m->dst_buf_read_sz,_fin)!=_y4m->dst_buf_read_sz){
- fprintf(stderr,"Error reading Y4M frame data.\n");
+ if (!file_read(_y4m->dst_buf, _y4m->dst_buf_read_sz, _fin)) {
+ fprintf(stderr, "Error reading Y4M frame data.\n");
return -1;
}
/*Read the frame data that does need conversion.*/
- if(fread(_y4m->aux_buf,1,_y4m->aux_buf_read_sz,_fin)!=_y4m->aux_buf_read_sz){
- fprintf(stderr,"Error reading Y4M frame data.\n");
+ if (!file_read(_y4m->aux_buf, _y4m->aux_buf_read_sz, _fin)) {
+ fprintf(stderr, "Error reading Y4M frame data.\n");
return -1;
}
/*Now convert the just read frame.*/
- (*_y4m->convert)(_y4m,_y4m->dst_buf,_y4m->aux_buf);
+ (*_y4m->convert)(_y4m, _y4m->dst_buf, _y4m->aux_buf);
/*Fill in the frame buffer pointers.
We don't use vpx_img_wrap() because it forces padding for odd picture
sizes, which would require a separate fread call for every row.*/
- memset(_img,0,sizeof(*_img));
+ memset(_img, 0, sizeof(*_img));
/*Y4M has the planes in Y'CbCr order, which libvpx calls Y, U, and V.*/
- _img->fmt=IMG_FMT_I420;
- _img->w=_img->d_w=_y4m->pic_w;
- _img->h=_img->d_h=_y4m->pic_h;
- /*This is hard-coded to 4:2:0 for now, as that's all VP8 supports.*/
- _img->x_chroma_shift=1;
- _img->y_chroma_shift=1;
- _img->bps=12;
+ _img->fmt = _y4m->vpx_fmt;
+ _img->w = _img->d_w = _y4m->pic_w;
+ _img->h = _img->d_h = _y4m->pic_h;
+ _img->x_chroma_shift = _y4m->dst_c_dec_h >> 1;
+ _img->y_chroma_shift = _y4m->dst_c_dec_v >> 1;
+ _img->bps = _y4m->bps;
+
/*Set up the buffer pointers.*/
- pic_sz=_y4m->pic_w*_y4m->pic_h;
- c_w=(_y4m->pic_w+_y4m->dst_c_dec_h-1)/_y4m->dst_c_dec_h;
- c_h=(_y4m->pic_h+_y4m->dst_c_dec_v-1)/_y4m->dst_c_dec_v;
- c_sz=c_w*c_h;
- _img->stride[PLANE_Y]=_y4m->pic_w;
- _img->stride[PLANE_U]=_img->stride[PLANE_V]=c_w;
- _img->planes[PLANE_Y]=_y4m->dst_buf;
- _img->planes[PLANE_U]=_y4m->dst_buf+pic_sz;
- _img->planes[PLANE_V]=_y4m->dst_buf+pic_sz+c_sz;
+ pic_sz = _y4m->pic_w * _y4m->pic_h * bytes_per_sample;
+ c_w = (_y4m->pic_w + _y4m->dst_c_dec_h - 1) / _y4m->dst_c_dec_h;
+ c_w *= bytes_per_sample;
+ c_h = (_y4m->pic_h + _y4m->dst_c_dec_v - 1) / _y4m->dst_c_dec_v;
+ c_sz = c_w * c_h;
+ _img->stride[PLANE_Y] = _img->stride[PLANE_ALPHA] =
+ _y4m->pic_w * bytes_per_sample;
+ _img->stride[PLANE_U] = _img->stride[PLANE_V] = c_w;
+ _img->planes[PLANE_Y] = _y4m->dst_buf;
+ _img->planes[PLANE_U] = _y4m->dst_buf + pic_sz;
+ _img->planes[PLANE_V] = _y4m->dst_buf + pic_sz + c_sz;
+ _img->planes[PLANE_ALPHA] = _y4m->dst_buf + pic_sz + 2 * c_sz;
return 1;
}
projects / libvpx / blobdiff