* 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"
+// 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;
static void y4m_convert_mono_420jpeg(y4m_input *_y4m, unsigned char *_dst,
unsigned char *_aux) {
int c_sz;
+ (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);
/*No conversion function needed.*/
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.*/
buffer[i] = *_skip++;
_nskip--;
} else {
- ret = (int)fread(buffer + i, 1, 1, _fin);
- if (ret < 1)return -1;
+ if (!file_read(buffer + i, 1, _fin)) return -1;
}
if (buffer[i] == '\n')break;
}
"Only progressive scan handled.\n");
return -1;
}
+ _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.*/
+ /* 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;
_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_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;
+ 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->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;
- /*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;
+ 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->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;
+ 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_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);
+ 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;
}
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 (!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') {
char c;
int j;
- for (j = 0; j < 79 && fread(&c, 1, 1, _fin) && c != '\n'; j++);
+ 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) {
+ 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) {
+ if (!file_read(_y4m->aux_buf, _y4m->aux_buf_read_sz, _fin)) {
fprintf(stderr, "Error reading Y4M frame data.\n");
return -1;
}
sizes, which would require a separate fread call for every row.*/
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->fmt = _y4m->vpx_fmt;
_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->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;
+ 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] = _y4m->pic_w;
+ _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