61 строка
2.2 KiB
C
61 строка
2.2 KiB
C
/*
|
|
* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include "./y4menc.h"
|
|
|
|
int y4m_write_file_header(char *buf, size_t len, int width, int height,
|
|
const struct VpxRational *framerate,
|
|
vpx_img_fmt_t fmt, unsigned int bit_depth) {
|
|
const char *color;
|
|
switch (bit_depth) {
|
|
case 8:
|
|
color = fmt == VPX_IMG_FMT_444A ? "C444alpha\n" :
|
|
fmt == VPX_IMG_FMT_I444 ? "C444\n" :
|
|
fmt == VPX_IMG_FMT_I422 ? "C422\n" :
|
|
"C420jpeg\n";
|
|
break;
|
|
case 9:
|
|
color = fmt == VPX_IMG_FMT_I44416 ? "C444p9 XYSCSS=444P9\n" :
|
|
fmt == VPX_IMG_FMT_I42216 ? "C422p9 XYSCSS=422P9\n" :
|
|
"C420p9 XYSCSS=420P9\n";
|
|
break;
|
|
case 10:
|
|
color = fmt == VPX_IMG_FMT_I44416 ? "C444p10 XYSCSS=444P10\n" :
|
|
fmt == VPX_IMG_FMT_I42216 ? "C422p10 XYSCSS=422P10\n" :
|
|
"C420p10 XYSCSS=420P10\n";
|
|
break;
|
|
case 12:
|
|
color = fmt == VPX_IMG_FMT_I44416 ? "C444p12 XYSCSS=444P12\n" :
|
|
fmt == VPX_IMG_FMT_I42216 ? "C422p12 XYSCSS=422P12\n" :
|
|
"C420p12 XYSCSS=420P12\n";
|
|
break;
|
|
case 14:
|
|
color = fmt == VPX_IMG_FMT_I44416 ? "C444p14 XYSCSS=444P14\n" :
|
|
fmt == VPX_IMG_FMT_I42216 ? "C422p14 XYSCSS=422P14\n" :
|
|
"C420p14 XYSCSS=420P14\n";
|
|
break;
|
|
case 16:
|
|
color = fmt == VPX_IMG_FMT_I44416 ? "C444p16 XYSCSS=444P16\n" :
|
|
fmt == VPX_IMG_FMT_I42216 ? "C422p16 XYSCSS=422P16\n" :
|
|
"C420p16 XYSCSS=420P16\n";
|
|
break;
|
|
default:
|
|
color = NULL;
|
|
assert(0);
|
|
}
|
|
return snprintf(buf, len, "YUV4MPEG2 W%u H%u F%u:%u I%c %s", width, height,
|
|
framerate->numerator, framerate->denominator, 'p', color);
|
|
}
|
|
|
|
int y4m_write_frame_header(char *buf, size_t len) {
|
|
return snprintf(buf, len, "FRAME\n");
|
|
}
|