diff options
Diffstat (limited to 'media/libvpx/libvpx/y4menc.c')
-rw-r--r-- | media/libvpx/libvpx/y4menc.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/y4menc.c b/media/libvpx/libvpx/y4menc.c new file mode 100644 index 0000000000..1877981279 --- /dev/null +++ b/media/libvpx/libvpx/y4menc.c @@ -0,0 +1,57 @@ +/* + * 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_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"); +} |