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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/ffvpx/libavutil/utils.c | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | media/ffvpx/libavutil/utils.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/utils.c b/media/ffvpx/libavutil/utils.c new file mode 100644 index 0000000000..94d247bbee --- /dev/null +++ b/media/ffvpx/libavutil/utils.c @@ -0,0 +1,112 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "config.h" +#include "avutil.h" +#include "avassert.h" + +/** + * @file + * various utility functions + */ + +const char *av_get_media_type_string(enum AVMediaType media_type) +{ + switch (media_type) { + case AVMEDIA_TYPE_VIDEO: return "video"; + case AVMEDIA_TYPE_AUDIO: return "audio"; + case AVMEDIA_TYPE_DATA: return "data"; + case AVMEDIA_TYPE_SUBTITLE: return "subtitle"; + case AVMEDIA_TYPE_ATTACHMENT: return "attachment"; + default: return NULL; + } +} + +char av_get_picture_type_char(enum AVPictureType pict_type) +{ + switch (pict_type) { + case AV_PICTURE_TYPE_I: return 'I'; + case AV_PICTURE_TYPE_P: return 'P'; + case AV_PICTURE_TYPE_B: return 'B'; + case AV_PICTURE_TYPE_S: return 'S'; + case AV_PICTURE_TYPE_SI: return 'i'; + case AV_PICTURE_TYPE_SP: return 'p'; + case AV_PICTURE_TYPE_BI: return 'b'; + default: return '?'; + } +} + +unsigned av_int_list_length_for_size(unsigned elsize, + const void *list, uint64_t term) +{ + unsigned i; + + if (!list) + return 0; +#define LIST_LENGTH(type) \ + { type t = term, *l = (type *)list; for (i = 0; l[i] != t; i++); } + switch (elsize) { + case 1: LIST_LENGTH(uint8_t); break; + case 2: LIST_LENGTH(uint16_t); break; + case 4: LIST_LENGTH(uint32_t); break; + case 8: LIST_LENGTH(uint64_t); break; + default: av_assert0(!"valid element size"); + } + return i; +} + +char *av_fourcc_make_string(char *buf, uint32_t fourcc) +{ + int i; + char *orig_buf = buf; + size_t buf_size = AV_FOURCC_MAX_STRING_SIZE; + + for (i = 0; i < 4; i++) { + const int c = fourcc & 0xff; + const int print_chr = (c >= '0' && c <= '9') || + (c >= 'a' && c <= 'z') || + (c >= 'A' && c <= 'Z') || + (c && strchr(". -_", c)); + const int len = snprintf(buf, buf_size, print_chr ? "%c" : "[%d]", c); + if (len < 0) + break; + buf += len; + buf_size = buf_size > len ? buf_size - len : 0; + fourcc >>= 8; + } + + return orig_buf; +} + +AVRational av_get_time_base_q(void) +{ + return (AVRational){1, AV_TIME_BASE}; +} + +void av_assert0_fpu(void) { +#if HAVE_MMX_INLINE + uint16_t state[14]; + __asm__ volatile ( + "fstenv %0 \n\t" + : "+m" (state) + : + : "memory" + ); + av_assert0((state[4] & 3) == 3); +#endif +} |