diff options
Diffstat (limited to 'audio/format.c')
-rw-r--r-- | audio/format.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/audio/format.c b/audio/format.c new file mode 100644 index 0000000000..88d66522a0 --- /dev/null +++ b/audio/format.c @@ -0,0 +1,134 @@ +/* + * Copyright (C) 2005 Alex Beregszaszi + * + * This file is part of MPlayer. + * + * MPlayer is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * MPlayer 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with MPlayer; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <inttypes.h> +#include <limits.h> + +#include "af.h" + +int af_fmt2bits(int format) +{ + if (AF_FORMAT_IS_AC3(format)) return 16; + return (format & AF_FORMAT_BITS_MASK)+8; +// return (((format & AF_FORMAT_BITS_MASK)>>3)+1) * 8; +#if 0 + switch(format & AF_FORMAT_BITS_MASK) + { + case AF_FORMAT_8BIT: return 8; + case AF_FORMAT_16BIT: return 16; + case AF_FORMAT_24BIT: return 24; + case AF_FORMAT_32BIT: return 32; + case AF_FORMAT_48BIT: return 48; + } +#endif + return -1; +} + +int af_bits2fmt(int bits) +{ + return (bits/8 - 1) << 3; +} + +/* Convert format to str input str is a buffer for the + converted string, size is the size of the buffer */ +char* af_fmt2str(int format, char* str, int size) +{ + const char *name = af_fmt2str_short(format); + if (name) { + snprintf(str, size, "%s", name); + } else { + snprintf(str, size, "%#x", format); + } + return str; +} + +const struct af_fmt_entry af_fmtstr_table[] = { + { "mulaw", AF_FORMAT_MU_LAW }, + { "alaw", AF_FORMAT_A_LAW }, + { "mpeg2", AF_FORMAT_MPEG2 }, + { "ac3le", AF_FORMAT_AC3_LE }, + { "ac3be", AF_FORMAT_AC3_BE }, + { "ac3ne", AF_FORMAT_AC3_NE }, + { "iec61937le", AF_FORMAT_IEC61937_LE }, + { "iec61937be", AF_FORMAT_IEC61937_BE }, + { "iec61937ne", AF_FORMAT_IEC61937_NE }, + { "imaadpcm", AF_FORMAT_IMA_ADPCM }, + + { "u8", AF_FORMAT_U8 }, + { "s8", AF_FORMAT_S8 }, + { "u16le", AF_FORMAT_U16_LE }, + { "u16be", AF_FORMAT_U16_BE }, + { "u16ne", AF_FORMAT_U16_NE }, + { "s16le", AF_FORMAT_S16_LE }, + { "s16be", AF_FORMAT_S16_BE }, + { "s16ne", AF_FORMAT_S16_NE }, + { "u24le", AF_FORMAT_U24_LE }, + { "u24be", AF_FORMAT_U24_BE }, + { "u24ne", AF_FORMAT_U24_NE }, + { "s24le", AF_FORMAT_S24_LE }, + { "s24be", AF_FORMAT_S24_BE }, + { "s24ne", AF_FORMAT_S24_NE }, + { "u32le", AF_FORMAT_U32_LE }, + { "u32be", AF_FORMAT_U32_BE }, + { "u32ne", AF_FORMAT_U32_NE }, + { "s32le", AF_FORMAT_S32_LE }, + { "s32be", AF_FORMAT_S32_BE }, + { "s32ne", AF_FORMAT_S32_NE }, + { "floatle", AF_FORMAT_FLOAT_LE }, + { "floatbe", AF_FORMAT_FLOAT_BE }, + { "floatne", AF_FORMAT_FLOAT_NE }, + + {0} +}; + +const char *af_fmt2str_short(int format) +{ + int i; + + for (i = 0; af_fmtstr_table[i].name; i++) + if (af_fmtstr_table[i].format == format) + return af_fmtstr_table[i].name; + + return "??"; +} + +static bool af_fmt_valid(int format) +{ + return (format & AF_FORMAT_MASK) == format; +} + +int af_str2fmt_short(bstr str) +{ + if (bstr_startswith0(str, "0x")) { + bstr rest; + int fmt = bstrtoll(str, &rest, 16); + if (rest.len == 0 && af_fmt_valid(fmt)) + return fmt; + } + + for (int i = 0; af_fmtstr_table[i].name; i++) + if (!bstrcasecmp0(str, af_fmtstr_table[i].name)) + return af_fmtstr_table[i].format; + + return -1; +} |