mirror of
https://github.com/mpv-player/mpv
synced 2024-12-15 19:35:49 +00:00
e54b5d16df
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@16260 b3059339-0415-0410-9bf9-f77b7e298cf2
201 lines
5.0 KiB
C
201 lines
5.0 KiB
C
/*=============================================================================
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//
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// This software has been released under the terms of the GNU General Public
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// license. See http://www.gnu.org/copyleft/gpl.html for details.
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//
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// Copyright 2005 Alex Beregszaszi
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//
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//=============================================================================
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include <limits.h>
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#include "af.h"
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// Convert from string to format
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int af_str2fmt(char* str)
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{
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int format=0;
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// Scan for endianess
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if(strstr(str,"be") || strstr(str,"BE"))
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format |= AF_FORMAT_BE;
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else if(strstr(str,"le") || strstr(str,"LE"))
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format |= AF_FORMAT_LE;
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else
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format |= AF_FORMAT_NE;
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// Scan for special formats
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if(strstr(str,"mulaw") || strstr(str,"MULAW")){
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format |= AF_FORMAT_MU_LAW; return format;
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}
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if(strstr(str,"alaw") || strstr(str,"ALAW")){
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format |= AF_FORMAT_A_LAW; return format;
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}
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if(strstr(str,"ac3") || strstr(str,"AC3")){
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format |= AF_FORMAT_AC3; return format;
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}
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if(strstr(str,"mpeg2") || strstr(str,"MPEG2")){
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format |= AF_FORMAT_MPEG2; return format;
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}
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if(strstr(str,"imaadpcm") || strstr(str,"IMAADPCM")){
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format |= AF_FORMAT_IMA_ADPCM; return format;
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}
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// Scan for int/float
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if(strstr(str,"float") || strstr(str,"FLOAT")){
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format |= AF_FORMAT_F; return format;
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}
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else
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format |= AF_FORMAT_I;
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// Scan for signed/unsigned
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if(strstr(str,"unsigned") || strstr(str,"UNSIGNED"))
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format |= AF_FORMAT_US;
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else
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format |= AF_FORMAT_SI;
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return format;
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}
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inline int af_fmt2bits(int format)
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{
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return (format & AF_FORMAT_BITS_MASK)+8;
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// return (((format & AF_FORMAT_BITS_MASK)>>3)+1) * 8;
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#if 0
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switch(format & AF_FORMAT_BITS_MASK)
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{
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case AF_FORMAT_8BIT: return 8;
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case AF_FORMAT_16BIT: return 16;
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case AF_FORMAT_24BIT: return 24;
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case AF_FORMAT_32BIT: return 32;
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case AF_FORMAT_48BIT: return 48;
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}
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#endif
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return -1;
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}
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inline int af_bits2fmt(int bits)
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{
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return (bits/8 - 1) << 3;
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}
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/* Convert format to str input str is a buffer for the
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converted string, size is the size of the buffer */
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char* af_fmt2str(int format, char* str, int size)
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{
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int i=0;
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if (size < 1)
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return NULL;
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size--; // reserve one for terminating 0
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// Endianess
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if(AF_FORMAT_LE == (format & AF_FORMAT_END_MASK))
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i+=snprintf(str,size-i,"little-endian ");
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else
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i+=snprintf(str,size-i,"big-endian ");
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if(format & AF_FORMAT_SPECIAL_MASK){
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switch(format & AF_FORMAT_SPECIAL_MASK){
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case(AF_FORMAT_MU_LAW):
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i+=snprintf(&str[i],size-i,"mu-law "); break;
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case(AF_FORMAT_A_LAW):
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i+=snprintf(&str[i],size-i,"A-law "); break;
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case(AF_FORMAT_MPEG2):
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i+=snprintf(&str[i],size-i,"MPEG-2 "); break;
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case(AF_FORMAT_AC3):
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i+=snprintf(&str[i],size-i,"AC3 "); break;
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case(AF_FORMAT_IMA_ADPCM):
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i+=snprintf(&str[i],size-i,"IMA-ADPCM "); break;
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default:
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printf("Unknown special\n");
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}
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}
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else{
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// Bits
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i+=snprintf(&str[i],size-i,"%d-bit ", af_fmt2bits(format));
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// Point
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if(AF_FORMAT_F == (format & AF_FORMAT_POINT_MASK))
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i+=snprintf(&str[i],size-i,"float ");
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else{
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// Sign
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if(AF_FORMAT_US == (format & AF_FORMAT_SIGN_MASK))
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i+=snprintf(&str[i],size-i,"unsigned ");
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else
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i+=snprintf(&str[i],size-i,"signed ");
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i+=snprintf(&str[i],size-i,"int ");
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}
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}
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// remove trailing space
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if (i > 0 && str[i - 1] == ' ')
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i--;
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str[i] = 0; // make sure it is 0 terminated.
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return str;
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}
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static struct {
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const char *name;
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const int format;
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} af_fmtstr_table[] = {
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{ "mulaw", AF_FORMAT_MU_LAW },
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{ "alaw", AF_FORMAT_A_LAW },
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{ "mpeg2", AF_FORMAT_MPEG2 },
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{ "ac3", AF_FORMAT_AC3 },
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{ "imaadpcm", AF_FORMAT_IMA_ADPCM },
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{ "u8", AF_FORMAT_U8 },
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{ "s8", AF_FORMAT_S8 },
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{ "u16le", AF_FORMAT_U16_LE },
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{ "u16be", AF_FORMAT_U16_BE },
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{ "u16ne", AF_FORMAT_U16_NE },
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{ "s16le", AF_FORMAT_S16_LE },
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{ "s16be", AF_FORMAT_S16_BE },
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{ "s16ne", AF_FORMAT_S16_NE },
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{ "u24le", AF_FORMAT_U24_LE },
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{ "u24be", AF_FORMAT_U24_BE },
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{ "u24ne", AF_FORMAT_U24_NE },
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{ "s24le", AF_FORMAT_S24_LE },
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{ "s24be", AF_FORMAT_S24_BE },
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{ "s24ne", AF_FORMAT_S24_NE },
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{ "u32le", AF_FORMAT_U32_LE },
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{ "u32be", AF_FORMAT_U32_BE },
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{ "u32ne", AF_FORMAT_U32_NE },
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{ "s32le", AF_FORMAT_S32_LE },
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{ "s32be", AF_FORMAT_S32_BE },
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{ "s32ne", AF_FORMAT_S32_NE },
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{ "floatle", AF_FORMAT_FLOAT_LE },
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{ "floatbe", AF_FORMAT_FLOAT_BE },
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{ "floatne", AF_FORMAT_FLOAT_NE },
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{ NULL, 0 }
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};
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char *af_fmt2str_short(int format)
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{
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int i;
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for (i = 0; af_fmtstr_table[i].name; i++)
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if (af_fmtstr_table[i].format == format)
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return (char*)(af_fmtstr_table[i].name);
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return "??";
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}
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int af_str2fmt_short(char* str)
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{
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int i;
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for (i = 0; af_fmtstr_table[i].name; i++)
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if (!strcasecmp(str, af_fmtstr_table[i].name))
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return af_fmtstr_table[i].format;
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return -1;
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}
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