mirror of https://github.com/mpv-player/mpv
81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
#include "af.h"
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/* Decodes the format from mplayer format to libaf format */
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int af_format_decode(int ifmt)
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{
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int ofmt = ~0;
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// Check input ifmt
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switch(ifmt){
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case(AFMT_U8):
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ofmt = AF_FORMAT_LE|AF_FORMAT_US; break;
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case(AFMT_S8):
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ofmt = AF_FORMAT_LE|AF_FORMAT_SI; break;
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case(AFMT_S16_LE):
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ofmt = AF_FORMAT_LE|AF_FORMAT_SI; break;
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case(AFMT_S16_BE):
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ofmt = AF_FORMAT_BE|AF_FORMAT_SI; break;
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case(AFMT_U16_LE):
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ofmt = AF_FORMAT_LE|AF_FORMAT_US; break;
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case(AFMT_U16_BE):
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ofmt = AF_FORMAT_BE|AF_FORMAT_US; break;
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case(AFMT_S32_LE):
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ofmt = AF_FORMAT_LE|AF_FORMAT_SI; break;
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case(AFMT_S32_BE):
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ofmt = AF_FORMAT_BE|AF_FORMAT_SI; break;
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case(AFMT_IMA_ADPCM):
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ofmt = AF_FORMAT_IMA_ADPCM; break;
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case(AFMT_MU_LAW):
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ofmt = AF_FORMAT_MU_LAW; break;
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case(AFMT_A_LAW):
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ofmt = AF_FORMAT_A_LAW; break;
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case(AFMT_MPEG):
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ofmt = AF_FORMAT_MPEG2; break;
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case(AFMT_AC3):
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ofmt = AF_FORMAT_AC3; break;
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case(AFMT_FLOAT):
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ofmt = AF_FORMAT_F | AF_FORMAT_NE; break;
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default:
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//This can not happen ....
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af_msg(AF_MSG_FATAL,"Unrecognized input audio format %i\n",ifmt);
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break;
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}
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return ofmt;
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}
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/* Encodes the format from libaf format to mplayer (OSS) format */
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int af_format_encode(void* fmtp)
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{
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af_data_t* fmt=(af_data_t*) fmtp;
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switch(fmt->format&AF_FORMAT_SPECIAL_MASK){
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case 0: // PCM:
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if((fmt->format&AF_FORMAT_POINT_MASK)==AF_FORMAT_I){
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if((fmt->format&AF_FORMAT_SIGN_MASK)==AF_FORMAT_SI){
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// signed int PCM:
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switch(fmt->bps){
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case 1: return AFMT_S8;
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case 2: return (fmt->format&AF_FORMAT_LE) ? AFMT_S16_LE : AFMT_S16_BE;
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case 4: return (fmt->format&AF_FORMAT_LE) ? AFMT_S32_LE : AFMT_S32_BE;
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}
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} else {
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// unsigned int PCM:
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switch(fmt->bps){
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case 1: return AFMT_U8;
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case 2: return (fmt->format&AF_FORMAT_LE) ? AFMT_U16_LE : AFMT_U16_BE;
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// case 4: return (fmt->format&AF_FORMAT_LE) ? AFMT_U32_LE : AFMT_U32_BE;
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}
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}
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} else {
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// float PCM:
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return AFMT_FLOAT; // FIXME?
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}
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break;
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case AF_FORMAT_MU_LAW: return AFMT_MU_LAW;
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case AF_FORMAT_A_LAW: return AFMT_A_LAW;
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case AF_FORMAT_MPEG2: return AFMT_MPEG;
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case AF_FORMAT_AC3: return AFMT_AC3;
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case AF_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM;
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}
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return AFMT_S16_LE; // shouldn't happen
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}
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