diff options
Diffstat (limited to 'codecs/mp3/src/csbtL3.c')
-rwxr-xr-x | codecs/mp3/src/csbtL3.c | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/codecs/mp3/src/csbtL3.c b/codecs/mp3/src/csbtL3.c new file mode 100755 index 000000000..85f9599b0 --- /dev/null +++ b/codecs/mp3/src/csbtL3.c @@ -0,0 +1,316 @@ +/*____________________________________________________________________________ + + FreeAmp - The Free MP3 Player + + MP3 Decoder originally Copyright (C) 1995-1997 Xing Technology + Corp. http://www.xingtech.com + + Portions Copyright (C) 1998 EMusic.com + + This program 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. + + This program 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 this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + $Id$ +____________________________________________________________________________*/ + +/**** csbtL3.c *************************************************** + +layer III + + include to csbt.c + +******************************************************************/ +/*============================================================*/ +/*============ Layer III =====================================*/ +/*============================================================*/ +void sbt_mono_L3(MPEG *m, float *sample, short *pcm, int ch) +{ + int i; + + ch = 0; + for (i = 0; i < 18; i++) + { + fdct32(m,sample, m->csbt.vbuf + m->csbt.vb_ptr); + window(m->csbt.vbuf, m->csbt.vb_ptr, pcm); + sample += 32; + m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511; + pcm += 32; + } + +} +/*------------------------------------------------------------*/ +void sbt_dual_L3(MPEG *m, float *sample, short *pcm, int ch) +{ + int i; + + if (ch == 0) + for (i = 0; i < 18; i++) + { + fdct32(m,sample, m->csbt.vbuf + m->csbt.vb_ptr); + window_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm); + sample += 32; + m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511; + pcm += 64; + } + else + for (i = 0; i < 18; i++) + { + fdct32(m,sample, m->csbt.vbuf2 + m->csbt.vb2_ptr); + window_dual(m,m->csbt.vbuf2, m->csbt.vb2_ptr, pcm + 1); + sample += 32; + m->csbt.vb2_ptr = (m->csbt.vb2_ptr - 32) & 511; + pcm += 64; + } + + +} +/*------------------------------------------------------------*/ +/*------------------------------------------------------------*/ +/*---------------- 16 pt sbt's -------------------------------*/ +/*------------------------------------------------------------*/ +void sbt16_mono_L3(MPEG *m, float *sample, short *pcm, int ch) +{ + int i; + + ch = 0; + for (i = 0; i < 18; i++) + { + fdct16(m,sample, m->csbt.vbuf + m->csbt.vb_ptr); + window16(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm); + sample += 32; + m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255; + pcm += 16; + } + + +} +/*------------------------------------------------------------*/ +void sbt16_dual_L3(MPEG *m, float *sample, short *pcm, int ch) +{ + int i; + + + if (ch == 0) + { + for (i = 0; i < 18; i++) + { + fdct16(m,sample, m->csbt.vbuf + m->csbt.vb_ptr); + window16_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm); + sample += 32; + m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255; + pcm += 32; + } + } + else + { + for (i = 0; i < 18; i++) + { + fdct16(m,sample, m->csbt.vbuf2 + m->csbt.vb2_ptr); + window16_dual(m,m->csbt.vbuf2, m->csbt.vb2_ptr, pcm + 1); + sample += 32; + m->csbt.vb2_ptr = (m->csbt.vb2_ptr - 16) & 255; + pcm += 32; + } + } + +} +/*------------------------------------------------------------*/ +/*---------------- 8 pt sbt's -------------------------------*/ +/*------------------------------------------------------------*/ +void sbt8_mono_L3(MPEG *m, float *sample, short *pcm, int ch) +{ + int i; + + ch = 0; + for (i = 0; i < 18; i++) + { + fdct8(m,sample, m->csbt.vbuf + m->csbt.vb_ptr); + window8(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm); + sample += 32; + m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127; + pcm += 8; + } + +} +/*------------------------------------------------------------*/ +void sbt8_dual_L3(MPEG *m, float *sample, short *pcm, int ch) +{ + int i; + + if (ch == 0) + { + for (i = 0; i < 18; i++) + { + fdct8(m,sample, m->csbt.vbuf + m->csbt.vb_ptr); + window8_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm); + sample += 32; + m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127; + pcm += 16; + } + } + else + { + for (i = 0; i < 18; i++) + { + fdct8(m,sample, m->csbt.vbuf2 + m->csbt.vb2_ptr); + window8_dual(m,m->csbt.vbuf2, m->csbt.vb2_ptr, pcm + 1); + sample += 32; + m->csbt.vb2_ptr = (m->csbt.vb2_ptr - 8) & 127; + pcm += 16; + } + } + + + +} +/*------------------------------------------------------------*/ +/*------- 8 bit output ---------------------------------------*/ +/*------------------------------------------------------------*/ +void sbtB_mono_L3(MPEG *m, float *sample, unsigned char *pcm, int ch) +{ + int i; + + ch = 0; + for (i = 0; i < 18; i++) + { + fdct32(m,sample, m->csbt.vbuf + m->csbt.vb_ptr); + windowB(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm); + sample += 32; + m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511; + pcm += 32; + } + +} +/*------------------------------------------------------------*/ +void sbtB_dual_L3(MPEG *m, float *sample, unsigned char *pcm, int ch) +{ + int i; + + if (ch == 0) + for (i = 0; i < 18; i++) + { + fdct32(m,sample, m->csbt.vbuf + m->csbt.vb_ptr); + windowB_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm); + sample += 32; + m->csbt.vb_ptr = (m->csbt.vb_ptr - 32) & 511; + pcm += 64; + } + else + for (i = 0; i < 18; i++) + { + fdct32(m,sample, m->csbt.vbuf2 + m->csbt.vb2_ptr); + windowB_dual(m,m->csbt.vbuf2, m->csbt.vb2_ptr, pcm + 1); + sample += 32; + m->csbt.vb2_ptr = (m->csbt.vb2_ptr - 32) & 511; + pcm += 64; + } + +} +/*------------------------------------------------------------*/ +/*------------------------------------------------------------*/ +/*---------------- 16 pt sbtB's -------------------------------*/ +/*------------------------------------------------------------*/ +void sbtB16_mono_L3(MPEG *m, float *sample, unsigned char *pcm, int ch) +{ + int i; + + ch = 0; + for (i = 0; i < 18; i++) + { + fdct16(m,sample, m->csbt.vbuf + m->csbt.vb_ptr); + windowB16(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm); + sample += 32; + m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255; + pcm += 16; + } + + +} +/*------------------------------------------------------------*/ +void sbtB16_dual_L3(MPEG *m, float *sample, unsigned char *pcm, int ch) +{ + int i; + + if (ch == 0) + { + for (i = 0; i < 18; i++) + { + fdct16(m,sample, m->csbt.vbuf + m->csbt.vb_ptr); + windowB16_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm); + sample += 32; + m->csbt.vb_ptr = (m->csbt.vb_ptr - 16) & 255; + pcm += 32; + } + } + else + { + for (i = 0; i < 18; i++) + { + fdct16(m,sample, m->csbt.vbuf2 + m->csbt.vb2_ptr); + windowB16_dual(m,m->csbt.vbuf2, m->csbt.vb2_ptr, pcm + 1); + sample += 32; + m->csbt.vb2_ptr = (m->csbt.vb2_ptr - 16) & 255; + pcm += 32; + } + } + +} +/*------------------------------------------------------------*/ +/*---------------- 8 pt sbtB's -------------------------------*/ +/*------------------------------------------------------------*/ +void sbtB8_mono_L3(MPEG *m, float *sample, unsigned char *pcm, int ch) +{ + int i; + + ch = 0; + for (i = 0; i < 18; i++) + { + fdct8(m,sample, m->csbt.vbuf + m->csbt.vb_ptr); + windowB8(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm); + sample += 32; + m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127; + pcm += 8; + } + +} +/*------------------------------------------------------------*/ +void sbtB8_dual_L3(MPEG *m, float *sample, unsigned char *pcm, int ch) +{ + int i; + + if (ch == 0) + { + for (i = 0; i < 18; i++) + { + fdct8(m,sample, m->csbt.vbuf + m->csbt.vb_ptr); + windowB8_dual(m,m->csbt.vbuf, m->csbt.vb_ptr, pcm); + sample += 32; + m->csbt.vb_ptr = (m->csbt.vb_ptr - 8) & 127; + pcm += 16; + } + } + else + { + for (i = 0; i < 18; i++) + { + fdct8(m,sample, m->csbt.vbuf2 + m->csbt.vb2_ptr); + windowB8_dual(m,m->csbt.vbuf2, m->csbt.vb2_ptr, pcm + 1); + sample += 32; + m->csbt.vb2_ptr = (m->csbt.vb2_ptr - 8) & 127; + pcm += 16; + } + } + +} +/*------------------------------------------------------------*/ |