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author | Michael Niedermayer <michaelni@gmx.at> | 2012-07-04 20:39:50 +0200 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2012-07-04 21:03:28 +0200 |
commit | 039e9fe01ca27606a0ec1a944d51041541e10aab (patch) | |
tree | 9fc96837e878cdb2c13b6016d9f3d69785570488 /libavcodec/flacdsp_template.c | |
parent | 8b421fad24acbba69935caf2a2775bd04f8a707a (diff) | |
parent | 7c29377b702783680b223a12503df784b1808086 (diff) | |
download | ffmpeg-039e9fe01ca27606a0ec1a944d51041541e10aab.tar.gz |
Merge remote-tracking branch 'qatar/master'
* qatar/master: (29 commits)
lavfi: reclassify showfiltfmts as a TESTPROG
graph2dot: fix printf format specifier
swscale: yuv2planeX 8bit >=sse2 functions need aligned stack on x86-32.
vp8: loopfilter >=sse2 functions need aligned stack on x86-32.
amr: remove shift out of the AMR_BIT() macro.
dsputilenc: group yasm and inline asm function pointer assignment.
mov: use forward declaration of a function instead of a table.
Clarify Doxygen comment for FF_API_* #defines.
configure: simplify get_version()
Create version.h headers for libraries that lack them
gitignore: Use full path instead of relative path to specify patterns
mpegvideo: remove VLAs
Add XTEA encryption support in libavutil
Add Blowfish encryption support in libavutil
eval: Add the isinf() function and tests for it
flacdec: move lpc filter to flacdsp
flacdec: split off channel decorrelation as flacdsp
avplay: Add an option for not limiting the input buffer size
FATE: add a test for WMA cover art.
FATE: add a test for apetag cover art
...
Conflicts:
.gitignore
configure
ffplay.c
libavcodec/Makefile
libavcodec/error_resilience.c
libavcodec/mpegvideo.c
libavcodec/ratecontrol.c
libavdevice/avdevice.h
libavfilter/Makefile
libavfilter/filtfmts.c
libavfilter/version.h
libavformat/mov.c
libavformat/version.h
libavutil/Makefile
libavutil/avutil.h
libavutil/version.h
libswscale/swscale.h
libswscale/x86/swscale_mmx.c
tests/fate/libavutil.mak
tests/lavfi-regression.sh
tools/graph2dot.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/flacdsp_template.c')
-rw-r--r-- | libavcodec/flacdsp_template.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/libavcodec/flacdsp_template.c b/libavcodec/flacdsp_template.c new file mode 100644 index 0000000000..808b20d41d --- /dev/null +++ b/libavcodec/flacdsp_template.c @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2012 Mans Rullgard <mans@mansr.com> + * + * 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 <stdint.h> + +#undef FUNC +#undef sample + +#if SAMPLE_SIZE == 32 +# define FUNC(n) n ## _32 +# define sample int32_t +#else +# define FUNC(n) n ## _16 +# define sample int16_t +#endif + +static void FUNC(flac_decorrelate_indep_c)(uint8_t **out, int32_t **in, + int channels, int len, int shift) +{ + sample *samples = (sample *) out[0]; + int i, j; + + for (j = 0; j < len; j++) + for (i = 0; i < channels; i++) + *samples++ = in[i][j] << shift; +} + +static void FUNC(flac_decorrelate_ls_c)(uint8_t **out, int32_t **in, + int channels, int len, int shift) +{ + sample *samples = (sample *) out[0]; + int i; + + for (i = 0; i < len; i++) { + int a = in[0][i]; + int b = in[1][i]; + *samples++ = a << shift; + *samples++ = (a - b) << shift; + } +} + +static void FUNC(flac_decorrelate_rs_c)(uint8_t **out, int32_t **in, + int channels, int len, int shift) +{ + sample *samples = (sample *) out[0]; + int i; + + for (i = 0; i < len; i++) { + int a = in[0][i]; + int b = in[1][i]; + *samples++ = (a + b) << shift; + *samples++ = b << shift; + } +} + +static void FUNC(flac_decorrelate_ms_c)(uint8_t **out, int32_t **in, + int channels, int len, int shift) +{ + sample *samples = (sample *) out[0]; + int i; + + for (i = 0; i < len; i++) { + int a = in[0][i]; + int b = in[1][i]; + a -= b >> 1; + *samples++ = (a + b) << shift; + *samples++ = a << shift; + } +} |