FFmpeg/libavcodec/fmtconvert.h
Michael Niedermayer 75a37b57a5 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  APIchanges: fill in date and commit for request_sample_fmt
  Add floating-point sample format support to the ac3, eac3, dca, aac, and vorbis decoders.
  Add support for request_sample_format in ffmpeg and ffplay.
  Add APIchanges entry for request_sample_fmt.
  Add request_sample_fmt field to AVCodecContext.
  Add float_interleave() to FmtConvertContext with x86-optimized versions.
  Remove unused make variable SEEK_REFFILE
  fate: remove redundant aref and vref references
  fate: remove do_ffmpeg_nocheck function
  fate: do not collect -benchmark output
  mpegaudiodec: remove decode_end() function
  fate: run aref and vref as regular tests
  mpegaudio: sanitise compute_antialias_* names
  mpeg12: add slice-threading checks to slice-threading initializers.
  h264: copy pixel_shift between slice threading contexts.
  mdec: enable frame-level multithreading.
  mdec.c: fix overread.

Conflicts:
	libavcodec/aacdec.c
	libavcodec/ac3dec.c
	libavcodec/avcodec.h
	libavcodec/dca.c
	libavcodec/h264.c
	libavcodec/mdec.c
	libavcodec/mpeg12.c
	libavcodec/options.c
	libavcodec/version.h
	libavcodec/vorbisdec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-05-19 06:00:31 +02:00

93 lines
3.5 KiB
C

/*
* Format Conversion Utils
* Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* 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
*/
#ifndef AVCODEC_FMTCONVERT_H
#define AVCODEC_FMTCONVERT_H
#include "avcodec.h"
typedef struct FmtConvertContext {
/**
* Convert an array of int32_t to float and multiply by a float value.
* @param dst destination array of float.
* constraints: 16-byte aligned
* @param src source array of int32_t.
* constraints: 16-byte aligned
* @param len number of elements to convert.
* constraints: multiple of 8
*/
void (*int32_to_float_fmul_scalar)(float *dst, const int *src, float mul, int len);
/**
* Convert an array of float to an array of int16_t.
*
* Convert floats from in the range [-32768.0,32767.0] to ints
* without rescaling
*
* @param dst destination array of int16_t.
* constraints: 16-byte aligned
* @param src source array of float.
* constraints: 16-byte aligned
* @param len number of elements to convert.
* constraints: multiple of 8
*/
void (*float_to_int16)(int16_t *dst, const float *src, long len);
/**
* Convert multiple arrays of float to an interleaved array of int16_t.
*
* Convert floats from in the range [-32768.0,32767.0] to ints
* without rescaling
*
* @param dst destination array of interleaved int16_t.
* constraints: 16-byte aligned
* @param src source array of float arrays, one for each channel.
* constraints: 16-byte aligned
* @param len number of elements to convert.
* constraints: multiple of 8
* @param channels number of channels
*/
void (*float_to_int16_interleave)(int16_t *dst, const float **src,
long len, int channels);
/**
* Convert an array of interleaved float to multiple arrays of float.
*/
void (*float_interleave)(float *dst, const float **src, unsigned int len,
int channels);
} FmtConvertContext;
void ff_float_interleave_c(float *dst, const float **src, unsigned int len,
int channels);
void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx);
void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx);
void ff_fmt_convert_init_altivec(FmtConvertContext *c, AVCodecContext *avctx);
void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx);
/* ffdshow custom code */
void float_interleave(float *dst, const float **src, long len, int channels);
void float_interleave_noscale(float *dst, const float **src, long len, int channels);
#endif /* AVCODEC_FMTCONVERT_H */