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AAC Encode

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17 Feb 2012CPOL3 min read 66.8K   5K   27  
Raw Audio data is encoded to AAC compression using ffmmpeg library.
/*
 * Copyright (C) 2001-2003 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 General Public License as published by
 * the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 * You should have received a copy of the GNU 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 POSTPROC_POSTPROCESS_H
#define POSTPROC_POSTPROCESS_H

/**
 * @file
 * @brief
 *     external postprocessing API
 */

#include "libavutil/avutil.h"

#define LIBPOSTPROC_VERSION_MAJOR 51
#define LIBPOSTPROC_VERSION_MINOR  2
#define LIBPOSTPROC_VERSION_MICRO  0

#define LIBPOSTPROC_VERSION_INT AV_VERSION_INT(LIBPOSTPROC_VERSION_MAJOR, \
                                               LIBPOSTPROC_VERSION_MINOR, \
                                               LIBPOSTPROC_VERSION_MICRO)
#define LIBPOSTPROC_VERSION     AV_VERSION(LIBPOSTPROC_VERSION_MAJOR, \
                                           LIBPOSTPROC_VERSION_MINOR, \
                                           LIBPOSTPROC_VERSION_MICRO)
#define LIBPOSTPROC_BUILD       LIBPOSTPROC_VERSION_INT

#define LIBPOSTPROC_IDENT       "postproc" AV_STRINGIFY(LIBPOSTPROC_VERSION)

/**
 * Return the LIBPOSTPROC_VERSION_INT constant.
 */
unsigned postproc_version(void);

/**
 * Return the libpostproc build-time configuration.
 */
const char *postproc_configuration(void);

/**
 * Return the libpostproc license.
 */
const char *postproc_license(void);

#define PP_QUALITY_MAX 6

#define QP_STORE_T int8_t

#include <inttypes.h>

typedef void pp_context;
typedef void pp_mode;

#if LIBPOSTPROC_VERSION_INT < (52<<16)
typedef pp_context pp_context_t;
typedef pp_mode pp_mode_t;
extern const char *const pp_help; ///< a simple help text
#else
extern const char pp_help[]; ///< a simple help text
#endif

void  pp_postprocess(const uint8_t * src[3], const int srcStride[3],
                     uint8_t * dst[3], const int dstStride[3],
                     int horizontalSize, int verticalSize,
                     const QP_STORE_T *QP_store,  int QP_stride,
                     pp_mode *mode, pp_context *ppContext, int pict_type);


/**
 * returns a pp_mode or NULL if an error occurred
 * name is the string after "-pp" on the command line
 * quality is a number from 0 to PP_QUALITY_MAX
 */
pp_mode *pp_get_mode_by_name_and_quality(const char *name, int quality);
void pp_free_mode(pp_mode *mode);

pp_context *pp_get_context(int width, int height, int flags);
void pp_free_context(pp_context *ppContext);

#define PP_CPU_CAPS_MMX   0x80000000
#define PP_CPU_CAPS_MMX2  0x20000000
#define PP_CPU_CAPS_3DNOW 0x40000000
#define PP_CPU_CAPS_ALTIVEC 0x10000000

#define PP_FORMAT         0x00000008
#define PP_FORMAT_420    (0x00000011|PP_FORMAT)
#define PP_FORMAT_422    (0x00000001|PP_FORMAT)
#define PP_FORMAT_411    (0x00000002|PP_FORMAT)
#define PP_FORMAT_444    (0x00000000|PP_FORMAT)

#define PP_PICT_TYPE_QP2  0x00000010 ///< MPEG2 style QScale

#endif /* POSTPROC_POSTPROCESS_H */

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Software Developer (Senior) 3k Techonologies
United States United States
Suresh Potluri has worked in Windows device drivers, Solid experience in NDIS Layer, developed many NDIS Miniport drivers. Extensive experience in developing NDIS miniport drivers, building WHQL/DTM setup, clearing all WHQL/DTM tests, and subsequently getting device signature/logo process for the developed drivers. He also was also solely responsible for debugging traps and blue screens for a number of years.
he also worked on many PCI based boards, developed Board support packages, Vx-Works firmware for Power PC, firmware for ARM based boards for Wireless LAN devices.

he is interested in Embedded, NDIS, MPEG.

Previously worked in Tandberg TV, Sunnyvale, Chlesio Communications, Sunnyvale, Hellosoft, Hyderabad.

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