#include?“AvG711.h“
#include?“g711.h“
#include?
#include?
#include?

AvG711::AvG711（AvG711Fmt?fmt）?{

	fmt_?=?fmt;
}

AvG711::~AvG711（）?{

}

int?AvG711::encode（unsigned?char?**odata?unsigned?char?*idata?int?ilen）?{

	if?（ilen?>?0）?{

		int?olen?=?ilen?/?2;
		*odata?=?（unsigned?char?*）malloc（sizeof（unsigned?char）?*?olen）;
		if?（*odata）?{

			if（fmt_?==?AvG711Fmt_Alaw）?
				return?g711a_encode（*odata?（short?*）idata?ilen）;
			else?if（fmt_?==?AvG711Fmt_Ulaw）
				return?g711u_encode（*odata?（short?*）idata?ilen）;
		}
	}
	return?-1;
}

int?AvG711::encode（const?char?*g711_file?const?char?*pcm_file）?{

	FILE?*ifile?=?fopen（pcm_file?“rb“）;
	FILE?*ofile?=?fopen（g711_file?“wb“）;
	if?（ifile?&&?ofile）?{

		int?r?=?-1;
		do?{

			unsigned?char?ibuf[160];
			r?=?fread（ibuf?1?160?ifile）;
			if?（r?>?0）?{

				unsigned?char?*obuf;
				int?olen?=?encode（&obuf?ibuf?r）;
				fwrite（obuf?1?olen?ofile）;
				free_output_data（obuf）;
				memset（ibuf?0?sizeof（ibuf））;
			}
		}?while?（r?>?0）;
		fclose（ifile）;
		fclose（ofile）;
		return?0;
	}
	return?-1;
}

int?AvG711::decode（unsigned?char?**odata?unsigned?char?*idata?int?ilen）?{

	if?（ilen?>?0）?{

		int?olen?=?ilen?*?2;
		*odata?=?（unsigned?char?*）malloc（sizeof（unsigned?char）?*?olen）;
		if?（*odata）?{

			if?（fmt_?==?AvG711Fmt_Alaw）
				return?g711a_decode（（short?*）（*odata）?idata?ilen）;
			else?if?（fmt_?==?AvG711Fmt_Ulaw）
				return?g711u_decode（（short?*）（*odata）?idata?ilen）;
		}
	}
	return?-1;
}

int?AvG711::decode（const?char?*pcm_file?const?char?*g711_file）?{

	FILE?*ifile?=?fopen（g711_file?“rb“）;
	FILE?*ofile?=?fopen（pcm_file?“wb“）;
	if?（ifile?&&?ofile）?{

		int?r?=?-1;
		do?{

			unsigned?char?ibuf[80];
			r?=?fread（ibuf?1?80?ifile）;
			if?（r?>?0）?{

				unsigned?char?*obuf;
				int?olen?=?decode（&obuf?ibuf?r）;
				fwrite（obuf?1?olen?ofile）;
				free_output_data（obuf）;
				memset（ibuf?0?sizeof（ibuf））;
			}
		}?while?（r?>?0）;
		fclose（ifile）;
		fclose（ofile）;
		return?0;
	}
	return?-1;
}

void?AvG711::free_output_data（unsigned?char?*odata）?{

	free（odata）;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????2188??2019-11-21?15:39??g711\AvG711.cpp

?????文件????????786??2019-11-21?15:38??g711\AvG711.h

?????文件?????157362??2019-11-21?15:56??g711\g711.cpp

?????文件????????908??2019-11-21?15:56??g711\g711.h

?????目錄??????????0??2019-12-02?18:59??g711

-----------?---------??----------?-----??----

???????????????161244????????????????????5