/* * G711 handling (includes A-Law & MU-Law) * * Copyright (C) 2002 Eric Pouech * * * This library 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. * * This library 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 this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include #include #include #include "windef.h" #include "winbase.h" #include "wingdi.h" #include "winuser.h" #include "winnls.h" #include "mmsystem.h" #include "mmreg.h" #include "msacm.h" #include "msacmdrv.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(g711); /*********************************************************************** * G711_drvOpen */ static LRESULT G711_drvOpen(LPCSTR str) { return 1; } /*********************************************************************** * G711_drvClose */ static LRESULT G711_drvClose(DWORD_PTR dwDevID) { return 1; } typedef struct tagAcmG711Data { void (*convert)(PACMDRVSTREAMINSTANCE adsi, const unsigned char*, LPDWORD, unsigned char*, LPDWORD); } AcmG711Data; /* table to list all supported formats... those are the basic ones. this * also helps given a unique index to each of the supported formats */ typedef struct { int nChannels; int nBits; int rate; } Format; static const Format PCM_Formats[] = { /*{1, 8, 8000}, {2, 8, 8000}, */{1, 16, 8000}, {2, 16, 8000}, /*{1, 8, 11025}, {2, 8, 11025}, */{1, 16, 11025}, {2, 16, 11025}, /*{1, 8, 22050}, {2, 8, 22050}, */{1, 16, 22050}, {2, 16, 22050}, /*{1, 8, 44100}, {2, 8, 44100}, */{1, 16, 44100}, {2, 16, 44100}, }; static const Format ALaw_Formats[] = { {1, 8, 8000}, {2, 8, 8000}, {1, 8, 11025}, {2, 8, 11025}, {1, 8, 22050}, {2, 8, 22050}, {1, 8, 44100}, {2, 8, 44100}, }; static const Format ULaw_Formats[] = { {1, 8, 8000}, {2, 8, 8000}, {1, 8, 11025}, {2, 8, 11025}, {1, 8, 22050}, {2, 8, 22050}, {1, 8, 44100}, {2, 8, 44100}, }; /*********************************************************************** * G711_GetFormatIndex */ static DWORD G711_GetFormatIndex(const WAVEFORMATEX *wfx) { int i, hi; const Format* fmts; switch (wfx->wFormatTag) { case WAVE_FORMAT_PCM: hi = ARRAY_SIZE(PCM_Formats); fmts = PCM_Formats; break; case WAVE_FORMAT_ALAW: hi = ARRAY_SIZE(ALaw_Formats); fmts = ALaw_Formats; break; case WAVE_FORMAT_MULAW: hi = ARRAY_SIZE(ULaw_Formats); fmts = ULaw_Formats; break; default: return 0xFFFFFFFF; } for (i = 0; i < hi; i++) { if (wfx->nChannels == fmts[i].nChannels && wfx->nSamplesPerSec == fmts[i].rate && wfx->wBitsPerSample == fmts[i].nBits) return i; } return 0xFFFFFFFF; } /*********************************************************************** * R16 * * Read a 16 bit sample (correctly handles endianness) */ static inline short R16(const unsigned char* src) { return (short)((unsigned short)src[0] | ((unsigned short)src[1] << 8)); } /*********************************************************************** * W16 * * Write a 16 bit sample (correctly handles endianness) */ static inline void W16(unsigned char* dst, short s) { dst[0] = LOBYTE(s); dst[1] = HIBYTE(s); } /* You can uncomment this if you don't want the statically generated conversion * table, but rather recompute the Xlaw => PCM conversion for each sample #define NO_FASTDECODE * Since the conversion tables are rather small (2k), I don't think it's really * interesting not to use them, but keeping the actual conversion code around * is helpful to regenerate the tables when needed. */ /* -------------------------------------------------------------------------------*/ /* * This source code is a product of Sun Microsystems, Inc. and is provided * for unrestricted use. Users may copy or modify this source code without * charge. * * SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING * THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. * * Sun source code is provided with no support and without any obligation on * the part of Sun Microsystems, Inc. to assist in its use, correction, * modification or enhancement. * * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE * OR ANY PART THEREOF. * * In no event will Sun Microsystems, Inc. be liable for any lost revenue * or profits or other special, indirect and consequential damages, even if * Sun has been advised of the possibility of such damages. * * Sun Microsystems, Inc. * 2550 Garcia Avenue * Mountain View, California 94043 */ /* * g711.c * * u-law, A-law and linear PCM conversions. */ /* * December 30, 1994: * Functions linear2alaw, linear2ulaw have been updated to correctly * convert unquantized 16 bit values. * Tables for direct u- to A-law and A- to u-law conversions have been * corrected. * Borge Lindberg, Center for PersonKommunikation, Aalborg University. * bli@cpk.auc.dk * */ #define SIGN_BIT (0x80) /* Sign bit for an A-law byte. */ #define QUANT_MASK (0xf) /* Quantization field mask. */ #define NSEGS (8) /* Number of A-law segments. */ #define SEG_SHIFT (4) /* Left shift for segment number. */ #define SEG_MASK (0x70) /* Segment field mask. */ static const short seg_aend[8] = {0x1F, 0x3F, 0x7F, 0x0FF, 0x1FF, 0x3FF, 0x7FF, 0x0FFF}; static const short seg_uend[8] = {0x3F, 0x7F, 0xFF, 0x1FF, 0x3FF, 0x7FF, 0xFFF, 0x1FFF}; /* copy from CCITT G.711 specifications */ static const unsigned char _u2a[128] = { /* u- to A-law conversions */ 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 29, 31, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, /* corrected: 81, 82, 83, 84, 85, 86, 87, 88, should be: */ 80, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128}; static const unsigned char _a2u[128] = { /* A- to u-law conversions */ 1, 3, 5, 7, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 32, 33, 33, 34, 34, 35, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 48, 49, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 64, 65, 66, 67, 68, 69, 70, 71, 72, /* corrected: 73, 74, 75, 76, 77, 78, 79, 79, should be: */ 73, 74, 75, 76, 77, 78, 79, 80, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127}; static short search( int val, /* changed from "short" *drago* */ const short *table, int size) /* changed from "short" *drago* */ { int i; /* changed from "short" *drago* */ for (i = 0; i < size; i++) { if (val <= *table++) return (i); } return (size); } /* * linear2alaw() - Convert a 16-bit linear PCM value to 8-bit A-law * * linear2alaw() accepts an 16-bit integer and encodes it as A-law data. * * Linear Input Code Compressed Code * ------------------------ --------------- * 0000000wxyza 000wxyz * 0000001wxyza 001wxyz * 000001wxyzab 010wxyz * 00001wxyzabc 011wxyz * 0001wxyzabcd 100wxyz * 001wxyzabcde 101wxyz * 01wxyzabcdef 110wxyz * 1wxyzabcdefg 111wxyz * * For further information see John C. Bellamy's Digital Telephony, 1982, * John Wiley & Sons, pps 98-111 and 472-476. */ static inline unsigned char linear2alaw(int pcm_val) /* 2's complement (16-bit range) */ /* changed from "short" *drago* */ { int mask; /* changed from "short" *drago* */ int seg; /* changed from "short" *drago* */ unsigned char aval; pcm_val = pcm_val >> 3; if (pcm_val >= 0) { mask = 0xD5; /* sign (7th) bit = 1 */ } else { mask = 0x55; /* sign bit = 0 */ pcm_val = -pcm_val - 1; } /* Convert the scaled magnitude to segment number. */ seg = search(pcm_val, seg_aend, 8); /* Combine the sign, segment, and quantization bits. */ if (seg >= 8) /* out of range, return maximum value. */ return (unsigned char) (0x7F ^ mask); else { aval = (unsigned char) seg << SEG_SHIFT; if (seg < 2) aval |= (pcm_val >> 1) & QUANT_MASK; else aval |= (pcm_val >> seg) & QUANT_MASK; return (aval ^ mask); } } #ifdef NO_FASTDECODE /* * alaw2linear() - Convert an A-law value to 16-bit linear PCM * */ static inline int alaw2linear(unsigned char a_val) { int t; /* changed from "short" *drago* */ int seg; /* changed from "short" *drago* */ a_val ^= 0x55; t = (a_val & QUANT_MASK) << 4; seg = ((unsigned)a_val & SEG_MASK) >> SEG_SHIFT; switch (seg) { case 0: t += 8; break; case 1: t += 0x108; break; default: t += 0x108; t <<= seg - 1; } return ((a_val & SIGN_BIT) ? t : -t); } #else /* EPP (for Wine): * this array has been statically generated from the above routine */ static const unsigned short _a2l[] = { 0xEA80, 0xEB80, 0xE880, 0xE980, 0xEE80, 0xEF80, 0xEC80, 0xED80, 0xE280, 0xE380, 0xE080, 0xE180, 0xE680, 0xE780, 0xE480, 0xE580, 0xF540, 0xF5C0, 0xF440, 0xF4C0, 0xF740, 0xF7C0, 0xF640, 0xF6C0, 0xF140, 0xF1C0, 0xF040, 0xF0C0, 0xF340, 0xF3C0, 0xF240, 0xF2C0, 0xAA00, 0xAE00, 0xA200, 0xA600, 0xBA00, 0xBE00, 0xB200, 0xB600, 0x8A00, 0x8E00, 0x8200, 0x8600, 0x9A00, 0x9E00, 0x9200, 0x9600, 0xD500, 0xD700, 0xD100, 0xD300, 0xDD00, 0xDF00, 0xD900, 0xDB00, 0xC500, 0xC700, 0xC100, 0xC300, 0xCD00, 0xCF00, 0xC900, 0xCB00, 0xFEA8, 0xFEB8, 0xFE88, 0xFE98, 0xFEE8, 0xFEF8, 0xFEC8, 0xFED8, 0xFE28, 0xFE38, 0xFE08, 0xFE18, 0xFE68, 0xFE78, 0xFE48, 0xFE58, 0xFFA8, 0xFFB8, 0xFF88, 0xFF98, 0xFFE8, 0xFFF8, 0xFFC8, 0xFFD8, 0xFF28, 0xFF38, 0xFF08, 0xFF18, 0xFF68, 0xFF78, 0xFF48, 0xFF58, 0xFAA0, 0xFAE0, 0xFA20, 0xFA60, 0xFBA0, 0xFBE0, 0xFB20, 0xFB60, 0xF8A0, 0xF8E0, 0xF820, 0xF860, 0xF9A0, 0xF9E0, 0xF920, 0xF960, 0xFD50, 0xFD70, 0xFD10, 0xFD30, 0xFDD0, 0xFDF0, 0xFD90, 0xFDB0, 0xFC50, 0xFC70, 0xFC10, 0xFC30, 0xFCD0, 0xFCF0, 0xFC90, 0xFCB0, 0x1580, 0x1480, 0x1780, 0x1680, 0x1180, 0x1080, 0x1380, 0x1280, 0x1D80, 0x1C80, 0x1F80, 0x1E80, 0x1980, 0x1880, 0x1B80, 0x1A80, 0x0AC0, 0x0A40, 0x0BC0, 0x0B40, 0x08C0, 0x0840, 0x09C0, 0x0940, 0x0EC0, 0x0E40, 0x0FC0, 0x0F40, 0x0CC0, 0x0C40, 0x0DC0, 0x0D40, 0x5600, 0x5200, 0x5E00, 0x5A00, 0x4600, 0x4200, 0x4E00, 0x4A00, 0x7600, 0x7200, 0x7E00, 0x7A00, 0x6600, 0x6200, 0x6E00, 0x6A00, 0x2B00, 0x2900, 0x2F00, 0x2D00, 0x2300, 0x2100, 0x2700, 0x2500, 0x3B00, 0x3900, 0x3F00, 0x3D00, 0x3300, 0x3100, 0x3700, 0x3500, 0x0158, 0x0148, 0x0178, 0x0168, 0x0118, 0x0108, 0x0138, 0x0128, 0x01D8, 0x01C8, 0x01F8, 0x01E8, 0x0198, 0x0188, 0x01B8, 0x01A8, 0x0058, 0x0048, 0x0078, 0x0068, 0x0018, 0x0008, 0x0038, 0x0028, 0x00D8, 0x00C8, 0x00F8, 0x00E8, 0x0098, 0x0088, 0x00B8, 0x00A8, 0x0560, 0x0520, 0x05E0, 0x05A0, 0x0460, 0x0420, 0x04E0, 0x04A0, 0x0760, 0x0720, 0x07E0, 0x07A0, 0x0660, 0x0620, 0x06E0, 0x06A0, 0x02B0, 0x0290, 0x02F0, 0x02D0, 0x0230, 0x0210, 0x0270, 0x0250, 0x03B0, 0x0390, 0x03F0, 0x03D0, 0x0330, 0x0310, 0x0370, 0x0350, }; static inline int alaw2linear(unsigned char a_val) { return (short)_a2l[a_val]; } #endif #define BIAS (0x84) /* Bias for linear code. */ #define CLIP 8159 /* * linear2ulaw() - Convert a linear PCM value to u-law * * In order to simplify the encoding process, the original linear magnitude * is biased by adding 33 which shifts the encoding range from (0 - 8158) to * (33 - 8191). The result can be seen in the following encoding table: * * Biased Linear Input Code Compressed Code * ------------------------ --------------- * 00000001wxyza 000wxyz * 0000001wxyzab 001wxyz * 000001wxyzabc 010wxyz * 00001wxyzabcd 011wxyz * 0001wxyzabcde 100wxyz * 001wxyzabcdef 101wxyz * 01wxyzabcdefg 110wxyz * 1wxyzabcdefgh 111wxyz * * Each biased linear code has a leading 1 which identifies the segment * number. The value of the segment number is equal to 7 minus the number * of leading 0's. The quantization interval is directly available as the * four bits wxyz. * The trailing bits (a - h) are ignored. * * Ordinarily the complement of the resulting code word is used for * transmission, and so the code word is complemented before it is returned. * * For further information see John C. Bellamy's Digital Telephony, 1982, * John Wiley & Sons, pps 98-111 and 472-476. */ static inline unsigned char linear2ulaw(short pcm_val) /* 2's complement (16-bit range) */ { short mask; short seg; unsigned char uval; /* Get the sign and the magnitude of the value. */ pcm_val = pcm_val >> 2; if (pcm_val < 0) { pcm_val = -pcm_val; mask = 0x7F; } else { mask = 0xFF; } if ( pcm_val > CLIP ) pcm_val = CLIP; /* clip the magnitude */ pcm_val += (BIAS >> 2); /* Convert the scaled magnitude to segment number. */ seg = search(pcm_val, seg_uend, 8); /* * Combine the sign, segment, quantization bits; * and complement the code word. */ if (seg >= 8) /* out of range, return maximum value. */ return (unsigned char) (0x7F ^ mask); else { uval = (unsigned char) (seg << 4) | ((pcm_val >> (seg + 1)) & 0xF); return (uval ^ mask); } } #ifdef NO_FASTDECODE /* * ulaw2linear() - Convert a u-law value to 16-bit linear PCM * * First, a biased linear code is derived from the code word. An unbiased * output can then be obtained by subtracting 33 from the biased code. * * Note that this function expects to be passed the complement of the * original code word. This is in keeping with ISDN conventions. */ static inline short ulaw2linear(unsigned char u_val) { short t; /* Complement to obtain normal u-law value. */ u_val = ~u_val; /* * Extract and bias the quantization bits. Then * shift up by the segment number and subtract out the bias. */ t = ((u_val & QUANT_MASK) << 3) + BIAS; t <<= ((unsigned)u_val & SEG_MASK) >> SEG_SHIFT; return ((u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS)); } #else /* EPP (for Wine): * this array has been statically generated from the above routine */ static const unsigned short _u2l[] = { 0x8284, 0x8684, 0x8A84, 0x8E84, 0x9284, 0x9684, 0x9A84, 0x9E84, 0xA284, 0xA684, 0xAA84, 0xAE84, 0xB284, 0xB684, 0xBA84, 0xBE84, 0xC184, 0xC384, 0xC584, 0xC784, 0xC984, 0xCB84, 0xCD84, 0xCF84, 0xD184, 0xD384, 0xD584, 0xD784, 0xD984, 0xDB84, 0xDD84, 0xDF84, 0xE104, 0xE204, 0xE304, 0xE404, 0xE504, 0xE604, 0xE704, 0xE804, 0xE904, 0xEA04, 0xEB04, 0xEC04, 0xED04, 0xEE04, 0xEF04, 0xF004, 0xF0C4, 0xF144, 0xF1C4, 0xF244, 0xF2C4, 0xF344, 0xF3C4, 0xF444, 0xF4C4, 0xF544, 0xF5C4, 0xF644, 0xF6C4, 0xF744, 0xF7C4, 0xF844, 0xF8A4, 0xF8E4, 0xF924, 0xF964, 0xF9A4, 0xF9E4, 0xFA24, 0xFA64, 0xFAA4, 0xFAE4, 0xFB24, 0xFB64, 0xFBA4, 0xFBE4, 0xFC24, 0xFC64, 0xFC94, 0xFCB4, 0xFCD4, 0xFCF4, 0xFD14, 0xFD34, 0xFD54, 0xFD74, 0xFD94, 0xFDB4, 0xFDD4, 0xFDF4, 0xFE14, 0xFE34, 0xFE54, 0xFE74, 0xFE8C, 0xFE9C, 0xFEAC, 0xFEBC, 0xFECC, 0xFEDC, 0xFEEC, 0xFEFC, 0xFF0C, 0xFF1C, 0xFF2C, 0xFF3C, 0xFF4C, 0xFF5C, 0xFF6C, 0xFF7C, 0xFF88, 0xFF90, 0xFF98, 0xFFA0, 0xFFA8, 0xFFB0, 0xFFB8, 0xFFC0, 0xFFC8, 0xFFD0, 0xFFD8, 0xFFE0, 0xFFE8, 0xFFF0, 0xFFF8, 0x0000, 0x7D7C, 0x797C, 0x757C, 0x717C, 0x6D7C, 0x697C, 0x657C, 0x617C, 0x5D7C, 0x597C, 0x557C, 0x517C, 0x4D7C, 0x497C, 0x457C, 0x417C, 0x3E7C, 0x3C7C, 0x3A7C, 0x387C, 0x367C, 0x347C, 0x327C, 0x307C, 0x2E7C, 0x2C7C, 0x2A7C, 0x287C, 0x267C, 0x247C, 0x227C, 0x207C, 0x1EFC, 0x1DFC, 0x1CFC, 0x1BFC, 0x1AFC, 0x19FC, 0x18FC, 0x17FC, 0x16FC, 0x15FC, 0x14FC, 0x13FC, 0x12FC, 0x11FC, 0x10FC, 0x0FFC, 0x0F3C, 0x0EBC, 0x0E3C, 0x0DBC, 0x0D3C, 0x0CBC, 0x0C3C, 0x0BBC, 0x0B3C, 0x0ABC, 0x0A3C, 0x09BC, 0x093C, 0x08BC, 0x083C, 0x07BC, 0x075C, 0x071C, 0x06DC, 0x069C, 0x065C, 0x061C, 0x05DC, 0x059C, 0x055C, 0x051C, 0x04DC, 0x049C, 0x045C, 0x041C, 0x03DC, 0x039C, 0x036C, 0x034C, 0x032C, 0x030C, 0x02EC, 0x02CC, 0x02AC, 0x028C, 0x026C, 0x024C, 0x022C, 0x020C, 0x01EC, 0x01CC, 0x01AC, 0x018C, 0x0174, 0x0164, 0x0154, 0x0144, 0x0134, 0x0124, 0x0114, 0x0104, 0x00F4, 0x00E4, 0x00D4, 0x00C4, 0x00B4, 0x00A4, 0x0094, 0x0084, 0x0078, 0x0070, 0x0068, 0x0060, 0x0058, 0x0050, 0x0048, 0x0040, 0x0038, 0x0030, 0x0028, 0x0020, 0x0018, 0x0010, 0x0008, 0x0000, }; static inline short ulaw2linear(unsigned char u_val) { return (short)_u2l[u_val]; } #endif /* A-law to u-law conversion */ static inline unsigned char alaw2ulaw(unsigned char aval) { aval &= 0xff; return (unsigned char) ((aval & 0x80) ? (0xFF ^ _a2u[aval ^ 0xD5]) : (0x7F ^ _a2u[aval ^ 0x55])); } /* u-law to A-law conversion */ static inline unsigned char ulaw2alaw(unsigned char uval) { uval &= 0xff; return (uval & 0x80) ? (0xD5 ^ (_u2a[0xFF ^ uval] - 1)) : (0x55 ^ (_u2a[0x7F ^ uval] - 1)); } /* -------------------------------------------------------------------------------*/ static void cvtXXalaw16K(PACMDRVSTREAMINSTANCE adsi, const unsigned char* src, LPDWORD srcsize, unsigned char* dst, LPDWORD dstsize) { DWORD len = min(*srcsize, *dstsize / 2); DWORD i; short w; *srcsize = len; *dstsize = len * 2; for (i = 0; i < len; i++) { w = alaw2linear(*src++); W16(dst, w); dst += 2; } } static void cvtXX16alawK(PACMDRVSTREAMINSTANCE adsi, const unsigned char* src, LPDWORD srcsize, unsigned char* dst, LPDWORD dstsize) { DWORD len = min(*srcsize / 2, *dstsize); DWORD i; *srcsize = len * 2; *dstsize = len; for (i = 0; i < len; i++) { *dst++ = linear2alaw(R16(src)); src += 2; } } static void cvtXXulaw16K(PACMDRVSTREAMINSTANCE adsi, const unsigned char* src, LPDWORD srcsize, unsigned char* dst, LPDWORD dstsize) { DWORD len = min(*srcsize, *dstsize / 2); DWORD i; short w; *srcsize = len; *dstsize = len * 2; for (i = 0; i < len; i++) { w = ulaw2linear(*src++); W16(dst, w); dst += 2; } } static void cvtXX16ulawK(PACMDRVSTREAMINSTANCE adsi, const unsigned char* src, LPDWORD srcsize, unsigned char* dst, LPDWORD dstsize) { DWORD len = min(*srcsize / 2, *dstsize); DWORD i; *srcsize = len * 2; *dstsize = len; for (i = 0; i < len; i++) { *dst++ = linear2ulaw(R16(src)); src += 2; } } static void cvtXXalawulawK(PACMDRVSTREAMINSTANCE adsi, const unsigned char* src, LPDWORD srcsize, unsigned char* dst, LPDWORD dstsize) { DWORD len = min(*srcsize, *dstsize); DWORD i; *srcsize = len; *dstsize = len; for (i = 0; i < len; i++) *dst++ = alaw2ulaw(*src++); } static void cvtXXulawalawK(PACMDRVSTREAMINSTANCE adsi, const unsigned char* src, LPDWORD srcsize, unsigned char* dst, LPDWORD dstsize) { DWORD len = min(*srcsize, *dstsize); DWORD i; *srcsize = len; *dstsize = len; for (i = 0; i < len; i++) *dst++ = ulaw2alaw(*src++); } /*********************************************************************** * G711_DriverDetails * */ static LRESULT G711_DriverDetails(PACMDRIVERDETAILSW add) { add->fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC; add->fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED; add->wMid = MM_MICROSOFT; add->wPid = MM_MSFT_ACM_G711; add->vdwACM = 0x01000000; add->vdwDriver = 0x01000000; add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC; add->cFormatTags = 3; /* PCM, G711 A-LAW & MU-LAW */ add->cFilterTags = 0; add->hicon = NULL; MultiByteToWideChar( CP_ACP, 0, "Microsoft CCITT G.711", -1, add->szShortName, ARRAY_SIZE( add->szShortName )); MultiByteToWideChar( CP_ACP, 0, "Wine G711 converter", -1, add->szLongName, ARRAY_SIZE( add->szLongName )); MultiByteToWideChar( CP_ACP, 0, "Brought to you by the Wine team...", -1, add->szCopyright, ARRAY_SIZE( add->szCopyright )); MultiByteToWideChar( CP_ACP, 0, "Refer to LICENSE file", -1, add->szLicensing, ARRAY_SIZE( add->szLicensing )); add->szFeatures[0] = 0; return MMSYSERR_NOERROR; } /*********************************************************************** * G711_FormatTagDetails * */ static LRESULT G711_FormatTagDetails(PACMFORMATTAGDETAILSW aftd, DWORD dwQuery) { static const WCHAR szPcm[]={'P','C','M',0}; static const WCHAR szALaw[]={'A','-','L','a','w',0}; static const WCHAR szULaw[]={'U','-','L','a','w',0}; switch (dwQuery) { case ACM_FORMATTAGDETAILSF_INDEX: if (aftd->dwFormatTagIndex >= 3) return ACMERR_NOTPOSSIBLE; break; case ACM_FORMATTAGDETAILSF_LARGESTSIZE: if (aftd->dwFormatTag == WAVE_FORMAT_UNKNOWN) { aftd->dwFormatTagIndex = 1; break; } /* fall through */ case ACM_FORMATTAGDETAILSF_FORMATTAG: switch (aftd->dwFormatTag) { case WAVE_FORMAT_PCM: aftd->dwFormatTagIndex = 0; break; case WAVE_FORMAT_ALAW: aftd->dwFormatTagIndex = 1; break; case WAVE_FORMAT_MULAW: aftd->dwFormatTagIndex = 2; break; default: return ACMERR_NOTPOSSIBLE; } break; default: WARN("Unsupported query %08x\n", dwQuery); return MMSYSERR_NOTSUPPORTED; } aftd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC; switch (aftd->dwFormatTagIndex) { case 0: aftd->dwFormatTag = WAVE_FORMAT_PCM; aftd->cbFormatSize = sizeof(PCMWAVEFORMAT); aftd->cStandardFormats = ARRAY_SIZE(PCM_Formats); lstrcpyW(aftd->szFormatTag, szPcm); break; case 1: aftd->dwFormatTag = WAVE_FORMAT_ALAW; aftd->cbFormatSize = sizeof(WAVEFORMATEX); aftd->cStandardFormats = ARRAY_SIZE(ALaw_Formats); lstrcpyW(aftd->szFormatTag, szALaw); break; case 2: aftd->dwFormatTag = WAVE_FORMAT_MULAW; aftd->cbFormatSize = sizeof(WAVEFORMATEX); aftd->cStandardFormats = ARRAY_SIZE(ULaw_Formats); lstrcpyW(aftd->szFormatTag, szULaw); break; } return MMSYSERR_NOERROR; } /*********************************************************************** * G711_FormatDetails * */ static LRESULT G711_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery) { switch (dwQuery) { case ACM_FORMATDETAILSF_FORMAT: if (G711_GetFormatIndex(afd->pwfx) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE; break; case ACM_FORMATDETAILSF_INDEX: afd->pwfx->wFormatTag = afd->dwFormatTag; switch (afd->dwFormatTag) { case WAVE_FORMAT_PCM: if (afd->dwFormatIndex >= ARRAY_SIZE(PCM_Formats)) return ACMERR_NOTPOSSIBLE; afd->pwfx->nChannels = PCM_Formats[afd->dwFormatIndex].nChannels; afd->pwfx->nSamplesPerSec = PCM_Formats[afd->dwFormatIndex].rate; afd->pwfx->wBitsPerSample = PCM_Formats[afd->dwFormatIndex].nBits; afd->pwfx->nBlockAlign = afd->pwfx->nChannels * 2; afd->pwfx->nAvgBytesPerSec = afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign; break; case WAVE_FORMAT_ALAW: if (afd->dwFormatIndex >= ARRAY_SIZE(ALaw_Formats)) return ACMERR_NOTPOSSIBLE; afd->pwfx->nChannels = ALaw_Formats[afd->dwFormatIndex].nChannels; afd->pwfx->nSamplesPerSec = ALaw_Formats[afd->dwFormatIndex].rate; afd->pwfx->wBitsPerSample = ALaw_Formats[afd->dwFormatIndex].nBits; afd->pwfx->nBlockAlign = ALaw_Formats[afd->dwFormatIndex].nChannels; afd->pwfx->nAvgBytesPerSec = afd->pwfx->nSamplesPerSec * afd->pwfx->nChannels; afd->pwfx->cbSize = 0; break; case WAVE_FORMAT_MULAW: if (afd->dwFormatIndex >= ARRAY_SIZE(ULaw_Formats)) return ACMERR_NOTPOSSIBLE; afd->pwfx->nChannels = ULaw_Formats[afd->dwFormatIndex].nChannels; afd->pwfx->nSamplesPerSec = ULaw_Formats[afd->dwFormatIndex].rate; afd->pwfx->wBitsPerSample = ULaw_Formats[afd->dwFormatIndex].nBits; afd->pwfx->nBlockAlign = ULaw_Formats[afd->dwFormatIndex].nChannels; afd->pwfx->nAvgBytesPerSec = afd->pwfx->nSamplesPerSec * afd->pwfx->nChannels; afd->pwfx->cbSize = 0; break; default: WARN("Unsupported tag %08x\n", afd->dwFormatTag); return MMSYSERR_INVALPARAM; } break; default: WARN("Unsupported query %08x\n", dwQuery); return MMSYSERR_NOTSUPPORTED; } afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC; afd->szFormat[0] = 0; /* let MSACM format this for us... */ return MMSYSERR_NOERROR; } /*********************************************************************** * G711_FormatSuggest * */ static LRESULT G711_FormatSuggest(PACMDRVFORMATSUGGEST adfs) { /* some tests ... */ if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) || adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) || G711_GetFormatIndex(adfs->pwfxSrc) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE; /* FIXME: should do those tests against the real size (according to format tag */ /* If no suggestion for destination, then copy source value */ if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NCHANNELS)) adfs->pwfxDst->nChannels = adfs->pwfxSrc->nChannels; if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NSAMPLESPERSEC)) adfs->pwfxDst->nSamplesPerSec = adfs->pwfxSrc->nSamplesPerSec; if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WBITSPERSAMPLE)) { if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM) adfs->pwfxDst->wBitsPerSample = 8; else adfs->pwfxDst->wBitsPerSample = 16; } if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG)) { switch (adfs->pwfxSrc->wFormatTag) { case WAVE_FORMAT_PCM: adfs->pwfxDst->wFormatTag = WAVE_FORMAT_ALAW; break; case WAVE_FORMAT_ALAW: adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM; break; case WAVE_FORMAT_MULAW: adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM; break; } } /* check if result is ok */ if (G711_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE; /* recompute other values */ switch (adfs->pwfxDst->wFormatTag) { case WAVE_FORMAT_PCM: adfs->pwfxDst->nBlockAlign = adfs->pwfxDst->nChannels * 2; adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxDst->nBlockAlign; break; case WAVE_FORMAT_ALAW: adfs->pwfxDst->nBlockAlign = adfs->pwfxDst->nChannels; adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxSrc->nChannels; break; case WAVE_FORMAT_MULAW: adfs->pwfxDst->nBlockAlign = adfs->pwfxDst->nChannels; adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxSrc->nChannels; break; } return MMSYSERR_NOERROR; } /*********************************************************************** * G711_Reset * */ static void G711_Reset(PACMDRVSTREAMINSTANCE adsi, AcmG711Data* aad) { } /*********************************************************************** * G711_StreamOpen * */ static LRESULT G711_StreamOpen(PACMDRVSTREAMINSTANCE adsi) { AcmG711Data* aad; assert(!(adsi->fdwOpen & ACM_STREAMOPENF_ASYNC)); if (G711_GetFormatIndex(adsi->pwfxSrc) == 0xFFFFFFFF || G711_GetFormatIndex(adsi->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE; aad = HeapAlloc(GetProcessHeap(), 0, sizeof(AcmG711Data)); if (aad == 0) return MMSYSERR_NOMEM; adsi->dwDriver = (DWORD_PTR)aad; if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM && adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM) { goto theEnd; } else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ALAW && adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM) { /* resampling or mono <=> stereo not available * G711 algo only define 16 bit per sample output */ if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec || adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels || adsi->pwfxDst->wBitsPerSample != 16) goto theEnd; /* g711 A-Law decoding... */ if (adsi->pwfxDst->wBitsPerSample == 16) aad->convert = cvtXXalaw16K; } else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM && adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ALAW) { if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec || adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels || adsi->pwfxSrc->wBitsPerSample != 16) goto theEnd; /* g711 coding... */ if (adsi->pwfxSrc->wBitsPerSample == 16) aad->convert = cvtXX16alawK; } else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MULAW && adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM) { /* resampling or mono <=> stereo not available * G711 algo only define 16 bit per sample output */ if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec || adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels || adsi->pwfxDst->wBitsPerSample != 16) goto theEnd; /* g711 MU-Law decoding... */ if (adsi->pwfxDst->wBitsPerSample == 16) aad->convert = cvtXXulaw16K; } else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM && adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MULAW) { if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec || adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels || adsi->pwfxSrc->wBitsPerSample != 16) goto theEnd; /* g711 coding... */ if (adsi->pwfxSrc->wBitsPerSample == 16) aad->convert = cvtXX16ulawK; } else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MULAW && adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ALAW) { if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec || adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels) goto theEnd; /* MU-Law => A-Law... */ aad->convert = cvtXXulawalawK; } else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ALAW && adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MULAW) { if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec || adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels) goto theEnd; /* A-Law => MU-Law... */ aad->convert = cvtXXalawulawK; } else goto theEnd; G711_Reset(adsi, aad); return MMSYSERR_NOERROR; theEnd: HeapFree(GetProcessHeap(), 0, aad); adsi->dwDriver = 0L; return MMSYSERR_NOTSUPPORTED; } /*********************************************************************** * G711_StreamClose * */ static LRESULT G711_StreamClose(PACMDRVSTREAMINSTANCE adsi) { HeapFree(GetProcessHeap(), 0, (void*)adsi->dwDriver); return MMSYSERR_NOERROR; } /*********************************************************************** * G711_StreamSize * */ static LRESULT G711_StreamSize(const ACMDRVSTREAMINSTANCE *adsi, PACMDRVSTREAMSIZE adss) { switch (adss->fdwSize) { case ACM_STREAMSIZEF_DESTINATION: /* cbDstLength => cbSrcLength */ if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM && (adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ALAW || adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MULAW)) { adss->cbSrcLength = adss->cbDstLength * 2; } else if ((adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ALAW || adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MULAW) && adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM) { adss->cbSrcLength = adss->cbDstLength / 2; } else if ((adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ALAW || adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MULAW) && (adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ALAW || adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MULAW)) { adss->cbSrcLength = adss->cbDstLength; } else { return MMSYSERR_NOTSUPPORTED; } break; case ACM_STREAMSIZEF_SOURCE: /* cbSrcLength => cbDstLength */ if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM && (adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ALAW || adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MULAW)) { adss->cbDstLength = adss->cbSrcLength / 2; } else if ((adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ALAW || adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MULAW) && adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM) { adss->cbDstLength = adss->cbSrcLength * 2; } else if ((adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ALAW || adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MULAW) && (adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ALAW || adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MULAW)) { adss->cbDstLength = adss->cbSrcLength; } else { return MMSYSERR_NOTSUPPORTED; } break; default: WARN("Unsupported query %08x\n", adss->fdwSize); return MMSYSERR_NOTSUPPORTED; } return MMSYSERR_NOERROR; } /*********************************************************************** * G711_StreamConvert * */ static LRESULT G711_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh) { AcmG711Data* aad = (AcmG711Data*)adsi->dwDriver; DWORD nsrc = adsh->cbSrcLength; DWORD ndst = adsh->cbDstLength; if (adsh->fdwConvert & ~(ACM_STREAMCONVERTF_BLOCKALIGN| ACM_STREAMCONVERTF_END| ACM_STREAMCONVERTF_START)) { FIXME("Unsupported fdwConvert (%08x), ignoring it\n", adsh->fdwConvert); } /* ACM_STREAMCONVERTF_BLOCKALIGN * currently all conversions are block aligned, so do nothing for this flag * ACM_STREAMCONVERTF_END * no pending data, so do nothing for this flag */ if ((adsh->fdwConvert & ACM_STREAMCONVERTF_START)) { G711_Reset(adsi, aad); } aad->convert(adsi, adsh->pbSrc, &nsrc, adsh->pbDst, &ndst); adsh->cbSrcLengthUsed = nsrc; adsh->cbDstLengthUsed = ndst; return MMSYSERR_NOERROR; } /************************************************************************** * G711_DriverProc [exported] */ LRESULT CALLBACK G711_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg, LPARAM dwParam1, LPARAM dwParam2) { TRACE("(%08lx %p %04x %08lx %08lx);\n", dwDevID, hDriv, wMsg, dwParam1, dwParam2); switch (wMsg) { case DRV_LOAD: return 1; case DRV_FREE: return 1; case DRV_OPEN: return G711_drvOpen((LPSTR)dwParam1); case DRV_CLOSE: return G711_drvClose(dwDevID); case DRV_ENABLE: return 1; case DRV_DISABLE: return 1; case DRV_QUERYCONFIGURE: return 1; case DRV_CONFIGURE: MessageBoxA(0, "MS G711 (a-Law & mu-Law) filter !", "Wine Driver", MB_OK); return 1; case DRV_INSTALL: return DRVCNF_RESTART; case DRV_REMOVE: return DRVCNF_RESTART; case ACMDM_DRIVER_NOTIFY: /* no caching from other ACM drivers is done so far */ return MMSYSERR_NOERROR; case ACMDM_DRIVER_DETAILS: return G711_DriverDetails((PACMDRIVERDETAILSW)dwParam1); case ACMDM_FORMATTAG_DETAILS: return G711_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2); case ACMDM_FORMAT_DETAILS: return G711_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2); case ACMDM_FORMAT_SUGGEST: return G711_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1); case ACMDM_STREAM_OPEN: return G711_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1); case ACMDM_STREAM_CLOSE: return G711_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1); case ACMDM_STREAM_SIZE: return G711_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2); case ACMDM_STREAM_CONVERT: return G711_StreamConvert((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMHEADER)dwParam2); case ACMDM_HARDWARE_WAVE_CAPS_INPUT: case ACMDM_HARDWARE_WAVE_CAPS_OUTPUT: /* this converter is not a hardware driver */ case ACMDM_FILTERTAG_DETAILS: case ACMDM_FILTER_DETAILS: /* this converter is not a filter */ case ACMDM_STREAM_RESET: /* only needed for asynchronous driver... we aren't, so just say it */ return MMSYSERR_NOTSUPPORTED; case ACMDM_STREAM_PREPARE: case ACMDM_STREAM_UNPREPARE: /* nothing special to do here... so don't do anything */ return MMSYSERR_NOERROR; default: return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2); } }