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annotate src/audio/SDL_wave.h @ 3099:82e60908fab1

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Date: Mon, 23 Mar 2009 09:17:24 +0200 From: "Mike Gorchak" Subject: New QNX patches Please apply patch qnx4.diff, which is attached. What has been done: 1)Added back OpenGL ES renderer for QNX target. Added few corrections to OpenGL ES renderer to let it work under QNX. OpenGL ES renderer do not support textures under QNX, so I think some additional work must be done. 2) Added GL_OES_query_matrix extension to SDL_opengles.h header file, which required by OpenGL ES 1.1 specification. 3) Added attribute clearing at the entrance of function SDL_GL_GetAttribure(). Added error checking into the function SDL_GL_GetAttribure(), because some attributes can't be obtained in OpenGL ES 1.0. 4) Porting testdyngles to OpenGL ES 1.0 (1.1 has glColor4ub() and glColor4f() functions, but 1.0 has glColor4f() only). 5) Added error checking after obtaining attributes using SDL_GL_GetAttribute() function to the testgl2 and testgles. 6) Small correction to testmultiaudio with printing errors. 7) Added software and accelerated OpenGL ES 1.0 support into the QNX GF driver. Please remove ./src/audio/nto directory - it will not be used anymore. Please create ./src/audio/qsa directory and add content of the archive qsa.tar.gz into this directory. I rewrote some sound code, added support for multiple audio cards, enumeration, etc. Added initial support for capture. As far as I can understand SDL 1.3 is not supporting audio capture right now ? Sam, Am I right ? Or audio capture must be supported through the PlayDevice routine ? And last, please put file SDL_gf_opengles.c to the ./src/video/qnxgf directory. It is OpenGL ES 1.1 emulation layer for some functions, which are not supported by OpenGL ES 1.0.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 24 Mar 2009 10:33:12 +0000
parents 99210400e8b9
children f7b03b6838cb
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is SDL_free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* WAVE files are little-endian */
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25
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26 /*******************************************/
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27 /* Define values for Microsoft WAVE format */
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28 /*******************************************/
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29 #define RIFF 0x46464952 /* "RIFF" */
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30 #define WAVE 0x45564157 /* "WAVE" */
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31 #define FACT 0x74636166 /* "fact" */
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32 #define LIST 0x5453494c /* "LIST" */
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33 #define FMT 0x20746D66 /* "fmt " */
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34 #define DATA 0x61746164 /* "data" */
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35 #define PCM_CODE 0x0001
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36 #define MS_ADPCM_CODE 0x0002
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37 #define IEEE_FLOAT_CODE 0x0003
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38 #define IMA_ADPCM_CODE 0x0011
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39 #define MP3_CODE 0x0055
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40 #define WAVE_MONO 1
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41 #define WAVE_STEREO 2
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42
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43 /* Normally, these three chunks come consecutively in a WAVE file */
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44 typedef struct WaveFMT
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45 {
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46 /* Not saved in the chunk we read:
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47 Uint32 FMTchunk;
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48 Uint32 fmtlen;
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49 */
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50 Uint16 encoding;
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51 Uint16 channels; /* 1 = mono, 2 = stereo */
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52 Uint32 frequency; /* One of 11025, 22050, or 44100 Hz */
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53 Uint32 byterate; /* Average bytes per second */
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54 Uint16 blockalign; /* Bytes per sample block */
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55 Uint16 bitspersample; /* One of 8, 12, 16, or 4 for ADPCM */
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56 } WaveFMT;
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57
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58 /* The general chunk found in the WAVE file */
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59 typedef struct Chunk
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60 {
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61 Uint32 magic;
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62 Uint32 length;
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63 Uint8 *data;
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64 } Chunk;
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65 /* vi: set ts=4 sw=4 expandtab: */