Mercurial > fife-parpg
annotate engine/core/audio/sounddecoder.h @ 629:e37469251b22
* Removed some more unused files
author | prock@33b003aa-7bff-0310-803a-e67f0ece8222 |
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date | Mon, 04 Oct 2010 20:52:06 +0000 |
parents | 64738befdf3b |
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rev | line source |
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1 /*************************************************************************** |
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2 * Copyright (C) 2005-2008 by the FIFE team * |
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3 * http://www.fifengine.de * |
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4 * This file is part of FIFE. * |
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5 * * |
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6 * FIFE is free software; you can redistribute it and/or * |
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7 * modify it under the terms of the GNU Lesser General Public * |
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8 * License as published by the Free Software Foundation; either * |
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9 * version 2.1 of the License, or (at your option) any later version. * |
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10 * * |
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11 * This library is distributed in the hope that it will be useful, * |
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * |
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14 * Lesser General Public License for more details. * |
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15 * * |
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16 * You should have received a copy of the GNU Lesser General Public * |
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17 * License along with this library; if not, write to the * |
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18 * Free Software Foundation, Inc., * |
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * |
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20 ***************************************************************************/ |
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21 |
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22 #ifndef FIFE_SOUNDDECODER_H |
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23 #define FIFE_SOUNDDECODER_H |
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24 |
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25 // Standard C++ library includes |
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26 |
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27 // Platform specific includes |
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28 |
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29 // 3rd party library includes |
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30 |
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31 // FIFE includes |
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32 // These includes are split up in two parts, separated by one empty line |
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33 // First block: files included from the FIFE root src directory |
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34 // Second block: files included from the same folder |
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35 |
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36 #include "soundconfig.h" |
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37 #include "fife_openal.h" |
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38 |
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39 namespace FIFE { |
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40 |
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41 class SoundDecoder { |
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42 public: |
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43 |
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44 virtual ~SoundDecoder() {} |
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45 |
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46 /** Returns the decoded length of the file in bytes |
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47 */ |
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48 virtual unsigned long getDecodedLength() const = 0; |
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49 |
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50 /** A stream or not? |
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51 * |
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52 * The decision if we decode the whole audio file in one buffer or use a |
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53 * kind of streaming depends on the value of MAX_KEEP_IN_MEM from |
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54 * soundconfig.h |
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55 * |
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56 * @return Return true for a streaming decoder, false if the sound is |
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57 * decoded in one buffer |
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58 */ |
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59 bool needsStreaming() const { return getDecodedLength() > MAX_KEEP_IN_MEM; } |
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60 |
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61 /** Sets the current position in the file (in bytes) |
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62 * |
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63 * @return 0 (False), if the positioning was successful |
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64 */ |
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65 virtual bool setCursor(unsigned long pos) = 0; |
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66 |
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67 /** Request the decoding of the next part of the stream. |
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68 * |
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69 * @param length The length of the decoded part |
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70 * @return 0 (False), if decoding was successful |
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71 */ |
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72 virtual bool decode(unsigned long length) = 0; |
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73 |
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74 /** Returns the next decoded buffer. |
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75 * |
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76 * The length of the buffer is returned by getBufferSize(). |
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77 */ |
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78 virtual void *getBuffer() const = 0; |
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79 |
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80 /** Returns the byte-size of the buffer returned by getBuffer(). |
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81 */ |
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82 virtual unsigned long getBufferSize() = 0; |
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83 |
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84 /** Releases the buffer returned by getBuffer() |
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85 */ |
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86 virtual void releaseBuffer() = 0; |
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87 |
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88 /** Tests if the audio data is stereo data or mono. |
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89 * |
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90 * @return Returns true if the audio data is stereo, false if mono. |
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91 */ |
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92 bool isStereo() const { |
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93 return m_isstereo; |
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94 } |
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95 |
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96 /** Returns the openAL-Format of the audio file |
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97 */ |
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98 ALenum getALFormat() const { |
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99 if (m_isstereo) { |
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100 return m_is8bit ? AL_FORMAT_STEREO8 : AL_FORMAT_STEREO16; |
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101 } else { |
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102 return m_is8bit ? AL_FORMAT_MONO8 : AL_FORMAT_MONO16; |
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103 } |
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104 } |
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105 |
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106 /** Returns the bit resolution |
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107 */ |
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bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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108 short getBitResolution() const { |
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109 return m_is8bit ? 8 : 16; |
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110 } |
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111 |
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112 /** Returns the sample rate |
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113 */ |
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bringing in the changes from the build_system_rework branch in preparation for the 0.3.0 release. This commit will require the Jan2010 devkit. Clients will also need to be modified to the new way to import fife.
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114 unsigned long getSampleRate() const{ |
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115 return m_samplerate; |
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116 } |
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117 |
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118 protected: |
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119 bool m_isstereo; |
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120 bool m_is8bit; |
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121 unsigned long m_samplerate; |
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122 }; |
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123 } |
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124 |
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125 #endif |