annotate vamp-sdk/hostext/PluginChannelAdapter.cpp @ 84:af0d86b8b692

* Fix failure to default correctly if plugin output unspecified
author cannam
date Fri, 28 Sep 2007 09:53:46 +0000
parents 64697dca0d48
children fe30a25ee4f8
rev   line source
cannam@64 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
cannam@64 2
cannam@64 3 /*
cannam@64 4 Vamp
cannam@64 5
cannam@64 6 An API for audio analysis and feature extraction plugins.
cannam@64 7
cannam@64 8 Centre for Digital Music, Queen Mary, University of London.
cannam@71 9 Copyright 2006-2007 Chris Cannam and QMUL.
cannam@64 10
cannam@64 11 Permission is hereby granted, free of charge, to any person
cannam@64 12 obtaining a copy of this software and associated documentation
cannam@64 13 files (the "Software"), to deal in the Software without
cannam@64 14 restriction, including without limitation the rights to use, copy,
cannam@64 15 modify, merge, publish, distribute, sublicense, and/or sell copies
cannam@64 16 of the Software, and to permit persons to whom the Software is
cannam@64 17 furnished to do so, subject to the following conditions:
cannam@64 18
cannam@64 19 The above copyright notice and this permission notice shall be
cannam@64 20 included in all copies or substantial portions of the Software.
cannam@64 21
cannam@64 22 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
cannam@64 23 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
cannam@64 24 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
cannam@64 25 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
cannam@64 26 ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
cannam@64 27 CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
cannam@64 28 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
cannam@64 29
cannam@64 30 Except as contained in this notice, the names of the Centre for
cannam@64 31 Digital Music; Queen Mary, University of London; and Chris Cannam
cannam@64 32 shall not be used in advertising or otherwise to promote the sale,
cannam@64 33 use or other dealings in this Software without prior written
cannam@64 34 authorization.
cannam@64 35 */
cannam@64 36
cannam@64 37 #include "PluginChannelAdapter.h"
cannam@64 38
cannam@64 39 namespace Vamp {
cannam@64 40
cannam@64 41 namespace HostExt {
cannam@64 42
cannam@70 43 class PluginChannelAdapter::Impl
cannam@70 44 {
cannam@70 45 public:
cannam@70 46 Impl(Plugin *plugin);
cannam@70 47 ~Impl();
cannam@70 48
cannam@70 49 bool initialise(size_t channels, size_t stepSize, size_t blockSize);
cannam@70 50
cannam@70 51 FeatureSet process(const float *const *inputBuffers, RealTime timestamp);
cannam@70 52
cannam@70 53 protected:
cannam@70 54 Plugin *m_plugin;
cannam@70 55 size_t m_blockSize;
cannam@70 56 size_t m_inputChannels;
cannam@70 57 size_t m_pluginChannels;
cannam@70 58 float **m_buffer;
cannam@70 59 const float **m_forwardPtrs;
cannam@70 60 };
cannam@70 61
cannam@64 62 PluginChannelAdapter::PluginChannelAdapter(Plugin *plugin) :
cannam@70 63 PluginWrapper(plugin)
cannam@70 64 {
cannam@70 65 m_impl = new Impl(plugin);
cannam@70 66 }
cannam@70 67
cannam@70 68 PluginChannelAdapter::~PluginChannelAdapter()
cannam@70 69 {
cannam@70 70 delete m_impl;
cannam@70 71 }
cannam@70 72
cannam@70 73 bool
cannam@70 74 PluginChannelAdapter::initialise(size_t channels, size_t stepSize, size_t blockSize)
cannam@70 75 {
cannam@70 76 return m_impl->initialise(channels, stepSize, blockSize);
cannam@70 77 }
cannam@70 78
cannam@70 79 PluginChannelAdapter::FeatureSet
cannam@70 80 PluginChannelAdapter::process(const float *const *inputBuffers,
cannam@70 81 RealTime timestamp)
cannam@70 82 {
cannam@70 83 return m_impl->process(inputBuffers, timestamp);
cannam@70 84 }
cannam@70 85
cannam@70 86 PluginChannelAdapter::Impl::Impl(Plugin *plugin) :
cannam@70 87 m_plugin(plugin),
cannam@64 88 m_blockSize(0),
cannam@64 89 m_inputChannels(0),
cannam@64 90 m_pluginChannels(0),
cannam@64 91 m_buffer(0),
cannam@64 92 m_forwardPtrs(0)
cannam@64 93 {
cannam@64 94 }
cannam@64 95
cannam@70 96 PluginChannelAdapter::Impl::~Impl()
cannam@64 97 {
cannam@70 98 // the adapter will delete the plugin
cannam@70 99
cannam@64 100 if (m_buffer) {
cannam@64 101 if (m_inputChannels > m_pluginChannels) {
cannam@64 102 delete[] m_buffer[0];
cannam@64 103 } else {
cannam@64 104 for (size_t i = 0; i < m_pluginChannels - m_inputChannels; ++i) {
cannam@64 105 delete[] m_buffer[i];
cannam@64 106 }
cannam@64 107 }
cannam@64 108 delete[] m_buffer;
cannam@64 109 m_buffer = 0;
cannam@64 110 }
cannam@64 111
cannam@64 112 if (m_forwardPtrs) {
cannam@64 113 delete[] m_forwardPtrs;
cannam@64 114 m_forwardPtrs = 0;
cannam@64 115 }
cannam@64 116 }
cannam@64 117
cannam@64 118 bool
cannam@70 119 PluginChannelAdapter::Impl::initialise(size_t channels, size_t stepSize, size_t blockSize)
cannam@64 120 {
cannam@64 121 m_blockSize = blockSize;
cannam@64 122
cannam@64 123 size_t minch = m_plugin->getMinChannelCount();
cannam@64 124 size_t maxch = m_plugin->getMaxChannelCount();
cannam@64 125
cannam@64 126 m_inputChannels = channels;
cannam@64 127
cannam@64 128 if (m_inputChannels < minch) {
cannam@64 129
cannam@64 130 m_forwardPtrs = new const float *[minch];
cannam@64 131
cannam@64 132 if (m_inputChannels > 1) {
cannam@64 133 // We need a set of zero-valued buffers to add to the
cannam@64 134 // forwarded pointers
cannam@64 135 m_buffer = new float*[minch - channels];
cannam@64 136 for (size_t i = 0; i < minch; ++i) {
cannam@64 137 m_buffer[i] = new float[blockSize];
cannam@64 138 for (size_t j = 0; j < blockSize; ++j) {
cannam@64 139 m_buffer[i][j] = 0.f;
cannam@64 140 }
cannam@64 141 }
cannam@64 142 }
cannam@64 143
cannam@64 144 m_pluginChannels = minch;
cannam@64 145
cannam@64 146 std::cerr << "PluginChannelAdapter::initialise: expanding " << m_inputChannels << " to " << m_pluginChannels << " for plugin" << std::endl;
cannam@64 147
cannam@64 148 } else if (m_inputChannels > maxch) {
cannam@64 149
cannam@64 150 // We only need m_buffer if we are mixing down to a single
cannam@64 151 // channel -- otherwise we can just forward the same float* as
cannam@64 152 // passed in to process(), expecting the excess to be ignored
cannam@64 153
cannam@64 154 if (maxch == 1) {
cannam@64 155 m_buffer = new float *[1];
cannam@64 156 m_buffer[0] = new float[blockSize];
cannam@64 157
cannam@64 158 std::cerr << "PluginChannelAdapter::initialise: mixing " << m_inputChannels << " to mono for plugin" << std::endl;
cannam@64 159
cannam@64 160 } else {
cannam@64 161
cannam@64 162 std::cerr << "PluginChannelAdapter::initialise: reducing " << m_inputChannels << " to " << m_pluginChannels << " for plugin" << std::endl;
cannam@64 163 }
cannam@64 164
cannam@64 165 m_pluginChannels = maxch;
cannam@64 166
cannam@64 167 } else {
cannam@64 168
cannam@64 169 std::cerr << "PluginChannelAdapter::initialise: accepting given number of channels (" << m_inputChannels << ")" << std::endl;
cannam@64 170 m_pluginChannels = m_inputChannels;
cannam@64 171 }
cannam@64 172
cannam@64 173 return m_plugin->initialise(m_pluginChannels, stepSize, blockSize);
cannam@64 174 }
cannam@64 175
cannam@64 176 PluginChannelAdapter::FeatureSet
cannam@70 177 PluginChannelAdapter::Impl::process(const float *const *inputBuffers,
cannam@70 178 RealTime timestamp)
cannam@64 179 {
cannam@65 180 // std::cerr << "PluginChannelAdapter::process: " << m_inputChannels << " -> " << m_pluginChannels << " channels" << std::endl;
cannam@64 181
cannam@64 182 if (m_inputChannels < m_pluginChannels) {
cannam@64 183
cannam@64 184 if (m_inputChannels == 1) {
cannam@64 185 for (size_t i = 0; i < m_pluginChannels; ++i) {
cannam@64 186 m_forwardPtrs[i] = inputBuffers[0];
cannam@64 187 }
cannam@64 188 } else {
cannam@64 189 for (size_t i = 0; i < m_inputChannels; ++i) {
cannam@64 190 m_forwardPtrs[i] = inputBuffers[i];
cannam@64 191 }
cannam@64 192 for (size_t i = m_inputChannels; i < m_pluginChannels; ++i) {
cannam@64 193 m_forwardPtrs[i] = m_buffer[i - m_inputChannels];
cannam@64 194 }
cannam@64 195 }
cannam@64 196
cannam@64 197 return m_plugin->process(m_forwardPtrs, timestamp);
cannam@64 198
cannam@64 199 } else if (m_inputChannels > m_pluginChannels) {
cannam@64 200
cannam@64 201 if (m_pluginChannels == 1) {
cannam@64 202 for (size_t j = 0; j < m_blockSize; ++j) {
cannam@64 203 m_buffer[0][j] = inputBuffers[0][j];
cannam@64 204 }
cannam@64 205 for (size_t i = 1; i < m_inputChannels; ++i) {
cannam@64 206 for (size_t j = 0; j < m_blockSize; ++j) {
cannam@64 207 m_buffer[0][j] += inputBuffers[i][j];
cannam@64 208 }
cannam@64 209 }
cannam@64 210 for (size_t j = 0; j < m_blockSize; ++j) {
cannam@64 211 m_buffer[0][j] /= m_inputChannels;
cannam@64 212 }
cannam@64 213 return m_plugin->process(m_buffer, timestamp);
cannam@64 214 } else {
cannam@64 215 return m_plugin->process(inputBuffers, timestamp);
cannam@64 216 }
cannam@64 217
cannam@64 218 } else {
cannam@64 219
cannam@64 220 return m_plugin->process(inputBuffers, timestamp);
cannam@64 221 }
cannam@64 222 }
cannam@64 223
cannam@64 224 }
cannam@64 225
cannam@64 226 }
cannam@64 227
cannam@64 228