Cross Reference: /frameworks/wilhelm/src/android/channels.cpp

Lines Matching refs:mask
24  * Return the default OpenSL ES output channel mask (as used in SLDataFormat_PCM.channelMask)
32     // FIXME channel mask is not yet implemented by Stagefright, so use a reasonable default
39         // see explanation in data.c re: default channel mask for mono
63  * Return the default OpenSL ES input channel mask (as used in SLDataFormat_PCM.channelMask)
88  * Get the number of active channels in an OpenSL ES channel mask.
93 SLuint32 sles_channel_count_from_mask(SLuint32 mask) {
95         = sles_to_audio_channel_mask_representation(mask);
98         mask &= SL_ANDROID_INDEXED_SPEAKER_MASK_ALL;
99         return popcount(mask);
101         mask &= SL_ANDROID_POSITIONAL_SPEAKER_MASK_ALL;
102         return popcount(mask);
109  * Helper to determine whether a channel mask is indexed or not.
113 audio_channel_representation_t sles_to_audio_channel_mask_representation(SLuint32 mask) {
114     if (mask & SL_ANDROID_SPEAKER_NON_POSITIONAL) {
162 // Core channel mask mapper; implementation common to both input and output
164         SLuint32 mask,
167     if (!sles_is_channel_mask_valid(mask)) {
168         SL_LOGW("Channel mask %#x is invalid because it uses bits that are undefined.", mask);
172     // determine whether this mask uses positional or indexed representation
173     audio_channel_representation_t rep = sles_to_audio_channel_mask_representation(mask);
176     uint32_t bitsIn = mask;
199         // At this point mask has already been stripped of the
206         SL_LOGW("Conversion from OpenSL ES %s channel mask %#x to Android mask %#x %s channels",
208                 mask,
217  * Return an android output channel mask, as used in the AudioTrack constructor.
219 audio_channel_mask_t sles_to_audio_output_channel_mask(SLuint32 mask) {
220     return sles_to_android_mask_helper(mask, output_map, nOutputChannelMappings);
224  * Return an android input channel mask, as used in the AudioRecord constructor.
226 audio_channel_mask_t sles_to_audio_input_channel_mask(SLuint32 mask) {
227     return sles_to_android_mask_helper(mask, input_map, nInputChannelMappings);
231  * Check the mask for undefined bits (that is, set bits that don't correspond to a channel).
235 SLboolean sles_is_channel_mask_valid(SLuint32 mask) {
237     if (sles_to_audio_channel_mask_representation(mask) == AUDIO_CHANNEL_REPRESENTATION_POSITION) {
243     return (mask & undefinedMask) ? SL_BOOLEAN_FALSE : SL_BOOLEAN_TRUE;