audio flinger: add check in getInputBufferSize()

Make sure that the sample rate passed to getInputBufferSize()
is not 0 to avoid divide by 0 in destinationFramesPossible()

Also check the channel mask parameter for validity.

bug: 26866012
Change-Id: Ifabbf56cadb0db104f99230cacdba30e0c6a0a3a

parent da53ce37

services/audioflinger/AudioFlinger.cpp

+3 −1

Original line number	Diff line number	Diff line
		@@ -1161,7 +1161,9 @@ size_t AudioFlinger::getInputBufferSize(uint32_t sampleRate, audio_format_t form
		if (ret != NO_ERROR) {
		return 0;
		}
		if (!audio_is_valid_format(format) \|\| !audio_is_linear_pcm(format)) {
		if ((sampleRate == 0) \|\|
		!audio_is_valid_format(format) \|\| !audio_is_linear_pcm(format) \|\|
		!audio_is_input_channel(channelMask)) {
		return 0;
		}