0632bad8ba
Always read and write track volumes atomically. In most places this was already being done, but there were a couple places where the left and right channels were read independently. Changed constant MAX_GAIN_INT to be a uint32_t instead of a float. It is always used as a uint32_t in comparisons and assignments. Use MAX_GAIN_INT in more places. Now that volume is always accessed atomically, removed the union and alias for uint16_t volume[2], and kept only volumeLR. Removed volatile as it's meaningless. In AudioFlinger, clamp the track volumes read from shared memory before applying master and stream volume. Change-Id: If65e2b27e5bc3db5bf75540479843041b58433f0