Merge "AudioPolicyManager: improve selectOutput functional flag matching"

    // The priority is as follows:

    // 1: the output supporting haptic playback when requesting haptic playback

    // 2: the output with the highest number of requested functional flags

    //    with tiebreak preferring the minimum number of extra functional flags

    //    (see b/200293124, the incorrect selection of AUDIO_OUTPUT_FLAG_VOIP_RX).

    // 3: the output supporting the exact channel mask

    // 4: the output with a higher channel count than requested

    // 5: the output with a higher sampling rate than requested

        }

        // functional flags match

        currentMatchCriteria[1] = popcount(outputDesc->mFlags & functionalFlags);

        const int matchingFunctionalFlags =

                __builtin_popcount(outputDesc->mFlags & functionalFlags);

        const int totalFunctionalFlags =

                __builtin_popcount(outputDesc->mFlags & kFunctionalFlags);

        // Prefer matching functional flags, but subtract unnecessary functional flags.

        currentMatchCriteria[1] = 100 * (matchingFunctionalFlags + 1) - totalFunctionalFlags;

        // channel mask and channel count match

        uint32_t outputChannelCount = audio_channel_count_from_out_mask(