Function UpdateFormat

Source/Engine/Video/Android/VideoBackendAndroid.cpp:118–177

    }

    void UpdateFormat(VideoBackendPlayer& player, VideoPlayerAndroid& playerAndroid, AMediaCodec* codec, AMediaFormat* format)
    {
        const bool isVideo = codec == playerAndroid.VideoCodec;
        const bool isAudio = codec == playerAndroid.AudioCodec;
        if (isVideo)
        {
            int32_t frameWidth = 0, frameHeight = 0, frameRate = 0, colorFormat = 0, stride = 0;
            float frameRateF = 0.0f;
            AMediaFormat_getInt32(format, AMEDIAFORMAT_KEY_WIDTH, &frameWidth);
            AMediaFormat_getInt32(format, AMEDIAFORMAT_KEY_HEIGHT, &frameHeight);
            if (AMediaFormat_getInt32(format, AMEDIAFORMAT_KEY_FRAME_RATE, &frameRate) && frameRate > 0)
                player.FrameRate = (float)frameRate;
            else if (AMediaFormat_getFloat(format, AMEDIAFORMAT_KEY_FRAME_RATE, &frameRateF) && frameRateF > 0)
                player.FrameRate = frameRateF;
            else
                player.FrameRate = 60;
            AMediaFormat_getInt32(format, AMEDIAFORMAT_KEY_STRIDE, &stride);
            playerAndroid.VideoStride = stride;
            player.Width = player.VideoFrameWidth = frameWidth;
            player.Height = player.VideoFrameHeight = frameHeight;
            AMediaFormat_getInt32(format, AMEDIAFORMAT_KEY_COLOR_FORMAT, &colorFormat);
            switch (colorFormat)
            {
            case COLOR_Format32bitABGR8888:
                player.Format = PixelFormat::R8G8B8A8_UNorm;
                break;
            case COLOR_Format32bitBGRA8888:
                player.Format = PixelFormat::B8G8R8A8_UNorm;
                break;
            case COLOR_FormatYUV420SemiPlanar:
                player.Format = PixelFormat::NV12;
                break;
            case COLOR_FormatYUV422SemiPlanar:
                player.Format = PixelFormat::YUY2;
                break;
            default:
                player.Format = PixelFormat::Unknown;
                LOG(Error, "[VideoBackendAndroid] Unsupported video color format {}", colorFormat);
                break;
            }
#if VIDEO_API_ANDROID_DEBUG
            LOG(Info, "[VideoBackendAndroid] Video track: {}x{}, {}fps", player.Width, player.Height, player.FrameRate);
#endif
        }
        else if (isAudio)
        {
            int32_t sampleRate = 0, channelCount = 0, bitsPerSample = 0;
            AMediaFormat_getInt32(format, AMEDIAFORMAT_KEY_SAMPLE_RATE, &sampleRate);
            AMediaFormat_getInt32(format, AMEDIAFORMAT_KEY_CHANNEL_COUNT, &channelCount);
            player.AudioInfo.SampleRate = sampleRate;
            player.AudioInfo.NumChannels = channelCount;
            if (AMediaFormat_getInt32(format, "bits-per-sample", &bitsPerSample) && bitsPerSample > 0)
                player.AudioInfo.BitDepth = bitsPerSample;
            else
                player.AudioInfo.BitDepth = 16;
#if VIDEO_API_ANDROID_DEBUG
            LOG(Info, "[VideoBackendAndroid] Audio track: {} channels, {} bits, {} kHz sample rate", player.AudioInfo.NumChannels, player.AudioInfo.BitDepth, player.AudioInfo.SampleRate / 1000);
#endif