Examples with TrackSelection com.google.android.exoplayer2.trackselection.TrackSelection used on opensource projects

Example 16 with TrackSelection

use of com.google.android.exoplayer2.trackselection.TrackSelection in project ExoPlayer by google.

the class DefaultTrackSelector method selectFixedVideoTrack.

private static TrackSelection selectFixedVideoTrack(TrackGroupArray groups, int[][] formatSupport, int maxVideoWidth, int maxVideoHeight, int maxVideoBitrate, int viewportWidth, int viewportHeight, boolean orientationMayChange, boolean exceedConstraintsIfNecessary, boolean exceedRendererCapabilitiesIfNecessary) {
    TrackGroup selectedGroup = null;
    int selectedTrackIndex = 0;
    int selectedTrackScore = 0;
    int selectedBitrate = Format.NO_VALUE;
    int selectedPixelCount = Format.NO_VALUE;
    for (int groupIndex = 0; groupIndex < groups.length; groupIndex++) {
        TrackGroup trackGroup = groups.get(groupIndex);
        List<Integer> selectedTrackIndices = getViewportFilteredTrackIndices(trackGroup, viewportWidth, viewportHeight, orientationMayChange);
        int[] trackFormatSupport = formatSupport[groupIndex];
        for (int trackIndex = 0; trackIndex < trackGroup.length; trackIndex++) {
            if (isSupported(trackFormatSupport[trackIndex], exceedRendererCapabilitiesIfNecessary)) {
                Format format = trackGroup.getFormat(trackIndex);
                boolean isWithinConstraints = selectedTrackIndices.contains(trackIndex) && (format.width == Format.NO_VALUE || format.width <= maxVideoWidth) && (format.height == Format.NO_VALUE || format.height <= maxVideoHeight) && (format.bitrate == Format.NO_VALUE || format.bitrate <= maxVideoBitrate);
                if (!isWithinConstraints && !exceedConstraintsIfNecessary) {
                    // Track should not be selected.
                    continue;
                }
                int trackScore = isWithinConstraints ? 2 : 1;
                if (isSupported(trackFormatSupport[trackIndex], false)) {
                    trackScore += WITHIN_RENDERER_CAPABILITIES_BONUS;
                }
                boolean selectTrack = trackScore > selectedTrackScore;
                if (trackScore == selectedTrackScore) {
                    // Use the pixel count as a tie breaker (or bitrate if pixel counts are tied). If we're
                    // within constraints prefer a higher pixel count (or bitrate), else prefer a lower
                    // count (or bitrate). If still tied then prefer the first track (i.e. the one that's
                    // already selected).
                    int comparisonResult;
                    int formatPixelCount = format.getPixelCount();
                    if (formatPixelCount != selectedPixelCount) {
                        comparisonResult = compareFormatValues(format.getPixelCount(), selectedPixelCount);
                    } else {
                        comparisonResult = compareFormatValues(format.bitrate, selectedBitrate);
                    }
                    selectTrack = isWithinConstraints ? comparisonResult > 0 : comparisonResult < 0;
                }
                if (selectTrack) {
                    selectedGroup = trackGroup;
                    selectedTrackIndex = trackIndex;
                    selectedTrackScore = trackScore;
                    selectedBitrate = format.bitrate;
                    selectedPixelCount = format.getPixelCount();
                }
            }
        }
    }
    return selectedGroup == null ? null : new FixedTrackSelection(selectedGroup, selectedTrackIndex);
}

Example 17 with TrackSelection

use of com.google.android.exoplayer2.trackselection.TrackSelection in project ExoPlayer by google.

the class MappingTrackSelector method maybeConfigureRenderersForTunneling.

/**
   * Determines whether tunneling should be enabled, replacing {@link RendererConfiguration}s in
   * {@code rendererConfigurations} with configurations that enable tunneling on the appropriate
   * renderers if so.
   *
   * @param rendererCapabilities The {@link RendererCapabilities} of the renderers for which
   *     {@link TrackSelection}s are to be generated.
   * @param rendererTrackGroupArrays An array of {@link TrackGroupArray}s where each entry
   *     corresponds to the renderer of equal index in {@code renderers}.
   * @param rendererFormatSupports Maps every available track to a specific level of support as
   *     defined by the renderer {@code FORMAT_*} constants.
   * @param rendererConfigurations The renderer configurations. Configurations may be replaced with
   *     ones that enable tunneling as a result of this call.
   * @param trackSelections The renderer track selections.
   * @param tunnelingAudioSessionId The audio session id to use when tunneling, or
   *     {@link C#AUDIO_SESSION_ID_UNSET} if tunneling should not be enabled.
   */
private static void maybeConfigureRenderersForTunneling(RendererCapabilities[] rendererCapabilities, TrackGroupArray[] rendererTrackGroupArrays, int[][][] rendererFormatSupports, RendererConfiguration[] rendererConfigurations, TrackSelection[] trackSelections, int tunnelingAudioSessionId) {
    if (tunnelingAudioSessionId == C.AUDIO_SESSION_ID_UNSET) {
        return;
    }
    // Check whether we can enable tunneling. To enable tunneling we require exactly one audio and
    // one video renderer to support tunneling and have a selection.
    int tunnelingAudioRendererIndex = -1;
    int tunnelingVideoRendererIndex = -1;
    boolean enableTunneling = true;
    for (int i = 0; i < rendererCapabilities.length; i++) {
        int rendererType = rendererCapabilities[i].getTrackType();
        TrackSelection trackSelection = trackSelections[i];
        if ((rendererType == C.TRACK_TYPE_AUDIO || rendererType == C.TRACK_TYPE_VIDEO) && trackSelection != null) {
            if (rendererSupportsTunneling(rendererFormatSupports[i], rendererTrackGroupArrays[i], trackSelection)) {
                if (rendererType == C.TRACK_TYPE_AUDIO) {
                    if (tunnelingAudioRendererIndex != -1) {
                        enableTunneling = false;
                        break;
                    } else {
                        tunnelingAudioRendererIndex = i;
                    }
                } else {
                    if (tunnelingVideoRendererIndex != -1) {
                        enableTunneling = false;
                        break;
                    } else {
                        tunnelingVideoRendererIndex = i;
                    }
                }
            }
        }
    }
    enableTunneling &= tunnelingAudioRendererIndex != -1 && tunnelingVideoRendererIndex != -1;
    if (enableTunneling) {
        RendererConfiguration tunnelingRendererConfiguration = new RendererConfiguration(tunnelingAudioSessionId);
        rendererConfigurations[tunnelingAudioRendererIndex] = tunnelingRendererConfiguration;
        rendererConfigurations[tunnelingVideoRendererIndex] = tunnelingRendererConfiguration;
    }
}

Example 18 with TrackSelection

use of com.google.android.exoplayer2.trackselection.TrackSelection in project ExoPlayer by google.

the class MappingTrackSelector method selectTracks.

// TrackSelector implementation.
@Override
public final TrackSelectorResult selectTracks(RendererCapabilities[] rendererCapabilities, TrackGroupArray trackGroups) throws ExoPlaybackException {
    // Structures into which data will be written during the selection. The extra item at the end
    // of each array is to store data associated with track groups that cannot be associated with
    // any renderer.
    int[] rendererTrackGroupCounts = new int[rendererCapabilities.length + 1];
    TrackGroup[][] rendererTrackGroups = new TrackGroup[rendererCapabilities.length + 1][];
    int[][][] rendererFormatSupports = new int[rendererCapabilities.length + 1][][];
    for (int i = 0; i < rendererTrackGroups.length; i++) {
        rendererTrackGroups[i] = new TrackGroup[trackGroups.length];
        rendererFormatSupports[i] = new int[trackGroups.length][];
    }
    // Determine the extent to which each renderer supports mixed mimeType adaptation.
    int[] mixedMimeTypeAdaptationSupport = getMixedMimeTypeAdaptationSupport(rendererCapabilities);
    // renderer provides for each track in the group.
    for (int groupIndex = 0; groupIndex < trackGroups.length; groupIndex++) {
        TrackGroup group = trackGroups.get(groupIndex);
        // Associate the group to a preferred renderer.
        int rendererIndex = findRenderer(rendererCapabilities, group);
        // Evaluate the support that the renderer provides for each track in the group.
        int[] rendererFormatSupport = rendererIndex == rendererCapabilities.length ? new int[group.length] : getFormatSupport(rendererCapabilities[rendererIndex], group);
        // Stash the results.
        int rendererTrackGroupCount = rendererTrackGroupCounts[rendererIndex];
        rendererTrackGroups[rendererIndex][rendererTrackGroupCount] = group;
        rendererFormatSupports[rendererIndex][rendererTrackGroupCount] = rendererFormatSupport;
        rendererTrackGroupCounts[rendererIndex]++;
    }
    // Create a track group array for each renderer, and trim each rendererFormatSupports entry.
    TrackGroupArray[] rendererTrackGroupArrays = new TrackGroupArray[rendererCapabilities.length];
    int[] rendererTrackTypes = new int[rendererCapabilities.length];
    for (int i = 0; i < rendererCapabilities.length; i++) {
        int rendererTrackGroupCount = rendererTrackGroupCounts[i];
        rendererTrackGroupArrays[i] = new TrackGroupArray(Arrays.copyOf(rendererTrackGroups[i], rendererTrackGroupCount));
        rendererFormatSupports[i] = Arrays.copyOf(rendererFormatSupports[i], rendererTrackGroupCount);
        rendererTrackTypes[i] = rendererCapabilities[i].getTrackType();
    }
    // Create a track group array for track groups not associated with a renderer.
    int unassociatedTrackGroupCount = rendererTrackGroupCounts[rendererCapabilities.length];
    TrackGroupArray unassociatedTrackGroupArray = new TrackGroupArray(Arrays.copyOf(rendererTrackGroups[rendererCapabilities.length], unassociatedTrackGroupCount));
    TrackSelection[] trackSelections = selectTracks(rendererCapabilities, rendererTrackGroupArrays, rendererFormatSupports);
    // Apply track disabling and overriding.
    for (int i = 0; i < rendererCapabilities.length; i++) {
        if (rendererDisabledFlags.get(i)) {
            trackSelections[i] = null;
        } else {
            TrackGroupArray rendererTrackGroup = rendererTrackGroupArrays[i];
            Map<TrackGroupArray, SelectionOverride> overrides = selectionOverrides.get(i);
            SelectionOverride override = overrides == null ? null : overrides.get(rendererTrackGroup);
            if (override != null) {
                trackSelections[i] = override.createTrackSelection(rendererTrackGroup);
            }
        }
    }
    // Package up the track information and selections.
    MappedTrackInfo mappedTrackInfo = new MappedTrackInfo(rendererTrackTypes, rendererTrackGroupArrays, mixedMimeTypeAdaptationSupport, rendererFormatSupports, unassociatedTrackGroupArray);
    // Initialize the renderer configurations to the default configuration for all renderers with
    // selections, and null otherwise.
    RendererConfiguration[] rendererConfigurations = new RendererConfiguration[rendererCapabilities.length];
    for (int i = 0; i < rendererCapabilities.length; i++) {
        rendererConfigurations[i] = trackSelections[i] != null ? RendererConfiguration.DEFAULT : null;
    }
    // Configure audio and video renderers to use tunneling if appropriate.
    maybeConfigureRenderersForTunneling(rendererCapabilities, rendererTrackGroupArrays, rendererFormatSupports, rendererConfigurations, trackSelections, tunnelingAudioSessionId);
    return new TrackSelectorResult(trackGroups, new TrackSelectionArray(trackSelections), mappedTrackInfo, rendererConfigurations);
}