ijkplayer .os文件，找了好久，不会编辑的朋友下接下载使用

commit 1773581c90538a761f661fa23a3b75dd567c909e Author: JeffMony <jeffmony@163.com> Date: Tue Sep 8 22:12:50 2020 +0800 [New Feature]:Change the video volume when playing the video by adjusting the sound amplitude Signed-off-by: JeffMony <jeffmony@163.com> diff --git a/library/core/src/main/java/com/google/android/exoplayer2/PlaybackParameters.java b/library/core/src/main/java/com/google/android/exoplayer2/PlaybackParameters.java index 7dcd6f80a..7e7f4da28 100644 --- a/library/core/src/main/java/com/google/android/exoplayer2/PlaybackParameters.java +++ b/library/core/src/main/java/com/google/android/exoplayer2/PlaybackParameters.java @@ -31,6 +31,8 @@ public final class PlaybackParameters { /** The factor by which pitch will be shifted. */ public final float pitch; + public final float volume; + private final int scaledUsPerMs; /** @@ -40,7 +42,7 @@ public final class PlaybackParameters { * @param speed The factor by which playback will be sped up. Must be greater than zero. */ public PlaybackParameters(float speed) { - this(speed, /* pitch= */ 1f); + this(speed, /* pitch= */ 1f, 1f); } /** @@ -51,11 +53,13 @@ public final class PlaybackParameters { * zero. Useful values are {@code 1} (to time-stretch audio) and the same value as passed in * as the {@code speed} (to resample audio, which is useful for slow-motion videos). */ - public PlaybackParameters(float speed, float pitch) { + public PlaybackParameters(float speed, float pitch, float volume) { Assertions.checkArgument(speed > 0); Assertions.checkArgument(pitch > 0); + Assertions.checkArgument(volume > 0); this.speed = speed; this.pitch = pitch; + this.volume = volume; scaledUsPerMs = Math.round(speed * 1000f); } @@ -79,7 +83,7 @@ public final class PlaybackParameters { return false; } PlaybackParameters other = (PlaybackParameters) obj; - return this.speed == other.speed && this.pitch == other.pitch; + return this.speed == other.speed && this.pitch == other.pitch && this.volume == other.volume; } @Override @@ -87,11 +91,12 @@ public final class PlaybackParameters { int result = 17; result = 31 * result + Float.floatToRawIntBits(speed); result = 31 * result + Float.floatToRawIntBits(pitch); + result = 31 * result + Float.floatToRawIntBits(volume); return result; } @Override public String toString() { - return Util.formatInvariant("PlaybackParameters(speed=%.2f, pitch=%.2f)", speed, pitch); + return Util.formatInvariant("PlaybackParameters(speed=%.2f, pitch=%.2f, volume=%.2f)", speed, pitch, volume); } } diff --git a/library/core/src/main/java/com/google/android/exoplayer2/SimpleExoPlayer.java b/library/core/src/main/java/com/google/android/exoplayer2/SimpleExoPlayer.java index 787946d6a..a49c3ec6b 100644 --- a/library/core/src/main/java/com/google/android/exoplayer2/SimpleExoPlayer.java +++ b/library/core/src/main/java/com/google/android/exoplayer2/SimpleExoPlayer.java @@ -1042,7 +1042,7 @@ public class SimpleExoPlayer extends BasePlayer PlaybackParameters playbackParameters; if (params != null) { params.allowDefaults(); - playbackParameters = new PlaybackParameters(params.getSpeed(), params.getPitch()); + playbackParameters = new PlaybackParameters(params.getSpeed(), params.getPitch(), 1f); } else { playbackParameters = null; } diff --git a/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java b/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java index 1e04b1e8d..98b5ea477 100644 --- a/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java +++ b/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java @@ -174,7 +174,8 @@ public final class DefaultAudioSink implements AudioSink { public PlaybackParameters applyPlaybackParameters(PlaybackParameters playbackParameters) { float speed = sonicAudioProcessor.setSpeed(playbackParameters.speed); float pitch = sonicAudioProcessor.setPitch(playbackParameters.pitch); - return new PlaybackParameters(speed, pitch); + float volume = sonicAudioProcessor.setVolume(playbackParameters.volume); + return new PlaybackParameters(speed, pitch, volume); } @Override @@ -205,6 +206,10 @@ public final class DefaultAudioSink implements AudioSink { /** The maximum allowed pitch factor. Higher values will be constrained to fall in range. */ public static final float MAX_PITCH = 8f; + public static final float MIN_VOLUME = 0.1f; + + public static final float MAX_VOLUME = 8F; + /** The default skip silence flag. */ private static final boolean DEFAULT_SKIP_SILENCE = false; @@ -1022,7 +1027,8 @@ public final class DefaultAudioSink implements AudioSink { playbackParameters = new PlaybackParameters( Util.constrainValue(playbackParameters.speed, MIN_PLAYBACK_SPEED, MAX_PLAYBACK_SPEED), - Util.constrainValue(playbackParameters.pitch, MIN_PITCH, MAX_PITCH)); + Util.constrainValue(playbackParameters.pitch, MIN_PITCH, MAX_PITCH), + Util.constrainValue(playbackParameters.volume, MIN_VOLUME, MAX_VOLUME)); if (enableAudioTrackPlaybackParams && Util.SDK_INT >= 23) { setAudioTrackPlaybackParametersV23(playbackParameters); } else { @@ -1276,7 +1282,7 @@ public final class DefaultAudioSink implements AudioSink { // Update the speed using the actual effective speed from the audio track. audioTrackPlaybackParameters = new PlaybackParameters( - audioTrack.getPlaybackParams().getSpeed(), audioTrack.getPlaybackParams().getPitch()); + audioTrack.getPlaybackParams().getSpeed(), audioTrack.getPlaybackParams().getPitch(), audioTrackPlaybackParameters.volume); audioTrackPositionTracker.setAudioTrackPlaybackSpeed(audioTrackPlaybackParameters.speed); } this.audioTrackPlaybackParameters = audioTrackPlaybackParameters; diff --git a/library/core/src/main/java/com/google/android/exoplayer2/audio/Sonic.java b/library/core/src/main/java/com/google/android/exoplayer2/audio/Sonic.java index ae65eacd1..aff05f335 100644 --- a/library/core/src/main/java/com/google/android/exoplayer2/audio/Sonic.java +++ b/library/core/src/main/java/com/google/android/exoplayer2/audio/Sonic.java @@ -38,6 +38,7 @@ import java.util.Arrays; private final int channelCount; private final float speed; private final float pitch; + private final float volume; private final float rate; private final int minPeriod; private final int maxPeriod; @@ -65,14 +66,16 @@ import java.util.Arrays; * @param channelCount The number of channels in the input audio. * @param speed The speedup factor for output audio. * @param pitch The pitch factor for output audio. + * @param volume * @param outputSampleRateHz The sample rate for output audio, in hertz. */ public Sonic( - int inputSampleRateHz, int channelCount, float speed, float pitch, int outputSampleRateHz) { + int inputSampleRateHz, int channelCount, float speed, float pitch, float volume, int outputSampleRateHz) { this.inputSampleRateHz = inputSampleRateHz; this.channelCount = channelCount; this.speed = speed; this.pitch = pitch; + this.volume = volume; rate = (float) inputSampleRateHz / outputSampleRateHz; minPeriod = inputSampleRateHz / MAXIMUM_PITCH; maxPeriod = inputSampleRateHz / MINIMUM_PITCH; @@ -481,6 +484,30 @@ import java.util.Arrays; if (r != 1.0f) { adjustRate(r, originalOutputFrameCount); } + if(volume != 1.0f) { + // Adjust output volume. + scaleSamples(outputBuffer, originalOutputFrameCount, outputFrameCount - originalOutputFrameCount, + volume); + } + } + + private void scaleSamples(short sampl