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Commit 4ddbc0e3 authored by Phil Burk's avatar Phil Burk
Browse files

AudioFormat: add ENCODING_IEC61937 



Allows applications to wrap compressed audio in a PCM
stream and pass through directly to HDMI output.

Bug: 24541671
Bug: 20891646
Bug: 26373761
Change-Id: I67a25672a3b5066b5747380d013c26e60c14c272
Signed-off-by: default avatarPhil Burk <philburk@google.com>
parent a1c7bc75

api/current.txt

+1 −0
Original line number Diff line number Diff line
@@ -19320,6 +19320,7 @@ package android.media { 
    field public static final int ENCODING_DTS = 7; // 0x7

    field public static final int ENCODING_DTS_HD = 8; // 0x8

    field public static final int ENCODING_E_AC3 = 6; // 0x6

    field public static final int ENCODING_IEC61937 = 13; // 0xd

    field public static final int ENCODING_INVALID = 0; // 0x0

    field public static final int ENCODING_PCM_16BIT = 2; // 0x2

    field public static final int ENCODING_PCM_8BIT = 3; // 0x3

api/system-current.txt

+1 −0
Original line number Diff line number Diff line
@@ -20660,6 +20660,7 @@ package android.media { 
    field public static final int ENCODING_DTS = 7; // 0x7

    field public static final int ENCODING_DTS_HD = 8; // 0x8

    field public static final int ENCODING_E_AC3 = 6; // 0x6

    field public static final int ENCODING_IEC61937 = 13; // 0xd

    field public static final int ENCODING_INVALID = 0; // 0x0

    field public static final int ENCODING_PCM_16BIT = 2; // 0x2

    field public static final int ENCODING_PCM_8BIT = 3; // 0x3

api/test-current.txt

+1 −0
Original line number Diff line number Diff line
@@ -19328,6 +19328,7 @@ package android.media { 
    field public static final int ENCODING_DTS = 7; // 0x7

    field public static final int ENCODING_DTS_HD = 8; // 0x8

    field public static final int ENCODING_E_AC3 = 6; // 0x6

    field public static final int ENCODING_IEC61937 = 13; // 0xd

    field public static final int ENCODING_INVALID = 0; // 0x0

    field public static final int ENCODING_PCM_16BIT = 2; // 0x2

    field public static final int ENCODING_PCM_8BIT = 3; // 0x3

media/java/android/media/AudioFormat.java

+35 −1
Original line number Diff line number Diff line
@@ -251,6 +251,10 @@ public class AudioFormat { 
     * @hide

     * */

    public static final int ENCODING_AAC_HE_V2 = 12;

    /** Audio data format: compressed audio wrapped in PCM for HDMI

     * or S/PDIF passthrough.

     */

    public static final int ENCODING_IEC61937 = 13;



    /** Invalid audio channel configuration */

    /** @deprecated Use {@link #CHANNEL_INVALID} instead.  */
@@ -418,6 +422,7 @@ public class AudioFormat { 
        case ENCODING_PCM_8BIT:

            return 1;

        case ENCODING_PCM_16BIT:

        case ENCODING_IEC61937:

        case ENCODING_DEFAULT:

            return 2;

        case ENCODING_PCM_FLOAT:
@@ -443,6 +448,7 @@ public class AudioFormat { 
        case ENCODING_AAC_LC:

        case ENCODING_AAC_HE_V1:

        case ENCODING_AAC_HE_V2:

        case ENCODING_IEC61937:

            return true;

        default:

            return false;
@@ -460,6 +466,7 @@ public class AudioFormat { 
        case ENCODING_E_AC3:

        case ENCODING_DTS:

        case ENCODING_DTS_HD:

        case ENCODING_IEC61937:

            return true;

        default:

            return false;
@@ -483,6 +490,7 @@ public class AudioFormat { 
        case ENCODING_AAC_LC:

        case ENCODING_AAC_HE_V1:

        case ENCODING_AAC_HE_V2:

        case ENCODING_IEC61937: // wrapped in PCM but compressed

            return false;

        case ENCODING_INVALID:

        default:
@@ -490,6 +498,30 @@ public class AudioFormat { 
        }

    }



    /** @hide */

    public static boolean isEncodingLinearFrames(int audioFormat)

    {

        switch (audioFormat) {

        case ENCODING_PCM_8BIT:

        case ENCODING_PCM_16BIT:

        case ENCODING_PCM_FLOAT:

        case ENCODING_IEC61937: // same size as stereo PCM

        case ENCODING_DEFAULT:

            return true;

        case ENCODING_AC3:

        case ENCODING_E_AC3:

        case ENCODING_DTS:

        case ENCODING_DTS_HD:

        case ENCODING_MP3:

        case ENCODING_AAC_LC:

        case ENCODING_AAC_HE_V1:

        case ENCODING_AAC_HE_V2:

            return false;

        case ENCODING_INVALID:

        default:

            throw new IllegalArgumentException("Bad audio format " + audioFormat);

        }

    }

    /**

     * Returns an array of public encoding values extracted from an array of

     * encoding values.
@@ -715,6 +747,7 @@ public class AudioFormat { 
                case ENCODING_E_AC3:

                case ENCODING_DTS:

                case ENCODING_DTS_HD:

                case ENCODING_IEC61937:

                    mEncoding = encoding;

                    break;

                case ENCODING_INVALID:
@@ -859,7 +892,8 @@ public class AudioFormat { 
        ENCODING_AC3,

        ENCODING_E_AC3,

        ENCODING_DTS,

        ENCODING_DTS_HD

        ENCODING_DTS_HD,

        ENCODING_IEC61937

    })

    @Retention(RetentionPolicy.SOURCE)

    public @interface Encoding {}