commit ed5554fb1c837f6b1008d3910018c979c57da502
author Ronghua Wu <ronghuawu@google.com> Mon Apr 06 14:17:24 2015 -0700
committer Ronghua Wu <ronghuawu@google.com> Fri Apr 10 14:49:44 2015 -0700
tree 65ebd5ffd8e905b4756f01a508974464e2b4e5f0
parent 52e88b2986536e83a7a6da63461556b8734a85f3

libstagefright: handle MediaFormat "operating-rate" key.

Bug: 19620911
Change-Id: I846d3cc10308a13f2ed92bb82ba7e8236d9c67d1

include/media/stagefright/ACodec.h

diff --git a/include/media/stagefright/ACodec.h b/include/media/stagefright/ACodec.h
index c1483f3..a8d0fcb 100644
--- a/include/media/stagefright/ACodec.h
+++ b/include/media/stagefright/ACodec.h
@@ -300,6 +300,7 @@
             OMX_U32 portIndex, int32_t sampleRate, int32_t numChannels);
 
     status_t setPriority(int32_t priority);
+    status_t setOperatingRate(float rateFloat, bool isVideo);
 
     status_t setMinBufferSize(OMX_U32 portIndex, size_t size);
 

media/libstagefright/ACodec.cpp

diff --git a/media/libstagefright/ACodec.cpp b/media/libstagefright/ACodec.cpp
index 4efc630..45f6339 100644
--- a/media/libstagefright/ACodec.cpp
+++ b/media/libstagefright/ACodec.cpp
@@ -1685,6 +1685,16 @@
         err = setPriority(priority);
     }
 
+    int32_t rateInt = -1;
+    float rateFloat = -1;
+    if (!msg->findFloat("operating-rate", &rateFloat)) {
+        msg->findInt32("operating-rate", &rateInt);
+        rateFloat = (float)rateInt;  // 16MHz (FLINTMAX) is OK for upper bound.
+    }
+    if (rateFloat > 0) {
+        err = setOperatingRate(rateFloat, video);
+    }
+
     mBaseOutputFormat = outputFormat;
 
     CHECK_EQ(getPortFormat(kPortIndexInput, inputFormat), (status_t)OK);
@@ -1711,6 +1721,34 @@
     return OK;
 }
 
+status_t ACodec::setOperatingRate(float rateFloat, bool isVideo) {
+    if (rateFloat < 0) {
+        return BAD_VALUE;
+    }
+    OMX_U32 rate;
+    if (isVideo) {
+        if (rateFloat > 65535) {
+            return BAD_VALUE;
+        }
+        rate = (OMX_U32)(rateFloat * 65536.0f + 0.5f);
+    } else {
+        if (rateFloat > UINT_MAX) {
+            return BAD_VALUE;
+        }
+        rate = (OMX_U32)(rateFloat);
+    }
+    OMX_PARAM_U32TYPE config;
+    InitOMXParams(&config);
+    config.nU32 = rate;
+    status_t err = mOMX->setConfig(
+            mNode, (OMX_INDEXTYPE)OMX_IndexConfigOperatingRate,
+            &config, sizeof(config));
+    if (err != OK) {
+        ALOGI("codec does not support config operating rate (err %d)", err);
+    }
+    return OK;
+}
+
 status_t ACodec::setMinBufferSize(OMX_U32 portIndex, size_t size) {
     OMX_PARAM_PORTDEFINITIONTYPE def;
     InitOMXParams(&def);