From 96076964863ee6887f0bed9d0f11f424b48ab9b9 Mon Sep 17 00:00:00 2001
From: Andreas Huber <andih@google.com>
Date: Thu, 1 Nov 2012 15:48:44 -0700
Subject: Make video encoders' bitrate mode (constant, variable, ...)
 configurable

through the desired output format. Configure the video encoder to use
constant bitrate mode for WFD.

Change-Id: Id7bd619598153c13448a9c5acd69d80f8a01f333
related-to-bug: 7459597
---
 media/libstagefright/ACodec.cpp | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

(limited to 'media/libstagefright/ACodec.cpp')

diff --git a/media/libstagefright/ACodec.cpp b/media/libstagefright/ACodec.cpp
index 2b4220f..0ca027b 100644
--- a/media/libstagefright/ACodec.cpp
+++ b/media/libstagefright/ACodec.cpp
@@ -1636,6 +1636,15 @@ static OMX_U32 setPFramesSpacing(int32_t iFramesInterval, int32_t frameRate) {
     return ret;
 }
 
+static OMX_VIDEO_CONTROLRATETYPE getBitrateMode(const sp<AMessage> &msg) {
+    int32_t tmp;
+    if (!msg->findInt32("bitrate-mode", &tmp)) {
+        return OMX_Video_ControlRateVariable;
+    }
+
+    return static_cast<OMX_VIDEO_CONTROLRATETYPE>(tmp);
+}
+
 status_t ACodec::setupMPEG4EncoderParameters(const sp<AMessage> &msg) {
     int32_t bitrate, iFrameInterval;
     if (!msg->findInt32("bitrate", &bitrate)
@@ -1643,6 +1652,8 @@ status_t ACodec::setupMPEG4EncoderParameters(const sp<AMessage> &msg) {
         return INVALID_OPERATION;
     }
 
+    OMX_VIDEO_CONTROLRATETYPE bitrateMode = getBitrateMode(msg);
+
     float frameRate;
     if (!msg->findFloat("frame-rate", &frameRate)) {
         int32_t tmp;
@@ -1706,7 +1717,7 @@ status_t ACodec::setupMPEG4EncoderParameters(const sp<AMessage> &msg) {
         return err;
     }
 
-    err = configureBitrate(bitrate);
+    err = configureBitrate(bitrate, bitrateMode);
 
     if (err != OK) {
         return err;
@@ -1722,6 +1733,8 @@ status_t ACodec::setupH263EncoderParameters(const sp<AMessage> &msg) {
         return INVALID_OPERATION;
     }
 
+    OMX_VIDEO_CONTROLRATETYPE bitrateMode = getBitrateMode(msg);
+
     float frameRate;
     if (!msg->findFloat("frame-rate", &frameRate)) {
         int32_t tmp;
@@ -1780,7 +1793,7 @@ status_t ACodec::setupH263EncoderParameters(const sp<AMessage> &msg) {
         return err;
     }
 
-    err = configureBitrate(bitrate);
+    err = configureBitrate(bitrate, bitrateMode);
 
     if (err != OK) {
         return err;
@@ -1796,6 +1809,8 @@ status_t ACodec::setupAVCEncoderParameters(const sp<AMessage> &msg) {
         return INVALID_OPERATION;
     }
 
+    OMX_VIDEO_CONTROLRATETYPE bitrateMode = getBitrateMode(msg);
+
     float frameRate;
     if (!msg->findFloat("frame-rate", &frameRate)) {
         int32_t tmp;
@@ -1881,7 +1896,7 @@ status_t ACodec::setupAVCEncoderParameters(const sp<AMessage> &msg) {
         return err;
     }
 
-    return configureBitrate(bitrate);
+    return configureBitrate(bitrate, bitrateMode);
 }
 
 status_t ACodec::verifySupportForProfileAndLevel(
@@ -1910,7 +1925,8 @@ status_t ACodec::verifySupportForProfileAndLevel(
     }
 }
 
-status_t ACodec::configureBitrate(int32_t bitrate) {
+status_t ACodec::configureBitrate(
+        int32_t bitrate, OMX_VIDEO_CONTROLRATETYPE bitrateMode) {
     OMX_VIDEO_PARAM_BITRATETYPE bitrateType;
     InitOMXParams(&bitrateType);
     bitrateType.nPortIndex = kPortIndexOutput;
@@ -1923,7 +1939,7 @@ status_t ACodec::configureBitrate(int32_t bitrate) {
         return err;
     }
 
-    bitrateType.eControlRate = OMX_Video_ControlRateVariable;
+    bitrateType.eControlRate = bitrateMode;
     bitrateType.nTargetBitrate = bitrate;
 
     return mOMX->setParameter(
-- 
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