Reimplement the OMX backend for stagefright.

Besides a major cleanup and refactoring, OMX is now a singleton living in the media server, it listens for death notifications of node observers/clients that allocated OMX nodes and performs/attempts cleanup.

Changed APIs to conform to the rest of the system.
diff --git a/media/libstagefright/OMXCodec.cpp b/media/libstagefright/OMXCodec.cpp
index 5201c5a..83d3b13 100644
--- a/media/libstagefright/OMXCodec.cpp
+++ b/media/libstagefright/OMXCodec.cpp
@@ -88,12 +88,15 @@
 #define CODEC_LOGV(x, ...) LOGV("[%s] "x, mComponentName, ##__VA_ARGS__)
 
 struct OMXCodecObserver : public BnOMXObserver {
-    OMXCodecObserver(const wp<OMXCodec> &target)
-        : mTarget(target) {
+    OMXCodecObserver() {
+    }
+
+    void setCodec(const sp<OMXCodec> &target) {
+        mTarget = target;
     }
 
     // from IOMXObserver
-    virtual void on_message(const omx_message &msg) {
+    virtual void onMessage(const omx_message &msg) {
         sp<OMXCodec> codec = mTarget.promote();
 
         if (codec.get() != NULL) {
@@ -180,6 +183,7 @@
     CHECK(success);
 
     const char *componentName = NULL;
+    sp<OMXCodecObserver> observer = new OMXCodecObserver;
     IOMX::node_id node = 0;
     for (int index = 0;; ++index) {
         if (createEncoder) {
@@ -203,7 +207,7 @@
 
         LOGV("Attempting to allocate OMX node '%s'", componentName);
 
-        status_t err = omx->allocate_node(componentName, &node);
+        status_t err = omx->allocateNode(componentName, observer, &node);
         if (err == OK) {
             LOGV("Successfully allocated OMX node '%s'", componentName);
             break;
@@ -245,6 +249,8 @@
             omx, node, quirks, createEncoder, mime, componentName,
             source);
 
+    observer->setCodec(codec);
+
     uint32_t type;
     const void *data;
     size_t size;
@@ -325,15 +331,15 @@
         LOGV("AVC profile = %d (%s), level = %d",
              (int)profile, AVCProfileToString(profile), (int)level / 10);
 
-#if 0
         if (!strcmp(componentName, "OMX.TI.Video.Decoder")
             && (profile != kAVCProfileBaseline || level > 39)) {
-            // This stream exceeds the decoder's capabilities.
+            // This stream exceeds the decoder's capabilities. The decoder
+            // does not handle this gracefully and would clobber the heap
+            // and wreak havoc instead...
 
             LOGE("Profile and/or level exceed the decoder's capabilities.");
             return NULL;
         }
-#endif
     }
 
     if (!strcasecmp(MEDIA_MIMETYPE_AUDIO_AMR_NB, mime)) {
@@ -404,7 +410,7 @@
     InitOMXParams(&def);
     def.nPortIndex = portIndex;
 
-    status_t err = mOMX->get_parameter(
+    status_t err = mOMX->getParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 
@@ -413,7 +419,7 @@
 
     }
 
-    err = mOMX->set_parameter(
+    err = mOMX->setParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 }
@@ -431,7 +437,7 @@
     OMX_U32 index = 0;
     for (;;) {
         format.nIndex = index;
-        status_t err = mOMX->get_parameter(
+        status_t err = mOMX->getParameter(
                 mNode, OMX_IndexParamVideoPortFormat,
                 &format, sizeof(format));
 
@@ -477,7 +483,7 @@
     }
 
     CODEC_LOGV("found a match.");
-    status_t err = mOMX->set_parameter(
+    status_t err = mOMX->setParameter(
             mNode, OMX_IndexParamVideoPortFormat,
             &format, sizeof(format));
 
@@ -520,7 +526,7 @@
 
     OMX_VIDEO_PORTDEFINITIONTYPE *video_def = &def.format.video;
 
-    status_t err = mOMX->get_parameter(
+    status_t err = mOMX->getParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
 
     CHECK_EQ(err, OK);
@@ -532,7 +538,7 @@
     video_def->eCompressionFormat = compressionFormat;
     video_def->eColorFormat = OMX_COLOR_FormatUnused;
 
-    err = mOMX->set_parameter(
+    err = mOMX->setParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 
@@ -541,7 +547,7 @@
     InitOMXParams(&def);
     def.nPortIndex = kPortIndexInput;
 
-    err = mOMX->get_parameter(
+    err = mOMX->getParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 
@@ -555,7 +561,7 @@
     video_def->eCompressionFormat = OMX_VIDEO_CodingUnused;
     video_def->eColorFormat = colorFormat;
 
-    err = mOMX->set_parameter(
+    err = mOMX->setParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 }
@@ -586,7 +592,7 @@
         format.nPortIndex = kPortIndexOutput;
         format.nIndex = 0;
 
-        status_t err = mOMX->get_parameter(
+        status_t err = mOMX->getParameter(
                 mNode, OMX_IndexParamVideoPortFormat,
                 &format, sizeof(format));
         CHECK_EQ(err, OK);
@@ -599,7 +605,7 @@
                || format.eColorFormat == OMX_COLOR_FormatCbYCrY
                || format.eColorFormat == OMX_QCOM_COLOR_FormatYVU420SemiPlanar);
 
-        err = mOMX->set_parameter(
+        err = mOMX->setParameter(
                 mNode, OMX_IndexParamVideoPortFormat,
                 &format, sizeof(format));
         CHECK_EQ(err, OK);
@@ -612,7 +618,7 @@
 
     OMX_VIDEO_PORTDEFINITIONTYPE *video_def = &def.format.video;
 
-    status_t err = mOMX->get_parameter(
+    status_t err = mOMX->getParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
 
     CHECK_EQ(err, OK);
@@ -632,7 +638,7 @@
 
     video_def->eColorFormat = OMX_COLOR_FormatUnused;
 
-    err = mOMX->set_parameter(
+    err = mOMX->setParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 
@@ -641,7 +647,7 @@
     InitOMXParams(&def);
     def.nPortIndex = kPortIndexOutput;
 
-    err = mOMX->get_parameter(
+    err = mOMX->getParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
     CHECK_EQ(def.eDomain, OMX_PortDomainVideo);
@@ -654,7 +660,7 @@
     video_def->nFrameWidth = width;
     video_def->nFrameHeight = height;
 
-    err = mOMX->set_parameter(
+    err = mOMX->setParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 }
@@ -683,9 +689,6 @@
     mPortStatus[kPortIndexInput] = ENABLED;
     mPortStatus[kPortIndexOutput] = ENABLED;
 
-    mObserver = new OMXCodecObserver(this);
-    mOMX->observe_node(mNode, mObserver);
-
     setComponentRole();
 }
 
@@ -743,7 +746,7 @@
 
         roleParams.cRole[OMX_MAX_STRINGNAME_SIZE - 1] = '\0';
 
-        status_t err = omx->set_parameter(
+        status_t err = omx->setParameter(
                 node, OMX_IndexParamStandardComponentRole,
                 &roleParams, sizeof(roleParams));
 
@@ -760,10 +763,7 @@
 OMXCodec::~OMXCodec() {
     CHECK(mState == LOADED || mState == ERROR);
 
-    status_t err = mOMX->observe_node(mNode, NULL);
-    CHECK_EQ(err, OK);
-
-    err = mOMX->free_node(mNode);
+    status_t err = mOMX->freeNode(mNode);
     CHECK_EQ(err, OK);
 
     mNode = NULL;
@@ -785,7 +785,7 @@
 
     status_t err;
     if (!(mQuirks & kRequiresLoadedToIdleAfterAllocation)) {
-        err = mOMX->send_command(mNode, OMX_CommandStateSet, OMX_StateIdle);
+        err = mOMX->sendCommand(mNode, OMX_CommandStateSet, OMX_StateIdle);
         CHECK_EQ(err, OK);
         setState(LOADED_TO_IDLE);
     }
@@ -794,7 +794,7 @@
     CHECK_EQ(err, OK);
 
     if (mQuirks & kRequiresLoadedToIdleAfterAllocation) {
-        err = mOMX->send_command(mNode, OMX_CommandStateSet, OMX_StateIdle);
+        err = mOMX->sendCommand(mNode, OMX_CommandStateSet, OMX_StateIdle);
         CHECK_EQ(err, OK);
 
         setState(LOADED_TO_IDLE);
@@ -831,7 +831,7 @@
     InitOMXParams(&def);
     def.nPortIndex = portIndex;
 
-    status_t err = mOMX->get_parameter(
+    status_t err = mOMX->getParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
 
     if (err != OK) {
@@ -848,14 +848,14 @@
         IOMX::buffer_id buffer;
         if (portIndex == kPortIndexInput
                 && (mQuirks & kRequiresAllocateBufferOnInputPorts)) {
-            err = mOMX->allocate_buffer_with_backup(
+            err = mOMX->allocateBufferWithBackup(
                     mNode, portIndex, mem, &buffer);
         } else if (portIndex == kPortIndexOutput
                 && (mQuirks & kRequiresAllocateBufferOnOutputPorts)) {
-            err = mOMX->allocate_buffer_with_backup(
+            err = mOMX->allocateBufferWithBackup(
                     mNode, portIndex, mem, &buffer);
         } else {
-            err = mOMX->use_buffer(mNode, portIndex, mem, &buffer);
+            err = mOMX->useBuffer(mNode, portIndex, mem, &buffer);
         }
 
         if (err != OK) {
@@ -922,7 +922,7 @@
                 CODEC_LOGV("Port is disabled, freeing buffer %p", buffer);
 
                 status_t err =
-                    mOMX->free_buffer(mNode, kPortIndexInput, buffer);
+                    mOMX->freeBuffer(mNode, kPortIndexInput, buffer);
                 CHECK_EQ(err, OK);
 
                 buffers->removeAt(i);
@@ -968,7 +968,7 @@
                 CODEC_LOGV("Port is disabled, freeing buffer %p", buffer);
 
                 status_t err =
-                    mOMX->free_buffer(mNode, kPortIndexOutput, buffer);
+                    mOMX->freeBuffer(mNode, kPortIndexOutput, buffer);
                 CHECK_EQ(err, OK);
 
                 buffers->removeAt(i);
@@ -1137,7 +1137,7 @@
                     mPortStatus[kPortIndexOutput] = SHUTTING_DOWN;
 
                     status_t err =
-                        mOMX->send_command(mNode, OMX_CommandStateSet, OMX_StateIdle);
+                        mOMX->sendCommand(mNode, OMX_CommandStateSet, OMX_StateIdle);
                     CHECK_EQ(err, OK);
                 }
             } else {
@@ -1177,7 +1177,7 @@
         {
             CODEC_LOGV("Now Idle.");
             if (mState == LOADED_TO_IDLE) {
-                status_t err = mOMX->send_command(
+                status_t err = mOMX->sendCommand(
                         mNode, OMX_CommandStateSet, OMX_StateExecuting);
 
                 CHECK_EQ(err, OK);
@@ -1194,7 +1194,7 @@
                     countBuffersWeOwn(mPortBuffers[kPortIndexOutput]),
                     mPortBuffers[kPortIndexOutput].size());
 
-                status_t err = mOMX->send_command(
+                status_t err = mOMX->sendCommand(
                         mNode, OMX_CommandStateSet, OMX_StateLoaded);
 
                 CHECK_EQ(err, OK);
@@ -1277,7 +1277,7 @@
         CODEC_LOGV("freeing buffer %p on port %ld", info->mBuffer, portIndex);
 
         status_t err =
-            mOMX->free_buffer(mNode, portIndex, info->mBuffer);
+            mOMX->freeBuffer(mNode, portIndex, info->mBuffer);
 
         if (err != OK) {
             stickyErr = err;
@@ -1337,7 +1337,7 @@
     }
 
     status_t err =
-        mOMX->send_command(mNode, OMX_CommandFlush, portIndex);
+        mOMX->sendCommand(mNode, OMX_CommandFlush, portIndex);
     CHECK_EQ(err, OK);
 
     return true;
@@ -1350,7 +1350,7 @@
     mPortStatus[portIndex] = DISABLING;
 
     status_t err =
-        mOMX->send_command(mNode, OMX_CommandPortDisable, portIndex);
+        mOMX->sendCommand(mNode, OMX_CommandPortDisable, portIndex);
     CHECK_EQ(err, OK);
 
     freeBuffersOnPort(portIndex, true);
@@ -1363,7 +1363,7 @@
     mPortStatus[portIndex] = ENABLING;
 
     status_t err =
-        mOMX->send_command(mNode, OMX_CommandPortEnable, portIndex);
+        mOMX->sendCommand(mNode, OMX_CommandPortEnable, portIndex);
     CHECK_EQ(err, OK);
 }
 
@@ -1415,7 +1415,7 @@
             memcpy(info->mMem->pointer(), specific->mData, specific->mSize);
         }
 
-        status_t err = mOMX->empty_buffer(
+        status_t err = mOMX->emptyBuffer(
                 mNode, info->mBuffer, 0, size,
                 OMX_BUFFERFLAG_ENDOFFRAME | OMX_BUFFERFLAG_CODECCONFIG,
                 0);
@@ -1461,9 +1461,9 @@
                srcLength);
 
         if (srcBuffer->meta_data()->findInt64(kKeyTime, &timestampUs)) {
-            CODEC_LOGV("Calling empty_buffer on buffer %p (length %d)",
+            CODEC_LOGV("Calling emptyBuffer on buffer %p (length %d)",
                  info->mBuffer, srcLength);
-            CODEC_LOGV("Calling empty_buffer with timestamp %lld us (%.2f secs)",
+            CODEC_LOGV("Calling emptyBuffer with timestamp %lld us (%.2f secs)",
                  timestampUs, timestampUs / 1E6);
         }
     }
@@ -1473,7 +1473,7 @@
         srcBuffer = NULL;
     }
 
-    err = mOMX->empty_buffer(
+    err = mOMX->emptyBuffer(
             mNode, info->mBuffer, 0, srcLength,
             flags, timestampUs);
 
@@ -1495,7 +1495,7 @@
     }
 
     CODEC_LOGV("Calling fill_buffer on buffer %p", info->mBuffer);
-    status_t err = mOMX->fill_buffer(mNode, info->mBuffer);
+    status_t err = mOMX->fillBuffer(mNode, info->mBuffer);
     CHECK_EQ(err, OK);
 
     info->mOwnedByComponent = true;
@@ -1540,7 +1540,7 @@
     InitOMXParams(&pcmParams);
     pcmParams.nPortIndex = portIndex;
 
-    status_t err = mOMX->get_parameter(
+    status_t err = mOMX->getParameter(
             mNode, OMX_IndexParamAudioPcm, &pcmParams, sizeof(pcmParams));
 
     CHECK_EQ(err, OK);
@@ -1561,7 +1561,7 @@
         pcmParams.eChannelMapping[1] = OMX_AUDIO_ChannelRF;
     }
 
-    err = mOMX->set_parameter(
+    err = mOMX->setParameter(
             mNode, OMX_IndexParamAudioPcm, &pcmParams, sizeof(pcmParams));
 
     CHECK_EQ(err, OK);
@@ -1574,14 +1574,14 @@
         def.nPortIndex = kPortIndexInput;
 
         status_t err =
-            mOMX->get_parameter(mNode, OMX_IndexParamAudioAmr, &def, sizeof(def));
+            mOMX->getParameter(mNode, OMX_IndexParamAudioAmr, &def, sizeof(def));
 
         CHECK_EQ(err, OK);
 
         def.eAMRFrameFormat = OMX_AUDIO_AMRFrameFormatFSF;
         def.eAMRBandMode = OMX_AUDIO_AMRBandModeNB0;
 
-        err = mOMX->set_parameter(mNode, OMX_IndexParamAudioAmr, &def, sizeof(def));
+        err = mOMX->setParameter(mNode, OMX_IndexParamAudioAmr, &def, sizeof(def));
         CHECK_EQ(err, OK);
     }
 
@@ -1605,14 +1605,14 @@
         def.nPortIndex = kPortIndexInput;
 
         status_t err =
-            mOMX->get_parameter(mNode, OMX_IndexParamAudioAmr, &def, sizeof(def));
+            mOMX->getParameter(mNode, OMX_IndexParamAudioAmr, &def, sizeof(def));
 
         CHECK_EQ(err, OK);
 
         def.eAMRFrameFormat = OMX_AUDIO_AMRFrameFormatFSF;
         def.eAMRBandMode = OMX_AUDIO_AMRBandModeWB0;
 
-        err = mOMX->set_parameter(mNode, OMX_IndexParamAudioAmr, &def, sizeof(def));
+        err = mOMX->setParameter(mNode, OMX_IndexParamAudioAmr, &def, sizeof(def));
         CHECK_EQ(err, OK);
     }
 
@@ -1637,7 +1637,7 @@
         InitOMXParams(&profile);
         profile.nPortIndex = kPortIndexInput;
 
-        status_t err = mOMX->get_parameter(
+        status_t err = mOMX->getParameter(
                 mNode, OMX_IndexParamAudioAac, &profile, sizeof(profile));
         CHECK_EQ(err, OK);
 
@@ -1645,7 +1645,7 @@
         profile.nSampleRate = sampleRate;
         profile.eAACStreamFormat = OMX_AUDIO_AACStreamFormatMP4ADTS;
 
-        err = mOMX->set_parameter(
+        err = mOMX->setParameter(
                 mNode, OMX_IndexParamAudioAac, &profile, sizeof(profile));
         CHECK_EQ(err, OK);
     }
@@ -1669,7 +1669,7 @@
     InitOMXParams(&def);
     def.nPortIndex = kPortIndexOutput;
 
-    status_t err = mOMX->get_parameter(
+    status_t err = mOMX->getParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 
@@ -1718,7 +1718,7 @@
 
     def.nBufferCountActual = def.nBufferCountMin;
 
-    err = mOMX->set_parameter(
+    err = mOMX->setParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 }
@@ -1729,7 +1729,7 @@
     InitOMXParams(&def);
     def.nPortIndex = kPortIndexInput;
 
-    status_t err = mOMX->get_parameter(
+    status_t err = mOMX->getParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 
@@ -1743,7 +1743,7 @@
     def.nBufferSize = compressedSize;
     def.nBufferCountActual = def.nBufferCountMin;
 
-    err = mOMX->set_parameter(
+    err = mOMX->setParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 }
@@ -1834,7 +1834,7 @@
                 mPortStatus[kPortIndexOutput] = SHUTTING_DOWN;
 
                 status_t err =
-                    mOMX->send_command(mNode, OMX_CommandStateSet, OMX_StateIdle);
+                    mOMX->sendCommand(mNode, OMX_CommandStateSet, OMX_StateIdle);
                 CHECK_EQ(err, OK);
             }
 
@@ -2172,7 +2172,7 @@
     InitOMXParams(&def);
     def.nPortIndex = portIndex;
 
-    status_t err = mOMX->get_parameter(
+    status_t err = mOMX->getParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 
@@ -2238,7 +2238,7 @@
                 InitOMXParams(&params);
                 params.nPortIndex = portIndex;
 
-                err = mOMX->get_parameter(
+                err = mOMX->getParameter(
                         mNode, OMX_IndexParamAudioPcm, &params, sizeof(params));
                 CHECK_EQ(err, OK);
 
@@ -2257,7 +2257,7 @@
                 InitOMXParams(&amr);
                 amr.nPortIndex = portIndex;
 
-                err = mOMX->get_parameter(
+                err = mOMX->getParameter(
                         mNode, OMX_IndexParamAudioAmr, &amr, sizeof(amr));
                 CHECK_EQ(err, OK);
 
@@ -2289,7 +2289,7 @@
     InitOMXParams(&def);
     def.nPortIndex = kPortIndexOutput;
 
-    status_t err = mOMX->get_parameter(
+    status_t err = mOMX->getParameter(
             mNode, OMX_IndexParamPortDefinition, &def, sizeof(def));
     CHECK_EQ(err, OK);
 
@@ -2315,7 +2315,7 @@
                 InitOMXParams(&params);
                 params.nPortIndex = kPortIndexOutput;
 
-                err = mOMX->get_parameter(
+                err = mOMX->getParameter(
                         mNode, OMX_IndexParamAudioPcm, &params, sizeof(params));
                 CHECK_EQ(err, OK);
 
@@ -2347,7 +2347,7 @@
                 InitOMXParams(&amr);
                 amr.nPortIndex = kPortIndexOutput;
 
-                err = mOMX->get_parameter(
+                err = mOMX->getParameter(
                         mNode, OMX_IndexParamAudioAmr, &amr, sizeof(amr));
                 CHECK_EQ(err, OK);
 
@@ -2444,8 +2444,9 @@
             return OK;
         }
 
+        sp<OMXCodecObserver> observer = new OMXCodecObserver;
         IOMX::node_id node;
-        status_t err = omx->allocate_node(componentName, &node);
+        status_t err = omx->allocateNode(componentName, observer, &node);
 
         if (err != OK) {
             continue;
@@ -2463,7 +2464,7 @@
         param.nPortIndex = queryDecoders ? 0 : 1;
 
         for (param.nProfileIndex = 0;; ++param.nProfileIndex) {
-            err = omx->get_parameter(
+            err = omx->getParameter(
                     node, OMX_IndexParamVideoProfileLevelQuerySupported,
                     &param, sizeof(param));
 
@@ -2478,7 +2479,7 @@
             caps->mProfileLevels.push(profileLevel);
         }
 
-        CHECK_EQ(omx->free_node(node), OK);
+        CHECK_EQ(omx->freeNode(node), OK);
     }
 }