diff options
Diffstat (limited to 'media/libstagefright/OMXCodec.cpp')
-rw-r--r-- | media/libstagefright/OMXCodec.cpp | 40 |
1 files changed, 31 insertions, 9 deletions
diff --git a/media/libstagefright/OMXCodec.cpp b/media/libstagefright/OMXCodec.cpp index a711e43..450fb3b 100644 --- a/media/libstagefright/OMXCodec.cpp +++ b/media/libstagefright/OMXCodec.cpp @@ -94,6 +94,7 @@ static sp<MediaSource> InstantiateSoftwareEncoder( #define CODEC_LOGI(x, ...) ALOGI("[%s] "x, mComponentName, ##__VA_ARGS__) #define CODEC_LOGV(x, ...) ALOGV("[%s] "x, mComponentName, ##__VA_ARGS__) +#define CODEC_LOGW(x, ...) ALOGW("[%s] "x, mComponentName, ##__VA_ARGS__) #define CODEC_LOGE(x, ...) ALOGE("[%s] "x, mComponentName, ##__VA_ARGS__) struct OMXCodecObserver : public BnOMXObserver { @@ -1779,21 +1780,42 @@ status_t OMXCodec::allocateOutputBuffersFromNativeWindow() { strerror(-err), -err); return err; } - - // XXX: Is this the right logic to use? It's not clear to me what the OMX - // buffer counts refer to - how do they account for the renderer holding on - // to buffers? - if (def.nBufferCountActual < def.nBufferCountMin + minUndequeuedBufs) { - OMX_U32 newBufferCount = def.nBufferCountMin + minUndequeuedBufs; + // FIXME: assume that surface is controlled by app (native window + // returns the number for the case when surface is not controlled by app) + // FIXME2: This means that minUndeqeueudBufs can be 1 larger than reported + // For now, try to allocate 1 more buffer, but don't fail if unsuccessful + + // Use conservative allocation while also trying to reduce starvation + // + // 1. allocate at least nBufferCountMin + minUndequeuedBuffers - that is the + // minimum needed for the consumer to be able to work + // 2. try to allocate two (2) additional buffers to reduce starvation from + // the consumer + // plus an extra buffer to account for incorrect minUndequeuedBufs + CODEC_LOGI("OMX-buffers: min=%u actual=%u undeq=%d+1", + def.nBufferCountMin, def.nBufferCountActual, minUndequeuedBufs); + + for (OMX_U32 extraBuffers = 2 + 1; /* condition inside loop */; extraBuffers--) { + OMX_U32 newBufferCount = + def.nBufferCountMin + minUndequeuedBufs + extraBuffers; def.nBufferCountActual = newBufferCount; err = mOMX->setParameter( mNode, OMX_IndexParamPortDefinition, &def, sizeof(def)); - if (err != OK) { - CODEC_LOGE("setting nBufferCountActual to %lu failed: %d", - newBufferCount, err); + + if (err == OK) { + minUndequeuedBufs += extraBuffers; + break; + } + + CODEC_LOGW("setting nBufferCountActual to %lu failed: %d", + newBufferCount, err); + /* exit condition */ + if (extraBuffers == 0) { return err; } } + CODEC_LOGI("OMX-buffers: min=%u actual=%u undeq=%d+1", + def.nBufferCountMin, def.nBufferCountActual, minUndequeuedBufs); err = native_window_set_buffer_count( mNativeWindow.get(), def.nBufferCountActual); |