NuPlayer side support for seamless format switch.
Avoid reinstantiating decoder if seamless format switch is supported.
Change-Id: I2c2be08d6da90cc835ec747d04a76db2313dfc7c
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
index 22f699e..2423fd5 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
@@ -67,6 +67,7 @@
// queue.
bool needDedicatedLooper = !strncasecmp(mime.c_str(), "video/", 6);
+ mFormat = format;
mCodec = new ACodec;
if (needDedicatedLooper && mCodecLooper == NULL) {
@@ -147,5 +148,65 @@
}
}
+bool NuPlayer::Decoder::supportsSeamlessAudioFormatChange(const sp<AMessage> &targetFormat) const {
+ if (targetFormat == NULL) {
+ return true;
+ }
+
+ AString mime;
+ if (!targetFormat->findString("mime", &mime)) {
+ return false;
+ }
+
+ if (!strcasecmp(mime.c_str(), MEDIA_MIMETYPE_AUDIO_AAC)) {
+ // field-by-field comparison
+ const char * keys[] = { "channel-count", "sample-rate", "is-adts" };
+ for (unsigned int i = 0; i < sizeof(keys) / sizeof(keys[0]); i++) {
+ int32_t oldVal, newVal;
+ if (!mFormat->findInt32(keys[i], &oldVal) || !targetFormat->findInt32(keys[i], &newVal)
+ || oldVal != newVal) {
+ return false;
+ }
+ }
+
+ sp<ABuffer> oldBuf, newBuf;
+ if (mFormat->findBuffer("csd-0", &oldBuf) && targetFormat->findBuffer("csd-0", &newBuf)) {
+ if (oldBuf->size() != newBuf->size()) {
+ return false;
+ }
+ return !memcmp(oldBuf->data(), newBuf->data(), oldBuf->size());
+ }
+ }
+ return false;
+}
+
+bool NuPlayer::Decoder::supportsSeamlessFormatChange(const sp<AMessage> &targetFormat) const {
+ if (mFormat == NULL) {
+ return false;
+ }
+
+ if (targetFormat == NULL) {
+ return true;
+ }
+
+ AString oldMime, newMime;
+ if (!mFormat->findString("mime", &oldMime)
+ || !targetFormat->findString("mime", &newMime)
+ || !(oldMime == newMime)) {
+ return false;
+ }
+
+ bool audio = !strncasecmp(oldMime.c_str(), "audio/", strlen("audio/"));
+ bool seamless;
+ if (audio) {
+ seamless = supportsSeamlessAudioFormatChange(targetFormat);
+ } else {
+ seamless = mCodec != NULL && mCodec->isConfiguredForAdaptivePlayback();
+ }
+
+ ALOGV("%s seamless support for %s", seamless ? "yes" : "no", oldMime.c_str());
+ return seamless;
+}
+
} // namespace android