The software AVCDecoder now properly seeks as requested. (b5ae1c87) · Commits · e / os / android_frameworks_base

media/libstagefright/codecs/avc/dec/AVCDecoder.cpp

+35 −2

Original line number	Diff line number	Diff line
		@@ -14,6 +14,10 @@
		* limitations under the License.
		*/

		//#define LOG_NDEBUG 0
		#define LOG_TAG "AVCDecoder"
		#include <utils/Log.h>

		#include "AVCDecoder.h"

		#include "avcdec_api.h"
		@@ -44,7 +48,8 @@ AVCDecoder::AVCDecoder(const sp<MediaSource> &source)
		mHandle(new tagAVCHandle),
		mInputBuffer(NULL),
		mAnchorTimeUs(0),
		mNumSamplesOutput(0) {
		mNumSamplesOutput(0),
		mPendingSeekTimeUs(-1) {
		memset(mHandle, 0, sizeof(tagAVCHandle));
		mHandle->AVCObject = NULL;
		mHandle->userData = this;
		@@ -152,6 +157,7 @@ status_t AVCDecoder::start(MetaData *) {

		mAnchorTimeUs = 0;
		mNumSamplesOutput = 0;
		mPendingSeekTimeUs = -1;
		mStarted = true;

		return OK;
		@@ -195,6 +201,21 @@ status_t AVCDecoder::read(
		MediaBuffer *out, const ReadOptions options) {
		*out = NULL;

		int64_t seekTimeUs;
		if (options && options->getSeekTo(&seekTimeUs)) {
		LOGV("seek requested to %lld us (%.2f secs)", seekTimeUs, seekTimeUs / 1E6);

		CHECK(seekTimeUs >= 0);
		mPendingSeekTimeUs = seekTimeUs;

		if (mInputBuffer) {
		mInputBuffer->release();
		mInputBuffer = NULL;
		}

		PVAVCDecReset(mHandle);
		}

		if (mInputBuffer == NULL) {
		LOGV("fetching new input buffer.");

		@@ -203,7 +224,19 @@ status_t AVCDecoder::read(
		mCodecSpecificData.removeAt(0);
		} else {
		for (;;) {
		status_t err = mSource->read(&mInputBuffer);
		if (mPendingSeekTimeUs >= 0) {
		LOGV("reading data from timestamp %lld (%.2f secs)",
		mPendingSeekTimeUs, mPendingSeekTimeUs / 1E6);
		}

		ReadOptions seekOptions;
		if (mPendingSeekTimeUs >= 0) {
		seekOptions.setSeekTo(mPendingSeekTimeUs);
		mPendingSeekTimeUs = -1;
		}
		status_t err = mSource->read(&mInputBuffer, &seekOptions);
		seekOptions.clearSeekTo();

		if (err != OK) {
		return err;
		}

media/libstagefright/include/AVCDecoder.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -57,6 +57,7 @@ private:

		int64_t mAnchorTimeUs;
		int64_t mNumSamplesOutput;
		int64_t mPendingSeekTimeUs;

		void addCodecSpecificData(const uint8_t *data, size_t size);