jeffqjiangNew
61c8661b9c
* * rocDecode: Initial check in for decode buffer pool. * * rocDecode: All 135 streams pass. * * rocDecode: Fixed a build error in debug mode. * * rocDecode/HEVC: Removed two workaround in HEVC DPB management, after decode buffer pool implementa tion. - WR 1: Conditional bumping (when max_num_reorder_pics > 0) to avoid synchronous job submission in C.5.2.3. - WR 2: Add two more buffers in DPB to avoid buffer over-writing. * * rocDecode/HEVC: Added display delay feature. * * rocDecode/HEVC: Fixed the -z option issue within the context of the new decode buffer pool implementation. * * rocDecode/HEVC: Removed redundent code. * * rocDecode/AVC: Added decode buffer pool implementation for AVC. * * rocDecode: Added a few changes. - Added display delay feature to AVC. - Removed a workaround for AVC: AVC_MAX_DPB_FRAMES was increased to 18. Now it is back to 16. - Removed a workaround for AVC: increased DPB buffer size by 2. Now it is back to normal. - Code format changes for HEVC. * * rocDecode/AVC: Fixed the -z option issue within the context of the new decode buffer pool implementation. * * rocDecode: Merged OutputDecodedPictures() method to upper class RocVideoParser. * * rocDecode: Code cleanup. No functional changes. * * rocDecode: Made decode buffer pool size adaptive. - Removed the hard coded decode buffer pool size set in the decoder. - Exposed the display delay parameter from RocVideoDecoder class to the user. - Now the decoder buffer pool size is determined from the DPB buffer size and display delay parameter. * * rocDecode: Several changes based on code review. - Merged decode and display use status into one parameter. - Removed the surface index from DecodeFrameBuffer, which is now implicitly referred by the array index. - Changed a function name for better clarity. * * rocDecode: Added a comment.
41 linhas
2.1 KiB
Markdown
41 linhas
2.1 KiB
Markdown
# Video decode sample
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The video decode sample illustrates decoding a single packetized video stream using FFMPEG demuxer, video parser, and rocDecoder to get the individual decoded frames in YUV format. This sample can be configured with a device ID and optionally able to dump the output to a file. This sample uses the high-level RocVideoDecoder class which connects both the video parser and Rocdecoder. This process repeats in a loop until all frames have been decoded.
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## Prerequisites:
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* Install [rocDecode](../../README.md#build-and-install-instructions)
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* [FFMPEG](https://ffmpeg.org/about.html)
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* On `Ubuntu`
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```shell
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sudo apt install ffmpeg libavcodec-dev libavformat-dev libavutil-dev
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```
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* On `RHEL`/`SLES` - install ffmpeg development packages manually or use [rocDecode-setup.py](../../rocDecode-setup.py) script
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## Build
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```shell
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mkdir video_decode_sample && cd video_decode_sample
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cmake ../
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make -j
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```
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## Run
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```shell
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./videodecode -i <input video file [required]>
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-o <output path to save decoded YUV frames [optional]>
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-d <GPU device ID - 0:device 0 / 1:device 1/ ... [optional - default:0]>
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-f <Number of decoded frames - specify the number of pictures to be decoded [optional]>
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-z <force_zero_latency - Decoded frames will be flushed out for display immediately [optional]>
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-disp_delay <display delay - specify the number of frames to be delayed for display [optional]>
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-sei <extract SEI messages [optional]>
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-md5 <generate MD5 message digest on the decoded YUV image sequence [optional]>
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-md5_check MD5_File_Path <generate MD5 message digest on the decoded YUV image sequence and compare to the reference MD5 string in a file [optional]>
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-crop <crop rectangle for output (not used when using interopped decoded frame) [optional - default: 0,0,0,0]>
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-m <output_surface_memory_type - decoded surface memory [optional - default: 0][0 : OUT_SURFACE_MEM_DEV_INTERNAL/ 1 : OUT_SURFACE_MEM_DEV_COPIED/ 2 : OUT_SURFACE_MEM_HOST_COPIED/3 : OUT_SURFACE_MEM_NOT_MAPPED]>
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``` |