Fix the hip free error in the ctest and samples

[essamROCm]

Motivation

Fix the HIP Free error seen in the ctest and ffmpeg samples

Technical Details

Specifying the host mem type for ffmpeg host cpu decoding

Test Plan

ctest passes, samples were tested

[rrawther]

Please add enum for mem_types for better readability

[essamROCm]

The CI check should pass in this PR, the fix addresses the failure that used to happen in ctest and cause the CI build to exit.

[essamROCm]

Please add enum for mem_types for better readability

I added enum(s) for all mem_types in the latest commit.

[kiritigowda]

@essamROCm failing CI

The following tests FAILED:
	  2 - rocpydecode_test_decodercpu (Timeout)
	 12 - video_decode_python_ffmpeg (Subprocess aborted)
	 13 - all_other_decoder_apis (Timeout)
Errors while running CTest
script returned exit code 8

[kiritigowda]

@essamROCm -- logs

mathCI - https://math-ci.amd.com/blue/organizations/jenkins/mainline%2Fprecheckin%2FrocPyDecode/detail/PR-249/1/pipeline/338

Azure - https://dev.azure.com/ROCm-CI/ROCm-CI/_build/results?buildId=58646&view=logs&j=cc43273c-9c3f-5945-36d7-cd65b1f841bc

[kiritigowda]

12: Test command: /usr/bin/python3.10 "/opt/rocm-7.1.0/lib/pyRocVideoDecode/samples/rocdecode/videodecode_cpu_backend.py" "-i" "/opt/rocm-7.1.0/share/rocdecode/video/AMD_driving_virtual_20-H264.mp4" "-resize" "640" "360"
12: Working Directory: /root/test
12: Environment variables: 
12:  PYTHONPATH=/opt/rocm-7.1.0/lib:$PYTHONPATH
12: Test timeout computed to be: 1500
12: Memory access fault by GPU node-1 (Agent handle: 0x5b5a621abb20) on address 0x72273fd02000. Reason: Page not present or supervisor privilege.
1/1 Test #12: video_decode_python_ffmpeg .......Subprocess aborted***Exception:   4.71 sec

0% tests passed, 1 tests failed out of 1

Total Test time (real) =   4.71 sec

The following tests FAILED:
	 12 - video_decode_python_ffmpeg (Subprocess aborted)

[kiritigowda]

Passing Azure CI -

Test project /home/user/_work/1/rocm/share/rocpydecode/tests
      Start  1: rocpydecode_test_decoders
 1/12 Test  #1: rocpydecode_test_decoders ........   Passed    0.95 sec
      Start  2: rocpydecode_test_decodercpu
 2/12 Test  #2: rocpydecode_test_decodercpu ......   Passed    0.60 sec
      Start  3: rocpydecode_test_demuxer
 3/12 Test  #3: rocpydecode_test_demuxer .........   Passed    0.26 sec
      Start  4: rocpydecode_test_types
 4/12 Test  #4: rocpydecode_test_types ...........   Passed    0.07 sec
      Start  5: video_decode_python_H265
 5/12 Test  #5: video_decode_python_H265 .........   Passed    1.82 sec
      Start  6: video_decode_perf_python_H265
 6/12 Test  #6: video_decode_perf_python_H265 ....   Passed    5.16 sec
      Start  7: video_decode_rgb_python_H265
 7/12 Test  #7: video_decode_rgb_python_H265 .....   Passed    1.82 sec
      Start  8: video_decode_python_H264
 8/12 Test  #8: video_decode_python_H264 .........   Passed    1.71 sec
      Start  9: video_decode_perf_python_H264
 9/12 Test  #9: video_decode_perf_python_H264 ....   Passed    3.62 sec
      Start 10: video_decode_python_AV1
10/12 Test #10: video_decode_python_AV1 ..........   Passed    0.38 sec
      Start 11: video_decode_python_AV9
11/12 Test #11: video_decode_python_AV9 ..........   Passed    1.90 sec
      Start 12: video_decode_python_ffmpeg
12/12 Test #12: video_decode_python_ffmpeg .......   Passed    1.24 sec

100% tests passed, 0 tests failed out of 12

Total Test time (real) =  19.53 sec

[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/rocdecode/roc_pydecode_test.cpp	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #249      +/-   ##
===========================================
+ Coverage    42.85%   43.28%   +0.44%     
===========================================
  Files           12       12              
  Lines         1202     1213      +11     
===========================================
+ Hits           515      525      +10     
- Misses         687      688       +1     

Files with missing lines	Coverage Δ
src/rocdecode/roc_pydecode.cpp	86.76% <100.00%> (+1.05%)	⬆️
src/rocdecode/roc_pyvideodecode.cpp	74.60% <100.00%> (ø)
src/rocdecode/roc_pyvideodecodecpu.cpp	10.11% <100.00%> (ø)
src/rocdecode/roc_pyvideodecodecpu.h	0.00% <ø> (ø)
src/rocdecode/roc_pydecode_test.cpp	0.00% <0.00%> (ø)

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[rrawther]

Added some comments