Added the bit stream reader feature. (#433)

* * rocDecode/ES parser: Added elementary stream file parser for HEVC and AVC.

* * rocDecode/ES parser: Added elementary stream file parser for AV1. Also cleaned up the bitstream ring buffer code.

* * rocDecode/ES parser: Added the IVF container file parser for AV1. Also fixed a bug in fill ring buffer function.

* * rocDecode/ES file parder: Added supported stream type detection.
 - The stream type detection checks the unique syntax patterns of the stream type and calculate the likeliheed score. Based on the score, the most likely type is determined.
 - The current supported stream types are: AVC/HEVC/AV1 elementary streams, IVF AV1 streams.

* * rocDecode/ES file parser: Fixed an AVC decode regression due to a copy and paste error.

* * rocDecode/ES file parser: Added bit depth parsing for codec support check; Added stronger AV1 detection for IVF AV1 stream type.

* * rocDecode/ES file parser: Removed debugging logs.

* * rocDecode/ES file parser: Added exmaple code to use the built-in file parser.

* * rocDecode/Bitstream reader: Renamed the elementary parser feature to bitstream reader and re-organized the code.
 - Moved the bitstream reader code to rocDecode core lib from utility.
 - Added bitstream reader interface in parallel with rocDecode parser and decoder interfaces.

* * rocDecode/Bitstream reader: Added sample to use bitstream reader, instead of FFMPEG demuxer, to get picture data. Also reverted the original sample app back to using FFMPEG demuxer only.

* * rocDecode/Bitstream reader: Renamed the new sample app.

* * rocDecode/Bitstream reader: FFMPEG dependency reduction.
 - Moved MD5 functions out of RocVideoDecoder utility class. This removed RocVideoDecoder's dependency on FFMPEG.
 - Added the new MD5 utility, which depends on FFMPEG lib. MD5 message digest generation is now performed in the MD5 utility.
 - Modified decode sampples that uses MD5 generation function.
 - Removed FFMPEG dependency from video decoder basic sample.

* * rocDecode/Bitstream reader: Added option to use bitstream reader to video decode sample and conformance test script. Added the missing destroy bitstream reader call in video decode basic sample.

* * rocDecode/Bitstream reader: Minor format change. No functional changes.

* * rocDecode/Bitstream reader: Added handling of unsupported stream file type by the bitstream reader to decode sample apps.

* * rocDecode/Bitstream reader: Fixed build errors of several samples.

* * rocDecode/Bitstream reader: Added changes based on review comments.

* * rocDecode/Bitstream reader: File name changes based on review comments.

* * rocDecode/Bitstream reader: Moved MD5 code into single header file. Added changes based on review comments.

* * rocDecode/Bitstream reader: Removed redundant path.

* * rocDecode/Bitstream reader: Changed rocDecode version to 0.10.0. Added minor changes based on review comments.

---------

Co-authored-by: Kiriti Gowda <kiritigowda@gmail.com>

samples/videoDecodeMem/videodecodemem.cpp

@@ -37,6 +37,7 @@ THE SOFTWARE.
 #endif
 #include "video_demuxer.h"
 #include "roc_video_dec.h"
+#include "md5.h"
 
 class FileStreamProvider : public VideoDemuxer::StreamProvider {
 public:
@@ -210,9 +211,11 @@ int main(int argc, char **argv) {
         OutputSurfaceInfo *surf_info;
         uint32_t width, height;
         double total_dec_time = 0;
+        MD5Generator *md5_generator = nullptr;
 
         if (b_generate_md5) {
-            viddec.InitMd5();
+            md5_generator = new MD5Generator();
+            md5_generator->InitMd5();
         }
 
         do {
@@ -233,7 +236,7 @@ int main(int argc, char **argv) {
             for (int i = 0; i < n_frame_returned; i++) {
                 pframe = viddec.GetFrame(&pts);
                 if (b_generate_md5) {
-                    viddec.UpdateMd5ForFrame(pframe, surf_info);
+                    md5_generator->UpdateMd5ForFrame(pframe, surf_info);
                 }
                 if (dump_output_frames && mem_type != OUT_SURFACE_MEM_NOT_MAPPED) {
                     viddec.SaveFrameToFile(output_file_path, pframe, surf_info);
@@ -258,7 +261,7 @@ int main(int argc, char **argv) {
         }
         if (b_generate_md5) {
             uint8_t *digest;
-            viddec.FinalizeMd5(&digest);
+            md5_generator->FinalizeMd5(&digest);
             std::cout << "MD5 message digest: ";
             for (int i = 0; i < 16; i++) {
                 std::cout << std::setfill('0') << std::setw(2) << std::hex << static_cast<int>(digest[i]);
@@ -289,6 +292,7 @@ int main(int argc, char **argv) {
                 std::cout << ref_md5_string << std::endl;
                 ref_md5_file.close();
             }
+            delete md5_generator;
         }
     } catch (const std::exception &ex) {
       std::cout << ex.what() << std::endl;