Changes chronology ------------------ 1.5b Release August 1995 - added date to default USER_DATA string - made prototypes happier - renamed SPECIFICS_FILE to CDL_FILE - fixed bit_rate param in constrained param setting (was too restrictive) - fixed obscure P-block motion vector bug - added a file name replication: foo.ppm [1-10] will make 10 copies of foo.ppm - generalized fopen calls to specify binary mode (MSDOG) - generalized times calls into elapsed_time to handle different library routines - fixed motion vector bug in bframes; skip block bug - fixed minor bugs in parallel, mpeg, main, iframe, param, .... - accepts extra whitespace at the end of lines in parameter files - "PIXEL FULL" bug in B-frames fixed (caused ghosting) - B-blocks "can I skip" rutine now looks at color too (more ghosting problems) - switched from JPEG4 to JPEG5 (if they crash for you, do a -DJPEG4 for the encoder, and get jpeg4.tar.gz off our site) - combine server (parallel) waits longer for files to exist ( thanks to apian@ise.fhg.de) - killing the parallel server kills the clients!!!! (apian@ise.fhg.de) 1.5 Release 8 May 1995 Changes since version 1.3 release (to 1.5) = BUG FIXES - removed SetBlocksPerSlice() from GOPStoMPEG - don't access bb after freeing - non-integer frame rates now work for all machines - fixed parsing of -mv_histogram - fixed numPadding bug (file name problem) - fixed full pixel assertion bug - corrected ASPECT_RATIO bug (was forced to 1) - buffer size is now set correctly - complains when file is too small - fixed bug with non-ranged INPUT_FILE names - forced MB at start/end of slice in P-frame bug fixed - Actually evaluates the constrained parameter settings - fixed a Cr/Cb mixup in bframe.c = NEW FEATURES - rate control - optional B search range different from P range - can read images from stdin, allowing encoding on-the-fly - Does Y files (no U or V) - New way of specifying files `cmd`, like `ls jan-*-94` - Can encode Abekas and Phillips style YUV formats - gamma correction - added -realquiet mode - JMOVIE and JPEGv4 input format fully supported - -float_dct uses the (slower) double precision floating point DCT - automatically identifies itself in (sequence header) userdata - enforced [0][0] entry of Intra Q-table to be 8 - added Jim Boucher's resize code - added -mse flag to print mean squared error on a per-block basis - can specify Sequence header user data - prints version number - finds more skip blocks in GenBFrame - can generate multiple sequence headers (every N GOPs) = SPEED IMPROVEMENTS = MAINTENANCE - removed mpeg_jrevdct_sparse(), since it wasn't used - added CompileTests(); - uses libpnmrw rather than entire pbmplus directory - redid RCS - reorganized [ipb]frame.c to make playing with rate controls easier = PORTABILITY - added #ifdef's, #ifndef's LINUX'es to ease porting Changes from 1.2 to 1.3 ----------------------- = BUG FIXES + deletes frame files when done with them in parallel version + fixed bug in ComputeFrameTable + completion time estimation now is closer to actual time + modified ComputeSNR to avoid overflow of varOrig + fixed bug that caused I/P/B times on HP's to be wrong + fixed bug that made TwoLevel search out of the search window + fixed bug in -quiet 0 + fixed memory leak when using PNM files + fixed bug: crashed when CPU time was 0 (very rare) + fixed bug in -gop option + fixed bug in AppendFiles() = NEW FEATURES + added FORCE_ENCODE_LAST_FRAME option (allows encoding of all frames) + added PARALLEL_CHUNK_TAPER option + added -bit_rate_info option to show bit rate per frame + added -mv_histogram option to show motion vector histogram + custom quantization tables allowed + can specify frame rate, aspect ratio = SPEED IMPROVEMENTS + replaced most remaining binary multiplies/divides with shifts (except those concerning negative numbers) = MAINTENANCE + got rid of & before array warning in block.c + got rid of references to srandom, random in pbmplus.h + undefine 'index' if defined as 'strchr' (since we use index as variable name) + modified frame type code to be more flexible = PORTABILITY + replaced all bzero() calls with memset() calls 1.2 Release 20 October 1993 Changes from 1.1 to 1.2 ----------------------- = BUG FIXES + allow comments in PPM files + first and last macroblocks in a slice may not be skipped macroblocks + fixed YUV bug: should be able to handle dimensions which aren't multiples of 16 + fixed the separate I/O conversion for parallel NFS version + no_frame_summary can now be last option = NEW FEATURES + using DECODED frames as reference frames in parallel version now works + implemented multiple I/O Servers + FORCE_I_ALIGN added + reorganized Server structure slightly (only I/O Servers handle individual frame files on disk) + add option to allow exact division of frames per processor (PARALLEL_PERFECT) = SPEED IMPROVEMENTS + don't start Input server if not needed = MAINTENANCE + got rid of niceProcesses line in main.c + changed write() to SafeWrite() in parallel.c + commented stuff out after #endif's + fixed prototype warnings (eliminated non-4-byte args) 1.1 Release August 1993 Changes from 1.0 to 1.1 ----------------------- = BUG FIXES + fixed bug in parallel Server code which didn't htonl() frame numbers correctly (so it didn't work on little-endian machines) + fixed bug -- B-frames were always getting just 1 slice + fixed listen() to use max connections allowed + fixed noparallel.c so it doesn't complain during non-parallel execution = NEW FEATURES + added level-2 p-search (exhaustive full, then half) + now prints signal-to-noise ratio + parallel code complains if absolute path not used for parameter file + changed single I/O server into separate Input and Output Servers (and have Output Server combine frames in parallel) = SPEED IMPROVEMENTS + slight improvement in Mpost_QuantZigBlock (.10 ms/call down to .08 ms on Sparc-10) + improvement in speed of BlockifyFrame (45.8 ms/call down to 21.2 ms) + improvement in ComputeMotionBlock (0.02 ms/call down to 0.01 ms) + improvement in ComputeMotionLumBlock (0.04 ms/call down to 0.02 ms) + improvement in LumAddMotionError (0.06 ms/call down to 0.05 ms) (changed /2 to >>1) = MAINTENANCE + removed most memory.h references (except jrevdct) + added CFLAGS lines in Makefile for SVR4.0 and SGI machines + removed mproto.h + got rid of printing connection times 1.0 Release July 1993