Chiebot-Mirror/FFmpeg - FFmpeg - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Andreas Rheinhardt	83ff99adc4	avcodec/mpc8: Avoid code duplication when initializing VLCs Up until now, VLCs that were part of an array of VLCs were often not initialized in a loop, but separately. The probable reason for this was that these VLCs differed slightly in the parameters to be used for them (i.e. the number of codes or the number of bits to be used differs), so that one would have to provide these parameters e.g. via arrays. Yet these problems have actually largely been solved by now: The length information is contained in a run-length encoded form that is the same for all VLCs and both the number of codes as well as the number of bits to use for each VLC can be easily derived from them. There is just one problem to be solved: When the underlying tables have a different number of elements, putting them into an array of arrays would be wasteful; using an array of pointers to the arrays would also be wasteful. Therefore this commit combines the tables into bigger tables. (Given that all the length tables have the same layout this applies only to the symbols tables.) Finally, the array containing the offset of the VLC's buffer in the big buffer has also been removed. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	e55ade2c01	avcodec/mpc8: Reduce the size of the length tables to initialize VLCs After permuting both length, code as well as symbol tables so that the codes are ordered from left to right in the tree, it became apparent that the length of the codes decreases from left to right. Therefore one can run-length encode the lengths to save space. This commit implements this. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	906911f599	avcodec/mpc8: Reduce size of tables used to initialize VLCs By switching to ff_init_vlc_from_lengths() one can make a table of codes of type uint8_t superfluous, saving space. Other VLCs (those without dedicated symbols table and with codes of type uint8_t) have been made to use ff_init_vlc_from_lengths(), too, because it reduces codesize (ff_init_vlc_from_lengths() has two parameters less than ff_init_vlc_sparse()) and because it allows to use the offset parameter in future commits. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	a081a6d201	avcodec/mpc8huff: Make some arrays unsigned to prevent overflow mpc8_q4_syms is an array of int8_t that is initialized using values not in the range of an int8_t and that is only accessed via a pointer to uint8_t in ff_init_vlc_sparse. The latter applies to all the other _bits and _syms tables in mpc8huff.h, so make them all unsigned. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	5 years ago
Mans Rullgard	2912e87a6c	Replace FFmpeg with Libav in licence headers Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Stefano Sabatini	987903826b	Globally rename the header inclusion guard names. Consistently apply this rule: the guard name is obtained from the filename by stripping the leading "lib", converting '/' and '.' to '_' and uppercasing the resulting name. Guard names in the root directory have to be prefixed by "FFMPEG_". Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Kostya Shishkov	12877faf7c	Musepack SV8 demuxer and decoder Originally committed as revision 10938 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago