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

Author	SHA1	Message	Date
Andreas Rheinhardt	34ff543672	avcodec/mpegvideo_enc: Deduplicate ff_mpv_generic_options-based AVClasses The child_class_next API relied on different AVCodecs to use different AVClasses; yet this API has been replaced by child_class_iterate. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	4 years ago
Andreas Rheinhardt	03008c2811	avcodec/speedhqenc: Hardcode table to save space The SpeedHQ encoder currently reverses the entries of two small tables and stores them in other tables. These other tables have a size of 48 bytes, yet the code for their initialization takes 135 bytes (GCC 9.3, x64, O3 albeit in an av_cold function). So remove the runtime initialization and hardcode the tables. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	b05631f7b9	avcodec/speedhq, speedhqenc: Make codecs init-threadsafe The SpeedHQ decoder uses and initializes a RLTable's VLC, yet it also initializes other parts of the RLTable that it does not use. This has downsides besides being wasteful: Because the SpeedHQ encoder also initializes these additional fields, there is a potential for data races (and therefore undefined behaviour). In fact, removing the superfluous initializations from the decoder automatically makes both the decoder and the encoder init-threadsafe. This commit does so. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	a247ac640d	avcodec: Constify AVCodecs Given that the AVCodec.next pointer has now been removed, most of the AVCodecs are not modified at all any more and can therefore be made const (as this patch does); the only exceptions are the very few codecs for external libraries that have a init_static_data callback. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com> Signed-off-by: James Almer <jamrial@gmail.com>	4 years ago
Andreas Rheinhardt	f741bd0674	avcodec/mpeg12enc, speedhqenc: Avoid redundant copies of tables Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	628d02a611	avcodec/speedhqenc: Call correct function Up until now, the SpeedHQ encoder called a wrong function for init: void ff_init_uni_ac_vlc(const uint8_t huff_size_ac[256], uint8_t *uni_ac_vlc_len); Yet the first argument actually used is of type RLTable; the size of said struct is less than 256 if the size of a pointer is four, leading to an access beyond the end of the RLTable. This commit fixes this by calling the actually intended function: init_uni_ac_vlc() from mpeg12enc.c. It was intended to use this function [1], yet doing so was forgotten when the patch was actually applied. [1]: https://ffmpeg.org/pipermail/ffmpeg-devel/2020-July/266187.html Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Jean-Baptiste Kempf	052a5993ad	avcodec: add SpeedHQ encoder	4 years ago