FFmpeg

Commit Graph

Author	SHA1	Message	Date
Andreas Rheinhardt	9f38fac053	avcodec/h261dec: Make VLC smaller The VLC for the macroblock address increment uses nine bits; yet there is no code with this length: All codes are either shorter or longer. So one can make the table smaller without changing the amount of codes that need more than one round of parsing. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	41826f84bb	avcodec/h261dec: Reindentation Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	7afc6d71a0	avcodec/h261dec: Make decoder init-threadsafe Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	ed913fcb59	avcodec/h261dec: Don't initialize unused part of RLTable The H.261 decoder only uses an RLTable's VLC table, yet it also initializes its index_run, max_level and max_run. This commit stops doing so; it will also simplify making this decoder init-threadsafe, as the H.261 decoder and encoder now initialize disjoint parts of their common RLTable. Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	b9071a70fc	avcodec/h261dec: Don't initialize unused VLCs The H.261 decoder uses only the very first VLC of ff_h261_rl_tcoeff, so only initialize this one. Saves 68448B from the .bss segment; in case the decoder is actually used, this amount of memory is saved. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	8af82be946	avcodec/mpegvideo: Merge ff_mpv_decode_defaults into ff_mpv_decode_init These two are always called directly after each other (with the exception of the calls in mpeg_decode_init() where some irrelevant modifications of the avctx (which could just as well be done before ff_mpv_decode_defaults(), because it doesn't have a pointer to the AVCodecContext at all and therefore can't see these modifications at all) are performed in between), so merge ff_mpv_decode_defaults() in ff_mpv_decode_init(). Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	ebbdb928e8	avcodec/h261dec: Don't use too big max_depth in get_vlc2() Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Limin Wang	4b2863ff01	avcodec: add FF_CODEC_CAP_INIT_CLEANUP for all codecs which use ff_mpv_common_init() Signed-off-by: Limin Wang <lance.lmwang@gmail.com>	4 years ago
Michael Niedermayer	f670c13f13	avcodec: Rename ff_mpv_decode_mb() to ff_mpv_reconstruct_mb The new name more accuratly describes what the function does Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	8 years ago
Alexandra Hájková	2d72219554	h261dec: Convert to the new bitstream reader	8 years ago
Vittorio Giovara	41ed7ab45f	cosmetics: Fix spelling mistakes Signed-off-by: Diego Biurrun <diego@biurrun.de>	9 years ago
Vittorio Giovara	def97856de	lavc: AV-prefix all codec capabilities Express bitfields more simply. Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>	9 years ago
Vittorio Giovara	848e86f74d	mpegvideo: Drop flags and flags2 They are just duplicates of AVCodecContext members so use those instead.	10 years ago
Vittorio Giovara	6a85dfc830	lavc: Replace av_dlog and tprintf with internal macros	10 years ago
Michael Niedermayer	61aca123fb	avcodec/h261dec: Fix exported MVs for skipped MBs Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	3bb465245f	h261dec: Fix context initialization sequence ff_mpv_common_init sets s->context_initialized. This fixes decoding of h261 in the cases where the demuxer hasn't already set the frame size. CC: libav-stable@libav.org Signed-off-by: Martin Storsjö <martin@martin.st>	10 years ago
Anton Khirnov	7ea1b3472a	lavc: deprecate the use of AVCodecContext.time_base for decoding When decoding, this field holds the inverse of the framerate that can be written in the headers for some codecs. Using a field called 'time_base' for this is very misleading, as there are no timestamps associated with it. Furthermore, this field is used for a very different purpose during encoding. Add a new field, called 'framerate', to replace the use of time_base for decoding.	10 years ago
Michael Niedermayer	4dee4a4470	avcodec/mpegvideo: Factor ff_mpv_decode_init() out Reviewed-by: Benoit Fouet <benoit.fouet@free.fr> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Reimar Döffinger	e8d0b84e8a	h261dec, ituh263dec: Move condition. Stops compiler from doing incredibly stupid things. With vsynth1-flv inner loop goes from 3501 to 3275 decicycles. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>	10 years ago
Reimar Döffinger	36c0043344	h261dec, ituh263dec: ensure CLOSE_READER is done on error paths, too. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>	10 years ago
Reimar Döffinger	2a00812d82	h261dec, ituh263dec: Avoid unnecessary -1 inside inner loop. 3646 -> 3597 decicycles in inner loop when decoding vsynth1-flv. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>	10 years ago
Reimar Döffinger	c0d32686dd	h261dec: Optimize new RL_VLC based decoding. Together with the switch to RL_VLC this results in about 10% speedup for this inner loop. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>	10 years ago
Reimar Döffinger	da0a670b3c	h261, h263 decoders: convert to RL_VLC. Some additional optimizations in following patch. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>	10 years ago
Diego Biurrun	835f798c7d	mpegvideo: cosmetics: Lowercase ugly uppercase MPV_ function name prefixes	10 years ago
Michael Niedermayer	6c1ee1a114	avcodec/h261dec: Fix context initialization sequence Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
John Stebbins	552bc42df4	h261dec: Fix order of initialization ff_MPV_common_init requires the frame dimensions which get parsed in h261_decode_picture_header.	10 years ago
John Stebbins	998c9f15d1	idct: remove call to ff_idctdsp_init from ff_MPV_common_init One step in untangling the mpegvideo code and fixing some problems in the order that initialization is being done in h263dec and h261dec.	10 years ago
Diego Biurrun	7b9ef8d701	mpeg: Split error resilience bits off into a separate file	11 years ago
Diego Biurrun	e74433a8e6	dsputil: Split clear_block/fill_block off into a separate context	11 years ago
wm4	f6774f905f	mpegvideo: operate with pointers to AVFrames instead of whole structs The most interesting parts are initialization in ff_MPV_common_init() and uninitialization in ff_MPV_common_end(). ff_mpeg_unref_picture and ff_thread_release_buffer have additional NULL checks for Picture.f, because these functions can be called on uninitialized or partially initialized Pictures. NULL pointer checks are added to ff_thread_release_buffer() stub function. Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>	11 years ago
Michael Niedermayer	c05065aac0	avcodec/h261: move b_stride/b_xy under the if() where they are used Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	4090d5baa8	avcodec/h261dec: fix motion vector vissualization Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Vittorio Giovara	e0c16e4e32	mpegvideo: move mpegvideo formats-related defines to mpegutils.h	11 years ago
Anton Khirnov	66499f34b5	mpegvideo: do not set current_picture_ptr in decoders This code was originally added in `5f1948111a` to h263 to set decoded frame pts to some random numbers (removed in `a1c5cc429d`) and then cargo culted to other decoders. The code is left in h263dec for now, since some part of the decoder (apparently OBMC) relies on the specific previous frame to be reused.	11 years ago
Anton Khirnov	3b08631727	h26[13]dec: stop using deprecated avcodec_set_dimensions	11 years ago
Michael Niedermayer	711e981276	avcodec/h261dec: Use skip_1stop_8data_bits() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	719dbe86ea	avcodec/h261dec: make while get_bits loop more robust by checking bits left Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Anton Khirnov	a1c5cc429d	lavc: don't set AVFrame.pts to random numbers in decoders.	11 years ago
Diego Biurrun	b2bed9325d	cosmetics: Group .name and .long_name together in codec/format declarations	11 years ago
Luca Barbato	c59967fa7c	h261: check the mtype index Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	11 years ago
Diego Biurrun	088f38a4f9	avcodec: Drop unnecessary ff_ name prefixes from static functions	12 years ago
Diego Biurrun	20429ba96e	h261: Move encoder/decoder shared table init to common code	12 years ago
Diego Biurrun	8a776ad90e	h261: Move shared data tables from a header to a proper C file	12 years ago
Diego Biurrun	52cd84d4d4	h261: Move mvmap table to the only place it is used	12 years ago
Diego Biurrun	0404ec619d	h261: cosmetics: Move functions to avoid forward declarations	12 years ago
Diego Biurrun	b78f81c803	h261: K&R formatting and prettyprinting cosmetics	12 years ago
Diego Biurrun	ae35d91d44	h261: Move ff_h261_rl_table_store declaration to header file	12 years ago
Michael Niedermayer	53fd4f5594	avcodec: fix motion vector vissualization was broken by the buffer ref stuff Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Anton Khirnov	759001c534	lavc decoders: work with refcounted frames.	12 years ago
Diego Biurrun	c242bbd8b6	Remove unnecessary dsputil.h #includes	12 years ago

1 2 3

147 Commits (5f2804aba71dbf4833a3cc5e7b30e8351cd9037a)