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

Author	SHA1	Message	Date
Andreas Rheinhardt	93b7f9312d	avcodec/av1dec: Check tiles sizes, fix assert, don't read bytes bitwise Tiles have a size field with a length from one to four bytes. As such it is not possible to read it all at once with a call to get_bits() as this only allows to read up to 25 bits; this is guarded by an av_assert2. Yet this is done by the AV1 decoder in get_tiles_info(). It has been done despite said size fields being byte-aligned. This commit fixes this by using the bytestream2 API instead. Furthermore, it is now explicitly checked whether the data is consistent, i.e. whether the data that is supposed to be there extends beyond the end of the data actually present. Reviewed-by: Wang, Fei W <fei.w.wang@intel.com> Reviewed-by: James Almer <jamrial@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	3e057dd8b1	avcodec/av1dec: Remove redundant second free The AV1 decoder has the FF_CODEC_CAP_INIT_CLEANUP flag set and yet the decoder's close function is called manually on some error paths. This is unnecessary and has been removed in this commit. Reviewed-by: James Almer <jamrial@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	92b578e1d6	avcodec/av1dec: Fix segfault upon allocation error Up until now, the AV1 decoder always checks before calling its wrapper around ff_thread_release_buffer() whether the ThreadFrame was used at all, i.e. it checked whether the first data buffer of the AVFrame contained therein is NULL or not. Yet this presumes that the AVFrame has been successfully allocated, even though this can of course fail; and if it did, one would encounter a segfault. Fix this by removing the checks altogether: ff_thread_release_buffer() can handle both unallocated as well as empty frames (since commit `f6774f905f`). Reviewed-by: James Almer <jamrial@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
James Almer	e46f34e85b	avcodec/av1dec: fix setting pix_fmt Fill the array with the software pix_fmt and move the avctx->hwaccel check back to the proper place. Also remove the avoid probing flag to ensure an external av1 decoder will not set a pix_fmt we don't want during format probing. Signed-off-by: James Almer <jamrial@gmail.com>	4 years ago
James Almer	9c6026bc72	avcodec/av1dec: update reference frame state on show_existing_frame As defined in Section 7.4 Signed-off-by: James Almer <jamrial@gmail.com>	4 years ago
James Almer	b80c66bb6b	avcodec/av1dec: set chroma_sample_location Signed-off-by: James Almer <jamrial@gmail.com>	4 years ago
James Almer	b7a06885f1	avcodec/av1dec: use av_cmp_q() to compare aspect ratio Signed-off-by: James Almer <jamrial@gmail.com>	4 years ago
Fei Wang	47be5a5056	avcodec: add AV1 hardware accelerated decoder This AV1 decoder is currently only used for hardware accelerated decoding. It can be extended into a native decoder in the future, so set its name to "av1" and temporarily give it the lowest priority in the codec list. Signed-off-by: Fei Wang <fei.w.wang@intel.com> Signed-off-by: James Almer <jamrial@gmail.com>	4 years ago

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