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Commit Graph

4 Commits (5a6e753bc62f0773f44069a9a8e10e9c13326d6a)

Author	SHA1	Message	Date
Carl Eugen Hoyos	2cc51d5025	lavc/v4l2_context: Change the type of the ioctl cmd to uint32_t. ... Fixes a warning on recent Linux: libavcodec/v4l2_context.c: In function 'ff_v4l2_context_set_status': libavcodec/v4l2_context.c:496:26: warning: comparison is always false due to limited range of data type	7 years ago
Jorge Ramirez-Ortiz	44188993a1	avcodec/v4l2: set sizeimage param for non-raw buffers [fixes #6716] ... Some V4L2 drivers fail to allocate buffers when sizeimage is not set to a max value. This is indeed the case for s5p-mfc [1] Most drivers should be able to calculate this value from the frame dimensions and format - or at least have their own default. However since this work around should not impact those drivers doing the "right thing" this commit just provides such a default. The calculations were extracted from the v4l2 driver used to develop the ffmpeg v4l2_m2m support [2]. See venc.c and vdec.c [1] linux.git/drivers/media/platform/s5p-mfc [2] linux.git/drivers/media/platform/qcom/venus/	7 years ago
Michael Niedermayer	b81b8a76b5	avcodec/v4l2_context: Reduce spelling variations ... Reviewed-by: Lou Logan <lou@lrcd.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	7 years ago
Jorge Ramirez-Ortiz	1ef7752d64	libavcodec: v4l2: add support for v4l2 mem2mem codecs ... This patchset enhances Alexis Ballier's original patch and validates it using Qualcomm's Venus hardware (driver recently landed upstream [1]). This has been tested on Qualcomm's DragonBoard 410c and 820c Configure/make scripts have been validated on Ubuntu 10.04 and 16.04. Tested decoders: - h264 - h263 - mpeg4 - vp8 - vp9 - hevc Tested encoders: - h264 - h263 - mpeg4 Tested transcoding (concurrent encoding/decoding) Some of the changes introduced: - v4l2: code cleanup and abstractions added - v4l2: follow the new encode/decode api. - v4l2: fix display size for NV12 output pool. - v4l2: handle EOS (EPIPE and draining) - v4l2: vp8 and mpeg4 decoding and encoding. - v4l2: hevc and vp9 support. - v4l2: generate EOF on dequeue errors. - v4l2: h264_mp4toannexb filtering. - v4l2: fixed make install and fate issues. - v4l2: codecs enabled/disabled depending on pixfmt defined - v4l2: pass timebase/framerate to the context - v4l2: runtime decoder reconfiguration. - v4l2: add more frame information - v4l2: free hardware resources on last reference being released - v4l2: encoding: disable b-frames for upstreaming (patch required) [1] https://lwn.net/Articles/697956/ System Level view: v42l_m2m_enc/dec --> v4l2_m2m --> v4l2_context --> v4l2_buffers Reviewed-by: Jorge Ramirez <jorge.ramirez-ortiz@linaro.org> Reviewed-by: Alexis Ballier <aballier@gentoo.org> Tested-by: Jorge Ramirez <jorge.ramirez-ortiz@linaro.org> Signed-off-by: wm4 <nfxjfg@googlemail.com>	7 years ago