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path: root/libavcodec/v4l2_buffers.c
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* avcodec, avformat: Remove unnecessary inclusions of lavc/internal.hAndreas Rheinhardt2022-03-23
| | | | Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
* avcodec/v4l2_buffers: remove unused function argumentAndriy Gelman2020-09-26
| | | | Signed-off-by: Andriy Gelman <andriy.gelman@gmail.com>
* avcodec/v4l2_buffers: don't prevent enqueue capture buffer to driverMing Qian2020-04-29
| | | | | | | | | | | | | | | Enqueue/dequeue of the capture buffers should continue while draining. Reference: linux/Documentation/media/uapi/v4l/dev-decoder.rst "The client must continue to handle both queues independently, similarly to normal decode operation. This includes: ... - queuing and dequeuing CAPTURE buffers, until a buffer marked with the V4L2_BUF_FLAG_LAST flag is dequeued" Signed-off-by: Ming Qian <ming.qian@nxp.com> Signed-off-by: Andriy Gelman <andriy.gelman@gmail.com>
* avcodec/v4l2_buffers: Fix infinite loopAndriy Gelman2019-11-01
| | | | | | | | | | | | This part of the code counts the number of planes returned by the v4l2 device for each queried capture/output buffer. When testing the GPU h264 encoder on Nvidia's Jetson Nano, this caused an infinite loop because avbuf->buf.length included some empty buffers (i.e. where avbuf->buf.m.planes[i].length = 0), meaning that the counter was never incremented and break was never reached. This is fixed in the commit by using a well defined iteration range. Signed-off-by: Aman Gupta <aman@tmm1.net>
* avcodec/v4l2: fix compile with older videodev2.hAman Gupta2019-09-15
| | | | | | Some of these symbols are only defined in newer kernel releases. Signed-off-by: Aman Gupta <aman@tmm1.net>
* avcodec/v4l2_context: set frame SAR using VIDIOC_CROPCAPMaxime Jourdan2019-09-11
| | | | Signed-off-by: Aman Gupta <aman@tmm1.net>
* avcodec/v4l2_buffers: use correct timebase for encoder/decoderAman Gupta2019-09-11
| | | | Signed-off-by: Aman Gupta <aman@tmm1.net>
* avcodec/v4l2_m2m_dec: set pkt_dts on decoded frames to NOPTSAman Gupta2019-09-11
| | | | | | | | | Without this ffmpeg will attempt to copy the dts from the most recently enqueued packet into the most recently dequeued frame, which does not account for the buffering inside v4l2 and is not accurate. Signed-off-by: Aman Gupta <aman@tmm1.net>
* avcodec/v4l2_buffers: read height/width from the proper contextAman Gupta2019-09-11
| | | | | | | | | | | | | Frames are generally dequeued into capture buffers, so using the output properties here was incorrect. It happened to work fine for decoding, since the output/capture buffers have the same dimensions. For the v4l2 scaler, the dimensions can be different between output and capture. Using the buffer's associated context makes this code work correctly regardless of where the frame is coming from. Signed-off-by: Aman Gupta <aman@tmm1.net>
* avcodec/v4l2_buffers: split out v4l2_buf_increase_ref helperLukas Rusak2019-09-10
| | | | Signed-off-by: Aman Gupta <aman@tmm1.net>
* avcodec/v4l2_buffers: split out V4L2Buffer generation into helper methodAman Gupta2019-09-10
| | | | Signed-off-by: Aman Gupta <aman@tmm1.net>
* avcodec/v4l2_buffers: split out AVFrame generation into helper methodAman Gupta2019-09-10
| | | | Signed-off-by: Aman Gupta <aman@tmm1.net>
* avcodec/v4l2_buffers: teach ff_v4l2_buffer_avframe_to_buf about contiguous ↵Aman Gupta2019-09-10
| | | | | | | | planar formats This fixes h264_v4l2m2m encoding on the Raspberry Pi Signed-off-by: Aman Gupta <aman@tmm1.net>
* avcodec/v4l2_buffers: Add handling for NV21 and YUV420PDave Stevenson2019-09-10
| | | | | | | The single planar support was for NV12 only. Add NV21 and YUV420P support. Signed-off-by: Aman Gupta <aman@tmm1.net>
* avcodec/v4l2_buffers: return int64_t in v4l2_get_ptsLukas Rusak2019-09-02
| | | | | | v4l2_pts is type int64_t we should return that instead of uint64_t Signed-off-by: Aman Gupta <aman@tmm1.net>
* avcodec/v4l2_buffers: fix minor typos and whitespaceAman Gupta2019-09-02
| | | | Signed-off-by: Aman Gupta <aman@tmm1.net>
* v4l2_m2m: Fix integer overflow in timestamp handlingMark Thompson2018-01-22
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* avcodec: v4l2_m2m: remove unnecessary timeout.Jorge Ramirez-Ortiz2018-01-21
| | | | | | | | | | | | | | Qualcomm's db410c/db820 Venus driver currently present in mainline kernel has a bug which mishandles the CMD_STOP requests causing the decoder to block while draining [1]. This patch removes the workaround that was used to prevent that situation. Encoding/Decoding tested on db820c. [1] on CMD_STOP, the driver is flushing all buffers and never raising IPIPE which ends up in blocking on poll.
* avcodec: v4l2_m2m: fix races around freeing data on closeMark Thompson2018-01-21
| | | | | | | | Refcount all of the context information. This also fixes a potential segmentation fault when accessing freed memory (buffer returned after the codec has been closed). Tested-by: Jorge Ramirez-Ortiz <jorge.ramirez.ortiz@gmail.com>
* avcodec/v4l2: fix single plane decodingJorge Ramirez-Ortiz2017-10-06
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* libavcodec: v4l2: add support for v4l2 mem2mem codecsJorge Ramirez-Ortiz2017-09-23
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>
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