567 lines
17 KiB
C
567 lines
17 KiB
C
/*
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* Copyright (C) STMicroelectronics SA 2015
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* Author: Hugues Fruchet <hugues.fruchet@st.com> for STMicroelectronics.
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* License terms: GNU General Public License (GPL), version 2
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*/
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#ifndef DELTA_H
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#define DELTA_H
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#include <linux/rpmsg.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-mem2mem.h>
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#include "delta-cfg.h"
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/*
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* enum delta_state - state of decoding instance
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*
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*@DELTA_STATE_WF_FORMAT:
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* Wait for compressed format to be set by V4L2 client in order
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* to know what is the relevant decoder to open.
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*
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*@DELTA_STATE_WF_STREAMINFO:
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* Wait for stream information to be available (bitstream
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* header parsing is done).
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*
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*@DELTA_STATE_READY:
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* Decoding instance is ready to decode compressed access unit.
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*
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*@DELTA_STATE_WF_EOS:
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* Decoding instance is waiting for EOS (End Of Stream) completion.
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*
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*@DELTA_STATE_EOS:
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* EOS (End Of Stream) is completed (signaled to user). Decoding instance
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* should then be closed.
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*/
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enum delta_state {
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DELTA_STATE_WF_FORMAT,
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DELTA_STATE_WF_STREAMINFO,
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DELTA_STATE_READY,
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DELTA_STATE_WF_EOS,
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DELTA_STATE_EOS
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};
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/*
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* struct delta_streaminfo - information about stream to decode
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*
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* @flags: validity of fields (crop, pixelaspect, other)
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* @width: width of video stream
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* @height: height ""
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* @streamformat: fourcc compressed format of video (MJPEG, MPEG2, ...)
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* @dpb: number of frames needed to decode a single frame
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* (h264 dpb, up to 16)
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* @crop: cropping window inside decoded frame (1920x1080@0,0
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* inside 1920x1088 frame for ex.)
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* @pixelaspect: pixel aspect ratio of video (4/3, 5/4)
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* @field: interlaced or not
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* @profile: profile string
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* @level: level string
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* @other: other string information from codec
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* @colorspace: colorspace identifier
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* @xfer_func: transfer function identifier
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* @ycbcr_enc: Y'CbCr encoding identifier
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* @quantization: quantization identifier
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*/
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struct delta_streaminfo {
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u32 flags;
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u32 streamformat;
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u32 width;
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u32 height;
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u32 dpb;
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struct v4l2_rect crop;
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struct v4l2_fract pixelaspect;
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enum v4l2_field field;
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u8 profile[32];
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u8 level[32];
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u8 other[32];
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enum v4l2_colorspace colorspace;
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enum v4l2_xfer_func xfer_func;
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enum v4l2_ycbcr_encoding ycbcr_enc;
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enum v4l2_quantization quantization;
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};
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#define DELTA_STREAMINFO_FLAG_CROP 0x0001
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#define DELTA_STREAMINFO_FLAG_PIXELASPECT 0x0002
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#define DELTA_STREAMINFO_FLAG_OTHER 0x0004
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/*
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* struct delta_au - access unit structure.
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*
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* @vbuf: video buffer information for V4L2
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* @list: V4L2 m2m list that the frame belongs to
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* @prepared: if set vaddr/paddr are resolved
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* @vaddr: virtual address (kernel can read/write)
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* @paddr: physical address (for hardware)
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* @flags: access unit type (V4L2_BUF_FLAG_KEYFRAME/PFRAME/BFRAME)
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* @dts: decoding timestamp of this access unit
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*/
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struct delta_au {
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struct vb2_v4l2_buffer vbuf; /* keep first */
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struct list_head list; /* keep second */
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bool prepared;
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u32 size;
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void *vaddr;
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dma_addr_t paddr;
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u32 flags;
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u64 dts;
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};
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/*
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* struct delta_frameinfo - information about decoded frame
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*
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* @flags: validity of fields (crop, pixelaspect)
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* @pixelformat: fourcc code for uncompressed video format
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* @width: width of frame
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* @height: height of frame
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* @aligned_width: width of frame (with encoder or decoder alignment
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* constraint)
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* @aligned_height: height of frame (with encoder or decoder alignment
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* constraint)
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* @size: maximum size in bytes required for data
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* @crop: cropping window inside frame (1920x1080@0,0
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* inside 1920x1088 frame for ex.)
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* @pixelaspect: pixel aspect ratio of video (4/3, 5/4)
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* @field: interlaced mode
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* @colorspace: colorspace identifier
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* @xfer_func: transfer function identifier
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* @ycbcr_enc: Y'CbCr encoding identifier
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* @quantization: quantization identifier
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*/
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struct delta_frameinfo {
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u32 flags;
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u32 pixelformat;
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u32 width;
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u32 height;
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u32 aligned_width;
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u32 aligned_height;
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u32 size;
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struct v4l2_rect crop;
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struct v4l2_fract pixelaspect;
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enum v4l2_field field;
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enum v4l2_colorspace colorspace;
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enum v4l2_xfer_func xfer_func;
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enum v4l2_ycbcr_encoding ycbcr_enc;
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enum v4l2_quantization quantization;
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};
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#define DELTA_FRAMEINFO_FLAG_CROP 0x0001
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#define DELTA_FRAMEINFO_FLAG_PIXELASPECT 0x0002
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/*
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* struct delta_frame - frame structure.
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*
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* @vbuf: video buffer information for V4L2
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* @list: V4L2 m2m list that the frame belongs to
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* @info: frame information (width, height, format, alignment...)
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* @prepared: if set pix/vaddr/paddr are resolved
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* @index: frame index, aligned on V4L2 wow
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* @vaddr: virtual address (kernel can read/write)
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* @paddr: physical address (for hardware)
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* @state: frame state for frame lifecycle tracking
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* (DELTA_FRAME_FREE/DEC/OUT/REC/...)
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* @flags: frame type (V4L2_BUF_FLAG_KEYFRAME/PFRAME/BFRAME)
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* @dts: decoding timestamp of this frame
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* @field: field order for interlaced frame
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*/
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struct delta_frame {
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struct vb2_v4l2_buffer vbuf; /* keep first */
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struct list_head list; /* keep second */
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struct delta_frameinfo info;
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bool prepared;
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u32 index;
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void *vaddr;
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dma_addr_t paddr;
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u32 state;
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u32 flags;
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u64 dts;
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enum v4l2_field field;
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};
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/* frame state for frame lifecycle tracking */
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#define DELTA_FRAME_FREE 0x00 /* is free and can be used for decoding */
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#define DELTA_FRAME_REF 0x01 /* is a reference frame */
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#define DELTA_FRAME_BSY 0x02 /* is owned by decoder and busy */
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#define DELTA_FRAME_DEC 0x04 /* contains decoded content */
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#define DELTA_FRAME_OUT 0x08 /* has been given to user */
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#define DELTA_FRAME_RDY 0x10 /* is ready but still held by decoder */
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#define DELTA_FRAME_M2M 0x20 /* is owned by mem2mem framework */
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/*
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* struct delta_dts - decoding timestamp.
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*
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* @list: list to chain timestamps
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* @val: timestamp in microseconds
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*/
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struct delta_dts {
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struct list_head list;
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u64 val;
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};
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struct delta_buf {
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u32 size;
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void *vaddr;
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dma_addr_t paddr;
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const char *name;
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unsigned long attrs;
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};
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struct delta_ipc_ctx {
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int cb_err;
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u32 copro_hdl;
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struct completion done;
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struct delta_buf ipc_buf_struct;
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struct delta_buf *ipc_buf;
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};
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struct delta_ipc_param {
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u32 size;
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void *data;
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};
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struct delta_ctx;
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/*
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* struct delta_dec - decoder structure.
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*
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* @name: name of this decoder
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* @streamformat: input stream format that this decoder support
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* @pixelformat: pixel format of decoded frame that this decoder support
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* @max_width: (optional) maximum width that can decode this decoder
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* if not set, maximum width is DELTA_MAX_WIDTH
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* @max_height: (optional) maximum height that can decode this decoder
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* if not set, maximum height is DELTA_MAX_HEIGHT
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* @pm: (optional) if set, decoder will manage power on its own
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* @open: open this decoder
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* @close: close this decoder
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* @setup_frame: setup frame to be used by decoder, see below
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* @get_streaminfo: get stream related infos, see below
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* @get_frameinfo: get decoded frame related infos, see below
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* @set_frameinfo: (optional) set decoded frame related infos, see below
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* @setup_frame: setup frame to be used by decoder, see below
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* @decode: decode a single access unit, see below
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* @get_frame: get the next decoded frame available, see below
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* @recycle: recycle the given frame, see below
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* @flush: (optional) flush decoder, see below
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* @drain: (optional) drain decoder, see below
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*/
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struct delta_dec {
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const char *name;
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u32 streamformat;
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u32 pixelformat;
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u32 max_width;
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u32 max_height;
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bool pm;
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/*
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* decoder ops
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*/
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int (*open)(struct delta_ctx *ctx);
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int (*close)(struct delta_ctx *ctx);
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/*
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* setup_frame() - setup frame to be used by decoder
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* @ctx: (in) instance
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* @frame: (in) frame to use
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* @frame.index (in) identifier of frame
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* @frame.vaddr (in) virtual address (kernel can read/write)
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* @frame.paddr (in) physical address (for hardware)
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*
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* Frame is to be allocated by caller, then given
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* to decoder through this call.
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* Several frames must be given to decoder (dpb),
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* each frame is identified using its index.
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*/
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int (*setup_frame)(struct delta_ctx *ctx, struct delta_frame *frame);
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/*
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* get_streaminfo() - get stream related infos
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* @ctx: (in) instance
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* @streaminfo: (out) width, height, dpb,...
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*
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* Precondition: stream header must have been successfully
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* parsed to have this call successful & @streaminfo valid.
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* Header parsing must be done using decode(), giving
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* explicitly header access unit or first access unit of bitstream.
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* If no valid header is found, get_streaminfo will return -ENODATA,
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* in this case the next bistream access unit must be decoded till
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* get_streaminfo becomes successful.
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*/
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int (*get_streaminfo)(struct delta_ctx *ctx,
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struct delta_streaminfo *streaminfo);
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/*
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* get_frameinfo() - get decoded frame related infos
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* @ctx: (in) instance
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* @frameinfo: (out) width, height, alignment, crop, ...
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*
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* Precondition: get_streaminfo() must be successful
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*/
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int (*get_frameinfo)(struct delta_ctx *ctx,
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struct delta_frameinfo *frameinfo);
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/*
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* set_frameinfo() - set decoded frame related infos
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* @ctx: (in) instance
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* @frameinfo: (out) width, height, alignment, crop, ...
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*
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* Optional.
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* Typically used to negotiate with decoder the output
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* frame if decoder can do post-processing.
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*/
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int (*set_frameinfo)(struct delta_ctx *ctx,
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struct delta_frameinfo *frameinfo);
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/*
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* decode() - decode a single access unit
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* @ctx: (in) instance
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* @au: (in/out) access unit
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* @au.size (in) size of au to decode
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* @au.vaddr (in) virtual address (kernel can read/write)
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* @au.paddr (in) physical address (for hardware)
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* @au.flags (out) au type (V4L2_BUF_FLAG_KEYFRAME/
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* PFRAME/BFRAME)
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*
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* Decode the access unit given. Decode is synchronous;
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* access unit memory is no more needed after this call.
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* After this call, none, one or several frames could
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* have been decoded, which can be retrieved using
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* get_frame().
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*/
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int (*decode)(struct delta_ctx *ctx, struct delta_au *au);
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/*
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* get_frame() - get the next decoded frame available
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* @ctx: (in) instance
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* @frame: (out) frame with decoded data:
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* @frame.index (out) identifier of frame
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* @frame.field (out) field order for interlaced frame
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* @frame.state (out) frame state for frame lifecycle tracking
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* @frame.flags (out) frame type (V4L2_BUF_FLAG_KEYFRAME/
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* PFRAME/BFRAME)
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*
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* Get the next available decoded frame.
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* If no frame is available, -ENODATA is returned.
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* If a frame is available, frame structure is filled with
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* relevant data, frame.index identifying this exact frame.
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* When this frame is no more needed by upper layers,
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* recycle() must be called giving this frame identifier.
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*/
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int (*get_frame)(struct delta_ctx *ctx, struct delta_frame **frame);
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/*
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* recycle() - recycle the given frame
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* @ctx: (in) instance
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* @frame: (in) frame to recycle:
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* @frame.index (in) identifier of frame
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*
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* recycle() is to be called by user when the decoded frame
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* is no more needed (composition/display done).
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* This frame will then be reused by decoder to proceed
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* with next frame decoding.
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* If not enough frames have been provided through setup_frame(),
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* or recycle() is not called fast enough, the decoder can run out
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* of available frames to proceed with decoding (starvation).
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* This case is guarded by wq_recycle wait queue which ensures that
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* decoder is called only if at least one frame is available.
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*/
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int (*recycle)(struct delta_ctx *ctx, struct delta_frame *frame);
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/*
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* flush() - flush decoder
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* @ctx: (in) instance
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*
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* Optional.
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* Reset decoder context and discard all internal buffers.
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* This allows implementation of seek, which leads to discontinuity
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* of input bitstream that decoder must know to restart its internal
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* decoding logic.
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*/
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int (*flush)(struct delta_ctx *ctx);
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/*
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* drain() - drain decoder
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* @ctx: (in) instance
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*
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* Optional.
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* Mark decoder pending frames (decoded but not yet output) as ready
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* so that they can be output to client at EOS (End Of Stream).
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* get_frame() is to be called in a loop right after drain() to
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* get all those pending frames.
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*/
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int (*drain)(struct delta_ctx *ctx);
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};
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struct delta_dev;
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/*
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* struct delta_ctx - instance structure.
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*
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* @flags: validity of fields (streaminfo)
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* @fh: V4L2 file handle
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* @dev: device context
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* @dec: selected decoder context for this instance
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* @ipc_ctx: context of IPC communication with firmware
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* @state: instance state
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* @frame_num: frame number
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* @au_num: access unit number
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* @max_au_size: max size of an access unit
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* @streaminfo: stream information (width, height, dpb, interlacing...)
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* @frameinfo: frame information (width, height, format, alignment...)
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* @nb_of_frames: number of frames available for decoding
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* @frames: array of decoding frames to keep track of frame
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* state and manage frame recycling
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* @decoded_frames: nb of decoded frames from opening
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* @output_frames: nb of output frames from opening
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* @dropped_frames: nb of frames dropped (ie access unit not parsed
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* or frame decoded but not output)
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* @stream_errors: nb of stream errors (corrupted, not supported, ...)
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* @decode_errors: nb of decode errors (firmware error)
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* @sys_errors: nb of system errors (memory, ipc, ...)
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* @dts: FIFO of decoding timestamp.
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* output frames are timestamped with incoming access
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* unit timestamps using this fifo.
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* @name: string naming this instance (debug purpose)
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* @run_work: decoding work
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* @lock: lock for decoding work serialization
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* @aborting: true if current job aborted
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* @priv: private decoder context for this instance, allocated
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* by decoder @open time.
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*/
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struct delta_ctx {
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u32 flags;
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struct v4l2_fh fh;
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struct delta_dev *dev;
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const struct delta_dec *dec;
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struct delta_ipc_ctx ipc_ctx;
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enum delta_state state;
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u32 frame_num;
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u32 au_num;
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size_t max_au_size;
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struct delta_streaminfo streaminfo;
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struct delta_frameinfo frameinfo;
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u32 nb_of_frames;
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struct delta_frame *frames[DELTA_MAX_FRAMES];
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u32 decoded_frames;
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u32 output_frames;
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u32 dropped_frames;
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u32 stream_errors;
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u32 decode_errors;
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u32 sys_errors;
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struct list_head dts;
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char name[100];
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struct work_struct run_work;
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struct mutex lock;
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bool aborting;
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void *priv;
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};
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#define DELTA_FLAG_STREAMINFO 0x0001
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#define DELTA_FLAG_FRAMEINFO 0x0002
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#define DELTA_MAX_FORMATS DELTA_MAX_DECODERS
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/*
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* struct delta_dev - device struct, 1 per probe (so single one for
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* all platform life)
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*
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* @v4l2_dev: v4l2 device
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* @vdev: v4l2 video device
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* @pdev: platform device
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* @dev: device
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* @m2m_dev: memory-to-memory V4L2 device
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* @lock: device lock, for crit section & V4L2 ops serialization.
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* @clk_delta: delta main clock
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* @clk_st231: st231 coprocessor main clock
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* @clk_flash_promip: flash promip clock
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* @decoders: list of registered decoders
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* @nb_of_decoders: nb of registered decoders
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* @pixelformats: supported uncompressed video formats
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* @nb_of_pixelformats: number of supported umcompressed video formats
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* @streamformats: supported compressed video formats
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* @nb_of_streamformats:number of supported compressed video formats
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* @instance_id: rolling counter identifying an instance (debug purpose)
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* @work_queue: decoding job work queue
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* @rpmsg_driver: rpmsg IPC driver
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* @rpmsg_device: rpmsg IPC device
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*/
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struct delta_dev {
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struct v4l2_device v4l2_dev;
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struct video_device *vdev;
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struct platform_device *pdev;
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struct device *dev;
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struct v4l2_m2m_dev *m2m_dev;
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struct mutex lock;
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struct clk *clk_delta;
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struct clk *clk_st231;
|
|
struct clk *clk_flash_promip;
|
|
const struct delta_dec *decoders[DELTA_MAX_DECODERS];
|
|
u32 nb_of_decoders;
|
|
u32 pixelformats[DELTA_MAX_FORMATS];
|
|
u32 nb_of_pixelformats;
|
|
u32 streamformats[DELTA_MAX_FORMATS];
|
|
u32 nb_of_streamformats;
|
|
u8 instance_id;
|
|
struct workqueue_struct *work_queue;
|
|
struct rpmsg_driver rpmsg_driver;
|
|
struct rpmsg_device *rpmsg_device;
|
|
};
|
|
|
|
static inline char *frame_type_str(u32 flags)
|
|
{
|
|
if (flags & V4L2_BUF_FLAG_KEYFRAME)
|
|
return "I";
|
|
if (flags & V4L2_BUF_FLAG_PFRAME)
|
|
return "P";
|
|
if (flags & V4L2_BUF_FLAG_BFRAME)
|
|
return "B";
|
|
if (flags & V4L2_BUF_FLAG_LAST)
|
|
return "EOS";
|
|
return "?";
|
|
}
|
|
|
|
static inline char *frame_field_str(enum v4l2_field field)
|
|
{
|
|
if (field == V4L2_FIELD_NONE)
|
|
return "-";
|
|
if (field == V4L2_FIELD_TOP)
|
|
return "T";
|
|
if (field == V4L2_FIELD_BOTTOM)
|
|
return "B";
|
|
if (field == V4L2_FIELD_INTERLACED)
|
|
return "I";
|
|
if (field == V4L2_FIELD_INTERLACED_TB)
|
|
return "TB";
|
|
if (field == V4L2_FIELD_INTERLACED_BT)
|
|
return "BT";
|
|
return "?";
|
|
}
|
|
|
|
static inline char *frame_state_str(u32 state, char *str, unsigned int len)
|
|
{
|
|
snprintf(str, len, "%s %s %s %s %s %s",
|
|
(state & DELTA_FRAME_REF) ? "ref" : " ",
|
|
(state & DELTA_FRAME_BSY) ? "bsy" : " ",
|
|
(state & DELTA_FRAME_DEC) ? "dec" : " ",
|
|
(state & DELTA_FRAME_OUT) ? "out" : " ",
|
|
(state & DELTA_FRAME_M2M) ? "m2m" : " ",
|
|
(state & DELTA_FRAME_RDY) ? "rdy" : " ");
|
|
return str;
|
|
}
|
|
|
|
int delta_get_frameinfo_default(struct delta_ctx *ctx,
|
|
struct delta_frameinfo *frameinfo);
|
|
int delta_recycle_default(struct delta_ctx *pctx,
|
|
struct delta_frame *frame);
|
|
|
|
int delta_get_free_frame(struct delta_ctx *ctx,
|
|
struct delta_frame **pframe);
|
|
|
|
int delta_get_sync(struct delta_ctx *ctx);
|
|
void delta_put_autosuspend(struct delta_ctx *ctx);
|
|
|
|
#endif /* DELTA_H */
|