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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Helper functions for H264 codecs.
*
* Copyright (c) 2019 Collabora, Ltd.
*
* Author: Boris Brezillon <boris.brezillon@collabora.com>
*/
#ifndef _MEDIA_V4L2_H264_H
#define _MEDIA_V4L2_H264_H
#include <media/v4l2-ctrls.h>
/**
* struct v4l2_h264_reflist_builder - Reference list builder object
*
* @refs.pic_order_count: reference picture order count
* @refs.frame_num: reference frame number
* @refs.pic_num: reference picture number
* @refs.longterm: set to true for a long term reference
* @refs: array of references
* @cur_pic_order_count: picture order count of the frame being decoded
* @unordered_reflist: unordered list of references. Will be used to generate
* ordered P/B0/B1 lists
* @num_valid: number of valid references in the refs array
*
* This object stores the context of the P/B0/B1 reference list builder.
* This procedure is described in section '8.2.4 Decoding process for reference
* picture lists construction' of the H264 spec.
*/
struct v4l2_h264_reflist_builder {
struct {
s32 pic_order_count;
int frame_num;
u32 pic_num;
u16 longterm : 1;
} refs[V4L2_H264_NUM_DPB_ENTRIES];
s32 cur_pic_order_count;
u8 unordered_reflist[V4L2_H264_NUM_DPB_ENTRIES];
u8 num_valid;
};
void
v4l2_h264_init_reflist_builder(struct v4l2_h264_reflist_builder *b,
const struct v4l2_ctrl_h264_decode_params *dec_params,
const struct v4l2_ctrl_h264_sps *sps,
const struct v4l2_h264_dpb_entry dpb[V4L2_H264_NUM_DPB_ENTRIES]);
/**
* v4l2_h264_build_b_ref_lists() - Build the B0/B1 reference lists
*
* @builder: reference list builder context
* @b0_reflist: 16-bytes array used to store the B0 reference list. Each entry
* is an index in the DPB
* @b1_reflist: 16-bytes array used to store the B1 reference list. Each entry
* is an index in the DPB
*
* This functions builds the B0/B1 reference lists. This procedure is described
* in section '8.2.4 Decoding process for reference picture lists construction'
* of the H264 spec. This function can be used by H264 decoder drivers that
* need to pass B0/B1 reference lists to the hardware.
*/
void
v4l2_h264_build_b_ref_lists(const struct v4l2_h264_reflist_builder *builder,
u8 *b0_reflist, u8 *b1_reflist);
/**
* v4l2_h264_build_p_ref_list() - Build the P reference list
*
* @builder: reference list builder context
* @reflist: 16-bytes array used to store the P reference list. Each entry
* is an index in the DPB
*
* This functions builds the P reference lists. This procedure is describe in
* section '8.2.4 Decoding process for reference picture lists construction'
* of the H264 spec. This function can be used by H264 decoder drivers that
* need to pass a P reference list to the hardware.
*/
void
v4l2_h264_build_p_ref_list(const struct v4l2_h264_reflist_builder *builder,
u8 *reflist);
#endif /* _MEDIA_V4L2_H264_H */
| Name | Type | Size | Permission | Actions |
|---|---|---|---|---|
| davinci | Folder | 0755 |
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| drv-intf | Folder | 0755 |
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| i2c | Folder | 0755 |
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| tpg | Folder | 0755 |
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| cec-notifier.h | File | 5.03 KB | 0644 |
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| cec-pin.h | File | 2.79 KB | 0644 |
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| cec.h | File | 17.87 KB | 0644 |
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| demux.h | File | 22.69 KB | 0644 |
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| dmxdev.h | File | 5.87 KB | 0644 |
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| dvb-usb-ids.h | File | 19.46 KB | 0644 |
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| dvb_ca_en50221.h | File | 4.35 KB | 0644 |
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| dvb_demux.h | File | 10.77 KB | 0644 |
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| dvb_frontend.h | File | 30.03 KB | 0644 |
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| dvb_net.h | File | 2.25 KB | 0644 |
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| dvb_ringbuffer.h | File | 8.32 KB | 0644 |
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| dvb_vb2.h | File | 7.65 KB | 0644 |
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| dvbdev.h | File | 14.43 KB | 0644 |
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| frame_vector.h | File | 1.42 KB | 0644 |
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| hevc-ctrls.h | File | 9.81 KB | 0644 |
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| imx.h | File | 190 B | 0644 |
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| jpeg.h | File | 500 B | 0644 |
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| media-dev-allocator.h | File | 2.21 KB | 0644 |
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| media-device.h | File | 17.65 KB | 0644 |
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| media-devnode.h | File | 5.29 KB | 0644 |
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| media-entity.h | File | 47.11 KB | 0644 |
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| media-request.h | File | 11.96 KB | 0644 |
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| rc-core.h | File | 12.27 KB | 0644 |
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| rc-map.h | File | 14.41 KB | 0644 |
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| rcar-fcp.h | File | 1.1 KB | 0644 |
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| tuner-types.h | File | 7.54 KB | 0644 |
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| tuner.h | File | 8.4 KB | 0644 |
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| tveeprom.h | File | 3.3 KB | 0644 |
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| v4l2-async.h | File | 11.27 KB | 0644 |
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| v4l2-common.h | File | 19.96 KB | 0644 |
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| v4l2-ctrls.h | File | 54.21 KB | 0644 |
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| v4l2-dev.h | File | 20.11 KB | 0644 |
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| v4l2-device.h | File | 18.61 KB | 0644 |
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| v4l2-dv-timings.h | File | 9.08 KB | 0644 |
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| v4l2-event.h | File | 6.01 KB | 0644 |
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| v4l2-fh.h | File | 4.22 KB | 0644 |
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| v4l2-flash-led-class.h | File | 5.75 KB | 0644 |
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| v4l2-fwnode.h | File | 18.25 KB | 0644 |
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| v4l2-h264.h | File | 2.85 KB | 0644 |
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| v4l2-image-sizes.h | File | 827 B | 0644 |
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| v4l2-ioctl.h | File | 33.52 KB | 0644 |
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| v4l2-jpeg.h | File | 5.08 KB | 0644 |
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| v4l2-mc.h | File | 7.78 KB | 0644 |
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| v4l2-mediabus.h | File | 8.65 KB | 0644 |
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| v4l2-mem2mem.h | File | 29.4 KB | 0644 |
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| v4l2-rect.h | File | 5.71 KB | 0644 |
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| v4l2-subdev.h | File | 73.22 KB | 0644 |
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| videobuf-core.h | File | 6.81 KB | 0644 |
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| videobuf-dma-contig.h | File | 909 B | 0644 |
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| videobuf-dma-sg.h | File | 2.79 KB | 0644 |
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| videobuf-vmalloc.h | File | 1.14 KB | 0644 |
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| videobuf2-core.h | File | 51.92 KB | 0644 |
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| videobuf2-dma-contig.h | File | 883 B | 0644 |
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| videobuf2-dma-sg.h | File | 698 B | 0644 |
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| videobuf2-dvb.h | File | 1.81 KB | 0644 |
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| videobuf2-memops.h | File | 1.09 KB | 0644 |
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| videobuf2-v4l2.h | File | 14.48 KB | 0644 |
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| videobuf2-vmalloc.h | File | 509 B | 0644 |
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| vsp1.h | File | 3.57 KB | 0644 |
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