Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 429 insertions, 0 deletions

diff --git a/drivers/media/platform/chips-media/coda-h264.c b/drivers/media/platform/chips-media/coda-h264.c
new file mode 100644
index 0000000000..8bd0aa8af1
--- /dev/null
+++ b/drivers/media/platform/chips-media/coda-h264.c
@@ -0,0 +1,429 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Coda multi-standard codec IP - H.264 helper functions
+ *
+ * Copyright (C) 2012 Vista Silicon S.L.
+ *    Javier Martin, <javier.martin@vista-silicon.com>
+ *    Xavier Duret
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/videodev2.h>
+
+#include "coda.h"
+
+static const u8 coda_filler_size[8] = { 0, 7, 14, 13, 12, 11, 10, 9 };
+
+static const u8 *coda_find_nal_header(const u8 *buf, const u8 *end)
+{
+	u32 val = 0xffffffff;
+
+	do {
+		val = val << 8 | *buf++;
+		if (buf >= end)
+			return NULL;
+	} while (val != 0x00000001);
+
+	return buf;
+}
+
+int coda_sps_parse_profile(struct coda_ctx *ctx, struct vb2_buffer *vb)
+{
+	const u8 *buf = vb2_plane_vaddr(vb, 0);
+	const u8 *end = buf + vb2_get_plane_payload(vb, 0);
+
+	/* Find SPS header */
+	do {
+		buf = coda_find_nal_header(buf, end);
+		if (!buf)
+			return -EINVAL;
+	} while ((*buf++ & 0x1f) != 0x7);
+
+	ctx->params.h264_profile_idc = buf[0];
+	ctx->params.h264_level_idc = buf[2];
+
+	return 0;
+}
+
+int coda_h264_filler_nal(int size, char *p)
+{
+	if (size < 6)
+		return -EINVAL;
+
+	p[0] = 0x00;
+	p[1] = 0x00;
+	p[2] = 0x00;
+	p[3] = 0x01;
+	p[4] = 0x0c;
+	memset(p + 5, 0xff, size - 6);
+	/* Add rbsp stop bit and trailing at the end */
+	p[size - 1] = 0x80;
+
+	return 0;
+}
+
+int coda_h264_padding(int size, char *p)
+{
+	int nal_size;
+	int diff;
+
+	diff = size - (size & ~0x7);
+	if (diff == 0)
+		return 0;
+
+	nal_size = coda_filler_size[diff];
+	coda_h264_filler_nal(nal_size, p);
+
+	return nal_size;
+}
+
+int coda_h264_profile(int profile_idc)
+{
+	switch (profile_idc) {
+	case 66: return V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE;
+	case 77: return V4L2_MPEG_VIDEO_H264_PROFILE_MAIN;
+	case 88: return V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED;
+	case 100: return V4L2_MPEG_VIDEO_H264_PROFILE_HIGH;
+	default: return -EINVAL;
+	}
+}
+
+int coda_h264_level(int level_idc)
+{
+	switch (level_idc) {
+	case 10: return V4L2_MPEG_VIDEO_H264_LEVEL_1_0;
+	case 9:  return V4L2_MPEG_VIDEO_H264_LEVEL_1B;
+	case 11: return V4L2_MPEG_VIDEO_H264_LEVEL_1_1;
+	case 12: return V4L2_MPEG_VIDEO_H264_LEVEL_1_2;
+	case 13: return V4L2_MPEG_VIDEO_H264_LEVEL_1_3;
+	case 20: return V4L2_MPEG_VIDEO_H264_LEVEL_2_0;
+	case 21: return V4L2_MPEG_VIDEO_H264_LEVEL_2_1;
+	case 22: return V4L2_MPEG_VIDEO_H264_LEVEL_2_2;
+	case 30: return V4L2_MPEG_VIDEO_H264_LEVEL_3_0;
+	case 31: return V4L2_MPEG_VIDEO_H264_LEVEL_3_1;
+	case 32: return V4L2_MPEG_VIDEO_H264_LEVEL_3_2;
+	case 40: return V4L2_MPEG_VIDEO_H264_LEVEL_4_0;
+	case 41: return V4L2_MPEG_VIDEO_H264_LEVEL_4_1;
+	case 42: return V4L2_MPEG_VIDEO_H264_LEVEL_4_2;
+	case 50: return V4L2_MPEG_VIDEO_H264_LEVEL_5_0;
+	case 51: return V4L2_MPEG_VIDEO_H264_LEVEL_5_1;
+	default: return -EINVAL;
+	}
+}
+
+struct rbsp {
+	char *buf;
+	int size;
+	int pos;
+};
+
+static inline int rbsp_read_bit(struct rbsp *rbsp)
+{
+	int shift = 7 - (rbsp->pos % 8);
+	int ofs = rbsp->pos++ / 8;
+
+	if (ofs >= rbsp->size)
+		return -EINVAL;
+
+	return (rbsp->buf[ofs] >> shift) & 1;
+}
+
+static inline int rbsp_write_bit(struct rbsp *rbsp, int bit)
+{
+	int shift = 7 - (rbsp->pos % 8);
+	int ofs = rbsp->pos++ / 8;
+
+	if (ofs >= rbsp->size)
+		return -EINVAL;
+
+	rbsp->buf[ofs] &= ~(1 << shift);
+	rbsp->buf[ofs] |= bit << shift;
+
+	return 0;
+}
+
+static inline int rbsp_read_bits(struct rbsp *rbsp, int num, int *val)
+{
+	int i, ret;
+	int tmp = 0;
+
+	if (num > 32)
+		return -EINVAL;
+
+	for (i = 0; i < num; i++) {
+		ret = rbsp_read_bit(rbsp);
+		if (ret < 0)
+			return ret;
+		tmp |= ret << (num - i - 1);
+	}
+
+	if (val)
+		*val = tmp;
+
+	return 0;
+}
+
+static int rbsp_write_bits(struct rbsp *rbsp, int num, int value)
+{
+	int ret;
+
+	while (num--) {
+		ret = rbsp_write_bit(rbsp, (value >> num) & 1);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int rbsp_read_uev(struct rbsp *rbsp, unsigned int *val)
+{
+	int leading_zero_bits = 0;
+	unsigned int tmp = 0;
+	int ret;
+
+	while ((ret = rbsp_read_bit(rbsp)) == 0)
+		leading_zero_bits++;
+	if (ret < 0)
+		return ret;
+
+	if (leading_zero_bits > 0) {
+		ret = rbsp_read_bits(rbsp, leading_zero_bits, &tmp);
+		if (ret)
+			return ret;
+	}
+
+	if (val)
+		*val = (1 << leading_zero_bits) - 1 + tmp;
+
+	return 0;
+}
+
+static int rbsp_write_uev(struct rbsp *rbsp, unsigned int value)
+{
+	int i;
+	int ret;
+	int tmp = value + 1;
+	int leading_zero_bits = fls(tmp) - 1;
+
+	for (i = 0; i < leading_zero_bits; i++) {
+		ret = rbsp_write_bit(rbsp, 0);
+		if (ret)
+			return ret;
+	}
+
+	return rbsp_write_bits(rbsp, leading_zero_bits + 1, tmp);
+}
+
+static int rbsp_read_sev(struct rbsp *rbsp, int *val)
+{
+	unsigned int tmp;
+	int ret;
+
+	ret = rbsp_read_uev(rbsp, &tmp);
+	if (ret)
+		return ret;
+
+	if (val) {
+		if (tmp & 1)
+			*val = (tmp + 1) / 2;
+		else
+			*val = -(tmp / 2);
+	}
+
+	return 0;
+}
+
+/**
+ * coda_h264_sps_fixup - fixes frame cropping values in h.264 SPS
+ * @ctx: encoder context
+ * @width: visible width
+ * @height: visible height
+ * @buf: buffer containing h.264 SPS RBSP, starting with NAL header
+ * @size: modified RBSP size return value
+ * @max_size: available size in buf
+ *
+ * Rewrites the frame cropping values in an h.264 SPS RBSP correctly for the
+ * given visible width and height.
+ */
+int coda_h264_sps_fixup(struct coda_ctx *ctx, int width, int height, char *buf,
+			int *size, int max_size)
+{
+	int profile_idc;
+	unsigned int pic_order_cnt_type;
+	int pic_width_in_mbs_minus1, pic_height_in_map_units_minus1;
+	int frame_mbs_only_flag, frame_cropping_flag;
+	int vui_parameters_present_flag;
+	unsigned int crop_right, crop_bottom;
+	struct rbsp sps;
+	int pos;
+	int ret;
+
+	if (*size < 8 || *size >= max_size)
+		return -EINVAL;
+
+	sps.buf = buf + 5; /* Skip NAL header */
+	sps.size = *size - 5;
+
+	profile_idc = sps.buf[0];
+	/* Skip constraint_set[0-5]_flag, reserved_zero_2bits */
+	/* Skip level_idc */
+	sps.pos = 24;
+
+	/* seq_parameter_set_id */
+	ret = rbsp_read_uev(&sps, NULL);
+	if (ret)
+		return ret;
+
+	if (profile_idc == 100 || profile_idc == 110 || profile_idc == 122 ||
+	    profile_idc == 244 || profile_idc == 44 || profile_idc == 83 ||
+	    profile_idc == 86 || profile_idc == 118 || profile_idc == 128 ||
+	    profile_idc == 138 || profile_idc == 139 || profile_idc == 134 ||
+	    profile_idc == 135) {
+		dev_err(ctx->fh.vdev->dev_parent,
+			"%s: Handling profile_idc %d not implemented\n",
+			__func__, profile_idc);
+		return -EINVAL;
+	}
+
+	/* log2_max_frame_num_minus4 */
+	ret = rbsp_read_uev(&sps, NULL);
+	if (ret)
+		return ret;
+
+	ret = rbsp_read_uev(&sps, &pic_order_cnt_type);
+	if (ret)
+		return ret;
+
+	if (pic_order_cnt_type == 0) {
+		/* log2_max_pic_order_cnt_lsb_minus4 */
+		ret = rbsp_read_uev(&sps, NULL);
+		if (ret)
+			return ret;
+	} else if (pic_order_cnt_type == 1) {
+		unsigned int i, num_ref_frames_in_pic_order_cnt_cycle;
+
+		/* delta_pic_order_always_zero_flag */
+		ret = rbsp_read_bit(&sps);
+		if (ret < 0)
+			return ret;
+		/* offset_for_non_ref_pic */
+		ret = rbsp_read_sev(&sps, NULL);
+		if (ret)
+			return ret;
+		/* offset_for_top_to_bottom_field */
+		ret = rbsp_read_sev(&sps, NULL);
+		if (ret)
+			return ret;
+
+		ret = rbsp_read_uev(&sps,
+				    &num_ref_frames_in_pic_order_cnt_cycle);
+		if (ret)
+			return ret;
+		for (i = 0; i < num_ref_frames_in_pic_order_cnt_cycle; i++) {
+			/* offset_for_ref_frame */
+			ret = rbsp_read_sev(&sps, NULL);
+			if (ret)
+				return ret;
+		}
+	}
+
+	/* max_num_ref_frames */
+	ret = rbsp_read_uev(&sps, NULL);
+	if (ret)
+		return ret;
+
+	/* gaps_in_frame_num_value_allowed_flag */
+	ret = rbsp_read_bit(&sps);
+	if (ret < 0)
+		return ret;
+	ret = rbsp_read_uev(&sps, &pic_width_in_mbs_minus1);
+	if (ret)
+		return ret;
+	ret = rbsp_read_uev(&sps, &pic_height_in_map_units_minus1);
+	if (ret)
+		return ret;
+	frame_mbs_only_flag = ret = rbsp_read_bit(&sps);
+	if (ret < 0)
+		return ret;
+	if (!frame_mbs_only_flag) {
+		/* mb_adaptive_frame_field_flag */
+		ret = rbsp_read_bit(&sps);
+		if (ret < 0)
+			return ret;
+	}
+	/* direct_8x8_inference_flag */
+	ret = rbsp_read_bit(&sps);
+	if (ret < 0)
+		return ret;
+
+	/* Mark position of the frame cropping flag */
+	pos = sps.pos;
+	frame_cropping_flag = ret = rbsp_read_bit(&sps);
+	if (ret < 0)
+		return ret;
+	if (frame_cropping_flag) {
+		unsigned int crop_left, crop_top;
+
+		ret = rbsp_read_uev(&sps, &crop_left);
+		if (ret)
+			return ret;
+		ret = rbsp_read_uev(&sps, &crop_right);
+		if (ret)
+			return ret;
+		ret = rbsp_read_uev(&sps, &crop_top);
+		if (ret)
+			return ret;
+		ret = rbsp_read_uev(&sps, &crop_bottom);
+		if (ret)
+			return ret;
+	}
+	vui_parameters_present_flag = ret = rbsp_read_bit(&sps);
+	if (ret < 0)
+		return ret;
+	if (vui_parameters_present_flag) {
+		dev_err(ctx->fh.vdev->dev_parent,
+			"%s: Handling vui_parameters not implemented\n",
+			__func__);
+		return -EINVAL;
+	}
+
+	crop_right = round_up(width, 16) - width;
+	crop_bottom = round_up(height, 16) - height;
+	crop_right /= 2;
+	if (frame_mbs_only_flag)
+		crop_bottom /= 2;
+	else
+		crop_bottom /= 4;
+
+
+	sps.size = max_size - 5;
+	sps.pos = pos;
+	frame_cropping_flag = 1;
+	ret = rbsp_write_bit(&sps, frame_cropping_flag);
+	if (ret)
+		return ret;
+	ret = rbsp_write_uev(&sps, 0); /* crop_left */
+	if (ret)
+		return ret;
+	ret = rbsp_write_uev(&sps, crop_right);
+	if (ret)
+		return ret;
+	ret = rbsp_write_uev(&sps, 0); /* crop_top */
+	if (ret)
+		return ret;
+	ret = rbsp_write_uev(&sps, crop_bottom);
+	if (ret)
+		return ret;
+	ret = rbsp_write_bit(&sps, 0); /* vui_parameters_present_flag */
+	if (ret)
+		return ret;
+	ret = rbsp_write_bit(&sps, 1);
+	if (ret)
+		return ret;
+
+	*size = 5 + DIV_ROUND_UP(sps.pos, 8);
+
+	return 0;
+}