62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* Hantro VPU codec driver
|
||
|
|
*
|
||
|
|
* Copyright (C) 2018 Rockchip Electronics Co., Ltd.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "hantro.h"
|
||
|
|
|
||
|
|
static const u8 zigzag[64] = {
|
||
|
|
0, 1, 8, 16, 9, 2, 3, 10,
|
||
|
|
17, 24, 32, 25, 18, 11, 4, 5,
|
||
|
|
12, 19, 26, 33, 40, 48, 41, 34,
|
||
|
|
27, 20, 13, 6, 7, 14, 21, 28,
|
||
|
|
35, 42, 49, 56, 57, 50, 43, 36,
|
||
|
|
29, 22, 15, 23, 30, 37, 44, 51,
|
||
|
|
58, 59, 52, 45, 38, 31, 39, 46,
|
||
|
|
53, 60, 61, 54, 47, 55, 62, 63
|
||
|
|
};
|
||
|
|
|
||
|
|
void hantro_mpeg2_dec_copy_qtable(u8 *qtable,
|
||
|
|
const struct v4l2_ctrl_mpeg2_quantisation *ctrl)
|
||
|
|
{
|
||
|
|
int i, n;
|
||
|
|
|
||
|
|
if (!qtable || !ctrl)
|
||
|
|
return;
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(zigzag); i++) {
|
||
|
|
n = zigzag[i];
|
||
|
|
qtable[n + 0] = ctrl->intra_quantiser_matrix[i];
|
||
|
|
qtable[n + 64] = ctrl->non_intra_quantiser_matrix[i];
|
||
|
|
qtable[n + 128] = ctrl->chroma_intra_quantiser_matrix[i];
|
||
|
|
qtable[n + 192] = ctrl->chroma_non_intra_quantiser_matrix[i];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int hantro_mpeg2_dec_init(struct hantro_ctx *ctx)
|
||
|
|
{
|
||
|
|
struct hantro_dev *vpu = ctx->dev;
|
||
|
|
|
||
|
|
ctx->mpeg2_dec.qtable.size = ARRAY_SIZE(zigzag) * 4;
|
||
|
|
ctx->mpeg2_dec.qtable.cpu =
|
||
|
|
dma_alloc_coherent(vpu->dev,
|
||
|
|
ctx->mpeg2_dec.qtable.size,
|
||
|
|
&ctx->mpeg2_dec.qtable.dma,
|
||
|
|
GFP_KERNEL);
|
||
|
|
if (!ctx->mpeg2_dec.qtable.cpu)
|
||
|
|
return -ENOMEM;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void hantro_mpeg2_dec_exit(struct hantro_ctx *ctx)
|
||
|
|
{
|
||
|
|
struct hantro_dev *vpu = ctx->dev;
|
||
|
|
|
||
|
|
dma_free_coherent(vpu->dev,
|
||
|
|
ctx->mpeg2_dec.qtable.size,
|
||
|
|
ctx->mpeg2_dec.qtable.cpu,
|
||
|
|
ctx->mpeg2_dec.qtable.dma);
|
||
|
|
}
|