Contributors: 2
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Jonas Karlman |
380 |
97.69% |
1 |
50.00% |
| Philipp Zabel |
9 |
2.31% |
1 |
50.00% |
| Total |
389 |
|
2 |
|
// 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_quantization *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);
}