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