[PATCH v9 05/10] media: verisilcon : Use exported tables from v4l2-jpeg for hantro codec

From: Devarsh Thakkar
Date: Sun May 26 2024 - 14:08:44 EST

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Use v4l2-jpeg core API to import reference quantization and huffman tables
used for JPEG Encoding.

Signed-off-by: Devarsh Thakkar <devarsht@xxxxxx>
Reviewed-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
Acked-by: Nicolas Dufresne <nicolas.dufresne@xxxxxxxxxxxxx>
---
V9: No change
V8: Add Reviewed-by and Acked-by tags
V1->V6 (No change, patch introduced in V7)
---
.../media/platform/verisilicon/hantro_jpeg.c | 128 ++----------------
1 file changed, 14 insertions(+), 114 deletions(-)

diff --git a/drivers/media/platform/verisilicon/hantro_jpeg.c b/drivers/media/platform/verisilicon/hantro_jpeg.c
index d07b1b449b61..fa4e8ee92c05 100644
--- a/drivers/media/platform/verisilicon/hantro_jpeg.c
+++ b/drivers/media/platform/verisilicon/hantro_jpeg.c
@@ -11,6 +11,7 @@
#include <linux/build_bug.h>
#include <linux/kernel.h>
#include <linux/string.h>
+#include <media/v4l2-jpeg.h>
#include "hantro_jpeg.h"
#include "hantro.h"

@@ -24,42 +25,6 @@
#define HUFF_CHROMA_DC_OFF 394
#define HUFF_CHROMA_AC_OFF 427

-/* Default tables from JPEG ITU-T.81
- * (ISO/IEC 10918-1) Annex K, tables K.1 and K.2
- */
-static const unsigned char luma_q_table[] = {
- 0x10, 0x0b, 0x0a, 0x10, 0x18, 0x28, 0x33, 0x3d,
- 0x0c, 0x0c, 0x0e, 0x13, 0x1a, 0x3a, 0x3c, 0x37,
- 0x0e, 0x0d, 0x10, 0x18, 0x28, 0x39, 0x45, 0x38,
- 0x0e, 0x11, 0x16, 0x1d, 0x33, 0x57, 0x50, 0x3e,
- 0x12, 0x16, 0x25, 0x38, 0x44, 0x6d, 0x67, 0x4d,
- 0x18, 0x23, 0x37, 0x40, 0x51, 0x68, 0x71, 0x5c,
- 0x31, 0x40, 0x4e, 0x57, 0x67, 0x79, 0x78, 0x65,
- 0x48, 0x5c, 0x5f, 0x62, 0x70, 0x64, 0x67, 0x63
-};
-
-static const unsigned char chroma_q_table[] = {
- 0x11, 0x12, 0x18, 0x2f, 0x63, 0x63, 0x63, 0x63,
- 0x12, 0x15, 0x1a, 0x42, 0x63, 0x63, 0x63, 0x63,
- 0x18, 0x1a, 0x38, 0x63, 0x63, 0x63, 0x63, 0x63,
- 0x2f, 0x42, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
- 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
- 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
- 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
- 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63
-};
-
-static const unsigned char zigzag[] = {
- 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
-};
-
static const u32 hw_reorder[] = {
0, 8, 16, 24, 1, 9, 17, 25,
32, 40, 48, 56, 33, 41, 49, 57,
@@ -71,73 +36,6 @@ static const u32 hw_reorder[] = {
38, 46, 54, 62, 39, 47, 55, 63
};

-/* Huffman tables are shared with CODA */
-static const unsigned char luma_dc_table[] = {
- 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01,
- 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
- 0x08, 0x09, 0x0a, 0x0b,
-};
-
-static const unsigned char chroma_dc_table[] = {
- 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
- 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
- 0x08, 0x09, 0x0a, 0x0b,
-};
-
-static const unsigned char luma_ac_table[] = {
- 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03,
- 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7d,
- 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
- 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
- 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
- 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
- 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
- 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
- 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
- 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
- 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
- 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
- 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
- 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
- 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
- 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
- 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
- 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
- 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
- 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
- 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
- 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
- 0xf9, 0xfa,
-};
-
-static const unsigned char chroma_ac_table[] = {
- 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04,
- 0x07, 0x05, 0x04, 0x04, 0x00, 0x01, 0x02, 0x77,
- 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
- 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
- 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
- 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
- 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
- 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
- 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
- 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
- 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
- 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
- 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
- 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
- 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
- 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
- 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
- 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
- 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
- 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
- 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
- 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
- 0xf9, 0xfa,
-};
-
/* For simplicity, we keep a pre-formatted JPEG header,
* and we'll use fixed offsets to change the width, height
* quantization tables, etc.
@@ -291,10 +189,11 @@ jpeg_scale_quant_table(unsigned char *file_q_tab,
const unsigned char *tab, int scale)
{
int i;
+ const u8 *zigzag;

- BUILD_BUG_ON(ARRAY_SIZE(zigzag) != JPEG_QUANT_SIZE);
BUILD_BUG_ON(ARRAY_SIZE(hw_reorder) != JPEG_QUANT_SIZE);

+ v4l2_jpeg_get_zig_zag_scan(&zigzag);
for (i = 0; i < JPEG_QUANT_SIZE; i++) {
file_q_tab[i] = jpeg_scale_qp(tab[zigzag[i]], scale);
reordered_q_tab[i] = jpeg_scale_qp(tab[hw_reorder[i]], scale);
@@ -304,6 +203,7 @@ jpeg_scale_quant_table(unsigned char *file_q_tab,
static void jpeg_set_quality(struct hantro_jpeg_ctx *ctx)
{
int scale;
+ const u8 *luma_q_table, *chroma_q_table;

/*
* Non-linear scaling factor:
@@ -314,21 +214,23 @@ static void jpeg_set_quality(struct hantro_jpeg_ctx *ctx)
else
scale = 200 - 2 * ctx->quality;

- BUILD_BUG_ON(ARRAY_SIZE(luma_q_table) != JPEG_QUANT_SIZE);
- BUILD_BUG_ON(ARRAY_SIZE(chroma_q_table) != JPEG_QUANT_SIZE);
BUILD_BUG_ON(ARRAY_SIZE(ctx->hw_luma_qtable) != JPEG_QUANT_SIZE);
BUILD_BUG_ON(ARRAY_SIZE(ctx->hw_chroma_qtable) != JPEG_QUANT_SIZE);

+ v4l2_jpeg_get_reference_quantization_tables(&luma_q_table, &chroma_q_table);
jpeg_scale_quant_table(ctx->buffer + LUMA_QUANT_OFF,
- ctx->hw_luma_qtable, luma_q_table, scale);
+ ctx->hw_luma_qtable, (const unsigned char *)luma_q_table, scale);
jpeg_scale_quant_table(ctx->buffer + CHROMA_QUANT_OFF,
- ctx->hw_chroma_qtable, chroma_q_table, scale);
+ ctx->hw_chroma_qtable, (const unsigned char *)chroma_q_table, scale);
}

void hantro_jpeg_header_assemble(struct hantro_jpeg_ctx *ctx)
{
char *buf = ctx->buffer;
+ const u8 *luma_dc_table, *chroma_dc_table, *luma_ac_table, *chroma_ac_table;

+ v4l2_jpeg_get_reference_huffman_tables(&luma_dc_table, &luma_ac_table, &chroma_dc_table,
+ &chroma_ac_table);
memcpy(buf, hantro_jpeg_header,
sizeof(hantro_jpeg_header));

@@ -337,12 +239,10 @@ void hantro_jpeg_header_assemble(struct hantro_jpeg_ctx *ctx)
buf[WIDTH_OFF + 0] = ctx->width >> 8;
buf[WIDTH_OFF + 1] = ctx->width;

- memcpy(buf + HUFF_LUMA_DC_OFF, luma_dc_table, sizeof(luma_dc_table));
- memcpy(buf + HUFF_LUMA_AC_OFF, luma_ac_table, sizeof(luma_ac_table));
- memcpy(buf + HUFF_CHROMA_DC_OFF, chroma_dc_table,
- sizeof(chroma_dc_table));
- memcpy(buf + HUFF_CHROMA_AC_OFF, chroma_ac_table,
- sizeof(chroma_ac_table));
+ memcpy(buf + HUFF_LUMA_DC_OFF, luma_dc_table, V4L2_JPEG_REF_HT_DC_LEN);
+ memcpy(buf + HUFF_LUMA_AC_OFF, luma_ac_table, V4L2_JPEG_REF_HT_AC_LEN);
+ memcpy(buf + HUFF_CHROMA_DC_OFF, chroma_dc_table, V4L2_JPEG_REF_HT_DC_LEN);
+ memcpy(buf + HUFF_CHROMA_AC_OFF, chroma_ac_table, V4L2_JPEG_REF_HT_AC_LEN);

jpeg_set_quality(ctx);
}
--
2.39.1

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