struct vb2_buffer *buf;
int gamma, ret, value;
u32 dst_fourcc;
+ u32 stride;
q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
return -EFAULT;
}
+ if (dst_fourcc == V4L2_PIX_FMT_JPEG) {
+ if (!ctx->params.jpeg_qmat_tab[0])
+ ctx->params.jpeg_qmat_tab[0] = kmalloc(64, GFP_KERNEL);
+ if (!ctx->params.jpeg_qmat_tab[1])
+ ctx->params.jpeg_qmat_tab[1] = kmalloc(64, GFP_KERNEL);
+ coda_set_jpeg_compression_quality(ctx, ctx->params.jpeg_quality);
+ }
+
mutex_lock(&dev->coda_mutex);
coda_write(dev, ctx->parabuf.paddr, CODA_REG_BIT_PARA_BUF_ADDR);
<< CODA_PICHEIGHT_OFFSET;
}
coda_write(dev, value, CODA_CMD_ENC_SEQ_SRC_SIZE);
+ if (dst_fourcc == V4L2_PIX_FMT_JPEG)
+ ctx->params.framerate = 0;
coda_write(dev, ctx->params.framerate,
CODA_CMD_ENC_SEQ_SRC_F_RATE);
}
coda_write(dev, value, CODA_CMD_ENC_SEQ_264_PARA);
break;
+ case V4L2_PIX_FMT_JPEG:
+ coda_write(dev, 0, CODA_CMD_ENC_SEQ_JPG_PARA);
+ coda_write(dev, ctx->params.jpeg_restart_interval,
+ CODA_CMD_ENC_SEQ_JPG_RST_INTERVAL);
+ coda_write(dev, 0, CODA_CMD_ENC_SEQ_JPG_THUMB_EN);
+ coda_write(dev, 0, CODA_CMD_ENC_SEQ_JPG_THUMB_SIZE);
+ coda_write(dev, 0, CODA_CMD_ENC_SEQ_JPG_THUMB_OFFSET);
+
+ coda_jpeg_write_tables(ctx);
+ break;
default:
v4l2_err(v4l2_dev,
"dst format (0x%08x) invalid.\n", dst_fourcc);
goto out;
}
- switch (ctx->params.slice_mode) {
- case V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE:
- value = 0;
- break;
- case V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB:
- value = (ctx->params.slice_max_mb & CODA_SLICING_SIZE_MASK)
- << CODA_SLICING_SIZE_OFFSET;
- value |= (1 & CODA_SLICING_UNIT_MASK)
- << CODA_SLICING_UNIT_OFFSET;
- value |= 1 & CODA_SLICING_MODE_MASK;
- break;
- case V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES:
- value = (ctx->params.slice_max_bits & CODA_SLICING_SIZE_MASK)
- << CODA_SLICING_SIZE_OFFSET;
- value |= (0 & CODA_SLICING_UNIT_MASK)
- << CODA_SLICING_UNIT_OFFSET;
- value |= 1 & CODA_SLICING_MODE_MASK;
- break;
+ /*
+ * slice mode and GOP size registers are used for thumb size/offset
+ * in JPEG mode
+ */
+ if (dst_fourcc != V4L2_PIX_FMT_JPEG) {
+ switch (ctx->params.slice_mode) {
+ case V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE:
+ value = 0;
+ break;
+ case V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB:
+ value = (ctx->params.slice_max_mb &
+ CODA_SLICING_SIZE_MASK)
+ << CODA_SLICING_SIZE_OFFSET;
+ value |= (1 & CODA_SLICING_UNIT_MASK)
+ << CODA_SLICING_UNIT_OFFSET;
+ value |= 1 & CODA_SLICING_MODE_MASK;
+ break;
+ case V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES:
+ value = (ctx->params.slice_max_bits &
+ CODA_SLICING_SIZE_MASK)
+ << CODA_SLICING_SIZE_OFFSET;
+ value |= (0 & CODA_SLICING_UNIT_MASK)
+ << CODA_SLICING_UNIT_OFFSET;
+ value |= 1 & CODA_SLICING_MODE_MASK;
+ break;
+ }
+ coda_write(dev, value, CODA_CMD_ENC_SEQ_SLICE_MODE);
+ value = ctx->params.gop_size & CODA_GOP_SIZE_MASK;
+ coda_write(dev, value, CODA_CMD_ENC_SEQ_GOP_SIZE);
}
- coda_write(dev, value, CODA_CMD_ENC_SEQ_SLICE_MODE);
- value = ctx->params.gop_size & CODA_GOP_SIZE_MASK;
- coda_write(dev, value, CODA_CMD_ENC_SEQ_GOP_SIZE);
if (ctx->params.bitrate) {
/* Rate control enabled */
goto out;
}
- if (dev->devtype->product == CODA_960)
- ctx->num_internal_frames = 4;
- else
- ctx->num_internal_frames = 2;
- ret = coda_alloc_framebuffers(ctx, q_data_src, dst_fourcc);
- if (ret < 0) {
- v4l2_err(v4l2_dev, "failed to allocate framebuffers\n");
- goto out;
+ if (dst_fourcc != V4L2_PIX_FMT_JPEG) {
+ if (dev->devtype->product == CODA_960)
+ ctx->num_internal_frames = 4;
+ else
+ ctx->num_internal_frames = 2;
+ ret = coda_alloc_framebuffers(ctx, q_data_src, dst_fourcc);
+ if (ret < 0) {
+ v4l2_err(v4l2_dev, "failed to allocate framebuffers\n");
+ goto out;
+ }
+ stride = q_data_src->bytesperline;
+ } else {
+ ctx->num_internal_frames = 0;
+ stride = 0;
}
-
coda_write(dev, ctx->num_internal_frames, CODA_CMD_SET_FRAME_BUF_NUM);
- coda_write(dev, q_data_src->bytesperline,
- CODA_CMD_SET_FRAME_BUF_STRIDE);
+ coda_write(dev, stride, CODA_CMD_SET_FRAME_BUF_STRIDE);
+
if (dev->devtype->product == CODA_7541) {
coda_write(dev, q_data_src->bytesperline,
CODA7_CMD_SET_FRAME_SOURCE_BUF_STRIDE);
case V4L2_PIX_FMT_MPEG4:
quant_param = ctx->params.mpeg4_intra_qp;
break;
+ case V4L2_PIX_FMT_JPEG:
+ quant_param = 30;
+ break;
default:
v4l2_warn(&ctx->dev->v4l2_dev,
"cannot set intra qp, fmt not supported\n");
if ((dev->devtype->product == CODA_7541) ||
(dev->devtype->product == CODA_960))
val |= CODA_REORDER_ENABLE;
+ if (ctx->codec->src_fourcc == V4L2_PIX_FMT_JPEG)
+ val |= CODA_NO_INT_ENABLE;
coda_write(dev, val, CODA_CMD_DEC_SEQ_OPTION);
ctx->params.codec_mode = ctx->codec->mode;
.name = "MPEG4 Encoded Stream",
.fourcc = V4L2_PIX_FMT_MPEG4,
},
+ {
+ .name = "JPEG Encoded Images",
+ .fourcc = V4L2_PIX_FMT_JPEG,
+ },
};
#define CODA_CODEC(mode, src_fourcc, dst_fourcc, max_w, max_h) \
static const struct coda_codec coda7_codecs[] = {
CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264, 1280, 720),
CODA_CODEC(CODA7_MODE_ENCODE_MP4, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 1280, 720),
+ CODA_CODEC(CODA7_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG, 8192, 8192),
CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264, V4L2_PIX_FMT_YUV420, 1920, 1088),
CODA_CODEC(CODA7_MODE_DECODE_MP4, V4L2_PIX_FMT_MPEG4, V4L2_PIX_FMT_YUV420, 1920, 1088),
+ CODA_CODEC(CODA7_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG, V4L2_PIX_FMT_YUV420, 8192, 8192),
};
static const struct coda_codec coda9_codecs[] = {
},
};
+static const struct coda_video_device coda_bit_jpeg_encoder = {
+ .name = "coda-jpeg-encoder",
+ .type = CODA_INST_ENCODER,
+ .ops = &coda_bit_encode_ops,
+ .src_formats = {
+ V4L2_PIX_FMT_YUV420,
+ V4L2_PIX_FMT_YVU420,
+ V4L2_PIX_FMT_NV12,
+ V4L2_PIX_FMT_YUV422P,
+ },
+ .dst_formats = {
+ V4L2_PIX_FMT_JPEG,
+ },
+};
+
static const struct coda_video_device coda_bit_decoder = {
.name = "coda-decoder",
.type = CODA_INST_DECODER,
},
};
+static const struct coda_video_device coda_bit_jpeg_decoder = {
+ .name = "coda-jpeg-decoder",
+ .type = CODA_INST_DECODER,
+ .ops = &coda_bit_decode_ops,
+ .src_formats = {
+ V4L2_PIX_FMT_JPEG,
+ },
+ .dst_formats = {
+ V4L2_PIX_FMT_YUV420,
+ V4L2_PIX_FMT_YVU420,
+ V4L2_PIX_FMT_NV12,
+ V4L2_PIX_FMT_YUV422P,
+ },
+};
+
static const struct coda_video_device *codadx6_video_devices[] = {
&coda_bit_encoder,
};
static const struct coda_video_device *coda7_video_devices[] = {
+ &coda_bit_jpeg_encoder,
+ &coda_bit_jpeg_decoder,
&coda_bit_encoder,
&coda_bit_decoder,
};
f->fmt.pix.bytesperline = q_data->bytesperline;
f->fmt.pix.sizeimage = q_data->sizeimage;
- f->fmt.pix.colorspace = ctx->colorspace;
+ if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_JPEG)
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
+ else
+ f->fmt.pix.colorspace = ctx->colorspace;
return 0;
}
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_YVU420:
case V4L2_PIX_FMT_NV12:
- /* Frame stride must be multiple of 8, but 16 for h.264 */
+ /*
+ * Frame stride must be at least multiple of 8,
+ * but multiple of 16 for h.264 or JPEG 4:2:x
+ */
f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
f->fmt.pix.height * 3 / 2;
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
f->fmt.pix.height * 2;
break;
+ case V4L2_PIX_FMT_JPEG:
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
+ /* fallthrough */
case V4L2_PIX_FMT_H264:
case V4L2_PIX_FMT_MPEG4:
- case V4L2_PIX_FMT_JPEG:
f->fmt.pix.bytesperline = 0;
f->fmt.pix.sizeimage = CODA_MAX_FRAME_SIZE;
break;
if (ret < 0)
return ret;
- if (!f->fmt.pix.colorspace)
- f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
+ if (!f->fmt.pix.colorspace) {
+ if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_JPEG)
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
+ else
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
+ }
q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
if (ctx->hold ||
((ctx->inst_type == CODA_INST_DECODER) &&
+ !v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) &&
(coda_get_bitstream_payload(ctx) < 512) &&
!(ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG))) {
v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
* In the decoder case, immediately try to copy the buffer into the
* bitstream ringbuffer and mark it as ready to be dequeued.
*/
- if (q_data->fourcc == V4L2_PIX_FMT_H264 &&
+ if (ctx->inst_type == CODA_INST_DECODER &&
vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
/*
* For backwards compatibility, queuing an empty buffer marks
struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
struct coda_q_data *q_data_src, *q_data_dst;
struct vb2_buffer *buf;
- u32 dst_fourcc;
int ret = 0;
q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
- if (q_data_src->fourcc == V4L2_PIX_FMT_H264) {
+ if (q_data_src->fourcc == V4L2_PIX_FMT_H264 ||
+ (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
+ ctx->dev->devtype->product == CODA_7541)) {
/* copy the buffers that where queued before streamon */
mutex_lock(&ctx->bitstream_mutex);
coda_fill_bitstream(ctx);
if (!(ctx->streamon_out & ctx->streamon_cap))
return 0;
- /* Allow decoder device_run with no new buffers queued */
+ /* Allow BIT decoder device_run with no new buffers queued */
if (ctx->inst_type == CODA_INST_DECODER)
v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
ctx->gopcounter = ctx->params.gop_size - 1;
q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
- dst_fourcc = q_data_dst->fourcc;
ctx->codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
q_data_dst->fourcc);
goto err;
}
+ if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
+ ctx->params.gop_size = 1;
+ ctx->gopcounter = ctx->params.gop_size - 1;
+
ret = ctx->ops->start_streaming(ctx);
if (ctx->inst_type == CODA_INST_DECODER) {
if (ret == -EAGAIN)
case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
ctx->params.intra_refresh = ctrl->val;
break;
+ case V4L2_CID_JPEG_COMPRESSION_QUALITY:
+ coda_set_jpeg_compression_quality(ctx, ctrl->val);
+ break;
+ case V4L2_CID_JPEG_RESTART_INTERVAL:
+ ctx->params.jpeg_restart_interval = ctrl->val;
+ break;
default:
v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
"Invalid control, id=%d, val=%d\n",
1920 * 1088 / 256, 1, 0);
}
+static void coda_jpeg_encode_ctrls(struct coda_ctx *ctx)
+{
+ v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+ V4L2_CID_JPEG_COMPRESSION_QUALITY, 5, 100, 1, 50);
+ v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+ V4L2_CID_JPEG_RESTART_INTERVAL, 0, 100, 1, 0);
+}
+
static int coda_ctrls_setup(struct coda_ctx *ctx)
{
v4l2_ctrl_handler_init(&ctx->ctrls, 2);
V4L2_CID_HFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
- if (ctx->inst_type == CODA_INST_ENCODER)
- coda_encode_ctrls(ctx);
+ if (ctx->inst_type == CODA_INST_ENCODER) {
+ if (ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG)
+ coda_jpeg_encode_ctrls(ctx);
+ else
+ coda_encode_ctrls(ctx);
+ }
if (ctx->ctrls.error) {
v4l2_err(&ctx->dev->v4l2_dev,
ctx->fh.ctrl_handler = &ctx->ctrls;
- ret = coda_alloc_context_buf(ctx, &ctx->parabuf, CODA_PARA_BUF_SIZE,
- "parabuf");
+ ret = coda_alloc_context_buf(ctx, &ctx->parabuf,
+ CODA_PARA_BUF_SIZE, "parabuf");
if (ret < 0) {
v4l2_err(&dev->v4l2_dev, "failed to allocate parabuf");
goto err_dma_alloc;
}
ctx->bitstream.size = CODA_MAX_FRAME_SIZE;
- ctx->bitstream.vaddr = dma_alloc_writecombine(&dev->plat_dev->dev,
- ctx->bitstream.size, &ctx->bitstream.paddr, GFP_KERNEL);
+ ctx->bitstream.vaddr = dma_alloc_writecombine(
+ &dev->plat_dev->dev, ctx->bitstream.size,
+ &ctx->bitstream.paddr, GFP_KERNEL);
if (!ctx->bitstream.vaddr) {
v4l2_err(&dev->v4l2_dev,
"failed to allocate bitstream ringbuffer");
list_del(&ctx->list);
coda_unlock(ctx);
- dma_free_writecombine(&dev->plat_dev->dev, ctx->bitstream.size,
- ctx->bitstream.vaddr, ctx->bitstream.paddr);
+ if (ctx->bitstream.vaddr) {
+ dma_free_writecombine(&dev->plat_dev->dev, ctx->bitstream.size,
+ ctx->bitstream.vaddr, ctx->bitstream.paddr);
+ }
if (ctx->dev->devtype->product == CODA_DX6)
coda_free_aux_buf(dev, &ctx->workbuf);
--- /dev/null
+/*
+ * Coda multi-standard codec IP - JPEG support functions
+ *
+ * Copyright (C) 2014 Philipp Zabel, Pengutronix
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/swab.h>
+
+#include "coda.h"
+
+/*
+ * Typical Huffman tables for 8-bit precision luminance and
+ * chrominance from JPEG ITU-T.81 (ISO/IEC 10918-1) Annex K.3
+ */
+
+static const unsigned char luma_dc_bits[16] = {
+ 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static const unsigned char luma_dc_value[12] = {
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b,
+};
+
+static const unsigned char chroma_dc_bits[16] = {
+ 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+};
+
+static const unsigned char chroma_dc_value[12] = {
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b,
+};
+
+static const unsigned char luma_ac_bits[16] = {
+ 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03,
+ 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7d,
+};
+
+static const unsigned char luma_ac_value[162 + 2] = {
+ 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, /* padded to 32-bit */
+};
+
+static const unsigned char chroma_ac_bits[16] = {
+ 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04,
+ 0x07, 0x05, 0x04, 0x04, 0x00, 0x01, 0x02, 0x77,
+};
+
+static const unsigned char chroma_ac_value[162 + 2] = {
+ 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, /* padded to 32-bit */
+};
+
+/*
+ * Quantization tables for luminance and chrominance components in
+ * zig-zag scan order from the Freescale i.MX VPU libaries
+ */
+
+static unsigned char luma_q[64] = {
+ 0x06, 0x04, 0x04, 0x04, 0x05, 0x04, 0x06, 0x05,
+ 0x05, 0x06, 0x09, 0x06, 0x05, 0x06, 0x09, 0x0b,
+ 0x08, 0x06, 0x06, 0x08, 0x0b, 0x0c, 0x0a, 0x0a,
+ 0x0b, 0x0a, 0x0a, 0x0c, 0x10, 0x0c, 0x0c, 0x0c,
+ 0x0c, 0x0c, 0x0c, 0x10, 0x0c, 0x0c, 0x0c, 0x0c,
+ 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+ 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+ 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+};
+
+static unsigned char chroma_q[64] = {
+ 0x07, 0x07, 0x07, 0x0d, 0x0c, 0x0d, 0x18, 0x10,
+ 0x10, 0x18, 0x14, 0x0e, 0x0e, 0x0e, 0x14, 0x14,
+ 0x0e, 0x0e, 0x0e, 0x0e, 0x14, 0x11, 0x0c, 0x0c,
+ 0x0c, 0x0c, 0x0c, 0x11, 0x11, 0x0c, 0x0c, 0x0c,
+ 0x0c, 0x0c, 0x0c, 0x11, 0x0c, 0x0c, 0x0c, 0x0c,
+ 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+ 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+ 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+};
+
+struct coda_memcpy_desc {
+ int offset;
+ const void *src;
+ size_t len;
+};
+
+static void coda_memcpy_parabuf(void *parabuf,
+ const struct coda_memcpy_desc *desc)
+{
+ u32 *dst = parabuf + desc->offset;
+ const u32 *src = desc->src;
+ int len = desc->len / 4;
+ int i;
+
+ for (i = 0; i < len; i += 2) {
+ dst[i + 1] = swab32(src[i]);
+ dst[i] = swab32(src[i + 1]);
+ }
+}
+
+int coda_jpeg_write_tables(struct coda_ctx *ctx)
+{
+ int i;
+ static const struct coda_memcpy_desc huff[8] = {
+ { 0, luma_dc_bits, sizeof(luma_dc_bits) },
+ { 16, luma_dc_value, sizeof(luma_dc_value) },
+ { 32, luma_ac_bits, sizeof(luma_ac_bits) },
+ { 48, luma_ac_value, sizeof(luma_ac_value) },
+ { 216, chroma_dc_bits, sizeof(chroma_dc_bits) },
+ { 232, chroma_dc_value, sizeof(chroma_dc_value) },
+ { 248, chroma_ac_bits, sizeof(chroma_ac_bits) },
+ { 264, chroma_ac_value, sizeof(chroma_ac_value) },
+ };
+ struct coda_memcpy_desc qmat[3] = {
+ { 512, ctx->params.jpeg_qmat_tab[0], 64 },
+ { 576, ctx->params.jpeg_qmat_tab[1], 64 },
+ { 640, ctx->params.jpeg_qmat_tab[1], 64 },
+ };
+
+ /* Write huffman tables to parameter memory */
+ for (i = 0; i < ARRAY_SIZE(huff); i++)
+ coda_memcpy_parabuf(ctx->parabuf.vaddr, huff + i);
+
+ /* Write Q-matrix to parameter memory */
+ for (i = 0; i < ARRAY_SIZE(qmat); i++)
+ coda_memcpy_parabuf(ctx->parabuf.vaddr, qmat + i);
+
+ return 0;
+}
+
+/*
+ * Scale quantization table using nonlinear scaling factor
+ * u8 qtab[64], scale [50,190]
+ */
+static void coda_scale_quant_table(u8 *q_tab, int scale)
+{
+ unsigned int temp;
+ int i;
+
+ for (i = 0; i < 64; i++) {
+ temp = DIV_ROUND_CLOSEST((unsigned int)q_tab[i] * scale, 100);
+ if (temp <= 0)
+ temp = 1;
+ if (temp > 255)
+ temp = 255;
+ q_tab[i] = (unsigned char)temp;
+ }
+}
+
+void coda_set_jpeg_compression_quality(struct coda_ctx *ctx, int quality)
+{
+ unsigned int scale;
+
+ ctx->params.jpeg_quality = quality;
+
+ /* Clip quality setting to [5,100] interval */
+ if (quality > 100)
+ quality = 100;
+ if (quality < 5)
+ quality = 5;
+
+ /*
+ * Non-linear scaling factor:
+ * [5,50] -> [1000..100], [51,100] -> [98..0]
+ */
+ if (quality < 50)
+ scale = 5000 / quality;
+ else
+ scale = 200 - 2 * quality;
+
+ if (ctx->params.jpeg_qmat_tab[0]) {
+ memcpy(ctx->params.jpeg_qmat_tab[0], luma_q, 64);
+ coda_scale_quant_table(ctx->params.jpeg_qmat_tab[0], scale);
+ }
+ if (ctx->params.jpeg_qmat_tab[1]) {
+ memcpy(ctx->params.jpeg_qmat_tab[1], chroma_q, 64);
+ coda_scale_quant_table(ctx->params.jpeg_qmat_tab[1], scale);
+ }
+}
projects / linux.git / commitdiff