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media: v4l2-jpeg: Remove unused v4l2_jpeg_parse_* wrappers 

The functions:
  v4l2_jpeg_parse_huffman_tables()
  v4l2_jpeg_parse_quantization_tables()
  v4l2_jpeg_parse_scan_header()
and
  v4l2_jpeg_parse_frame_header()

were added in 2020 by
commit 50733b5b91 ("media: add v4l2 JPEG helpers")

but have remained unused.

Remove them.

They're all just wrappers around an underlying set of helpers,
which are all still called via v4l2_jpeg_parse_header().

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
pull/1279/head
Dr. David Alan Gilbert 2025-06-16 01:23:59 +01:00 committed by Hans Verkuil
parent 9314891df1
commit c3021d6a80
2 changed files with 0 additions and 89 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

80
drivers/media/v4l2-core/v4l2-jpeg.c
View File

@ -711,83 +711,3 @@ int v4l2_jpeg_parse_header(void *buf, size_t len, struct v4l2_jpeg_header *out)
return marker;
}
EXPORT_SYMBOL_GPL(v4l2_jpeg_parse_header);
/**
* v4l2_jpeg_parse_frame_header - parse frame header
* @buf: address of the frame header, after the SOF0 marker
* @len: length of the frame header
* @frame_header: returns the parsed frame header
*
* Returns 0 or negative error if parsing failed.
*/
int v4l2_jpeg_parse_frame_header(void *buf, size_t len,
struct v4l2_jpeg_frame_header *frame_header)
{
struct jpeg_stream stream;
stream.curr = buf;
stream.end = stream.curr + len;
return jpeg_parse_frame_header(&stream, SOF0, frame_header);
}
EXPORT_SYMBOL_GPL(v4l2_jpeg_parse_frame_header);
/**
* v4l2_jpeg_parse_scan_header - parse scan header
* @buf: address of the scan header, after the SOS marker
* @len: length of the scan header
* @scan_header: returns the parsed scan header
*
* Returns 0 or negative error if parsing failed.
*/
int v4l2_jpeg_parse_scan_header(void *buf, size_t len,
struct v4l2_jpeg_scan_header *scan_header)
{
struct jpeg_stream stream;
stream.curr = buf;
stream.end = stream.curr + len;
return jpeg_parse_scan_header(&stream, scan_header);
}
EXPORT_SYMBOL_GPL(v4l2_jpeg_parse_scan_header);
/**
* v4l2_jpeg_parse_quantization_tables - parse quantization tables segment
* @buf: address of the quantization table segment, after the DQT marker
* @len: length of the quantization table segment
* @precision: sample precision (P) in bits per component
* @q_tables: returns four references into the buffer for the
* four possible quantization table destinations
*
* Returns 0 or negative error if parsing failed.
*/
int v4l2_jpeg_parse_quantization_tables(void *buf, size_t len, u8 precision,
struct v4l2_jpeg_reference *q_tables)
{
struct jpeg_stream stream;
stream.curr = buf;
stream.end = stream.curr + len;
return jpeg_parse_quantization_tables(&stream, precision, q_tables);
}
EXPORT_SYMBOL_GPL(v4l2_jpeg_parse_quantization_tables);
/**
* v4l2_jpeg_parse_huffman_tables - parse huffman tables segment
* @buf: address of the Huffman table segment, after the DHT marker
* @len: length of the Huffman table segment
* @huffman_tables: returns four references into the buffer for the
* four possible Huffman table destinations, in
* the order DC0, DC1, AC0, AC1
*
* Returns 0 or negative error if parsing failed.
*/
int v4l2_jpeg_parse_huffman_tables(void *buf, size_t len,
struct v4l2_jpeg_reference *huffman_tables)
{
struct jpeg_stream stream;
stream.curr = buf;
stream.end = stream.curr + len;
return jpeg_parse_huffman_tables(&stream, huffman_tables);
}
EXPORT_SYMBOL_GPL(v4l2_jpeg_parse_huffman_tables);

9
include/media/v4l2-jpeg.h
View File

@ -169,15 +169,6 @@ struct v4l2_jpeg_header {
int v4l2_jpeg_parse_header(void *buf, size_t len, struct v4l2_jpeg_header *out);
int v4l2_jpeg_parse_frame_header(void *buf, size_t len,
struct v4l2_jpeg_frame_header *frame_header);
int v4l2_jpeg_parse_scan_header(void *buf, size_t len,
struct v4l2_jpeg_scan_header *scan_header);
int v4l2_jpeg_parse_quantization_tables(void *buf, size_t len, u8 precision,
struct v4l2_jpeg_reference *q_tables);
int v4l2_jpeg_parse_huffman_tables(void *buf, size_t len,
struct v4l2_jpeg_reference *huffman_tables);
extern const u8 v4l2_jpeg_zigzag_scan_index[V4L2_JPEG_PIXELS_IN_BLOCK];
extern const u8 v4l2_jpeg_ref_table_luma_qt[V4L2_JPEG_PIXELS_IN_BLOCK];
extern const u8 v4l2_jpeg_ref_table_chroma_qt[V4L2_JPEG_PIXELS_IN_BLOCK];