drivers/media/platform/st/sti/delta/delta-mjpeg.h

File Facts

System

Linux kernel

Corpus path

drivers/media/platform/st/sti/delta/delta-mjpeg.h

Extension

.h

Size

862 bytes

Lines

36

Domain

Driver Families

Bucket

drivers/media

Inferred role

Driver Families: implementation source

Status

source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• delta.h

Detected Declarations

• struct mjpeg_component
• struct mjpeg_header

Annotated Snippet

struct mjpeg_component {
	unsigned int id;/* 1=Y, 2=Cb, 3=Cr, 4=L, 5=Q */
	unsigned int h_sampling_factor;
	unsigned int v_sampling_factor;
	unsigned int quant_table_index;
};

#define MJPEG_MAX_COMPONENTS 5

struct mjpeg_header {
	unsigned int length;
	unsigned int sample_precision;
	unsigned int frame_width;
	unsigned int frame_height;
	unsigned int nb_of_components;
	struct mjpeg_component components[MJPEG_MAX_COMPONENTS];
};

int delta_mjpeg_read_header(struct delta_ctx *pctx,
			    unsigned char *data, unsigned int size,
			    struct mjpeg_header *header,
			    unsigned int *data_offset);

#endif /* DELTA_MJPEG_H */

Annotation

• Immediate include surface: `delta.h`.
• Detected declarations: `struct mjpeg_component`, `struct mjpeg_header`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.