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middleware/mjpeg/mjpeg.h

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+/**
+ * @file mjpeg.h
+ *
+ * Copyright (c) 2020 Semidrive Semiconductor.
+ * All rights reserved.
+ *
+ * Description:
+ *
+ * Revision History:
+ * -----------------
+ */
+#ifndef MJPEG_H
+#define MJPEG_H
+
+#include "tjpgd.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define MJPEG_WORKBUFF_SIZE (4096 * 4) // Recommended by TJPGD libray
+
+typedef enum {
+    JPEG_IO_SOURCE_C_ARRAY = 0,
+    JPEG_IO_SOURCE_DISK,
+} io_source_type;
+
+typedef enum {
+    JDF_444 = 0,
+    JDF_422,
+    JDF_420,
+} jformat;
+
+/* session identifier for input/output functions (name, members and usage are as
+ * user defined) */
+typedef struct {
+    io_source_type src_type;
+    uint8_t *bit_stream; /* input bs buffer*/
+    uint32_t bit_size;
+    uint32_t bits_offset;
+    uint8_t first_parse;
+
+    void *work_buf;
+    JDEC jdec;
+} jpg_session;
+
+typedef struct {
+    int x;
+    int y;
+    int w;
+    int h;
+} mjpeg_rect;
+
+typedef struct {
+    uint32_t width;
+    uint32_t height;
+    jformat format;
+    mjpeg_rect crop;
+} jpg_out_info;
+
+jpg_session *mjpeg_dec_init(io_source_type type, const void *data,
+                            uint32_t size);
+JRESULT mjpeg_dec_get_header_info(jpg_session *dec_session,
+                                  jpg_out_info *out_info);
+JRESULT mjpeg_dec_start_decompress(jpg_session *dec_session);
+JRESULT mjpeg_dec_parser_next_frame(jpg_session *dec_session);
+JRESULT mjpeg_dec_process_frame(jpg_session *dec_session, uint8_t *buf,
+                                uint32_t y_size, uint32_t u_size);
+void mjpeg_dec_deinit(jpg_session *dec_session);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*MJPEG_H*/