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Diffstat (limited to 'apps/mp3data.c')
-rw-r--r--apps/mp3data.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/apps/mp3data.c b/apps/mp3data.c
index 89af49849f..31ed492679 100644
--- a/apps/mp3data.c
+++ b/apps/mp3data.c
@@ -213,6 +213,19 @@ static bool headers_have_same_type(unsigned long header1,
213 return header1 ? (header1 == header2) : true; 213 return header1 ? (header1 == header2) : true;
214} 214}
215 215
216/* Helper function to read 4-byte in big endian format. */
217static void read_uint32be_mp3data(int fd, unsigned long *data, long *pos)
218{
219#ifdef ROCKBOX_BIG_ENDIAN
220 (void)read(fd, (char*)data, 4);
221#else
222 char tmp[4];
223 (void)read(fd, tmp, 4);
224 *data = (tmp[0]<<24) | (tmp[1]<<16) | (tmp[2]<<8) | tmp[3];
225#endif
226 *pos += 4;
227}
228
216static unsigned long __find_next_frame(int fd, long *offset, long max_offset, 229static unsigned long __find_next_frame(int fd, long *offset, long max_offset,
217 unsigned long reference_header, 230 unsigned long reference_header,
218 int(*getfunc)(int fd, unsigned char *c), 231 int(*getfunc)(int fd, unsigned char *c),
@@ -259,7 +272,8 @@ static unsigned long __find_next_frame(int fd, long *offset, long max_offset,
259 /* Read possible next frame header and seek back to last frame 272 /* Read possible next frame header and seek back to last frame
260 * headers byte position. */ 273 * headers byte position. */
261 reference_header = 0; 274 reference_header = 0;
262 read_uint32be(fd, (uint32_t*)&reference_header); 275 read_uint32be_mp3data(fd, &reference_header, &pos);
276 //
263 lseek(fd, -info.frame_size, SEEK_CUR); 277 lseek(fd, -info.frame_size, SEEK_CUR);
264 278
265 /* If the current header is of the same type as the previous 279 /* If the current header is of the same type as the previous