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stm32_radio: Updated the VBR average bitrate calculation. 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@425 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
kyle.hu.gz 2010-02-19 15:04:35 +00:00
parent 39c53a4b71
commit 579a566b44
1 changed files with 2 additions and 1 deletions
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3
bsp/stm32_radio/mp3.c
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@ -410,6 +410,7 @@ void mp3_get_info(const char* filename, struct tag_info* info)
{ {
rt_uint32_t frames = ((rt_uint32_t) mp3_fd_buffer[p + 8] << 24) | ((rt_uint32_t) mp3_fd_buffer[p + 9] << 16) | ((rt_uint32_t) mp3_fd_buffer[p + 10] << 8) | (rt_uint32_t) mp3_fd_buffer[p + 11]; rt_uint32_t frames = ((rt_uint32_t) mp3_fd_buffer[p + 8] << 24) | ((rt_uint32_t) mp3_fd_buffer[p + 9] << 16) | ((rt_uint32_t) mp3_fd_buffer[p + 10] << 8) | (rt_uint32_t) mp3_fd_buffer[p + 11];
info->duration = frames * samples_per_frame / frame_info.samprate; info->duration = frames * samples_per_frame / frame_info.samprate;
info->bit_rate = lseek(fd, 0, SEEK_END) * 8 / info->duration;
} }
} }
/* /*
@ -420,8 +421,8 @@ void mp3_get_info(const char* filename, struct tag_info* info)
{ {
// CBR // CBR
info->duration = lseek(fd, 0, SEEK_END) / (frame_info.bitrate / 8); /* second */ info->duration = lseek(fd, 0, SEEK_END) / (frame_info.bitrate / 8); /* second */
info->bit_rate = frame_info.bitrate;
} }
info->bit_rate = frame_info.bitrate;
info->sampling = frame_info.samprate; info->sampling = frame_info.samprate;
} }