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Correction for fast-forward/rewind

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1769 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Björn Stenberg 2002-08-15 16:48:34 +00:00
parent cb6bafd1f2
commit 749d87bb20
1 changed files with 23 additions and 2 deletions
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25
firmware/mpeg.c
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@ -451,7 +451,28 @@ static int get_unplayed_space(void)
{ {
int space = mp3buf_write - mp3buf_read; int space = mp3buf_write - mp3buf_read;
if (space < 0) if (space < 0)
space = mp3buflen + space; space += mp3buflen;
return space;
}
static int get_unplayed_space_current_song(void)
{
int space;
if (num_tracks_in_memory() > 1)
{
int track_offset = (tag_read_idx+1) & MAX_ID3_TAGS_MASK;
space = id3tags[track_offset]->mempos - mp3buf_read;
}
else
{
space = mp3buf_write - mp3buf_read;
}
if (space < 0)
space += mp3buflen;
return space; return space;
} }
@ -461,7 +482,7 @@ static void init_dma(void)
DAR3 = 0x5FFFEC3; DAR3 = 0x5FFFEC3;
CHCR3 &= ~0x0002; /* Clear interrupt */ CHCR3 &= ~0x0002; /* Clear interrupt */
CHCR3 = 0x1504; /* Single address destination, TXI0, IE=1 */ CHCR3 = 0x1504; /* Single address destination, TXI0, IE=1 */
last_dma_chunk_size = MIN(65536, get_unplayed_space()); last_dma_chunk_size = MIN(65536, get_unplayed_space_current_song());
DTCR3 = last_dma_chunk_size & 0xffff; DTCR3 = last_dma_chunk_size & 0xffff;
DMAOR = 0x0001; /* Enable DMA */ DMAOR = 0x0001; /* Enable DMA */
CHCR3 |= 0x0001; /* Enable DMA IRQ */ CHCR3 |= 0x0001; /* Enable DMA IRQ */