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-rw-r--r--apps/codecs/aiff.c28
-rw-r--r--apps/codecs/au.c27
-rw-r--r--apps/codecs/libpcm/dialogic_oki_adpcm.c20
-rw-r--r--apps/codecs/libpcm/dvi_adpcm.c8
-rw-r--r--apps/codecs/libpcm/ieee_float.c8
-rw-r--r--apps/codecs/libpcm/itut_g711.c8
-rw-r--r--apps/codecs/libpcm/linear_pcm.c8
-rw-r--r--apps/codecs/libpcm/ms_adpcm.c8
-rw-r--r--apps/codecs/libpcm/pcm_common.h13
-rw-r--r--apps/codecs/libpcm/qt_ima_adpcm.c8
-rw-r--r--apps/codecs/libpcm/swf_adpcm.c15
-rw-r--r--apps/codecs/libpcm/yamaha_adpcm.c11
-rw-r--r--apps/codecs/smaf.c25
-rw-r--r--apps/codecs/vox.c37
-rw-r--r--apps/codecs/wav.c16
-rw-r--r--apps/codecs/wav64.c16
16 files changed, 187 insertions, 69 deletions
diff --git a/apps/codecs/aiff.c b/apps/codecs/aiff.c
index 62d79ac340..4e16788e06 100644
--- a/apps/codecs/aiff.c
+++ b/apps/codecs/aiff.c
@@ -100,6 +100,9 @@ next_track:
codec_set_replaygain(ci->id3);
+ /* Need to save offset for later use (cleared indirectly by advance_buffer) */
+ bytesdone = ci->id3->offset;
+
/* assume the AIFF header is less than 1024 bytes */
buf = ci->request_buffer(&n, 1024);
if (n < 54) {
@@ -279,9 +282,26 @@ next_track:
firstblockposn = 1024 - n;
ci->advance_buffer(firstblockposn);
+ /* make sure we're at the correct offset */
+ if (bytesdone > (uint32_t) firstblockposn) {
+ /* Round down to previous block */
+ struct pcm_pos *newpos = codec->get_seek_pos(bytesdone - firstblockposn,
+ PCM_SEEK_POS, NULL);
+
+ if (newpos->pos > format.numbytes)
+ goto done;
+ if (ci->seek_buffer(firstblockposn + newpos->pos))
+ {
+ bytesdone = newpos->pos;
+ decodedsamples = newpos->samples;
+ }
+ ci->seek_complete();
+ } else {
+ /* already where we need to be */
+ bytesdone = 0;
+ }
+
/* The main decoder loop */
- bytesdone = 0;
- ci->set_elapsed(0);
endofstream = 0;
while (!endofstream) {
@@ -290,8 +310,8 @@ next_track:
break;
if (ci->seek_time) {
- /* 2nd args(read_buffer) is unnecessary in the format which AIFF supports. */
- struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, NULL);
+ /* 3rd args(read_buffer) is unnecessary in the format which AIFF supports. */
+ struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, PCM_SEEK_TIME, NULL);
if (newpos->pos > format.numbytes)
break;
diff --git a/apps/codecs/au.c b/apps/codecs/au.c
index 19348bc299..1e6af25924 100644
--- a/apps/codecs/au.c
+++ b/apps/codecs/au.c
@@ -135,6 +135,9 @@ next_track:
codec_set_replaygain(ci->id3);
+ /* Need to save offset for later use (cleared indirectly by advance_buffer) */
+ bytesdone = ci->id3->offset;
+
ci->memset(&format, 0, sizeof(struct pcm_format));
format.is_signed = true;
format.is_little_endian = false;
@@ -191,7 +194,6 @@ next_track:
decodedsamples = 0;
codec = 0;
- bytesdone = 0;
/* get codec */
codec = get_au_codec(format.formattag);
@@ -236,6 +238,25 @@ next_track:
goto done;
}
+ /* make sure we're at the correct offset */
+ if (bytesdone > (uint32_t) firstblockposn) {
+ /* Round down to previous block */
+ struct pcm_pos *newpos = codec->get_seek_pos(bytesdone - firstblockposn,
+ PCM_SEEK_POS, NULL);
+
+ if (newpos->pos > format.numbytes)
+ goto done;
+ if (ci->seek_buffer(firstblockposn + newpos->pos))
+ {
+ bytesdone = newpos->pos;
+ decodedsamples = newpos->samples;
+ }
+ ci->seek_complete();
+ } else {
+ /* already where we need to be */
+ bytesdone = 0;
+ }
+
/* The main decoder loop */
endofstream = 0;
@@ -246,8 +267,8 @@ next_track:
}
if (ci->seek_time) {
- /* 2nd args(read_buffer) is unnecessary in the format which Sun Audio supports. */
- struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, NULL);
+ /* 3rd args(read_buffer) is unnecessary in the format which Sun Audio supports. */
+ struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, PCM_SEEK_TIME, NULL);
if (newpos->pos > format.numbytes)
break;
diff --git a/apps/codecs/libpcm/dialogic_oki_adpcm.c b/apps/codecs/libpcm/dialogic_oki_adpcm.c
index 62d092e677..4a6465f196 100644
--- a/apps/codecs/libpcm/dialogic_oki_adpcm.c
+++ b/apps/codecs/libpcm/dialogic_oki_adpcm.c
@@ -44,6 +44,7 @@ static const int index_table[] ICONST_ATTR = {
};
static struct adpcm_data cur_data;
+static int blocksperchunk;
static struct pcm_format *fmt;
@@ -71,7 +72,8 @@ static bool set_format(struct pcm_format *format)
fmt->samplesperblock = 2;
/* chunksize = about 1/32[sec] data */
- fmt->chunksize = ci->id3->frequency >> 6;
+ blocksperchunk = ci->id3->frequency >> 6;
+ fmt->chunksize = blocksperchunk * fmt->blockalign;
max_chunk_count = (uint64_t)ci->id3->length * ci->id3->frequency
/ (2000LL * fmt->chunksize);
@@ -146,20 +148,18 @@ static int decode_for_seek(const uint8_t *inbuf, size_t inbufsize)
return CODEC_OK;
}
-static struct pcm_pos *get_seek_pos(long seek_time,
+static struct pcm_pos *get_seek_pos(uint32_t seek_val, int seek_mode,
uint8_t *(*read_buffer)(size_t *realsize))
{
static struct pcm_pos newpos;
- uint32_t seek_count = 0;
- uint32_t new_count;
+ uint32_t seek_count = (seek_mode == PCM_SEEK_TIME)?
+ ((uint64_t)seek_val * ci->id3->frequency / 1000LL)
+ / (blocksperchunk * fmt->samplesperblock) :
+ seek_val / fmt->chunksize;
+ uint32_t new_count = seek(seek_count, &cur_data, read_buffer, &decode_for_seek);
- if (seek_time > 0)
- seek_count = (uint64_t)seek_time * ci->id3->frequency
- / (2000LL * fmt->chunksize);
-
- new_count = seek(seek_count, &cur_data, read_buffer, &decode_for_seek);
newpos.pos = new_count * fmt->chunksize;
- newpos.samples = (newpos.pos / fmt->blockalign) * fmt->samplesperblock;
+ newpos.samples = new_count * blocksperchunk * fmt->samplesperblock;
return &newpos;
}
diff --git a/apps/codecs/libpcm/dvi_adpcm.c b/apps/codecs/libpcm/dvi_adpcm.c
index 2784b21786..2e702ca394 100644
--- a/apps/codecs/libpcm/dvi_adpcm.c
+++ b/apps/codecs/libpcm/dvi_adpcm.c
@@ -54,12 +54,14 @@ static bool set_format(struct pcm_format *format)
return true;
}
-static struct pcm_pos *get_seek_pos(long seek_time,
+static struct pcm_pos *get_seek_pos(uint32_t seek_val, int seek_mode,
uint8_t *(*read_buffer)(size_t *realsize))
{
static struct pcm_pos newpos;
- uint32_t newblock = ((uint64_t)seek_time * ci->id3->frequency)
- / (1000LL * fmt->samplesperblock);
+ uint32_t newblock = (seek_mode == PCM_SEEK_TIME) ?
+ ((uint64_t)seek_val * ci->id3->frequency / 1000LL)
+ / fmt->samplesperblock :
+ seek_val / fmt->blockalign;
(void)read_buffer;
newpos.pos = newblock * fmt->blockalign;
diff --git a/apps/codecs/libpcm/ieee_float.c b/apps/codecs/libpcm/ieee_float.c
index 7e3498edcb..639390bcd5 100644
--- a/apps/codecs/libpcm/ieee_float.c
+++ b/apps/codecs/libpcm/ieee_float.c
@@ -59,12 +59,14 @@ static bool set_format(struct pcm_format *format)
return true;
}
-static struct pcm_pos *get_seek_pos(long seek_time,
+static struct pcm_pos *get_seek_pos(uint32_t seek_val, int seek_mode,
uint8_t *(*read_buffer)(size_t *realsize))
{
static struct pcm_pos newpos;
- uint32_t newblock = ((uint64_t)seek_time * ci->id3->frequency)
- / (1000LL * fmt->samplesperblock);
+ uint32_t newblock = (seek_mode == PCM_SEEK_TIME) ?
+ ((uint64_t)seek_val * ci->id3->frequency / 1000LL)
+ / fmt->samplesperblock :
+ seek_val / fmt->blockalign;
(void)read_buffer;
newpos.pos = newblock * fmt->blockalign;
diff --git a/apps/codecs/libpcm/itut_g711.c b/apps/codecs/libpcm/itut_g711.c
index 097dd5cc25..88ff5f59e6 100644
--- a/apps/codecs/libpcm/itut_g711.c
+++ b/apps/codecs/libpcm/itut_g711.c
@@ -139,12 +139,14 @@ static bool set_format(struct pcm_format *format)
return true;
}
-static struct pcm_pos *get_seek_pos(long seek_time,
+static struct pcm_pos *get_seek_pos(uint32_t seek_val, int seek_mode,
uint8_t *(*read_buffer)(size_t *realsize))
{
static struct pcm_pos newpos;
- uint32_t newblock = ((uint64_t)seek_time * ci->id3->frequency)
- / (1000LL * fmt->samplesperblock);
+ uint32_t newblock = (seek_mode == PCM_SEEK_TIME) ?
+ ((uint64_t)seek_val * ci->id3->frequency / 1000LL)
+ / fmt->samplesperblock :
+ seek_val / fmt->blockalign;
(void)read_buffer;
newpos.pos = newblock * fmt->blockalign;
diff --git a/apps/codecs/libpcm/linear_pcm.c b/apps/codecs/libpcm/linear_pcm.c
index e58856efe8..5c3c140b8c 100644
--- a/apps/codecs/libpcm/linear_pcm.c
+++ b/apps/codecs/libpcm/linear_pcm.c
@@ -71,12 +71,14 @@ static bool set_format(struct pcm_format *format)
return true;
}
-static struct pcm_pos *get_seek_pos(long seek_time,
+static struct pcm_pos *get_seek_pos(uint32_t seek_val, int seek_mode,
uint8_t *(*read_buffer)(size_t *realsize))
{
static struct pcm_pos newpos;
- uint32_t newblock = ((uint64_t)seek_time * ci->id3->frequency)
- / (1000LL * fmt->samplesperblock);
+ uint32_t newblock = (seek_mode == PCM_SEEK_TIME) ?
+ ((uint64_t)seek_val * ci->id3->frequency / 1000LL)
+ / fmt->samplesperblock :
+ seek_val / fmt->blockalign;
(void)read_buffer;
newpos.pos = newblock * fmt->blockalign;
diff --git a/apps/codecs/libpcm/ms_adpcm.c b/apps/codecs/libpcm/ms_adpcm.c
index 79365807ef..a385d6c99f 100644
--- a/apps/codecs/libpcm/ms_adpcm.c
+++ b/apps/codecs/libpcm/ms_adpcm.c
@@ -60,12 +60,14 @@ static bool set_format(struct pcm_format *format)
return true;
}
-static struct pcm_pos *get_seek_pos(long seek_time,
+static struct pcm_pos *get_seek_pos(uint32_t seek_val, int seek_mode,
uint8_t *(*read_buffer)(size_t *realsize))
{
static struct pcm_pos newpos;
- uint32_t newblock = ((uint64_t)seek_time * ci->id3->frequency)
- / (1000LL * fmt->samplesperblock);
+ uint32_t newblock = (seek_mode == PCM_SEEK_TIME) ?
+ ((uint64_t)seek_val * ci->id3->frequency / 1000LL)
+ / fmt->samplesperblock :
+ seek_val / fmt->blockalign;
(void)read_buffer;
newpos.pos = newblock * fmt->blockalign;
diff --git a/apps/codecs/libpcm/pcm_common.h b/apps/codecs/libpcm/pcm_common.h
index 412ffbce0b..91c3ab7f1e 100644
--- a/apps/codecs/libpcm/pcm_common.h
+++ b/apps/codecs/libpcm/pcm_common.h
@@ -124,6 +124,9 @@ struct pcm_pos {
uint32_t samples;
};
+#define PCM_SEEK_TIME 0
+#define PCM_SEEK_POS 1
+
struct pcm_codec {
/*
* sets the format speciffic RIFF/AIFF header information and checks the pcm_format.
@@ -140,8 +143,12 @@ struct pcm_codec {
/*
* get seek position
*
- * [In] seek_time
- * seek time [ms]
+ * [In] seek_val
+ * seek time [ms] or seek position
+ *
+ * [In] seek_mode
+ * if seek_mode sets PCM_SEEK_TIME, then seek_val means the seek time.
+ * if seek_mode sets PCM_SEEK_POS, then seek_val means the seek position.
*
* [In] read_buffer
* the function which reads the data from the file (chunksize bytes read).
@@ -149,7 +156,7 @@ struct pcm_codec {
* return
* position after the seeking.
*/
- struct pcm_pos *(*get_seek_pos)(long seek_time,
+ struct pcm_pos *(*get_seek_pos)(uint32_t seek_val, int seek_mode,
uint8_t *(*read_buffer)(size_t *realsize));
/*
diff --git a/apps/codecs/libpcm/qt_ima_adpcm.c b/apps/codecs/libpcm/qt_ima_adpcm.c
index 003de22dd8..d7b3360eb3 100644
--- a/apps/codecs/libpcm/qt_ima_adpcm.c
+++ b/apps/codecs/libpcm/qt_ima_adpcm.c
@@ -57,12 +57,14 @@ static bool set_format(struct pcm_format *format)
return true;
}
-static struct pcm_pos *get_seek_pos(long seek_time,
+static struct pcm_pos *get_seek_pos(uint32_t seek_val, int seek_mode,
uint8_t *(*read_buffer)(size_t *realsize))
{
static struct pcm_pos newpos;
- uint32_t newblock = ((uint64_t)seek_time * ci->id3->frequency)
- / (1000LL * fmt->samplesperblock);
+ uint32_t newblock = (seek_mode == PCM_SEEK_TIME) ?
+ ((uint64_t)seek_val * ci->id3->frequency / 1000LL)
+ / fmt->samplesperblock :
+ seek_val / fmt->blockalign;
(void)read_buffer;
newpos.pos = newblock * fmt->blockalign;
diff --git a/apps/codecs/libpcm/swf_adpcm.c b/apps/codecs/libpcm/swf_adpcm.c
index ebc4328c59..c440fd1303 100644
--- a/apps/codecs/libpcm/swf_adpcm.c
+++ b/apps/codecs/libpcm/swf_adpcm.c
@@ -81,20 +81,21 @@ static bool set_format(struct pcm_format *format)
return true;
}
-static struct pcm_pos *get_seek_pos(long seek_time,
+static struct pcm_pos *get_seek_pos(uint32_t seek_val, int seek_mode,
uint8_t *(*read_buffer)(size_t *realsize))
{
static struct pcm_pos newpos;
- uint32_t chunkbits = blockbits;
- uint32_t seekbits = (((uint64_t)seek_time * ci->id3->frequency)
- / (1000LL * fmt->samplesperblock)) * blockbits + 2;
+ uint32_t chunkbits = blockbits;
+ uint32_t seekblocks = (seek_mode == PCM_SEEK_TIME)?
+ ((uint64_t)seek_val * ci->id3->frequency)
+ / (1000LL * fmt->samplesperblock) :
+ ((seek_val << 3) - 2) / blockbits;
+ uint32_t seekbits = seekblocks * blockbits + 2;
(void)read_buffer;
newpos.pos = seekbits >> 3;
- newpos.samples = (((uint64_t)seek_time * ci->id3->frequency)
- / (1000LL * fmt->samplesperblock))
- * fmt->samplesperblock;
+ newpos.samples = seekblocks * fmt->samplesperblock;
if (newpos.pos == 0)
{
diff --git a/apps/codecs/libpcm/yamaha_adpcm.c b/apps/codecs/libpcm/yamaha_adpcm.c
index 0b997ad776..f1fb9b68ae 100644
--- a/apps/codecs/libpcm/yamaha_adpcm.c
+++ b/apps/codecs/libpcm/yamaha_adpcm.c
@@ -214,15 +214,14 @@ static int decode_for_seek(const uint8_t *inbuf, size_t inbufsize)
return CODEC_OK;
}
-static struct pcm_pos *get_seek_pos(long seek_time,
+static struct pcm_pos *get_seek_pos(uint32_t seek_val, int seek_mode,
uint8_t *(*read_buffer)(size_t *realsize))
{
static struct pcm_pos newpos;
- uint32_t new_count= 0;
-
- if (seek_time > 0)
- new_count = ((uint64_t)seek_time * ci->id3->frequency
- / (1000LL * fmt->samplesperblock)) / blocksperchunk;
+ uint32_t new_count = (seek_mode == PCM_SEEK_TIME)?
+ ((uint64_t)seek_val * ci->id3->frequency / 1000LL)
+ / (blocksperchunk * fmt->samplesperblock) :
+ seek_val / fmt->chunksize;
if (!has_block_header)
{
diff --git a/apps/codecs/smaf.c b/apps/codecs/smaf.c
index 33a2a4b403..6763e95001 100644
--- a/apps/codecs/smaf.c
+++ b/apps/codecs/smaf.c
@@ -409,6 +409,28 @@ next_track:
ci->seek_buffer(firstblockposn);
ci->seek_complete();
+ /* make sure we're at the correct offset */
+ if (bytesdone > (uint32_t) firstblockposn)
+ {
+ /* Round down to previous block */
+ struct pcm_pos *newpos = codec->get_seek_pos(bytesdone - firstblockposn,
+ PCM_SEEK_POS, &read_buffer);
+
+ if (newpos->pos > format.numbytes)
+ goto done;
+ if (ci->seek_buffer(firstblockposn + newpos->pos))
+ {
+ bytesdone = newpos->pos;
+ decodedsamples = newpos->samples;
+ }
+ ci->seek_complete();
+ }
+ else
+ {
+ /* already where we need to be */
+ bytesdone = 0;
+ }
+
/* The main decoder loop */
endofstream = 0;
@@ -418,7 +440,8 @@ next_track:
break;
if (ci->seek_time) {
- struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, &read_buffer);
+ struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, PCM_SEEK_TIME,
+ &read_buffer);
if (newpos->pos > format.numbytes)
break;
diff --git a/apps/codecs/vox.c b/apps/codecs/vox.c
index 21742e16d9..ff5d571e8d 100644
--- a/apps/codecs/vox.c
+++ b/apps/codecs/vox.c
@@ -52,9 +52,8 @@ enum codec_status codec_main(void)
int bufcount;
int endofstream;
uint8_t *voxbuf;
- off_t firstblockposn; /* position of the first block in file */
+ off_t firstblockposn = 0; /* position of the first block in file */
const struct pcm_codec *codec;
- int offset = 0;
/* Generic codec initialisation */
ci->configure(DSP_SET_SAMPLE_DEPTH, PCM_OUTPUT_DEPTH-1);
@@ -70,7 +69,10 @@ next_track:
ci->sleep(1);
codec_set_replaygain(ci->id3);
-
+
+ /* Need to save offset for later use (cleared indirectly by advance_buffer) */
+ bytesdone = ci->id3->offset;
+
ci->memset(&format, 0, sizeof(struct pcm_format));
/* set format */
@@ -80,12 +82,9 @@ next_track:
format.blockalign = 1;
/* advance to first WAVE chunk */
- ci->advance_buffer(offset);
-
- firstblockposn = offset;
-
+ firstblockposn = 0;
decodedsamples = 0;
- bytesdone = 0;
+ ci->advance_buffer(firstblockposn);
/*
* get codec
@@ -124,6 +123,25 @@ next_track:
ci->configure(DSP_SWITCH_FREQUENCY, ci->id3->frequency);
ci->configure(DSP_SET_STEREO_MODE, STEREO_MONO);
+ /* make sure we're at the correct offset */
+ if (bytesdone > (uint32_t) firstblockposn) {
+ /* Round down to previous block */
+ struct pcm_pos *newpos = codec->get_seek_pos(bytesdone - firstblockposn,
+ PCM_SEEK_POS, &read_buffer);
+
+ if (newpos->pos > format.numbytes)
+ goto done;
+ if (ci->seek_buffer(firstblockposn + newpos->pos))
+ {
+ bytesdone = newpos->pos;
+ decodedsamples = newpos->samples;
+ }
+ ci->seek_complete();
+ } else {
+ /* already where we need to be */
+ bytesdone = 0;
+ }
+
/* The main decoder loop */
endofstream = 0;
@@ -134,7 +152,8 @@ next_track:
}
if (ci->seek_time) {
- struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, &read_buffer);
+ struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, PCM_SEEK_TIME,
+ &read_buffer);
if (newpos->pos > format.numbytes)
break;
diff --git a/apps/codecs/wav.c b/apps/codecs/wav.c
index 14d7136592..e286f4dc6a 100644
--- a/apps/codecs/wav.c
+++ b/apps/codecs/wav.c
@@ -374,10 +374,17 @@ next_track:
/* make sure we're at the correct offset */
if (bytesdone > (uint32_t) firstblockposn) {
/* Round down to previous block */
- uint32_t offset = bytesdone - bytesdone % format.blockalign;
+ struct pcm_pos *newpos = codec->get_seek_pos(bytesdone - firstblockposn,
+ PCM_SEEK_POS, &read_buffer);
- ci->advance_buffer(offset-firstblockposn);
- bytesdone = offset - firstblockposn;
+ if (newpos->pos > format.numbytes)
+ goto done;
+ if (ci->seek_buffer(firstblockposn + newpos->pos))
+ {
+ bytesdone = newpos->pos;
+ decodedsamples = newpos->samples;
+ }
+ ci->seek_complete();
} else {
/* already where we need to be */
bytesdone = 0;
@@ -393,7 +400,8 @@ next_track:
}
if (ci->seek_time) {
- struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, &read_buffer);
+ struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, PCM_SEEK_TIME,
+ &read_buffer);
if (newpos->pos > format.numbytes)
break;
diff --git a/apps/codecs/wav64.c b/apps/codecs/wav64.c
index 1913dafe5c..c06f78c802 100644
--- a/apps/codecs/wav64.c
+++ b/apps/codecs/wav64.c
@@ -380,10 +380,17 @@ next_track:
/* make sure we're at the correct offset */
if (bytesdone > (uint32_t) firstblockposn) {
/* Round down to previous block */
- uint32_t offset = bytesdone - bytesdone % format.blockalign;
+ struct pcm_pos *newpos = codec->get_seek_pos(bytesdone - firstblockposn,
+ PCM_SEEK_POS, &read_buffer);
- ci->advance_buffer(offset-firstblockposn);
- bytesdone = offset - firstblockposn;
+ if (newpos->pos > format.numbytes)
+ goto done;
+ if (ci->seek_buffer(firstblockposn + newpos->pos))
+ {
+ bytesdone = newpos->pos;
+ decodedsamples = newpos->samples;
+ }
+ ci->seek_complete();
} else {
/* already where we need to be */
bytesdone = 0;
@@ -399,7 +406,8 @@ next_track:
}
if (ci->seek_time) {
- struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, &read_buffer);
+ struct pcm_pos *newpos = codec->get_seek_pos(ci->seek_time, PCM_SEEK_TIME,
+ &read_buffer);
if (newpos->pos > format.numbytes)
break;