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liboggz
Commit 281f5330 authored by conrad's avatar conrad
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Update read position when handling buffered packets 

in oggz_read with OGGZ_AUTO
parent 44ca0662
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Showing with 75 additions and 37 deletions
src/liboggz/oggz_private.h
View file @ 281f5330
......@@ -40,6 +40,8 @@
#include <oggz/oggz_constants.h>
#include <oggz/oggz_off_t.h>
#include "oggz/oggz_packet.h"
#include "oggz_macros.h"
#include "oggz_vector.h"
#include "oggz_dlist.h"
......@@ -53,7 +55,7 @@ typedef struct _OggzReader OggzReader;
typedef struct _OggzWriter OggzWriter;
typedef int (*OggzReadPacket) (OGGZ * oggz, ogg_packet * op, long serialno,
typedef int (*OggzReadPacket) (OGGZ * oggz, oggz_packet * op, long serialno,
void * user_data);
typedef int (*OggzReadPage) (OGGZ * oggz, const ogg_page * og, long serialno,
void * user_data);
......
src/liboggz/oggz_read.c
View file @ 281f5330
......@@ -189,6 +189,10 @@ oggz_read_get_next_page (OGGZ * oggz, ogg_page * og)
int found = 0;
/* Increment oggz->offset by length of the last page processed */
#ifdef DEBUG_VERBOSE
printf ("%s: incrementing oggz->offset (0x%llx) by 0x%lx\n", __func__,
oggz->offset, reader->current_page_bytes);
#endif
oggz->offset += reader->current_page_bytes;
do {
......@@ -198,8 +202,9 @@ oggz_read_get_next_page (OGGZ * oggz, ogg_page * og)
/* No page available */
return -2;
} else if (more < 0) {
page_offset += (-more);
#ifdef DEBUG_VERBOSE
printf ("get_next_page: skipped %ld bytes\n", -more);
printf ("%s: skipping; incrementing oggz->offset by 0x%lx bytes\n", __func__, -more);
#endif
oggz->offset += (-more);
} else {
......@@ -216,7 +221,7 @@ oggz_read_get_next_page (OGGZ * oggz, ogg_page * og)
}
typedef struct {
ogg_packet packet;
oggz_packet zp;
ogg_int64_t calced_granulepos;
oggz_stream_t * stream;
OggzReader * reader;
......@@ -225,16 +230,22 @@ typedef struct {
} OggzBufferedPacket;
OggzBufferedPacket *
oggz_read_new_pbuffer_entry(OGGZ *oggz, ogg_packet *packet,
oggz_read_new_pbuffer_entry(OGGZ *oggz, oggz_packet * zp,
ogg_int64_t granulepos, long serialno, oggz_stream_t * stream,
OggzReader *reader) {
OggzReader *reader)
{
OggzBufferedPacket *p;
ogg_packet * op = &zp->op;
OggzBufferedPacket *p = oggz_malloc(sizeof(OggzBufferedPacket));
if (p == NULL) return NULL;
if ((p = oggz_malloc(sizeof(OggzBufferedPacket))) == NULL)
return NULL;
memcpy(&(p->zp), zp, sizeof(oggz_packet));
memcpy(&(p->packet), packet, sizeof(ogg_packet));
p->packet.packet = oggz_malloc(packet->bytes);
memcpy(p->packet.packet, packet->packet, packet->bytes);
if ((p->zp.op.packet = oggz_malloc(op->bytes)) == NULL) {
oggz_free (p);
return NULL;
}
memcpy(p->zp.op.packet, op->packet, op->bytes);
p->calced_granulepos = granulepos;
p->stream = stream;
......@@ -246,11 +257,10 @@ oggz_read_new_pbuffer_entry(OGGZ *oggz, ogg_packet *packet,
}
void
oggz_read_free_pbuffer_entry(OggzBufferedPacket *p) {
oggz_free(p->packet.packet);
oggz_read_free_pbuffer_entry(OggzBufferedPacket *p)
{
oggz_free(p->zp.op.packet);
oggz_free(p);
}
OggzDListIterResponse
......@@ -268,14 +278,14 @@ oggz_read_update_gp(void *elem) {
p->calced_granulepos =
oggz_auto_calculate_gp_backwards(content, p->stream->last_granulepos,
p->stream, &(p->packet), p->stream->last_packet);
p->stream, &(p->zp.op),
p->stream->last_packet);
p->stream->last_granulepos = p->calced_granulepos;
p->stream->last_packet = &(p->packet);
p->stream->last_packet = &(p->zp.op);
}
return DLIST_ITER_CONTINUE;
}
OggzDListIterResponse
......@@ -298,11 +308,11 @@ oggz_read_deliver_packet(void *elem) {
oggz_get_unit (p->oggz, p->serialno, p->calced_granulepos);
if (p->stream->read_packet) {
p->stream->read_packet(p->oggz, &(p->packet), p->serialno,
p->stream->read_user_data);
p->stream->read_packet(p->oggz, &(p->zp), p->serialno,
p->stream->read_user_data);
} else if (p->reader->read_packet) {
p->reader->read_packet(p->oggz, &(p->packet), p->serialno,
p->reader->read_user_data);
p->reader->read_packet(p->oggz, &(p->zp), p->serialno,
p->reader->read_user_data);
}
p->reader->current_granulepos = gp_stored;
......@@ -374,14 +384,16 @@ oggz_read_sync (OGGZ * oggz)
* so we silently swallow the notification and reget the packet. */
result = ogg_stream_packetout(os, op);
if (result == -1) {
/* If the result is *still* -1 then something strange is
* happening.
*/
/* If the result is *still* -1 then something strange is happening. */
#ifdef DEBUG
printf ("Multiple holes in data!");
#endif
return OGGZ_ERR_HOLE_IN_DATA;
}
/* Reset the position of the next page. */
reader->current_packet_pages = 1;
reader->current_packet_begin_page_offset = oggz->offset;
}
if(result > 0){
......@@ -427,16 +439,28 @@ oggz_read_sync (OGGZ * oggz)
oggz_auto_read_comments (oggz, stream, serialno, op);
}
/* Fill in position information. */
pos->calc_granulepos = reader->current_granulepos;
pos->begin_page_offset = reader->current_packet_begin_page_offset;
pos->end_page_offset = oggz->offset;
pos->pages = reader->current_packet_pages;
/* Handle reverse buffering */
if (oggz->flags & OGGZ_AUTO) {
/* While we are getting invalid granulepos values, store the
* incoming packets in a dlist */
if (reader->current_granulepos == -1) {
OggzBufferedPacket *p = oggz_read_new_pbuffer_entry(
oggz, &packet, reader->current_granulepos,
serialno, stream, reader);
OggzBufferedPacket *p;
p = oggz_read_new_pbuffer_entry (oggz, &packet,
reader->current_granulepos,
serialno, stream, reader);
oggz_dlist_append(oggz->packet_buffer, p);
/* Prepare the position of the next page. */
reader->current_packet_pages = 1;
reader->current_packet_begin_page_offset = oggz->offset;
continue;
} else if (!oggz_dlist_is_empty(oggz->packet_buffer)) {
/* Move backward through the list assigning gp values based upon
......@@ -445,7 +469,7 @@ oggz_read_sync (OGGZ * oggz)
* gp values.
*/
ogg_int64_t gp_stored = stream->last_granulepos;
stream->last_packet = &packet;
stream->last_packet = op;
oggz_dlist_reverse_iter(oggz->packet_buffer, oggz_read_update_gp);
oggz_dlist_deliter(oggz->packet_buffer, oggz_read_deliver_packet);
......@@ -453,21 +477,26 @@ oggz_read_sync (OGGZ * oggz)
stream->last_granulepos = gp_stored;
if (!oggz_dlist_is_empty(oggz->packet_buffer)) {
OggzBufferedPacket *p = oggz_read_new_pbuffer_entry(
oggz, &packet, reader->current_granulepos,
serialno, stream, reader);
OggzBufferedPacket *p;
p = oggz_read_new_pbuffer_entry(oggz, &packet,
reader->current_granulepos,
serialno, stream, reader);
oggz_dlist_append(oggz->packet_buffer, p);
/* Prepare the position of the next page. */
reader->current_packet_pages = 1;
reader->current_packet_begin_page_offset = oggz->offset;
continue;
}
}
}
/* Fill in position information. */
pos->calc_granulepos = reader->current_granulepos;
pos->begin_page_offset = reader->current_packet_begin_page_offset;
pos->end_page_offset = oggz->offset;
pos->pages = reader->current_packet_pages;
#ifdef DEBUG_VERBOSE
printf ("%s: set begin_page to %llx, calling read_packet\n", __func__, pos->begin_page_offset);
#endif
if (stream->read_packet) {
cb_ret =
......@@ -477,6 +506,10 @@ oggz_read_sync (OGGZ * oggz)
reader->read_packet (oggz, &packet, serialno, reader->read_user_data);
}
#ifdef DEBUG_VERBOSE
fprintf (stdout, "%s: Done packet, setting next begin_page to 0x%llx\n", __func__, oggz->offset);
#endif
/* Prepare the position of the next page. */
reader->current_packet_pages = 1;
reader->current_packet_begin_page_offset = oggz->offset;
......@@ -550,6 +583,9 @@ oggz_read_sync (OGGZ * oggz)
if (reader->current_packet_pages != -1)
reader->current_packet_pages++;
} else {
#ifdef DEBUG_VERBOSE
fprintf (stdout, "%s: New non-cont page, setting next begin_page to 0x%llx\n", __func__, oggz->offset);
#endif
/* Prepare the position of the next page */
reader->current_packet_pages = 1;
reader->current_packet_begin_page_offset = oggz->offset;
......
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