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ext/dvdread/dvdreadsrc.c: Move errors out of the normal code flow.

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Original commit message from CVS:
* ext/dvdread/dvdreadsrc.c: (gst_dvd_read_src_start),
(gst_dvd_read_src_goto_title), (gst_dvd_read_src_read),
(gst_dvd_read_src_create), (gst_dvd_read_src_goto_sector):
Move errors out of the normal code flow.
Don't send eos, basesrc will do that for us when needed.
This commit is contained in:
Wim Taymans 2006-04-21 11:17:08 +00:00
parent 502fabd67b
commit 349b97c161
2 changed files with 112 additions and 65 deletions
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8
ChangeLog
View file

@ -1,3 +1,11 @@
2006-04-21 Wim Taymans <wim@fluendo.com>
* ext/dvdread/dvdreadsrc.c: (gst_dvd_read_src_start),
(gst_dvd_read_src_goto_title), (gst_dvd_read_src_read),
(gst_dvd_read_src_create), (gst_dvd_read_src_goto_sector):
Move errors out of the normal code flow.
Don't send eos, basesrc will do that for us when needed.
2006-04-21 Wim Taymans <wim@fluendo.com>
* gst/mpegstream/gstdvddemux.c: (gst_dvd_demux_change_state):

149
ext/dvdread/dvdreadsrc.c
View file

@ -181,24 +181,14 @@ gst_dvd_read_src_start (GstBaseSrc * basesrc)
GST_DEBUG_OBJECT (src, "Opening DVD '%s'", src->location);
src->dvd = DVDOpen (src->location);
if (src->dvd == NULL) {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD")),
("DVDOpen(%s) failed: %s", src->location, g_strerror (errno)));
return FALSE;
}
if ((src->dvd = DVDOpen (src->location)) == NULL)
goto open_failed;
/* Load the video manager to find out the information about the titles */
GST_DEBUG_OBJECT (src, "Loading VMG info");
src->vmg_file = ifoOpen (src->dvd, 0);
if (!src->vmg_file) {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD")),
("ifoOpen() failed: %s", g_strerror (errno)));
return FALSE;
}
if (!(src->vmg_file = ifoOpen (src->dvd, 0)))
goto ifo_open_failed;
src->tt_srpt = src->vmg_file->tt_srpt;
@ -206,21 +196,45 @@ gst_dvd_read_src_start (GstBaseSrc * basesrc)
src->chapter = src->uri_chapter - 1;
src->angle = src->uri_angle - 1;
if (!gst_dvd_read_src_goto_title (src, src->title, src->angle)) {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD title %d"), src->uri_title), (NULL));
return FALSE;
}
if (!gst_dvd_read_src_goto_title (src, src->title, src->angle))
goto title_open_failed;
if (!gst_dvd_read_src_goto_chapter (src, src->chapter)) {
GST_ERROR_OBJECT (src, "Failed to go to chapter %d of DVD title %d",
src->uri_chapter, src->uri_title);
}
if (!gst_dvd_read_src_goto_chapter (src, src->chapter))
goto chapter_open_failed;
src->new_seek = FALSE;
src->change_cell = TRUE;
return TRUE;
/* ERRORS */
open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD")),
("DVDOpen(%s) failed: %s", src->location, g_strerror (errno)));
return FALSE;
}
ifo_open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD")),
("ifoOpen() failed: %s", g_strerror (errno)));
return FALSE;
}
title_open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD title %d"), src->uri_title), (NULL));
return FALSE;
}
chapter_open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Failed to go to chapter %d of DVD title %d"),
src->uri_chapter, src->uri_title), (NULL));
return FALSE;
}
}
static gboolean
@ -370,11 +384,8 @@ gst_dvd_read_src_goto_title (GstDvdReadSrc * src, gint title, gint angle)
/* make sure our title number is valid */
num_titles = src->tt_srpt->nr_of_srpts;
GST_INFO_OBJECT (src, "There are %d titles on this DVD", num_titles);
if (title < 0 || title >= num_titles) {
GST_WARNING_OBJECT (src, "Invalid title %d (only %d available)",
title, num_titles);
return FALSE;
}
if (title < 0 || title >= num_titles)
goto invalid_title;
src->num_chapters = src->tt_srpt->title[title].nr_of_ptts;
GST_INFO_OBJECT (src, "Title %d has %d chapters", title, src->num_chapters);
@ -391,24 +402,16 @@ gst_dvd_read_src_goto_title (GstDvdReadSrc * src, gint title, gint angle)
/* load the VTS information for the title set our title is in */
title_set_nr = src->tt_srpt->title[title].title_set_nr;
src->vts_file = ifoOpen (src->dvd, title_set_nr);
if (src->vts_file == NULL) {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD title %d"), title_set_nr),
("ifoOpen(%d) failed: %s", title_set_nr, g_strerror (errno)));
return FALSE;
}
if (src->vts_file == NULL)
goto ifo_open_failed;
src->ttn = src->tt_srpt->title[title].vts_ttn;
src->vts_ptt_srpt = src->vts_file->vts_ptt_srpt;
/* we've got enough info, time to open the title set data */
src->dvd_title = DVDOpenFile (src->dvd, title_set_nr, DVD_READ_TITLE_VOBS);
if (src->dvd_title == NULL) {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD title %d"), title_set_nr),
("Can't open title VOBS (VTS_%02d_1.VOB)", title_set_nr));
return FALSE;
}
if (src->dvd_title == NULL)
goto title_open_failed;
GST_INFO_OBJECT (src, "Opened title %d, angle %d", title, angle);
src->title = title;
@ -468,6 +471,28 @@ gst_dvd_read_src_goto_title (GstDvdReadSrc * src, gint title, gint angle)
gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, s);
return TRUE;
/* ERRORS */
invalid_title:
{
GST_WARNING_OBJECT (src, "Invalid title %d (only %d available)",
title, num_titles);
return FALSE;
}
ifo_open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD title %d"), title_set_nr),
("ifoOpen(%d) failed: %s", title_set_nr, g_strerror (errno)));
return FALSE;
}
title_open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open DVD title %d"), title_set_nr),
("Can't open title VOBS (VTS_%02d_1.VOB)", title_set_nr));
return FALSE;
}
}
/* FIXME: double-check this function, compare against original */
@ -519,10 +544,8 @@ again:
if (src->cur_cell >= src->last_cell) {
/* advance to next chapter */
if (src->chapter == (src->num_chapters - 1)) {
GST_INFO_OBJECT (src, "last chapter done - EOS");
return GST_DVD_READ_EOS;
}
if (src->chapter == (src->num_chapters - 1))
goto eos;
GST_INFO_OBJECT (src, "end of chapter %d, switch to next", src->chapter);
@ -564,10 +587,8 @@ again:
nav_retry:
len = DVDReadBlocks (src->dvd_title, src->cur_pack, 1, oneblock);
if (len == 0) {
GST_ERROR_OBJECT (src, "Read failed for block %d", src->cur_pack);
return GST_DVD_READ_ERROR;
}
if (len == 0)
goto read_error;
if (!gst_dvd_read_src_is_nav_pack (oneblock)) {
src->cur_pack++;
@ -607,12 +628,8 @@ nav_retry:
len = DVDReadBlocks (src->dvd_title, src->cur_pack, cur_output_size,
GST_BUFFER_DATA (buf));
if (len != cur_output_size) {
GST_ERROR_OBJECT (src, "Read failed for %d blocks at %d",
cur_output_size, src->cur_pack);
gst_buffer_unref (buf);
return GST_DVD_READ_ERROR;
}
if (len != cur_output_size)
goto block_read_error;
GST_BUFFER_SIZE (buf) = cur_output_size * DVD_VIDEO_LB_LEN;
/* GST_BUFFER_OFFSET (buf) = priv->cur_pack * DVD_VIDEO_LB_LEN; */
@ -624,7 +641,27 @@ nav_retry:
src->cur_pack = next_vobu;
GST_LOG_OBJECT (src, "Read %u sectors", cur_output_size);
return GST_DVD_READ_OK;
/* ERRORS */
eos:
{
GST_INFO_OBJECT (src, "last chapter done - EOS");
return GST_DVD_READ_EOS;
}
read_error:
{
GST_ERROR_OBJECT (src, "Read failed for block %d", src->cur_pack);
return GST_DVD_READ_ERROR;
}
block_read_error:
{
GST_ERROR_OBJECT (src, "Read failed for %d blocks at %d",
cur_output_size, src->cur_pack);
gst_buffer_unref (buf);
return GST_DVD_READ_ERROR;
}
}
static GstFlowReturn
@ -698,7 +735,6 @@ gst_dvd_read_src_create (GstPushSrc * pushsrc, GstBuffer ** p_buf)
}
case GST_DVD_READ_EOS:{
GST_INFO_OBJECT (src, "Reached EOS");
gst_pad_push_event (GST_BASE_SRC (src)->srcpad, gst_event_new_eos ());
return GST_FLOW_UNEXPECTED;
}
case GST_DVD_READ_OK:{
@ -1162,9 +1198,11 @@ gst_dvd_read_src_goto_sector (GstDvdReadSrc * src, int angle)
}
GST_DEBUG_OBJECT (src, "Seek to sector %u failed", seek_to);
return FALSE;
done:
{
/* so chapter $chapter and cell $cur contain our sector
* of interest. Let's go there! */
GST_INFO_OBJECT (src, "Seek succeeded, going to chapter %u, cell %u",
@ -1178,6 +1216,7 @@ done:
return TRUE;
}
}
/*** URI interface ***/