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ext/ffmpeg/: Fix up demuxer. Works now for all my files that I tried, even quicktime. I basically hack around the sup...

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Original commit message from CVS:
* ext/ffmpeg/gstffmpegdemux.c: (gst_ffmpegdemux_src_event),
(gst_ffmpegdemux_src_query), (gst_ffmpegdemux_src_convert),
(gst_ffmpegdemux_open), (gst_ffmpegdemux_loop):
* ext/ffmpeg/gstffmpegprotocol.c: (gst_ffmpegdata_open),
(gst_ffmpegdata_read), (gst_ffmpegdata_write),
(gst_ffmpegdata_seek):
Fix up demuxer. Works now for all my files that I tried, even
quicktime. I basically hack around the super-oversimplistic file
I/O handling in ffmpeg in several ways together, and I also hack
around the fairly annoying EOS-will-pause-the-source-element in
GStreamer itself.
This code is not pretty.
This commit is contained in:
Ronald S. Bultje 2004-05-14 14:11:00 +00:00
parent f9536f9af1
commit 028d9567da
3 changed files with 112 additions and 13 deletions
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15
ChangeLog
View file

@ -1,3 +1,18 @@
2004-05-14 Ronald Bultje <rbultje@ronald.bitfreak.net>
* ext/ffmpeg/gstffmpegdemux.c: (gst_ffmpegdemux_src_event),
(gst_ffmpegdemux_src_query), (gst_ffmpegdemux_src_convert),
(gst_ffmpegdemux_open), (gst_ffmpegdemux_loop):
* ext/ffmpeg/gstffmpegprotocol.c: (gst_ffmpegdata_open),
(gst_ffmpegdata_read), (gst_ffmpegdata_write),
(gst_ffmpegdata_seek):
Fix up demuxer. Works now for all my files that I tried, even
quicktime. I basically hack around the super-oversimplistic file
I/O handling in ffmpeg in several ways together, and I also hack
around the fairly annoying EOS-will-pause-the-source-element in
GStreamer itself.
This code is not pretty.
2004-05-11 Jeremy Simon <jesimon@libertysurf.fr>
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_codecid_to_caps),

30
ext/ffmpeg/gstffmpegdemux.c
View file

@ -288,7 +288,7 @@ gst_ffmpegdemux_src_event (GstPad * pad, GstEvent * event)
gint64 offset;
if (!stream)
return;
return FALSE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
@ -358,7 +358,6 @@ gst_ffmpegdemux_src_query (GstPad * pad,
GstFFMpegDemux *demux = (GstFFMpegDemux *) gst_pad_get_parent (pad);
AVStream *stream = gst_ffmpegdemux_stream_from_pad (pad);
gboolean res = TRUE;
gint n;
if (!stream || (*fmt == GST_FORMAT_DEFAULT &&
stream->codec.codec_type != CODEC_TYPE_VIDEO))
@ -407,7 +406,7 @@ gst_ffmpegdemux_src_convert (GstPad * pad,
GstFormat src_fmt,
gint64 src_value, GstFormat * dest_fmt, gint64 * dest_value)
{
GstFFMpegDemux *demux = (GstFFMpegDemux *) gst_pad_get_parent (pad);
/*GstFFMpegDemux *demux = (GstFFMpegDemux *) gst_pad_get_parent (pad);*/
AVStream *stream = gst_ffmpegdemux_stream_from_pad (pad);
gboolean res = TRUE;
@ -513,6 +512,8 @@ gst_ffmpegdemux_open (GstFFMpegDemux * demux)
location = g_strdup_printf ("gstreamer://%p", demux->sinkpad);
res = av_open_input_file (&demux->context, location,
oclass->in_plugin, 0, NULL);
if (res >= 0)
res = av_find_stream_info (demux->context);
g_free (location);
if (res < 0) {
GST_ELEMENT_ERROR (demux, LIBRARY, FAILED, (NULL),
@ -574,13 +575,34 @@ gst_ffmpegdemux_loop (GstElement * element)
/* read a package */
res = av_read_packet (demux->context, &pkt);
if (res < 0) {
#if 0
/* This doesn't work - FIXME */
if (url_feof (&demux->context->pb)) {
gst_pad_event_default (demux->sinkpad, gst_event_new (GST_EVENT_EOS));
gst_ffmpegdemux_close (demux);
gst_pad_event_default (demux->sinkpad, gst_event_new (GST_EVENT_EOS));
} else {
GST_ELEMENT_ERROR (demux, LIBRARY, FAILED, (NULL),
(gst_ffmpegdemux_averror (res)));
}
#endif
/* so, we do it the hacky way. */
GstData *data = NULL;
do {
data = gst_pad_pull (demux->sinkpad);
if (!GST_IS_EVENT (data) ||
GST_EVENT_TYPE (GST_EVENT (data)) != GST_EVENT_EOS) {
gst_data_unref (data);
data = NULL;
continue;
}
} while (!data);
gst_ffmpegdemux_close (demux);
gst_pad_event_default (demux->sinkpad, GST_EVENT (data));
return;
}

80
ext/ffmpeg/gstffmpegprotocol.c
View file

@ -81,6 +81,9 @@ gst_ffmpegdata_open (URLContext * h, const char *filename, int flags)
info->pad = pad;
h->priv_data = (void *) info;
h->is_streamed = FALSE;
h->flags = 0;
h->max_packet_size = 0;
return 0;
}
@ -104,15 +107,18 @@ gst_ffmpegdata_read (URLContext * h, unsigned char *buf, int size)
do {
/* prevent EOS */
if (gst_bytestream_tell (bs) + size > gst_bytestream_length (bs))
request = gst_bytestream_length (bs) - gst_bytestream_tell (bs);
else
if (gst_bytestream_tell (bs) + size > gst_bytestream_length (bs)) {
request = (int) (gst_bytestream_length (bs) - gst_bytestream_tell (bs));
info->eos = TRUE;
} else {
request = size;
}
if (request)
if (request > 0) {
total = gst_bytestream_peek_bytes (bs, &data, request);
else
} else {
total = 0;
}
if (total < request) {
GstEvent *event;
@ -131,6 +137,7 @@ gst_ffmpegdata_read (URLContext * h, unsigned char *buf, int size)
gst_event_unref (event);
break;
case GST_EVENT_EOS:
g_warning ("Unexpected/unwanted eos in data function");
info->eos = TRUE;
gst_event_unref (event);
break;
@ -142,7 +149,7 @@ gst_ffmpegdata_read (URLContext * h, unsigned char *buf, int size)
} while (!info->eos && total != request);
memcpy (buf, data, total);
gst_bytestream_flush (bs, total);
gst_bytestream_flush_fast (bs, total);
return total;
}
@ -164,7 +171,7 @@ gst_ffmpegdata_write (URLContext * h, unsigned char *buf, int size)
gst_pad_push (info->pad, GST_DATA (outbuf));
return 0;
return size;
}
static offset_t
@ -172,9 +179,19 @@ gst_ffmpegdata_seek (URLContext * h, offset_t pos, int whence)
{
GstSeekType seek_type = 0;
GstProtocolInfo *info;
guint64 newpos;
info = (GstProtocolInfo *) h->priv_data;
/* hack in ffmpeg to get filesize... */
if (whence == SEEK_END && pos == -1)
return gst_bytestream_length (info->bs) - 1;
/* another hack to get the current position... */
else if (whence == SEEK_CUR && pos == 0)
return gst_bytestream_tell (info->bs);
else
g_assert (pos >= 0);
switch (whence) {
case SEEK_SET:
seek_type = GST_SEEK_METHOD_SET;
@ -191,12 +208,57 @@ gst_ffmpegdata_seek (URLContext * h, offset_t pos, int whence)
}
switch (info->flags) {
case URL_RDONLY:
case URL_RDONLY: {
GstEvent *event;
guint8 *data;
guint32 remaining;
/* handle discont */
gst_bytestream_seek (info->bs, pos, seek_type);
/* prevent eos */
if (gst_bytestream_tell (info->bs) ==
gst_bytestream_length (info->bs)) {
info->eos = TRUE;
break;
}
info->eos = FALSE;
while (gst_bytestream_peek_bytes (info->bs, &data, 1) == 0) {
gst_bytestream_get_status (info->bs, &remaining, &event);
if (!event) {
g_warning ("no data, no event - panic!");
return -1;
}
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
g_warning ("unexpected/unwanted EOS event after seek");
info->eos = TRUE;
gst_event_unref (event);
break;
case GST_EVENT_DISCONTINUOUS:
gst_bytestream_flush_fast (info->bs, remaining);
gst_event_unref (event); /* we expect this */
break;
default:
gst_pad_event_default (info->pad, event);
break;
}
}
newpos = gst_bytestream_tell (info->bs);
break;
}
case URL_WRONLY:
gst_pad_push (info->pad, GST_DATA (gst_event_new_seek (seek_type, pos)));
/* this is screwy because there might be queues or scheduler-queued
* buffers... Argh! */
if (whence == SEEK_SET) {
newpos = pos;
} else {
g_warning ("Writer reposition: implement me\n");
newpos = 0;
}
break;
default:
@ -204,7 +266,7 @@ gst_ffmpegdata_seek (URLContext * h, offset_t pos, int whence)
break;
}
return 0;
return newpos;
}
static int