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gstreamer/gst/avi/gstavidemux.c
David Schleef 322baf19c8 Add buffer length checks to every typefinding function 
Original commit message from CVS:
Add buffer length checks to every typefinding function
2003-07-24 08:49:42 +00:00

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* #define GST_DEBUG_ENABLED */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstavidemux.h"
/* elementfactory information */
static GstElementDetails gst_avi_demux_details = {
"Avi demuxer",
"Codec/Demuxer",
"LGPL",
"Demultiplex an avi file into audio and video",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>\n"
"Wim Taymans <wim.taymans@chello.be>",
"(C) 1999",
};
static GstCaps* avi_type_find (GstBuffer *buf, gpointer private);
/* typefactory for 'avi' */
static GstTypeDefinition avidefinition = {
"avidemux_video/avi",
"video/avi",
".avi",
avi_type_find,
};
/* AviDemux signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_BITRATE,
ARG_METADATA,
ARG_STREAMINFO,
/* FILL ME */
};
GST_PAD_TEMPLATE_FACTORY (sink_templ,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"avidemux_sink",
"video/avi",
NULL
)
);
static void gst_avi_demux_class_init (GstAviDemuxClass *klass);
static void gst_avi_demux_init (GstAviDemux *avi_demux);
static void gst_avi_demux_loop (GstElement *element);
static gboolean gst_avi_demux_send_event (GstElement *element,
GstEvent *event);
static const GstEventMask *
gst_avi_demux_get_event_mask (GstPad *pad);
static gboolean gst_avi_demux_handle_src_event (GstPad *pad,
GstEvent *event);
static const GstFormat *
gst_avi_demux_get_src_formats (GstPad *pad);
static const GstQueryType *
gst_avi_demux_get_src_query_types (GstPad *pad);
static gboolean gst_avi_demux_handle_src_query (GstPad *pad,
GstQueryType type,
GstFormat *format,
gint64 *value);
static gboolean gst_avi_demux_src_convert (GstPad *pad,
GstFormat src_format,
gint64 src_value,
GstFormat *dest_format,
gint64 *dest_value);
static GstElementStateReturn
gst_avi_demux_change_state (GstElement *element);
static void gst_avi_demux_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static GstPadTemplate *videosrctempl, *audiosrctempl;
static GstElementClass *parent_class = NULL;
/*static guint gst_avi_demux_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_avi_demux_get_type(void)
{
static GType avi_demux_type = 0;
if (!avi_demux_type) {
static const GTypeInfo avi_demux_info = {
sizeof(GstAviDemuxClass),
NULL,
NULL,
(GClassInitFunc)gst_avi_demux_class_init,
NULL,
NULL,
sizeof(GstAviDemux),
0,
(GInstanceInitFunc)gst_avi_demux_init,
};
avi_demux_type = g_type_register_static(GST_TYPE_ELEMENT, "GstAviDemux", &avi_demux_info, 0);
}
return avi_demux_type;
}
static void
gst_avi_demux_class_init (GstAviDemuxClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
g_object_class_install_property (G_OBJECT_CLASS(klass), ARG_BITRATE,
g_param_spec_long ("bitrate","bitrate","bitrate",
G_MINLONG, G_MAXLONG, 0, G_PARAM_READABLE)); /* CHECKME */
g_object_class_install_property (gobject_class, ARG_METADATA,
g_param_spec_boxed ("metadata", "Metadata", "Metadata",
GST_TYPE_CAPS, G_PARAM_READABLE));
g_object_class_install_property (gobject_class, ARG_STREAMINFO,
g_param_spec_boxed ("streaminfo", "Streaminfo", "Streaminfo",
GST_TYPE_CAPS, G_PARAM_READABLE));
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->get_property = gst_avi_demux_get_property;
gstelement_class->change_state = gst_avi_demux_change_state;
gstelement_class->send_event = gst_avi_demux_send_event;
}
static void
gst_avi_demux_init (GstAviDemux *avi_demux)
{
GST_FLAG_SET (avi_demux, GST_ELEMENT_EVENT_AWARE);
avi_demux->sinkpad = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (sink_templ), "sink");
gst_element_add_pad (GST_ELEMENT (avi_demux), avi_demux->sinkpad);
gst_element_set_loop_function (GST_ELEMENT (avi_demux), gst_avi_demux_loop);
}
static GstCaps*
avi_type_find (GstBuffer *buf,
gpointer private)
{
gchar *data = GST_BUFFER_DATA (buf);
GstCaps *new;
GST_DEBUG ("avi_demux: typefind");
if (GST_BUFFER_SIZE (buf) < 12)
return NULL;
if (GUINT32_FROM_LE (((guint32 *)data)[0]) != GST_RIFF_TAG_RIFF)
return NULL;
if (GUINT32_FROM_LE (((guint32 *)data)[2]) != GST_RIFF_RIFF_AVI)
return NULL;
new = GST_CAPS_NEW ("avi_type_find",
"video/avi",
NULL);
return new;
}
static gboolean
gst_avi_demux_avih (GstAviDemux *avi_demux)
{
gst_riff_avih *avih;
guint8 *avihdata;
GstByteStream *bs = avi_demux->bs;
guint32 got_bytes;
got_bytes = gst_bytestream_peek_bytes (bs, &avihdata, sizeof (gst_riff_avih));
avih = (gst_riff_avih *) avihdata;
if (got_bytes == sizeof (gst_riff_avih)) {
avi_demux->avih.us_frame = GUINT32_FROM_LE (avih->us_frame);
avi_demux->avih.max_bps = GUINT32_FROM_LE (avih->max_bps);
avi_demux->avih.pad_gran = GUINT32_FROM_LE (avih->pad_gran);
avi_demux->avih.flags = GUINT32_FROM_LE (avih->flags);
avi_demux->avih.tot_frames = GUINT32_FROM_LE (avih->tot_frames);
avi_demux->avih.init_frames = GUINT32_FROM_LE (avih->init_frames);
avi_demux->avih.streams = GUINT32_FROM_LE (avih->streams);
avi_demux->avih.bufsize = GUINT32_FROM_LE (avih->bufsize);
avi_demux->avih.width = GUINT32_FROM_LE (avih->width);
avi_demux->avih.height = GUINT32_FROM_LE (avih->height);
avi_demux->avih.scale = GUINT32_FROM_LE (avih->scale);
avi_demux->avih.rate = GUINT32_FROM_LE (avih->rate);
avi_demux->avih.start = GUINT32_FROM_LE (avih->start);
avi_demux->avih.length = GUINT32_FROM_LE (avih->length);
GST_INFO ( "gst_avi_demux: avih tag found");
GST_INFO ( "gst_avi_demux: us_frame %d", avi_demux->avih.us_frame);
GST_INFO ( "gst_avi_demux: max_bps %d", avi_demux->avih.max_bps);
GST_INFO ( "gst_avi_demux: pad_gran %d", avi_demux->avih.pad_gran);
GST_INFO ( "gst_avi_demux: flags 0x%08x", avi_demux->avih.flags);
GST_INFO ( "gst_avi_demux: tot_frames %d", avi_demux->avih.tot_frames);
GST_INFO ( "gst_avi_demux: init_frames %d", avi_demux->avih.init_frames);
GST_INFO ( "gst_avi_demux: streams %d", avi_demux->avih.streams);
GST_INFO ( "gst_avi_demux: bufsize %d", avi_demux->avih.bufsize);
GST_INFO ( "gst_avi_demux: width %d", avi_demux->avih.width);
GST_INFO ( "gst_avi_demux: height %d", avi_demux->avih.height);
GST_INFO ( "gst_avi_demux: scale %d", avi_demux->avih.scale);
GST_INFO ( "gst_avi_demux: rate %d", avi_demux->avih.rate);
GST_INFO ( "gst_avi_demux: start %d", avi_demux->avih.start);
GST_INFO ( "gst_avi_demux: length %d", avi_demux->avih.length);
return TRUE;
}
return FALSE;
}
static gboolean
gst_avi_demux_strh (GstAviDemux *avi_demux)
{
gst_riff_strh *strh;
guint8 *strhdata;
GstByteStream *bs = avi_demux->bs;
guint32 got_bytes;
got_bytes = gst_bytestream_peek_bytes (bs, &strhdata, sizeof (gst_riff_strh));
strh = (gst_riff_strh *) strhdata;
if (got_bytes == sizeof (gst_riff_strh)) {
avi_stream_context *target;
avi_demux->fcc_type = GUINT32_FROM_LE (strh->type);
target = &avi_demux->stream[avi_demux->num_streams];
target->num = avi_demux->num_streams;
target->strh.type = avi_demux->fcc_type;
target->strh.fcc_handler = GUINT32_FROM_LE (strh->fcc_handler);
target->strh.flags = GUINT32_FROM_LE (strh->flags);
target->strh.priority = GUINT32_FROM_LE (strh->priority);
target->strh.init_frames = GUINT32_FROM_LE (strh->init_frames);
target->strh.scale = GUINT32_FROM_LE (strh->scale);
target->strh.rate = GUINT32_FROM_LE (strh->rate);
target->strh.start = GUINT32_FROM_LE (strh->start);
target->strh.length = GUINT32_FROM_LE (strh->length);
target->strh.bufsize = GUINT32_FROM_LE (strh->bufsize);
target->strh.quality = GUINT32_FROM_LE (strh->quality);
target->strh.samplesize = GUINT32_FROM_LE (strh->samplesize);
if (!target->strh.scale)
target->strh.scale = 1; /* avoid division by zero */
if (!target->strh.rate)
target->strh.rate = 1; /* avoid division by zero */
GST_INFO ( "gst_avi_demux: strh tag found");
GST_INFO ( "gst_avi_demux: type 0x%08x (%s)",
target->strh.type, gst_riff_id_to_fourcc (strh->type));
GST_INFO ( "gst_avi_demux: fcc_handler 0x%08x (%s)",
target->strh.fcc_handler, gst_riff_id_to_fourcc (strh->fcc_handler));
GST_INFO ( "gst_avi_demux: flags 0x%08x", strh->flags);
GST_INFO ( "gst_avi_demux: priority %d", target->strh.priority);
GST_INFO ( "gst_avi_demux: init_frames %d", target->strh.init_frames);
GST_INFO ( "gst_avi_demux: scale %d", target->strh.scale);
GST_INFO ( "gst_avi_demux: rate %d", target->strh.rate);
GST_INFO ( "gst_avi_demux: start %d", target->strh.start);
GST_INFO ( "gst_avi_demux: length %d", target->strh.length);
GST_INFO ( "gst_avi_demux: bufsize %d", target->strh.bufsize);
GST_INFO ( "gst_avi_demux: quality %d", target->strh.quality);
GST_INFO ( "gst_avi_demux: samplesize %d", target->strh.samplesize);
target->delay = 0LL;
target->total_bytes = 0LL;
target->total_frames = 0;
target->end_pos = -1;
target->current_frame = 0;
target->current_byte = 0;
target->need_flush = FALSE;
target->skip = 0;
avi_demux->avih.bufsize = MAX (avi_demux->avih.bufsize, target->strh.bufsize);
return TRUE;
}
return FALSE;
}
static void
gst_avi_demux_dmlh (GstAviDemux *avi_demux)
{
gst_riff_dmlh *dmlh;
guint8 *dmlhdata;
GstByteStream *bs = avi_demux->bs;
guint32 got_bytes;
got_bytes = gst_bytestream_peek_bytes (bs, &dmlhdata, sizeof (gst_riff_dmlh));
dmlh = (gst_riff_dmlh *) dmlhdata;
}
static void
gst_avi_demux_strn (GstAviDemux *avi_demux, gint len)
{
gchar *name;
guint8 *namedata;
GstByteStream *bs = avi_demux->bs;
guint32 got_bytes;
got_bytes = gst_bytestream_peek_bytes (bs, &namedata, len);
name = (gchar *) namedata;
if (got_bytes != len)
return;
GST_DEBUG ("Stream name: \"%s\"", name);
}
static void
gst_avi_demux_metadata (GstAviDemux *avi_demux, gint len)
{
guint32 got_bytes;
GstByteStream *bs = avi_demux->bs;
gst_riff_chunk *temp_chunk, chunk;
guint8 *tempdata;
gchar *name, *type;
GstProps *props;
GstPropsEntry *entry;
props = gst_props_empty_new ();
while (len > 0) {
got_bytes = gst_bytestream_peek_bytes (bs, &tempdata, sizeof (gst_riff_chunk));
temp_chunk = (gst_riff_chunk *) tempdata;
/* fixup for our big endian friends */
chunk.id = GUINT32_FROM_LE (temp_chunk->id);
chunk.size = GUINT32_FROM_LE (temp_chunk->size);
gst_bytestream_flush (bs, sizeof (gst_riff_chunk));
if (got_bytes != sizeof (gst_riff_chunk))
return;
len -= sizeof (gst_riff_chunk);
/* don't care about empty entries - move on */
if (chunk.size == 0)
continue;
got_bytes = gst_bytestream_peek_bytes (bs, &tempdata, chunk.size);
name = (gchar *) tempdata;
gst_bytestream_flush (bs, (chunk.size + 1) & ~1);
if (got_bytes != chunk.size)
return;
len -= ((chunk.size + 1) & ~1);
/* we now have an info string in 'name' of type 'chunk.id' - find 'type' */
switch (chunk.id) {
case GST_RIFF_INFO_IARL:
type = "Location";
break;
case GST_RIFF_INFO_IART:
type = "Artist";
break;
case GST_RIFF_INFO_ICMS:
type = "Commissioner";
break;
case GST_RIFF_INFO_ICMT:
type = "Comment";
break;
case GST_RIFF_INFO_ICOP:
type = "Copyright";
break;
case GST_RIFF_INFO_ICRD:
type = "Creation Date";
break;
case GST_RIFF_INFO_ICRP:
type = "Cropped";
break;
case GST_RIFF_INFO_IDIM:
type = "Dimensions";
break;
case GST_RIFF_INFO_IDPI:
type = "Dots per Inch";
break;
case GST_RIFF_INFO_IENG:
type = "Engineer";
break;
case GST_RIFF_INFO_IGNR:
type = "Genre";
break;
case GST_RIFF_INFO_IKEY:
type = "Keywords";
break;
case GST_RIFF_INFO_ILGT:
type = "Lightness";
break;
case GST_RIFF_INFO_IMED:
type = "Medium";
break;
case GST_RIFF_INFO_INAM:
type = "Title"; /* "Name" */
break;
case GST_RIFF_INFO_IPLT:
type = "Palette";
break;
case GST_RIFF_INFO_IPRD:
type = "Product";
break;
case GST_RIFF_INFO_ISBJ:
type = "Subject";
break;
case GST_RIFF_INFO_ISFT:
type = "Encoder"; /* "Software" */
break;
case GST_RIFF_INFO_ISHP:
type = "Sharpness";
break;
case GST_RIFF_INFO_ISRC:
type = "Source";
break;
case GST_RIFF_INFO_ISRF:
type = "Source Form";
break;
case GST_RIFF_INFO_ITCH:
type = "Technician";
break;
default:
type = NULL;
break;
}
if (type) {
/* create props entry */
entry = gst_props_entry_new (type, GST_PROPS_STRING (name));
gst_props_add_entry (props, entry);
}
}
gst_props_debug(props);
gst_caps_replace_sink (&avi_demux->metadata,
gst_caps_new("avi_metadata",
"application/x-gst-metadata",
props));
g_object_notify(G_OBJECT(avi_demux), "metadata");
}
static void
gst_avi_demux_streaminfo (GstAviDemux *avi_demux)
{
GstProps *props;
props = gst_props_empty_new ();
/* compression formats are added later - a bit hacky */
gst_caps_replace_sink (&avi_demux->streaminfo,
gst_caps_new("avi_streaminfo",
"application/x-gst-streaminfo",
props));
/*g_object_notify(G_OBJECT(avi_demux), "streaminfo");*/
}
/* video/audio pad/caps stuff */
#ifdef G_HAVE_ISO_VARARGS
#define GST_AVI_VID_CAPS_NEW(name, mimetype, ...) \
(strf != NULL) ? \
GST_CAPS_NEW (name, \
mimetype, \
"width", GST_PROPS_INT (width), \
"height", GST_PROPS_INT (height), \
"framerate", GST_PROPS_FLOAT (framerate), \
__VA_ARGS__) \
: \
GST_CAPS_NEW (name, \
mimetype, \
"width", GST_PROPS_INT_RANGE (16, 4096), \
"height", GST_PROPS_INT_RANGE (16, 4096), \
"framerate", GST_PROPS_FLOAT_RANGE (0., G_MAXFLOAT), \
__VA_ARGS__)
#elif defined(G_HAVE_GNUC_VARARGS)
#define GST_AVI_VID_CAPS_NEW(name, mimetype, props...) \
(strf != NULL) ? \
GST_CAPS_NEW (name, \
mimetype, \
"width", GST_PROPS_INT (width), \
"height", GST_PROPS_INT (height), \
"framerate", GST_PROPS_FLOAT (framerate), \
##props) \
: \
GST_CAPS_NEW (name, \
mimetype, \
"width", GST_PROPS_INT_RANGE (16, 4096), \
"height", GST_PROPS_INT_RANGE (16, 4096), \
"framerate", GST_PROPS_FLOAT_RANGE (0., G_MAXFLOAT), \
##props)
#endif
static GstCaps *
gst_avi_demux_video_caps (guint32 codec_fcc,
gst_riff_strh *strh,
gst_riff_strf_vids *strf,
GstAviDemux *avi_demux)
{
GstCaps *caps = NULL;
gchar *codecname = NULL;
gint width = -1, height = -1;
gdouble framerate = 0.;
if (strf != NULL) {
width = GUINT32_FROM_LE (strf->width);
height = GUINT32_FROM_LE (strf->height);
}
if (strh != NULL) {
framerate = 1. * GUINT32_FROM_LE (strh->rate) /
GUINT32_FROM_LE (strh->scale); /* fps */
}
switch (codec_fcc) {
case GST_MAKE_FOURCC('I','4','2','0'):
case GST_MAKE_FOURCC('Y','U','Y','2'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src_raw",
"video/x-raw-yuv",
"format", GST_PROPS_FOURCC (codec_fcc)
);
codecname = g_strdup_printf("Raw Video (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('M','J','P','G'): /* YUY2 MJPEG */
case GST_MAKE_FOURCC('J','P','E','G'): /* generic (mostly RGB) MJPEG */
case GST_MAKE_FOURCC('P','I','X','L'): /* Miro/Pinnacle fourccs */
case GST_MAKE_FOURCC('V','I','X','L'): /* Miro/Pinnacle fourccs */
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src_jpeg",
"video/x-jpeg",
NULL
);
codecname = g_strdup_printf("Motion-JPEG (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('H','F','Y','U'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src_hfyu",
"video/x-huffyuv",
NULL
);
codecname = g_strdup_printf("HuffYUV (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('M','P','E','G'):
case GST_MAKE_FOURCC('M','P','G','I'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src_mpeg",
"video/mpeg",
"systemstream", GST_PROPS_BOOLEAN (FALSE),
"mpegversion", GST_PROPS_BOOLEAN (1)
);
codecname = g_strdup_printf("MPEG-1 (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('H','2','6','3'):
case GST_MAKE_FOURCC('i','2','6','3'):
case GST_MAKE_FOURCC('L','2','6','3'):
case GST_MAKE_FOURCC('M','2','6','3'):
case GST_MAKE_FOURCC('V','D','O','W'):
case GST_MAKE_FOURCC('V','I','V','O'):
case GST_MAKE_FOURCC('x','2','6','3'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src_263",
"video/x-h263",
NULL
);
codecname = g_strdup_printf("H263-compatible (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('D','I','V','3'):
case GST_MAKE_FOURCC('D','I','V','4'):
case GST_MAKE_FOURCC('D','I','V','5'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src_divx3",
"video/x-divx",
"divxversion", GST_PROPS_INT(3)
);
codecname = g_strdup_printf("DivX-3.x (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('d','i','v','x'):
case GST_MAKE_FOURCC('D','I','V','X'):
case GST_MAKE_FOURCC('D','X','5','0'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src_divx5",
"video/x-divx",
"divxversion", GST_PROPS_INT(5)
);
codecname = g_strdup_printf("DivX 4.x/5.x (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('X','V','I','D'):
case GST_MAKE_FOURCC('x','v','i','d'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src",
"video/x-xvid",
NULL
);
codecname = g_strdup_printf("XviD (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('M','P','G','4'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src",
"video/x-msmpeg",
"msmpegversion", GST_PROPS_INT (41)
);
codecname = g_strdup_printf("MS MPEG-4.1 (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('M','P','4','2'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src",
"video/x-msmpeg",
"msmpegversion", GST_PROPS_INT (42)
);
codecname = g_strdup_printf("MS MPEG-4.2 (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('M','P','4','3'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src",
"video/x-msmpeg",
"msmpegversion", GST_PROPS_INT (43)
);
codecname = g_strdup_printf("MS MPEG-4.3 (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('3','I','V','1'):
case GST_MAKE_FOURCC('3','I','V','2'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src_3ivx",
"video/x-3ivx",
NULL
);
codecname = g_strdup_printf("3ivX (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('D','V','S','D'):
case GST_MAKE_FOURCC('d','v','s','d'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src",
"video/x-dv",
"systemstream", GST_PROPS_BOOLEAN (FALSE)
);
codecname = g_strdup_printf("Digital Video (" GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('W','M','V','1'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src_wmv1",
"video/x-wmv",
"wmvversion", GST_PROPS_INT (1)
);
codecname = g_strdup_printf("Windows Media Format 1 ("
GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
case GST_MAKE_FOURCC('W','M','V','2'):
caps = GST_AVI_VID_CAPS_NEW (
"avidemux_video_src_wmv2",
"video/x-wmv",
"wmvversion", GST_PROPS_INT (2)
);
codecname = g_strdup_printf("Windows Media Format 2 ("
GST_FOURCC_FORMAT ")",
GST_FOURCC_ARGS(codec_fcc));
break;
default:
g_warning ("avidemux: unkown video format " GST_FOURCC_FORMAT,
GST_FOURCC_ARGS(codec_fcc));
break;
}
/* set video codec info on streaminfo caps */
if (strf != NULL && codecname != NULL) {
GstPropsEntry *entry;
entry = gst_props_entry_new("videocodec",
GST_PROPS_STRING(codecname));
gst_props_add_entry(avi_demux->streaminfo->properties, entry);
}
if (codecname != NULL) {
g_free(codecname);
}
return caps;
}
static void
gst_avi_demux_strf_vids (GstAviDemux *avi_demux)
{
gst_riff_strf_vids *strf;
gst_riff_strh *strh;
guint8 *strfdata;
GstPad *srcpad;
GstCaps *caps = NULL;
avi_stream_context *stream;
GstByteStream *bs = avi_demux->bs;
guint32 got_bytes;
gchar *padname;
got_bytes = gst_bytestream_peek_bytes (bs, &strfdata, sizeof (gst_riff_strf_vids));
strf = (gst_riff_strf_vids *) strfdata;
if (got_bytes != sizeof (gst_riff_strf_vids))
return;
padname = g_strdup_printf ("video_%02d", avi_demux->num_v_streams);
srcpad = gst_pad_new_from_template (videosrctempl, padname);
g_free (padname);
/* let's try some gstreamer-like mime-type caps */
strh = &avi_demux->stream[avi_demux->num_streams].strh;
caps = gst_avi_demux_video_caps (GUINT32_FROM_LE(strf->compression),
strh, strf, avi_demux);
if (caps != NULL) {
gst_pad_try_set_caps (srcpad, caps);
}
gst_pad_set_formats_function (srcpad, gst_avi_demux_get_src_formats);
gst_pad_set_event_mask_function (srcpad, gst_avi_demux_get_event_mask);
gst_pad_set_event_function (srcpad, gst_avi_demux_handle_src_event);
gst_pad_set_query_type_function (srcpad, gst_avi_demux_get_src_query_types);
gst_pad_set_query_function (srcpad, gst_avi_demux_handle_src_query);
gst_pad_set_convert_function (srcpad, gst_avi_demux_src_convert);
stream = &avi_demux->stream[avi_demux->num_streams];
stream->pad = srcpad;
gst_pad_set_element_private (srcpad, stream);
avi_demux->num_streams++;
avi_demux->num_v_streams++;
gst_element_add_pad (GST_ELEMENT (avi_demux), srcpad);
}
#ifdef G_HAVE_ISO_VARARGS
#define GST_AVI_AUD_CAPS_NEW(name, mimetype, ...) \
(strf != NULL) ? \
GST_CAPS_NEW (name, \
mimetype, \
"rate", GST_PROPS_INT (rate), \
"channels", GST_PROPS_INT (channels), \
__VA_ARGS__) \
: \
GST_CAPS_NEW (name, \
mimetype, \
"rate", GST_PROPS_INT_RANGE (8000, 96000), \
"channels", GST_PROPS_INT_RANGE (1, 2), \
__VA_ARGS__)
#elif defined(G_HAVE_GNUC_VARARGS)
#define GST_AVI_AUD_CAPS_NEW(name, mimetype, props...) \
(strf != NULL) ? \
GST_CAPS_NEW (name, \
mimetype, \
"rate", GST_PROPS_INT (rate), \
"channels", GST_PROPS_INT (channels), \
##props) \
: \
GST_CAPS_NEW (name, \
mimetype, \
"rate", GST_PROPS_INT_RANGE (8000, 96000), \
"channels", GST_PROPS_INT_RANGE (1, 2), \
##props)
#endif
static GstCaps *
gst_avi_demux_audio_caps (guint16 codec_id,
gst_riff_strf_auds *strf,
GstAviDemux *avi_demux)
{
GstCaps *caps = NULL;
gchar *codecname = NULL;
gint rate = -1, channels = -1;
if (strf != NULL) {
rate = GUINT32_FROM_LE (strf->rate);
channels = GUINT16_FROM_LE (strf->channels);
}
switch (codec_id) {
case GST_RIFF_WAVE_FORMAT_MPEGL3: /* mp3 */
caps = GST_AVI_AUD_CAPS_NEW ("avi_demux_audio_src_mp3",
"audio/mpeg",
"layer", GST_PROPS_INT (3));
codecname = g_strdup_printf("MPEG-1 layer 3 audio (0x%04x)",
codec_id);
break;
case GST_RIFF_WAVE_FORMAT_MPEGL12: /* mp1 or mp2 */
caps = GST_AVI_AUD_CAPS_NEW ("avi_demux_audio_src_mp12",
"audio/mpeg",
"layer", GST_PROPS_INT (2));
codecname = g_strdup_printf("MPEG-1 layer 1/2 audio (0x%04x)",
codec_id);
break;
case GST_RIFF_WAVE_FORMAT_PCM: /* PCM/wav */ {
GstPropsEntry *width = NULL, *depth = NULL, *signedness = NULL;
if (strf != NULL) {
gint ba = GUINT16_FROM_LE (strf->blockalign);
gint ch = GUINT16_FROM_LE (strf->channels);
gint ws = GUINT16_FROM_LE (strf->size);
width = gst_props_entry_new ("width",
GST_PROPS_INT (ba * 8 / ch));
depth = gst_props_entry_new ("depth",
GST_PROPS_INT (ws));
signedness = gst_props_entry_new ("signed",
GST_PROPS_BOOLEAN (ws != 8));
} else {
signedness = gst_props_entry_new ("signed",
GST_PROPS_LIST (
GST_PROPS_BOOLEAN (TRUE),
GST_PROPS_BOOLEAN (FALSE)));
width = gst_props_entry_new ("width",
GST_PROPS_LIST (
GST_PROPS_INT (8),
GST_PROPS_INT (16)));
depth = gst_props_entry_new ("depth",
GST_PROPS_LIST (
GST_PROPS_INT (8),
GST_PROPS_INT (16)));
}
caps = GST_AVI_AUD_CAPS_NEW ("avi_demux_audio_src_pcm",
"audio/x-raw-int",
"endianness",
GST_PROPS_INT (G_LITTLE_ENDIAN));
gst_props_add_entry (caps->properties, width);
gst_props_add_entry (caps->properties, depth);
gst_props_add_entry (caps->properties, signedness);
codecname = g_strdup_printf("Raw PCM/WAV (0x%04x)",
codec_id);
}
break;
case GST_RIFF_WAVE_FORMAT_MULAW:
if (strf != NULL && strf->size != 8) {
g_warning ("invalid depth (%d) of mulaw audio, overwriting.",
strf->size);
}
caps = GST_AVI_AUD_CAPS_NEW ("avidemux_audio_src",
"audio/x-mulaw",
NULL);
codecname = g_strdup_printf("A-law encoded (0x%04x)",
codec_id);
break;
case GST_RIFF_WAVE_FORMAT_ALAW:
if (strf != NULL && strf->size != 8) {
g_warning ("invalid depth (%d) of alaw audio, overwriting.",
strf->size);
}
caps = GST_AVI_AUD_CAPS_NEW ("avidemux_audio_src",
"audio/x-alaw",
NULL);
codecname = g_strdup_printf("A-law encoded (0x%04x)",
codec_id);
break;
case GST_RIFF_WAVE_FORMAT_VORBIS1: /* ogg/vorbis mode 1 */
case GST_RIFF_WAVE_FORMAT_VORBIS2: /* ogg/vorbis mode 2 */
case GST_RIFF_WAVE_FORMAT_VORBIS3: /* ogg/vorbis mode 3 */
case GST_RIFF_WAVE_FORMAT_VORBIS1PLUS: /* ogg/vorbis mode 1+ */
case GST_RIFF_WAVE_FORMAT_VORBIS2PLUS: /* ogg/vorbis mode 2+ */
case GST_RIFF_WAVE_FORMAT_VORBIS3PLUS: /* ogg/vorbis mode 3+ */
caps = GST_AVI_AUD_CAPS_NEW ("asf_demux_audio_src_vorbis",
"audio/x-vorbis",
NULL);
codecname = g_strdup_printf("Vorbis (0x%04x)",
codec_id);
break;
case GST_RIFF_WAVE_FORMAT_A52:
caps = GST_AVI_AUD_CAPS_NEW ("asf_demux_audio_src_ac3",
"audio/x-ac3",
NULL);
codecname = g_strdup_printf("AC-3 (0x%04x)",
codec_id);
break;
default:
g_warning ("avidemux: unkown audio format 0x%04x",
codec_id);
break;
}
if (strf != NULL && codecname != NULL) {
/* set audio codec in streaminfo */
GstPropsEntry *entry;
entry = gst_props_entry_new("audiocodec",
GST_PROPS_STRING(codecname));
gst_props_add_entry(avi_demux->streaminfo->properties, entry);
}
if (codecname != NULL) {
g_free (codecname);
}
return caps;
}
static void
gst_avi_demux_strf_auds (GstAviDemux *avi_demux)
{
gst_riff_strf_auds *strf;
guint8 *strfdata;
GstPad *srcpad;
GstCaps *caps = NULL;
avi_stream_context *stream;
GstByteStream *bs = avi_demux->bs;
guint32 got_bytes;
gchar *padname;
got_bytes = gst_bytestream_peek_bytes (bs, &strfdata, sizeof (gst_riff_strf_auds));
strf = (gst_riff_strf_auds *) strfdata;
if (got_bytes != sizeof (gst_riff_strf_auds))
return;
GST_INFO ( "gst_avi_demux: strf tag found in context auds");
GST_INFO ( "gst_avi_demux: format %d", GUINT16_FROM_LE (strf->format));
GST_INFO ( "gst_avi_demux: channels %d", GUINT16_FROM_LE (strf->channels));
GST_INFO ( "gst_avi_demux: rate %d", GUINT32_FROM_LE (strf->rate));
GST_INFO ( "gst_avi_demux: av_bps %d", GUINT32_FROM_LE (strf->av_bps));
GST_INFO ( "gst_avi_demux: blockalign %d", GUINT16_FROM_LE (strf->blockalign));
GST_INFO ( "gst_avi_demux: size %d", GUINT16_FROM_LE (strf->size));
padname = g_strdup_printf ("audio_%02d",
avi_demux->num_a_streams);
srcpad = gst_pad_new_from_template (audiosrctempl, padname);
g_free (padname);
caps = gst_avi_demux_audio_caps (GUINT16_FROM_LE (strf->format),
strf, avi_demux);
if (caps != NULL) {
gst_pad_try_set_caps(srcpad, caps);
}
gst_pad_set_formats_function (srcpad, gst_avi_demux_get_src_formats);
gst_pad_set_event_mask_function (srcpad, gst_avi_demux_get_event_mask);
gst_pad_set_event_function (srcpad, gst_avi_demux_handle_src_event);
gst_pad_set_query_type_function (srcpad, gst_avi_demux_get_src_query_types);
gst_pad_set_query_function (srcpad, gst_avi_demux_handle_src_query);
gst_pad_set_convert_function (srcpad, gst_avi_demux_src_convert);
stream = &avi_demux->stream[avi_demux->num_streams];
stream->pad = srcpad;
gst_pad_set_element_private (srcpad, stream);
avi_demux->num_streams++;
avi_demux->num_a_streams++;
gst_element_add_pad (GST_ELEMENT (avi_demux), srcpad);
}
static GstCaps *
gst_avi_demux_iavs_caps (void)
{
return GST_CAPS_NEW ("avi_type_dv",
"video/x-dv",
"systemstream", GST_PROPS_BOOLEAN (TRUE));
}
static void
gst_avi_demux_strf_iavs (GstAviDemux *avi_demux)
{
gst_riff_strf_iavs *strf;
guint8 *strfdata;
GstPad *srcpad;
GstCaps *caps = NULL;
avi_stream_context *stream;
GstByteStream *bs = avi_demux->bs;
guint32 got_bytes;
gchar *padname;
got_bytes = gst_bytestream_peek_bytes (bs, &strfdata, sizeof (gst_riff_strf_iavs));
strf = (gst_riff_strf_iavs *) strfdata;
if (got_bytes != sizeof (gst_riff_strf_iavs))
return;
GST_INFO ( "gst_avi_demux: strf tag found in context iavs");
GST_INFO ( "gst_avi_demux: DVAAuxSrc %08x", GUINT32_FROM_LE (strf->DVAAuxSrc));
GST_INFO ( "gst_avi_demux: DVAAuxCtl %08x", GUINT32_FROM_LE (strf->DVAAuxCtl));
GST_INFO ( "gst_avi_demux: DVAAuxSrc1 %08x", GUINT32_FROM_LE (strf->DVAAuxSrc1));
GST_INFO ( "gst_avi_demux: DVAAuxCtl1 %08x", GUINT32_FROM_LE (strf->DVAAuxCtl1));
GST_INFO ( "gst_avi_demux: DVVAuxSrc %08x", GUINT32_FROM_LE (strf->DVVAuxSrc));
GST_INFO ( "gst_avi_demux: DVVAuxCtl %08x", GUINT32_FROM_LE (strf->DVVAuxCtl));
GST_INFO ( "gst_avi_demux: DVReserved1 %08x", GUINT32_FROM_LE (strf->DVReserved1));
GST_INFO ( "gst_avi_demux: DVReserved2 %08x", GUINT32_FROM_LE (strf->DVReserved2));
padname = g_strdup_printf ("video_%02d",
avi_demux->num_v_streams);
srcpad = gst_pad_new_from_template (videosrctempl, padname);
g_free (padname);
caps = gst_avi_demux_iavs_caps ();
if (caps != NULL) {
gst_pad_try_set_caps(srcpad, caps);
}
gst_pad_set_formats_function (srcpad, gst_avi_demux_get_src_formats);
gst_pad_set_event_mask_function (srcpad, gst_avi_demux_get_event_mask);
gst_pad_set_event_function (srcpad, gst_avi_demux_handle_src_event);
gst_pad_set_query_type_function (srcpad, gst_avi_demux_get_src_query_types);
gst_pad_set_query_function (srcpad, gst_avi_demux_handle_src_query);
gst_pad_set_convert_function (srcpad, gst_avi_demux_src_convert);
stream = &avi_demux->stream[avi_demux->num_streams];
stream->pad = srcpad;
gst_pad_set_element_private (srcpad, stream);
avi_demux->num_streams++;
avi_demux->num_v_streams++;
gst_element_add_pad (GST_ELEMENT (avi_demux), srcpad);
}
static void
gst_avi_debug_entry (const gchar *prefix, gst_avi_index_entry *entry)
{
GST_DEBUG ("%s: %05d %d %08llx %05d %14" G_GINT64_FORMAT " %08x %08x (%d) %08x",
prefix, entry->index_nr, entry->stream_nr,
(unsigned long long)entry->bytes_before,
entry->frames_before, entry->ts, entry->flags, entry->offset,
entry->offset, entry->size);
}
static void
gst_avi_demux_parse_index (GstAviDemux *avi_demux,
gulong filepos, gulong offset)
{
GstBuffer *buf;
gulong index_size;
guint32 got_bytes;
gint i;
gst_riff_index_entry *entry;
guint32 id;
if (!gst_bytestream_seek (avi_demux->bs, filepos + offset, GST_SEEK_METHOD_SET)) {
GST_INFO ( "avidemux: could not seek to index");
return;
}
do {
guint32 remaining;
GstEvent *event;
got_bytes = gst_bytestream_read (avi_demux->bs, &buf, 8);
if (got_bytes == 8)
break;
gst_bytestream_get_status (avi_demux->bs, &remaining, &event);
gst_event_unref (event);
} while (TRUE);
if (GST_BUFFER_OFFSET (buf) != filepos + offset || GST_BUFFER_SIZE (buf) != 8) {
GST_INFO ( "avidemux: could not get index, got %" G_GINT64_FORMAT " %d, expected %ld",
GST_BUFFER_OFFSET (buf), GST_BUFFER_SIZE (buf), filepos + offset);
goto end;
}
id = GUINT32_FROM_LE (*(guint32 *)GST_BUFFER_DATA (buf));
if (id != GST_RIFF_TAG_idx1) {
GST_INFO ( "avidemux: no index found");
goto end;
}
index_size = GUINT32_FROM_LE(*(guint32 *)(GST_BUFFER_DATA (buf) + 4));
gst_buffer_unref (buf);
gst_bytestream_size_hint (avi_demux->bs, index_size);
got_bytes = gst_bytestream_read (avi_demux->bs, &buf, index_size);
if (got_bytes < index_size) {
GST_INFO ( "avidemux: error reading index");
goto end;
}
avi_demux->index_size = index_size/sizeof(gst_riff_index_entry);
GST_INFO ( "avidemux: index size %lu", avi_demux->index_size);
avi_demux->index_entries = g_malloc (avi_demux->index_size * sizeof (gst_avi_index_entry));
entry = (gst_riff_index_entry *) GST_BUFFER_DATA (buf);
for (i = 0; i < avi_demux->index_size; i++) {
avi_stream_context *stream;
gint stream_nr;
gst_avi_index_entry *target = &avi_demux->index_entries[i];
GstFormat format;
guint32 id;
id = GUINT32_FROM_LE (entry[i].id);
stream_nr = CHUNKID_TO_STREAMNR (id);
if (stream_nr > avi_demux->num_streams || stream_nr < 0) {
avi_demux->index_entries[i].stream_nr = -1;
continue;
}
target->stream_nr = stream_nr;
stream = &avi_demux->stream[stream_nr];
target->index_nr = i;
target->flags = GUINT32_FROM_LE (entry[i].flags);
target->size = GUINT32_FROM_LE (entry[i].size);
target->offset = GUINT32_FROM_LE (entry[i].offset);
/* figure out if the index is 0 based or relative to the MOVI start */
if (i == 0) {
if (target->offset < filepos)
avi_demux->index_offset = filepos - 4;
else
avi_demux->index_offset = 0;
}
target->bytes_before = stream->total_bytes;
target->frames_before = stream->total_frames;
format = GST_FORMAT_TIME;
if (stream->strh.type == GST_RIFF_FCC_auds) {
/* all audio frames are keyframes */
target->flags |= GST_RIFF_IF_KEYFRAME;
}
/* constant rate stream */
if (stream->strh.samplesize && stream->strh.type == GST_RIFF_FCC_auds) {
gst_pad_convert (stream->pad, GST_FORMAT_BYTES, stream->total_bytes,
&format, &target->ts);
}
/* VBR stream */
else {
gst_pad_convert (stream->pad, GST_FORMAT_DEFAULT, stream->total_frames,
&format, &target->ts);
}
gst_avi_debug_entry ("index", target);
stream->total_bytes += target->size;
stream->total_frames++;
}
for (i = 0; i < avi_demux->num_streams; i++) {
avi_stream_context *stream;
stream = &avi_demux->stream[i];
GST_DEBUG ("stream %i: %d frames, %" G_GINT64_FORMAT " bytes",
i, stream->total_frames, stream->total_bytes);
}
gst_buffer_unref (buf);
end:
GST_DEBUG ("index offset at %08lx", filepos);
if (!gst_bytestream_seek (avi_demux->bs, filepos, GST_SEEK_METHOD_SET)) {
GST_INFO ( "avidemux: could not seek back to movi");
return;
}
}
static gst_avi_index_entry*
gst_avi_demux_index_next (GstAviDemux *avi_demux, gint stream_nr, gint start, guint32 flags)
{
gint i;
gst_avi_index_entry *entry = NULL;
for (i = start; i < avi_demux->index_size; i++) {
entry = &avi_demux->index_entries[i];
if (entry->stream_nr == stream_nr && (entry->flags & flags) == flags) {
break;
}
}
return entry;
}
static gst_avi_index_entry*
gst_avi_demux_index_entry_for_time (GstAviDemux *avi_demux, gint stream_nr, guint64 time, guint32 flags)
{
gst_avi_index_entry *entry = NULL, *last_entry = NULL;
gint i;
i = -1;
do {
entry = gst_avi_demux_index_next (avi_demux, stream_nr, i + 1, flags);
if (!entry)
return NULL;
i = entry->index_nr;
if (entry->ts <= time) {
last_entry = entry;
}
}
while (entry->ts <= time);
return last_entry;
}
static const GstFormat*
gst_avi_demux_get_src_formats (GstPad *pad)
{
avi_stream_context *stream = gst_pad_get_element_private (pad);
static const GstFormat src_a_formats[] = {
GST_FORMAT_TIME,
GST_FORMAT_BYTES,
GST_FORMAT_DEFAULT,
0
};
static const GstFormat src_v_formats[] = {
GST_FORMAT_TIME,
GST_FORMAT_DEFAULT,
0
};
return (stream->strh.type == GST_RIFF_FCC_auds ? src_a_formats : src_v_formats);
}
static gboolean
gst_avi_demux_src_convert (GstPad *pad, GstFormat src_format, gint64 src_value,
GstFormat *dest_format, gint64 *dest_value)
{
gboolean res = TRUE;
avi_stream_context *stream = gst_pad_get_element_private (pad);
if (stream->strh.type != GST_RIFF_FCC_auds &&
(src_format == GST_FORMAT_BYTES || *dest_format == GST_FORMAT_BYTES))
return FALSE;
switch (src_format) {
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_BYTES:
*dest_value = src_value * stream->strh.rate / (stream->strh.scale * GST_SECOND);
break;
case GST_FORMAT_DEFAULT:
*dest_value = src_value * stream->strh.rate / (stream->strh.scale * GST_SECOND);
break;
default:
res = FALSE;
break;
}
break;
case GST_FORMAT_BYTES:
switch (*dest_format) {
case GST_FORMAT_TIME:
*dest_value = ((gfloat)src_value) * GST_SECOND / stream->strh.rate;
break;
default:
res = FALSE;
break;
}
break;
case GST_FORMAT_DEFAULT:
switch (*dest_format) {
case GST_FORMAT_TIME:
*dest_value = ((((gfloat)src_value) * stream->strh.scale) / stream->strh.rate) * GST_SECOND;
break;
default:
res = FALSE;
break;
}
break;
default:
res = FALSE;
}
return res;
}
static const GstQueryType*
gst_avi_demux_get_src_query_types (GstPad *pad)
{
static const GstQueryType src_types[] = {
GST_QUERY_TOTAL,
GST_QUERY_POSITION,
0
};
return src_types;
}
static gboolean
gst_avi_demux_handle_src_query (GstPad *pad, GstQueryType type,
GstFormat *format, gint64 *value)
{
gboolean res = TRUE;
//GstAviDemux *avi_demux = GST_AVI_DEMUX (gst_pad_get_parent (pad));
avi_stream_context *stream = gst_pad_get_element_private (pad);
switch (type) {
case GST_QUERY_TOTAL:
switch (*format) {
case GST_FORMAT_TIME:
*value = (((gfloat)stream->strh.scale) * stream->strh.length / stream->strh.rate) * GST_SECOND;
break;
case GST_FORMAT_BYTES:
if (stream->strh.type == GST_RIFF_FCC_auds) {
*value = stream->total_bytes;
}
else
res = FALSE;
break;
case GST_FORMAT_DEFAULT:
if (stream->strh.type == GST_RIFF_FCC_auds)
*value = stream->strh.length * stream->strh.samplesize;
else if (stream->strh.type == GST_RIFF_FCC_vids)
*value = stream->strh.length;
else
res = FALSE;
break;
default:
res = FALSE;
break;
}
break;
case GST_QUERY_POSITION:
switch (*format) {
case GST_FORMAT_TIME:
if (stream->strh.samplesize && stream->strh.type == GST_RIFF_FCC_auds) {
//*value = (((gfloat)stream->current_byte) * stream->strh.scale / stream->strh.rate) * GST_SECOND;
*value = ((gfloat)stream->current_byte) * GST_SECOND / stream->strh.rate;
}
else {
*value = (((gfloat)stream->current_frame) * stream->strh.scale / stream->strh.rate) * GST_SECOND;
}
break;
case GST_FORMAT_BYTES:
*value = stream->current_byte;
break;
case GST_FORMAT_DEFAULT:
if (stream->strh.samplesize && stream->strh.type == GST_RIFF_FCC_auds)
*value = stream->current_byte * stream->strh.samplesize;
else
*value = stream->current_frame;
break;
default:
res = FALSE;
break;
}
break;
default:
res = FALSE;
break;
}
return res;
}
static gint32
gst_avi_demux_sync_streams (GstAviDemux *avi_demux, guint64 time)
{
gint i;
guint32 min_index = G_MAXUINT;
avi_stream_context *stream;
gst_avi_index_entry *entry;
for (i = 0; i < avi_demux->num_streams; i++) {
stream = &avi_demux->stream[i];
GST_DEBUG ("finding %d for time %" G_GINT64_FORMAT, i, time);
entry = gst_avi_demux_index_entry_for_time (avi_demux, stream->num, time, GST_RIFF_IF_KEYFRAME);
if (entry) {
gst_avi_debug_entry ("sync entry", entry);
min_index = MIN (entry->index_nr, min_index);
}
}
GST_DEBUG ("first index at %d", min_index);
/* now we know the entry we need to sync on. calculate number of frames to
* skip fro there on and the stream stats */
for (i = 0; i < avi_demux->num_streams; i++) {
gst_avi_index_entry *next_entry;
stream = &avi_demux->stream[i];
/* next entry */
next_entry = gst_avi_demux_index_next (avi_demux, stream->num, min_index, 0);
/* next entry with keyframe */
entry = gst_avi_demux_index_next (avi_demux, stream->num, min_index, GST_RIFF_IF_KEYFRAME);
gst_avi_debug_entry ("final sync", entry);
stream->current_byte = next_entry->bytes_before;
stream->current_frame = next_entry->frames_before;
stream->skip = entry->frames_before - next_entry->frames_before;
GST_DEBUG ("%d skip %d", stream->num, stream->skip);
}
GST_DEBUG ("final index at %d", min_index);
return min_index;
}
static gboolean
gst_avi_demux_send_event (GstElement *element, GstEvent *event)
{
const GList *pads;
pads = gst_element_get_pad_list (element);
while (pads) {
GstPad *pad = GST_PAD (pads->data);
if (GST_PAD_DIRECTION (pad) == GST_PAD_SRC) {
/* we ref the event here as we might have to try again if the event
* failed on this pad */
gst_event_ref (event);
if (gst_avi_demux_handle_src_event (pad, event)) {
gst_event_unref (event);
return TRUE;
}
}
pads = g_list_next (pads);
}
gst_event_unref (event);
return FALSE;
}
static const GstEventMask*
gst_avi_demux_get_event_mask (GstPad *pad)
{
static const GstEventMask masks[] = {
{ GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT },
{ GST_EVENT_SEEK_SEGMENT, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT },
{ 0, }
};
return masks;
}
static gboolean
gst_avi_demux_handle_src_event (GstPad *pad, GstEvent *event)
{
gboolean res = TRUE;
GstAviDemux *avi_demux = GST_AVI_DEMUX (gst_pad_get_parent (pad));
avi_stream_context *stream;
stream = gst_pad_get_element_private (pad);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK_SEGMENT:
stream->end_pos = GST_EVENT_SEEK_ENDOFFSET (event);
case GST_EVENT_SEEK:
GST_DEBUG ("seek format %d, %08x", GST_EVENT_SEEK_FORMAT (event), stream->strh.type);
switch (GST_EVENT_SEEK_FORMAT (event)) {
case GST_FORMAT_BYTES:
case GST_FORMAT_DEFAULT:
break;
case GST_FORMAT_TIME:
{
gst_avi_index_entry *seek_entry, *entry;
gint64 desired_offset = GST_EVENT_SEEK_OFFSET (event);
guint32 flags;
guint64 min_index;
/* no seek on audio yet */
if (stream->strh.type == GST_RIFF_FCC_auds) {
res = FALSE;
goto done;
}
GST_DEBUG ("seeking to %" G_GINT64_FORMAT, desired_offset);
flags = GST_RIFF_IF_KEYFRAME;
entry = gst_avi_demux_index_entry_for_time (avi_demux, stream->num, desired_offset, GST_RIFF_IF_KEYFRAME);
if (entry) {
desired_offset = entry->ts;
min_index = gst_avi_demux_sync_streams (avi_demux, desired_offset);
seek_entry = &avi_demux->index_entries[min_index];
gst_avi_debug_entry ("syncing to entry", seek_entry);
avi_demux->seek_offset = seek_entry->offset + avi_demux->index_offset;
avi_demux->seek_pending = TRUE;
avi_demux->last_seek = seek_entry->ts;
}
else {
GST_DEBUG ("no index entry found for time %" G_GINT64_FORMAT, desired_offset);
res = FALSE;
}
break;
}
default:
res = FALSE;
break;
}
break;
default:
res = FALSE;
break;
}
done:
gst_event_unref (event);
return res;
}
static gboolean
gst_avi_demux_handle_sink_event (GstAviDemux *avi_demux)
{
guint32 remaining;
GstEvent *event;
GstEventType type;
gboolean res = TRUE;
gst_bytestream_get_status (avi_demux->bs, &remaining, &event);
type = event? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
GST_DEBUG ("avidemux: event %p %d", event, type);
switch (type) {
case GST_EVENT_EOS:
gst_bytestream_flush (avi_demux->bs, remaining);
gst_pad_event_default (avi_demux->sinkpad, event);
res = FALSE;
goto done;
case GST_EVENT_FLUSH:
g_warning ("flush event");
break;
case GST_EVENT_DISCONTINUOUS:
{
gint i;
GstEvent *discont;
for (i = 0; i < avi_demux->num_streams; i++) {
avi_stream_context *stream = &avi_demux->stream[i];
if (GST_PAD_IS_USABLE (stream->pad)) {
GST_DEBUG ("sending discont on %d %" G_GINT64_FORMAT " + %" G_GINT64_FORMAT " = %" G_GINT64_FORMAT,
i, avi_demux->last_seek, stream->delay, avi_demux->last_seek + stream->delay);
discont = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
avi_demux->last_seek + stream->delay , NULL);
gst_pad_push (stream->pad, GST_BUFFER (discont));
}
}
break;
}
default:
g_warning ("unhandled event %d", type);
break;
}
gst_event_unref (event);
done:
return res;
}
static void
gst_avi_demux_loop (GstElement *element)
{
GstAviDemux *avi_demux;
gst_riff_riff chunk;
guint32 flush = 0;
guint32 got_bytes;
GstByteStream *bs;
guint64 pos;
avi_demux = GST_AVI_DEMUX (element);
bs = avi_demux->bs;
if (avi_demux->seek_pending) {
GST_DEBUG ("avidemux: seek pending to %" G_GINT64_FORMAT " %08llx",
avi_demux->seek_offset, (unsigned long long)avi_demux->seek_offset);
if (!gst_bytestream_seek (avi_demux->bs,
avi_demux->seek_offset,
GST_SEEK_METHOD_SET))
{
GST_INFO ( "avidemux: could not seek");
}
avi_demux->seek_pending = FALSE;
}
pos = gst_bytestream_tell (bs);
do {
gst_riff_riff *temp_chunk;
guint8 *tempdata;
guint32 skipsize;
/* read first two dwords to get chunktype and size */
while (TRUE) {
got_bytes = gst_bytestream_peek_bytes (bs, &tempdata, sizeof (gst_riff_chunk));
temp_chunk = (gst_riff_riff *) tempdata;
if (got_bytes < sizeof (gst_riff_chunk)) {
if (!gst_avi_demux_handle_sink_event (avi_demux))
return;
}
else break;
}
chunk.id = GUINT32_FROM_LE (temp_chunk->id);
chunk.size = GUINT32_FROM_LE (temp_chunk->size);
switch (chunk.id) {
case GST_RIFF_TAG_RIFF:
case GST_RIFF_TAG_LIST:
/* read complete list chunk */
while (TRUE) {
got_bytes = gst_bytestream_peek_bytes (bs, &tempdata, sizeof (gst_riff_list));
temp_chunk = (gst_riff_riff *) tempdata;
if (got_bytes < sizeof (gst_riff_list)) {
if (!gst_avi_demux_handle_sink_event (avi_demux))
return;
}
else break;
}
chunk.type = GUINT32_FROM_LE (temp_chunk->type);
skipsize = sizeof (gst_riff_list);
break;
default:
skipsize = sizeof (gst_riff_chunk);
break;
}
gst_bytestream_flush_fast (bs, skipsize);
}
while (FALSE);
/* need to flush an even number of bytes at the end */
flush = (chunk.size + 1) & ~1;
switch (avi_demux->state) {
case GST_AVI_DEMUX_START:
if (chunk.id != GST_RIFF_TAG_RIFF &&
chunk.type != GST_RIFF_RIFF_AVI) {
gst_element_error (element, "This doesn't appear to be an AVI file %08x %08x", chunk.id, chunk.type);
return;
}
avi_demux->state = GST_AVI_DEMUX_HEADER;
/* we are not going to flush lists */
flush = 0;
break;
case GST_AVI_DEMUX_HEADER:
GST_DEBUG ("riff tag: %4.4s %08x", (gchar *)&chunk.id, chunk.size);
switch (chunk.id) {
case GST_RIFF_TAG_LIST:
GST_DEBUG ("list type: %4.4s", (gchar *)&chunk.type);
switch (chunk.type) {
case GST_RIFF_LIST_movi:
{
guint64 filepos;
filepos = gst_bytestream_tell (bs);
gst_avi_demux_parse_index (avi_demux, filepos , chunk.size - 4);
if (avi_demux->avih.bufsize) {
gst_bytestream_size_hint (avi_demux->bs, avi_demux->avih.bufsize);
}
avi_demux->state = GST_AVI_DEMUX_MOVI;
/* and tell the bastards that we have stream info too */
gst_props_debug(avi_demux->streaminfo->properties);
g_object_notify(G_OBJECT(avi_demux), "streaminfo");
break;
}
case GST_RIFF_LIST_INFO:
gst_avi_demux_metadata (avi_demux, chunk.size);
break;
default:
break;
}
flush = 0;
break;
case GST_RIFF_TAG_avih:
gst_avi_demux_avih (avi_demux);
break;
case GST_RIFF_TAG_strh:
gst_avi_demux_strh (avi_demux);
break;
case GST_RIFF_TAG_strf:
switch (avi_demux->fcc_type) {
case GST_RIFF_FCC_vids:
gst_avi_demux_strf_vids (avi_demux);
break;
case GST_RIFF_FCC_auds:
gst_avi_demux_strf_auds (avi_demux);
break;
case GST_RIFF_FCC_iavs:
gst_avi_demux_strf_iavs (avi_demux);
break;
case GST_RIFF_FCC_pads:
case GST_RIFF_FCC_txts:
default:
GST_INFO ( "gst_avi_demux_chain: strh type %s not supported",
gst_riff_id_to_fourcc (avi_demux->fcc_type));
break;
}
break;
case GST_RIFF_TAG_strn:
gst_avi_demux_strn (avi_demux, chunk.size);
break;
case GST_RIFF_TAG_dmlh:
gst_avi_demux_dmlh (avi_demux);
break;
case GST_RIFF_TAG_JUNK:
case GST_RIFF_ISFT:
break;
default:
GST_DEBUG (" ***** unknown chunkid %08x", chunk.id);
break;
}
break;
case GST_AVI_DEMUX_MOVI:
switch (chunk.id) {
case GST_RIFF_00dc:
case GST_RIFF_00db:
case GST_RIFF_00__:
case GST_RIFF_01wb:
{
gint stream_id;
avi_stream_context *stream;
gint64 next_ts;
GstFormat format;
stream_id = CHUNKID_TO_STREAMNR (chunk.id);
stream = &avi_demux->stream[stream_id];
GST_DEBUG ("gst_avi_demux_chain: tag found %08x size %08x stream_id %d",
chunk.id, chunk.size, stream_id);
format = GST_FORMAT_TIME;
gst_pad_query (stream->pad, GST_QUERY_POSITION, &format, &next_ts);
if (stream->strh.init_frames == stream->current_frame && stream->delay == 0)
stream->delay = next_ts;
stream->current_frame++;
stream->current_byte += chunk.size;
if (stream->skip) {
stream->skip--;
}
else {
if (GST_PAD_IS_USABLE (stream->pad)) {
if (next_ts >= stream->end_pos) {
gst_pad_push (stream->pad, GST_BUFFER (gst_event_new (GST_EVENT_EOS)));
GST_DEBUG ("end stream %d: %" G_GINT64_FORMAT " %d %" G_GINT64_FORMAT,
stream_id, next_ts, stream->current_frame - 1,
stream->end_pos);
}
else {
GstBuffer *buf;
guint32 got_bytes;
if (chunk.size) {
GstClockTime dur_ts;
got_bytes = gst_bytestream_peek (avi_demux->bs, &buf, chunk.size);
GST_BUFFER_TIMESTAMP (buf) = next_ts;
gst_pad_query (stream->pad, GST_QUERY_POSITION, &format, &dur_ts);
GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
if (stream->need_flush) {
/* FIXME, do some flush event here */
stream->need_flush = FALSE;
}
GST_DEBUG ("send stream %d: %" G_GINT64_FORMAT " %d %" G_GINT64_FORMAT " %08x",
stream_id, next_ts, stream->current_frame - 1,
stream->delay, chunk.size);
gst_pad_push(stream->pad, buf);
}
}
}
}
break;
}
default:
GST_DEBUG (" ***** unknown chunkid %08x", chunk.id);
break;
}
break;
}
while (flush) {
gboolean res;
res = gst_bytestream_flush (avi_demux->bs, flush);
if (!res) {
guint32 remaining;
GstEvent *event;
gst_bytestream_get_status (avi_demux->bs, &remaining, &event);
gst_event_unref (event);
}
else
break;
}
}
static GstElementStateReturn
gst_avi_demux_change_state (GstElement *element)
{
GstAviDemux *avi_demux = GST_AVI_DEMUX (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_PAUSED:
avi_demux->bs = gst_bytestream_new (avi_demux->sinkpad);
avi_demux->last_seek = 0;
avi_demux->state = GST_AVI_DEMUX_START;
avi_demux->num_streams = 0;
avi_demux->num_v_streams = 0;
avi_demux->num_a_streams = 0;
avi_demux->index_entries = NULL;
avi_demux->index_size = 0;
avi_demux->seek_pending = 0;
avi_demux->metadata = NULL;
gst_avi_demux_streaminfo(avi_demux);
break;
case GST_STATE_PAUSED_TO_PLAYING:
break;
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
gst_bytestream_destroy (avi_demux->bs);
gst_caps_replace (&avi_demux->metadata, NULL);
gst_caps_replace (&avi_demux->streaminfo, NULL);
break;
case GST_STATE_READY_TO_NULL:
break;
default:
break;
}
parent_class->change_state (element);
return GST_STATE_SUCCESS;
}
static void
gst_avi_demux_get_property (GObject *object, guint prop_id, GValue *value,
GParamSpec *pspec)
{
GstAviDemux *src;
g_return_if_fail (GST_IS_AVI_DEMUX (object));
src = GST_AVI_DEMUX (object);
switch (prop_id) {
case ARG_BITRATE:
break;
case ARG_METADATA:
g_value_set_boxed(value, src->metadata);
break;
case ARG_STREAMINFO:
g_value_set_boxed(value, src->streaminfo);
break;
default:
break;
}
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
GstTypeFactory *type;
gint i = 0;
GstCaps *audcaps = NULL, *vidcaps = NULL, *temp;
guint32 vid_list[] = {
GST_MAKE_FOURCC('I','4','2','0'),
GST_MAKE_FOURCC('Y','U','Y','2'),
GST_MAKE_FOURCC('M','J','P','G'),
GST_MAKE_FOURCC('D','V','S','D'),
GST_MAKE_FOURCC('W','M','V','1'),
GST_MAKE_FOURCC('W','M','V','2'),
GST_MAKE_FOURCC('M','P','G','4'),
GST_MAKE_FOURCC('M','P','4','2'),
GST_MAKE_FOURCC('M','P','4','3'),
GST_MAKE_FOURCC('H','F','Y','U'),
GST_MAKE_FOURCC('D','I','V','3'),
GST_MAKE_FOURCC('M','P','E','G'),
GST_MAKE_FOURCC('H','2','6','3'),
GST_MAKE_FOURCC('D','I','V','X'),
GST_MAKE_FOURCC('X','V','I','D'),
GST_MAKE_FOURCC('3','I','V','1'),
0 /* end */
};
gint aud_list[] = {
GST_RIFF_WAVE_FORMAT_MPEGL3,
GST_RIFF_WAVE_FORMAT_MPEGL12,
GST_RIFF_WAVE_FORMAT_PCM,
GST_RIFF_WAVE_FORMAT_VORBIS1,
GST_RIFF_WAVE_FORMAT_A52,
GST_RIFF_WAVE_FORMAT_ALAW,
GST_RIFF_WAVE_FORMAT_MULAW,
-1 /* end */
};
/* this filter needs the riff parser */
if (!gst_library_load ("gstbytestream"))
return FALSE;
if (!gst_library_load ("gstriff"))
return FALSE;
/* create an elementfactory for the avi_demux element */
factory = gst_element_factory_new ("avidemux", GST_TYPE_AVI_DEMUX,
&gst_avi_demux_details);
g_return_val_if_fail (factory != NULL, FALSE);
gst_element_factory_set_rank (factory, GST_ELEMENT_RANK_PRIMARY);
for (i = 0; aud_list[i] != -1; i++) {
temp = gst_avi_demux_audio_caps (aud_list[i], NULL, NULL);
audcaps = gst_caps_append (audcaps, temp);
}
audiosrctempl = gst_pad_template_new ("audio_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
audcaps, NULL);
for (i = 0; vid_list[i] != 0; i++) {
temp = gst_avi_demux_video_caps (vid_list[i], NULL, NULL, NULL);
vidcaps = gst_caps_append (vidcaps, temp);
}
vidcaps = gst_caps_append (vidcaps,
gst_avi_demux_iavs_caps ());
videosrctempl = gst_pad_template_new ("video_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
vidcaps, NULL);
gst_element_factory_add_pad_template (factory, audiosrctempl);
gst_element_factory_add_pad_template (factory, videosrctempl);
gst_element_factory_add_pad_template (factory,
GST_PAD_TEMPLATE_GET (sink_templ));
type = gst_type_factory_new (&avidefinition);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"avidemux",
plugin_init
};
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