gstreamer/gst/realmedia/rmdemux.c
Owen Fraser-Green 4f31b7a386 Added call to no_more_pads
Original commit message from CVS:
Added call to no_more_pads
2005-07-03 17:40:04 +00:00

1040 lines
30 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2003> David A. Schleef <ds@schleef.org>
* Copyright (C) <2004> Stephane Loeuillet <gstreamer@leroutier.net>
* Copyright (C) <2005> Owen Fraser-Green <owen@discobabe.net>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
* gst / realmedia / rmdemux.c (gst_rmdemux_add_stream), (gst_rmdemux_src_getcaps):Added getcaps
function
#include "rmdemux.h"
#include <string.h>
#include <zlib.h>
#define RMDEMUX_GUINT32_GET(a) GST_READ_UINT32_BE(a)
#define RMDEMUX_GUINT16_GET(a) GST_READ_UINT16_BE(a)
#define RMDEMUX_FOURCC_GET(a) GST_READ_UINT32_LE(a)
typedef struct _GstRMDemuxIndex GstRMDemuxIndex;
struct _GstRMDemuxStream
{
guint32 subtype;
guint32 fourcc;
guint32 subformat;
guint32 format;
int id;
GstCaps *caps;
GstPad *pad;
int timescale;
int sample_index;
GstRMDemuxIndex *index;
int index_length;
double frame_rate;
guint16 width;
guint16 height;
guint16 flavor;
guint16 rate; // samplerate
guint16 n_channels; // channels
guint16 sample_width; // bits_per_sample
guint16 leaf_size; // subpacket_size
guint32 packet_size; // coded_frame_size
guint16 version;
guint32 extra_data_size; // codec_data_length
guint8 *extra_data; // extras
};
struct _GstRMDemuxIndex
{
int unknown;
guint32 offset;
int timestamp;
int frame;
};
enum GstRMDemuxState
{
RMDEMUX_STATE_NULL,
RMDEMUX_STATE_HEADER,
RMDEMUX_STATE_HEADER_UNKNOWN,
RMDEMUX_STATE_HEADER_RMF,
RMDEMUX_STATE_HEADER_PROP,
RMDEMUX_STATE_HEADER_MDPR,
RMDEMUX_STATE_HEADER_INDX,
RMDEMUX_STATE_HEADER_DATA,
RMDEMUX_STATE_HEADER_CONT,
RMDEMUX_STATE_HEADER_SEEKING,
RMDEMUX_STATE_SEEKING,
RMDEMUX_STATE_DATA_PACKET,
RMDEMUX_STATE_SEEKING_EOS,
RMDEMUX_STATE_EOS
};
enum GstRMDemuxStreamType
{
GST_RMDEMUX_STREAM_UNKNOWN,
GST_RMDEMUX_STREAM_VIDEO,
GST_RMDEMUX_STREAM_AUDIO,
GST_RMDEMUX_STREAM_FILEINFO
};
static GstElementDetails gst_rmdemux_details = {
"RealMedia Demuxer",
"Codec/Demuxer",
"Demultiplex a RealMedia file into audio and video streams",
"David Schleef <ds@schleef.org>"
};
enum
{
LAST_SIGNAL
};
enum
{
ARG_0
};
static GstStaticPadTemplate gst_rmdemux_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/vnd.rn-realmedia")
);
static GstStaticPadTemplate gst_rmdemux_videosrc_template =
GST_STATIC_PAD_TEMPLATE ("video_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate gst_rmdemux_audiosrc_template =
GST_STATIC_PAD_TEMPLATE ("audio_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
GST_DEBUG_CATEGORY_STATIC (rmdemux_debug);
#define GST_CAT_DEFAULT rmdemux_debug
static GstElementClass *parent_class = NULL;
static void gst_rmdemux_class_init (GstRMDemuxClass * klass);
static void gst_rmdemux_base_init (GstRMDemuxClass * klass);
static void gst_rmdemux_init (GstRMDemux * rmdemux);
static void gst_rmdemux_dispose (GObject * object);
static GstElementStateReturn gst_rmdemux_change_state (GstElement * element);
static GstFlowReturn gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_rmdemux_sink_event (GstPad * pad, GstEvent * event);
static void gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const void *data,
int length);
static void gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const void *data,
int length);
static void gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const void *data,
int length);
static void gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const void *data,
int length);
static void gst_rmdemux_parse_data (GstRMDemux * rmdemux, const void *data,
int length);
static void gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const void *data,
int length);
static void gst_rmdemux_parse_packet (GstRMDemux * rmdemux, const void *data,
guint16 version, guint16 length);
static GstCaps *gst_rmdemux_src_getcaps (GstPad * pad);
static GstRMDemuxStream *gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux,
int id);
static GType
gst_rmdemux_get_type (void)
{
static GType rmdemux_type = 0;
if (!rmdemux_type) {
static const GTypeInfo rmdemux_info = {
sizeof (GstRMDemuxClass),
(GBaseInitFunc) gst_rmdemux_base_init, NULL,
(GClassInitFunc) gst_rmdemux_class_init,
NULL, NULL, sizeof (GstRMDemux), 0,
(GInstanceInitFunc) gst_rmdemux_init,
};
rmdemux_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstRMDemux", &rmdemux_info,
0);
}
return rmdemux_type;
}
static void
gst_rmdemux_base_init (GstRMDemuxClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_rmdemux_sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_rmdemux_videosrc_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_rmdemux_audiosrc_template));
gst_element_class_set_details (element_class, &gst_rmdemux_details);
}
static void
gst_rmdemux_class_init (GstRMDemuxClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gstelement_class->change_state = gst_rmdemux_change_state;
GST_DEBUG_CATEGORY_INIT (rmdemux_debug, "rmdemux",
0, "Demuxer for Realmedia streams");
gobject_class->dispose = gst_rmdemux_dispose;
}
static void
gst_rmdemux_dispose (GObject * object)
{
GstRMDemux *rmdemux = GST_RMDEMUX (object);
if (rmdemux->adapter) {
g_object_unref (rmdemux->adapter);
rmdemux->adapter = NULL;
}
GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
}
static void
gst_rmdemux_init (GstRMDemux * rmdemux)
{
rmdemux->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_rmdemux_sink_template), "sink");
gst_pad_set_event_function (rmdemux->sinkpad, gst_rmdemux_sink_event);
gst_pad_set_chain_function (rmdemux->sinkpad, gst_rmdemux_chain);
gst_element_add_pad (GST_ELEMENT (rmdemux), rmdemux->sinkpad);
rmdemux->adapter = gst_adapter_new ();
}
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "rmdemux",
GST_RANK_PRIMARY, GST_TYPE_RMDEMUX);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"rmdemux",
"Realmedia stream demuxer",
plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN)
static gboolean gst_rmdemux_sink_event (GstPad * pad, GstEvent * event)
{
gboolean ret = TRUE;
GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
GST_LOG_OBJECT (rmdemux, "handling event");
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_DISCONTINUOUS:
GST_DEBUG_OBJECT (rmdemux, "discontinuous event");
gst_event_unref (event);
break;
default:
ret = gst_pad_event_default (rmdemux->sinkpad, event);
break;
}
return ret;
}
static GstElementStateReturn
gst_rmdemux_change_state (GstElement * element)
{
GstRMDemux *rmdemux = GST_RMDEMUX (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_PAUSED:
rmdemux->state = RMDEMUX_STATE_HEADER;
rmdemux->have_pads = FALSE;
break;
case GST_STATE_PAUSED_TO_PLAYING:
break;
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
gst_adapter_clear (rmdemux->adapter);
break;
case GST_STATE_READY_TO_NULL:
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static GstCaps *
gst_rmdemux_src_getcaps (GstPad * pad)
{
guint n;
GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
GST_DEBUG_OBJECT (rmdemux, "getcaps");
for (n = 0; n < rmdemux->n_streams; n++) {
if (rmdemux->streams[n] != NULL && rmdemux->streams[n]->pad == pad) {
return gst_caps_copy (rmdemux->streams[n]->caps);
}
}
/* Base case */
return gst_caps_new_empty ();
}
static GstFlowReturn
gst_rmdemux_chain (GstPad * pad, GstBuffer * buffer)
{
GstFlowReturn ret = GST_FLOW_OK;
const guint8 *data;
guint16 version;
GstRMDemux *rmdemux = GST_RMDEMUX (GST_PAD_PARENT (pad));
GST_STREAM_LOCK (pad);
gst_adapter_push (rmdemux->adapter, buffer);
while (TRUE) {
switch (rmdemux->state) {
case RMDEMUX_STATE_HEADER:
{
if (gst_adapter_available (rmdemux->adapter) < 10)
goto unlock;
data = gst_adapter_peek (rmdemux->adapter, 10);
rmdemux->object_id = RMDEMUX_FOURCC_GET (data + 0);
rmdemux->size = RMDEMUX_GUINT32_GET (data + 4) - 10;
rmdemux->object_version = RMDEMUX_GUINT16_GET (data + 8);
GST_LOG_OBJECT (rmdemux, "header found with object_id="
GST_FOURCC_FORMAT
" size=%08x object_version=%d",
GST_FOURCC_ARGS (rmdemux->object_id), rmdemux->size,
rmdemux->object_version);
gst_adapter_flush (rmdemux->adapter, 10);
switch (rmdemux->object_id) {
case GST_MAKE_FOURCC ('.', 'R', 'M', 'F'):
rmdemux->state = RMDEMUX_STATE_HEADER_RMF;
break;
case GST_MAKE_FOURCC ('P', 'R', 'O', 'P'):
rmdemux->state = RMDEMUX_STATE_HEADER_PROP;
break;
case GST_MAKE_FOURCC ('M', 'D', 'P', 'R'):
rmdemux->state = RMDEMUX_STATE_HEADER_MDPR;
break;
case GST_MAKE_FOURCC ('I', 'N', 'D', 'X'):
rmdemux->state = RMDEMUX_STATE_HEADER_INDX;
break;
case GST_MAKE_FOURCC ('D', 'A', 'T', 'A'):
rmdemux->state = RMDEMUX_STATE_HEADER_DATA;
break;
case GST_MAKE_FOURCC ('C', 'O', 'N', 'T'):
rmdemux->state = RMDEMUX_STATE_HEADER_CONT;
break;
default:
rmdemux->state = RMDEMUX_STATE_HEADER_UNKNOWN;
break;
}
break;
}
case RMDEMUX_STATE_HEADER_UNKNOWN:
{
if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
goto unlock;
GST_WARNING_OBJECT (rmdemux, "Unknown object_id " GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (rmdemux->object_id));
gst_adapter_flush (rmdemux->adapter, rmdemux->size);
rmdemux->state = RMDEMUX_STATE_HEADER;
break;
}
case RMDEMUX_STATE_HEADER_RMF:
{
if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
goto unlock;
if ((rmdemux->object_version == 0) || (rmdemux->object_version == 1)) {
data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
gst_rmdemux_parse__rmf (rmdemux, data, rmdemux->size);
}
gst_adapter_flush (rmdemux->adapter, rmdemux->size);
rmdemux->state = RMDEMUX_STATE_HEADER;
break;
}
case RMDEMUX_STATE_HEADER_PROP:
{
if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
goto unlock;
data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
gst_rmdemux_parse_prop (rmdemux, data, rmdemux->size);
gst_adapter_flush (rmdemux->adapter, rmdemux->size);
rmdemux->state = RMDEMUX_STATE_HEADER;
break;
}
case RMDEMUX_STATE_HEADER_MDPR:
{
if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
goto unlock;
data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
gst_rmdemux_parse_mdpr (rmdemux, data, rmdemux->size);
gst_adapter_flush (rmdemux->adapter, rmdemux->size);
rmdemux->state = RMDEMUX_STATE_HEADER;
break;
}
case RMDEMUX_STATE_HEADER_CONT:
{
if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
goto unlock;
data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
gst_rmdemux_parse_cont (rmdemux, data, rmdemux->size);
gst_adapter_flush (rmdemux->adapter, rmdemux->size);
rmdemux->state = RMDEMUX_STATE_HEADER;
break;
}
case RMDEMUX_STATE_HEADER_DATA:
{
/* If we haven't already done so then signal there are no more pads */
if (!rmdemux->have_pads) {
gst_element_no_more_pads (GST_ELEMENT (rmdemux));
rmdemux->have_pads = TRUE;
}
/* The actual header is only 8 bytes */
rmdemux->size = 8;
if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
goto unlock;
data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
gst_rmdemux_parse_data (rmdemux, data, rmdemux->size);
gst_adapter_flush (rmdemux->adapter, rmdemux->size);
rmdemux->state = RMDEMUX_STATE_DATA_PACKET;
break;
}
case RMDEMUX_STATE_HEADER_INDX:
{
if (gst_adapter_available (rmdemux->adapter) < rmdemux->size)
goto unlock;
data = gst_adapter_peek (rmdemux->adapter, rmdemux->size);
gst_rmdemux_parse_indx (rmdemux, data, rmdemux->size);
gst_adapter_flush (rmdemux->adapter, rmdemux->size);
rmdemux->state = RMDEMUX_STATE_HEADER;
break;
}
case RMDEMUX_STATE_DATA_PACKET:
{
if (gst_adapter_available (rmdemux->adapter) < 2)
goto unlock;
data = gst_adapter_peek (rmdemux->adapter, 2);
version = RMDEMUX_GUINT16_GET (data);
GST_DEBUG_OBJECT (rmdemux, "Data packet with version=%d", version);
if (version == 0 || version == 1) {
guint16 length;
if (gst_adapter_available (rmdemux->adapter) < 4)
goto unlock;
data = gst_adapter_peek (rmdemux->adapter, 4);
length = RMDEMUX_GUINT16_GET (data + 2);
if (length == 0) {
gst_adapter_flush (rmdemux->adapter, 2);
} else {
if (gst_adapter_available (rmdemux->adapter) < length)
goto unlock;
data = gst_adapter_peek (rmdemux->adapter, length);
gst_rmdemux_parse_packet (rmdemux, data + 4, version, length);
rmdemux->chunk_index++;
gst_adapter_flush (rmdemux->adapter, length);
}
if (rmdemux->chunk_index == rmdemux->n_chunks || length == 0)
rmdemux->state = RMDEMUX_STATE_HEADER;
} else {
/* Stream done */
gst_adapter_flush (rmdemux->adapter, 2);
rmdemux->state = RMDEMUX_STATE_HEADER;
}
}
}
}
unlock:
GST_STREAM_UNLOCK (pad);
return ret;
}
static GstRMDemuxStream *
gst_rmdemux_get_stream_by_id (GstRMDemux * rmdemux, int id)
{
int i;
GstRMDemuxStream *stream;
for (i = 0; i < rmdemux->n_streams; i++) {
stream = rmdemux->streams[i];
if (stream->id == id) {
return stream;
}
}
return NULL;
}
void
gst_rmdemux_add_stream (GstRMDemux * rmdemux, GstRMDemuxStream * stream)
{
int version = 0;
if (stream->subtype == GST_RMDEMUX_STREAM_VIDEO) {
stream->pad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_rmdemux_videosrc_template), g_strdup_printf ("video_%02d",
rmdemux->n_video_streams));
switch (stream->fourcc) {
case GST_RM_VDO_RV10:
version = 1;
break;
case GST_RM_VDO_RV20:
version = 2;
break;
case GST_RM_VDO_RV30:
version = 3;
break;
case GST_RM_VDO_RV40:
version = 4;
break;
default:
GST_WARNING_OBJECT (rmdemux, "Unknown video FOURCC code");
}
if (version) {
stream->caps =
gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT,
(int) version,
"format", G_TYPE_INT,
(int) stream->format,
"subformat", G_TYPE_INT, (int) stream->subformat, NULL);
}
if (stream->caps) {
gst_caps_set_simple (stream->caps,
"width", G_TYPE_INT, stream->width,
"height", G_TYPE_INT, stream->height,
"framerate", G_TYPE_DOUBLE, stream->frame_rate, NULL);
}
rmdemux->n_video_streams++;
} else if (stream->subtype == GST_RMDEMUX_STREAM_AUDIO) {
stream->pad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_rmdemux_audiosrc_template), g_strdup_printf ("audio_%02d",
rmdemux->n_audio_streams));
switch (stream->fourcc) {
/* Older RealAudio Codecs */
case GST_RM_AUD_14_4:
version = 1;
break;
case GST_RM_AUD_28_8:
version = 2;
break;
/* DolbyNet (Dolby AC3, low bitrate) */
case GST_RM_AUD_DNET:
stream->caps =
gst_caps_new_simple ("audio/x-ac3", "rate", G_TYPE_INT,
(int) stream->rate, NULL);
break;
/* RealAudio 10 (AAC) */
case GST_RM_AUD_RAAC:
version = 10;
break;
/* MPEG-4 based */
case GST_RM_AUD_RACP:
stream->caps =
gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT,
(int) 4, NULL);
break;
/* Sony ATRAC3 */
case GST_RM_AUD_ATRC:
stream->caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
break;
/* RealAudio G2 audio */
case GST_RM_AUD_COOK:
version = 8;
break;
/* RALF is lossless */
case GST_RM_AUD_RALF:
stream->caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
break;
/* Sipro/ACELP.NET Voice Codec (MIME unknown) */
case GST_RM_AUD_SIPR:
stream->caps = gst_caps_new_simple ("audio/x-sipro", NULL);
break;
default:
GST_WARNING_OBJECT (rmdemux,
"Unknown audio FOURCC code " GST_FOURCC_FORMAT, stream->fourcc);
break;
}
if (version) {
stream->caps =
gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT,
(int) version, NULL);
}
if (stream->caps) {
gst_caps_set_simple (stream->caps,
"flavor", G_TYPE_INT, (int) stream->flavor,
"rate", G_TYPE_INT, (int) stream->rate,
"channels", G_TYPE_INT, (int) stream->n_channels,
"width", G_TYPE_INT, (int) stream->sample_width,
"leaf_size", G_TYPE_INT, (int) stream->leaf_size,
"packet_size", G_TYPE_INT, (int) stream->packet_size,
"height", G_TYPE_INT, (int) stream->height, NULL);
}
rmdemux->n_audio_streams++;
} else {
GST_WARNING_OBJECT (rmdemux, "not adding stream of type %d",
stream->subtype);
return;
}
GST_PAD_ELEMENT_PRIVATE (stream->pad) = stream;
rmdemux->streams[rmdemux->n_streams] = stream;
rmdemux->n_streams++;
GST_LOG_OBJECT (rmdemux, "n_streams is now %d", rmdemux->n_streams);
if (stream->pad) {
GST_DEBUG_OBJECT (rmdemux, "setting caps: %p", stream->caps);
gst_pad_set_caps (stream->pad, stream->caps);
gst_caps_unref (stream->caps);
gst_pad_set_getcaps_function (stream->pad, gst_rmdemux_src_getcaps);
GST_DEBUG_OBJECT (rmdemux, "adding pad %p to rmdemux %p", stream->pad,
rmdemux);
gst_element_add_pad (GST_ELEMENT (rmdemux), stream->pad);
/* If there's some extra data then send it as the first packet */
if (stream->extra_data_size > 0) {
GstBuffer *buffer;
if (gst_pad_alloc_buffer (stream->pad, GST_BUFFER_OFFSET_NONE,
stream->extra_data_size, stream->caps, &buffer) != GST_FLOW_OK) {
GST_WARNING_OBJECT (rmdemux, "failed to alloc src buffer for stream %d",
stream->id);
return;
}
memcpy (GST_BUFFER_DATA (buffer), stream->extra_data,
stream->extra_data_size);
if (GST_PAD_IS_USABLE (stream->pad)) {
GST_DEBUG_OBJECT (rmdemux, "Pushing extra_data of size %d to pad",
stream->extra_data_size);
gst_pad_push (stream->pad, buffer);
}
}
}
}
G_GNUC_UNUSED static void
re_hexdump_bytes (guint8 * ptr, int len, int offset)
{
guint8 *end = ptr + len;
int i;
while (1) {
if (ptr >= end)
return;
g_print ("%08x: ", offset);
for (i = 0; i < 16; i++) {
if (ptr + i >= end) {
g_print (" ");
} else {
g_print ("%02x ", ptr[i]);
}
}
for (i = 0; i < 16; i++) {
if (ptr + i >= end) {
g_print (" ");
} else {
g_print ("%c", g_ascii_isprint (ptr[i]) ? ptr[i] : '.');
}
}
g_print ("\n");
ptr += 16;
offset += 16;
}
}
static char *
re_get_pascal_string (const guint8 * ptr)
{
int length;
length = ptr[0];
return g_strndup ((char *) ptr + 1, length);
}
static int
re_skip_pascal_string (const guint8 * ptr)
{
int length;
length = ptr[0];
return length + 1;
}
static void
gst_rmdemux_parse__rmf (GstRMDemux * rmdemux, const void *data, int length)
{
GST_LOG_OBJECT (rmdemux, "file_version: %d", RMDEMUX_GUINT32_GET (data));
GST_LOG_OBJECT (rmdemux, "num_headers: %d", RMDEMUX_GUINT32_GET (data + 4));
}
static void
gst_rmdemux_parse_prop (GstRMDemux * rmdemux, const void *data, int length)
{
GST_LOG_OBJECT (rmdemux, "max bitrate: %d", RMDEMUX_GUINT32_GET (data));
GST_LOG_OBJECT (rmdemux, "avg bitrate: %d", RMDEMUX_GUINT32_GET (data + 4));
GST_LOG_OBJECT (rmdemux, "max packet size: %d",
RMDEMUX_GUINT32_GET (data + 8));
GST_LOG_OBJECT (rmdemux, "avg packet size: %d",
RMDEMUX_GUINT32_GET (data + 12));
GST_LOG_OBJECT (rmdemux, "number of packets: %d",
RMDEMUX_GUINT32_GET (data + 16));
GST_LOG_OBJECT (rmdemux, "duration: %d", RMDEMUX_GUINT32_GET (data + 20));
rmdemux->duration = RMDEMUX_GUINT32_GET (data + 20);
GST_LOG_OBJECT (rmdemux, "preroll: %d", RMDEMUX_GUINT32_GET (data + 24));
GST_LOG_OBJECT (rmdemux, "offset of INDX section: 0x%08x",
RMDEMUX_GUINT32_GET (data + 28));
GST_LOG_OBJECT (rmdemux, "offset of DATA section: 0x%08x",
RMDEMUX_GUINT32_GET (data + 32));
GST_LOG_OBJECT (rmdemux, "n streams: %d", RMDEMUX_GUINT16_GET (data + 36));
GST_LOG_OBJECT (rmdemux, "flags: 0x%04x", RMDEMUX_GUINT16_GET (data + 38));
}
static void
gst_rmdemux_parse_mdpr (GstRMDemux * rmdemux, const void *data, int length)
{
GstRMDemuxStream *stream;
char *stream1_type_string;
char *stream2_type_string;
int stream_type;
int offset;
//re_hexdump_bytes ((guint8 *) data, length, 0);
stream = g_new0 (GstRMDemuxStream, 1);
stream->id = RMDEMUX_GUINT16_GET (data);
GST_LOG_OBJECT (rmdemux, "stream_number=%d", stream->id);
offset = 30;
stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
stream1_type_string = re_get_pascal_string (data + offset);
offset += re_skip_pascal_string (data + offset);
stream2_type_string = re_get_pascal_string (data + offset);
offset += re_skip_pascal_string (data + offset);
/* stream1_type_string for audio and video stream is a "put_whatever_you_want" field :
observed values :
- "[The ]Video/Audio Stream" (File produced by an official Real encoder)
- "RealVideoPremierePlugIn-VIDEO/AUDIO" (File produced by Abobe Premiere)
so, we should not rely on it to know which stream type it is
*/
GST_LOG_OBJECT (rmdemux, "stream type: %s", stream1_type_string);
GST_LOG_OBJECT (rmdemux, "MIME type=%s", stream2_type_string);
if (strcmp (stream2_type_string, "video/x-pn-realvideo") == 0) {
stream_type = GST_RMDEMUX_STREAM_VIDEO;
} else if (strcmp (stream2_type_string, "audio/x-pn-realaudio") == 0) {
stream_type = GST_RMDEMUX_STREAM_AUDIO;
} else if (strcmp (stream1_type_string, "") == 0 &&
strcmp (stream2_type_string, "logical-fileinfo") == 0) {
stream_type = GST_RMDEMUX_STREAM_FILEINFO;
} else {
stream_type = GST_RMDEMUX_STREAM_UNKNOWN;
GST_WARNING_OBJECT (rmdemux, "unknown stream type \"%s\",\"%s\"",
stream1_type_string, stream2_type_string);
}
g_free (stream1_type_string);
g_free (stream2_type_string);
offset += 4;
stream->subtype = stream_type;
switch (stream_type) {
case GST_RMDEMUX_STREAM_VIDEO:
/* RV10/RV20/RV30/RV40 => video/x-pn-realvideo, version=1,2,3,4 */
stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 8);
stream->width = RMDEMUX_GUINT16_GET (data + offset + 12);
stream->height = RMDEMUX_GUINT16_GET (data + offset + 14);
stream->rate = RMDEMUX_GUINT16_GET (data + offset + 16);
stream->subformat = RMDEMUX_GUINT32_GET (data + offset + 26);
stream->format = RMDEMUX_GUINT32_GET (data + offset + 30);
stream->extra_data_size = length - (offset + 34);
stream->extra_data = (guint8 *) data + offset + 34;
stream->frame_rate = (double) RMDEMUX_GUINT16_GET (data + offset + 22) +
((double) RMDEMUX_GUINT16_GET (data + offset + 24) / 65536.0);
GST_DEBUG_OBJECT (rmdemux,
"Video stream with fourcc=" GST_FOURCC_FORMAT
" width=%d height=%d rate=%d frame_rate=%f subformat=%x format=%x extra_data_size=%d",
GST_FOURCC_ARGS (stream->fourcc), stream->width, stream->height,
stream->rate, stream->frame_rate, stream->subformat, stream->format,
stream->extra_data_size);
break;
case GST_RMDEMUX_STREAM_AUDIO:{
stream->version = RMDEMUX_GUINT16_GET (data + offset + 4);
stream->flavor = RMDEMUX_GUINT16_GET (data + offset + 22);
stream->packet_size = RMDEMUX_GUINT32_GET (data + offset + 24);
stream->leaf_size = RMDEMUX_GUINT16_GET (data + offset + 44);
stream->height = RMDEMUX_GUINT16_GET (data + offset + 40);
switch (stream->version) {
case 4:
stream->rate = RMDEMUX_GUINT16_GET (data + offset + 48);
stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 52);
stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 54);
stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 62);
stream->extra_data_size = 16;
stream->extra_data = (guint8 *) data + offset + 71;
break;
case 5:
stream->rate = RMDEMUX_GUINT16_GET (data + offset + 54);
stream->sample_width = RMDEMUX_GUINT16_GET (data + offset + 58);
stream->n_channels = RMDEMUX_GUINT16_GET (data + offset + 60);
stream->fourcc = RMDEMUX_FOURCC_GET (data + offset + 66);
stream->extra_data_size = RMDEMUX_GUINT32_GET (data + offset + 74);
stream->extra_data = (guint8 *) data + offset + 78;
break;
}
/* 14_4, 28_8, cook, dnet, sipr, raac, racp, ralf, atrc */
GST_DEBUG_OBJECT (rmdemux,
"Audio stream with rate=%d sample_width=%d n_channels=%d",
stream->rate, stream->sample_width, stream->n_channels);
break;
}
case GST_RMDEMUX_STREAM_FILEINFO:
{
int element_nb;
/* Length of this section */
GST_DEBUG_OBJECT (rmdemux, "length2: 0x%08x",
RMDEMUX_GUINT32_GET (data + offset));
offset += 4;
/* Unknown : 00 00 00 00 */
offset += 4;
/* Number of variables that would follow (loop iterations) */
element_nb = RMDEMUX_GUINT32_GET (data + offset);
offset += 4;
while (element_nb) {
/* Category Id : 00 00 00 XX 00 00 */
offset += 6;
/* Variable Name */
offset += re_skip_pascal_string (data + offset);
/* Variable Value Type */
/* 00 00 00 00 00 => integer/boolean, preceded by length */
/* 00 00 00 02 00 => pascal string, preceded by length, no trailing \0 */
offset += 5;
/* Variable Value */
offset += re_skip_pascal_string (data + offset);
element_nb--;
}
}
break;
case GST_RMDEMUX_STREAM_UNKNOWN:
default:
break;
}
gst_rmdemux_add_stream (rmdemux, stream);
}
static void
gst_rmdemux_parse_indx (GstRMDemux * rmdemux, const void *data, int length)
{
int offset;
int n;
int i;
int id;
GstRMDemuxIndex *index;
GstRMDemuxStream *stream;
n = RMDEMUX_GUINT32_GET (data);
id = RMDEMUX_GUINT16_GET (data + 4);
stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
if (stream == NULL)
return;
index = g_malloc (sizeof (GstRMDemuxIndex) * n);
stream->index = index;
stream->index_length = n;
offset = 8;
for (i = 0; i < n; i++) {
index[i].unknown = RMDEMUX_GUINT16_GET (data + offset + 0);
index[i].offset = RMDEMUX_GUINT32_GET (data + offset + 2);
index[i].timestamp = RMDEMUX_GUINT32_GET (data + offset + 6);
index[i].frame = RMDEMUX_GUINT32_GET (data + offset + 10);
offset += 14;
}
}
static void
gst_rmdemux_parse_data (GstRMDemux * rmdemux, const void *data, int length)
{
rmdemux->n_chunks = RMDEMUX_GUINT32_GET (data);
rmdemux->chunk_index = 0;
GST_DEBUG_OBJECT (rmdemux, "Data chunk found with %d packets",
rmdemux->n_chunks);
}
static void
gst_rmdemux_parse_cont (GstRMDemux * rmdemux, const void *data, int length)
{
gchar *title = (gchar *) re_get_pascal_string (data);
GST_DEBUG_OBJECT (rmdemux, "File Content : (CONT) %s", title);
g_free (title);
}
static void
gst_rmdemux_parse_packet (GstRMDemux * rmdemux, const void *data,
guint16 version, guint16 length)
{
guint16 id;
guint32 timestamp;
GstRMDemuxStream *stream;
GstBuffer *buffer;
guint16 packet_size;
id = RMDEMUX_GUINT16_GET (data);
timestamp = RMDEMUX_GUINT32_GET (data + 2);
GST_DEBUG_OBJECT (rmdemux, "Parsing a packet for stream %d timestamp %d", id,
timestamp);
if (version == 0) {
data += 8;
packet_size = length - 12;
} else {
data += 9;
packet_size = length - 13;
}
stream = gst_rmdemux_get_stream_by_id (rmdemux, id);
if (gst_pad_alloc_buffer (stream->pad, GST_BUFFER_OFFSET_NONE,
packet_size, stream->caps, &buffer) != GST_FLOW_OK) {
GST_WARNING_OBJECT (rmdemux, "failed to alloc src buffer for stream %d",
id);
return;
}
memcpy (GST_BUFFER_DATA (buffer), (guint8 *) data, packet_size);
GST_BUFFER_TIMESTAMP (buffer) = GST_SECOND * timestamp / 1000;
if (stream && stream->pad && GST_PAD_IS_USABLE (stream->pad)) {
GST_DEBUG_OBJECT (rmdemux, "Pushing buffer of size %d to pad", packet_size);
gst_pad_push (stream->pad, buffer);
}
}