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gstreamer/gst/avi/gstavimux.c
Ronald S. Bultje 85f9831b2f add some extra checking on validity of pads before using them 
Original commit message from CVS:
add some extra checking on validity of pads before using them
2003-01-31 23:42:58 +00:00

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/* AVI muxer plugin for GStreamer
* Copyright (C) 2002 Ronald Bultje <rbultje@ronald.bitfreak.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.
*/
/* based on:
* - the old avimuxer (by Wim Taymans)
* - xawtv's aviwriter (by Gerd Knorr)
* - mjpegtools' avilib (by Rainer Johanni)
* - openDML large-AVI docs
*/
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include <gst/video/video.h>
#include "gstavimux.h"
#ifndef LE_FROM_GUINT16
#define LE_FROM_GUINT16 GUINT16_FROM_LE
#endif
#ifndef LE_FROM_GUINT32
#define LE_FROM_GUINT32 GUINT32_FROM_LE
#endif
/* elementfactory information */
static GstElementDetails
gst_avimux_details =
{
"Avi multiplexer",
"Codec/Muxer",
"LGPL",
"Muxes audio and video into an avi stream",
VERSION,
"Ronald Bultje <rbultje@ronald.bitfreak.net>",
"(C) 2002",
};
/* AviMux signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_BIGFILE,
};
GST_PAD_TEMPLATE_FACTORY (src_factory,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"avimux_src_video",
"video/avi",
NULL
)
)
GST_PAD_TEMPLATE_FACTORY (video_sink_factory,
"video_%d",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_CAPS_NEW (
"avimux_sink_video",
"video/avi",
"format", GST_PROPS_STRING ("strf_vids")
),
GST_CAPS_NEW (
"avimux_sink_video",
"video/raw",
"format", GST_PROPS_LIST (
GST_PROPS_FOURCC (GST_MAKE_FOURCC('Y','U','Y','2')),
GST_PROPS_FOURCC (GST_MAKE_FOURCC('I','4','2','0')),
GST_PROPS_FOURCC (GST_MAKE_FOURCC('Y','4','1','P'))
),
"width", GST_PROPS_INT_RANGE (16, 4096),
"height", GST_PROPS_INT_RANGE (16, 4096)
),
GST_CAPS_NEW (
"avimux_sink_video",
"video/raw",
"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC('R','G','B',' ')),
"width", GST_PROPS_INT_RANGE (16, 4096),
"height", GST_PROPS_INT_RANGE (16, 4096),
"depth", GST_PROPS_LIST(
GST_PROPS_INT(16),
GST_PROPS_INT(16),
GST_PROPS_INT(24),
GST_PROPS_INT(32)
),
"bpp", GST_PROPS_LIST(
GST_PROPS_INT(15),
GST_PROPS_INT(16),
GST_PROPS_INT(24),
GST_PROPS_INT(32)
)
),
GST_CAPS_NEW (
"avimux_sink_video",
"video/jpeg",
"width", GST_PROPS_INT_RANGE (16, 4096),
"height", GST_PROPS_INT_RANGE (16, 4096)
)
)
GST_PAD_TEMPLATE_FACTORY (audio_sink_factory,
"audio_%d",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_CAPS_NEW (
"avimux_sink_audio",
"video/avi",
"format", GST_PROPS_STRING ("strf_auds")
),
GST_CAPS_NEW (
"avimux_sink_audio",
"audio/raw",
"format", GST_PROPS_STRING ("int"),
"law", GST_PROPS_INT (0),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_LIST (
GST_PROPS_BOOLEAN (TRUE),
GST_PROPS_BOOLEAN (FALSE)
),
"width", GST_PROPS_LIST (
GST_PROPS_INT (8),
GST_PROPS_INT (16)
),
"depth", GST_PROPS_LIST (
GST_PROPS_INT (8),
GST_PROPS_INT (16)
),
"rate", GST_PROPS_INT_RANGE (1000, 48000),
"channels", GST_PROPS_INT_RANGE (1, 2)
),
GST_CAPS_NEW (
"avimux_sink_audio",
"audio/x-mp3",
NULL
),
GST_CAPS_NEW (
"avimux_sink_audio",
"application/x-ogg",
NULL
)
)
static void gst_avimux_class_init (GstAviMuxClass *klass);
static void gst_avimux_init (GstAviMux *avimux);
static void gst_avimux_loop (GstElement *element);
static gboolean gst_avimux_handle_event (GstPad *pad,
GstEvent *event);
static GstPad* gst_avimux_request_new_pad (GstElement *element,
GstPadTemplate *templ,
const gchar *name);
static void gst_avimux_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gst_avimux_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static GstElementStateReturn gst_avimux_change_state (GstElement *element);
static GstElementClass *parent_class = NULL;
/*static guint gst_avimux_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_avimux_get_type (void)
{
static GType avimux_type = 0;
if (!avimux_type) {
static const GTypeInfo avimux_info = {
sizeof(GstAviMuxClass),
NULL,
NULL,
(GClassInitFunc)gst_avimux_class_init,
NULL,
NULL,
sizeof(GstAviMux),
0,
(GInstanceInitFunc)gst_avimux_init,
};
avimux_type = g_type_register_static(GST_TYPE_ELEMENT, "GstAviMux", &avimux_info, 0);
}
return avimux_type;
}
static void
gst_avimux_class_init (GstAviMuxClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BIGFILE,
g_param_spec_boolean("bigfile","Bigfile Support","Whether to capture large or small AVI files",
0,G_PARAM_READWRITE));
gstelement_class->request_new_pad = gst_avimux_request_new_pad;
gstelement_class->change_state = gst_avimux_change_state;
gstelement_class->get_property = gst_avimux_get_property;
gstelement_class->set_property = gst_avimux_set_property;
}
static const GstEventMask *
gst_avimux_get_event_masks (GstPad *pad)
{
static const GstEventMask gst_avimux_src_event_masks[] = {
{ GST_EVENT_NEW_MEDIA, 0 },
{ 0, }
};
static const GstEventMask gst_avimux_sink_event_masks[] = {
{ GST_EVENT_EOS, 0 },
{ 0, }
};
if (GST_PAD_IS_SRC(pad))
return gst_avimux_src_event_masks;
else
return gst_avimux_sink_event_masks;
}
static void
gst_avimux_init (GstAviMux *avimux)
{
avimux->srcpad = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (src_factory), "src");
gst_element_add_pad (GST_ELEMENT (avimux), avimux->srcpad);
GST_FLAG_SET (GST_ELEMENT(avimux), GST_ELEMENT_EVENT_AWARE);
gst_pad_set_event_function(avimux->srcpad, gst_avimux_handle_event);
gst_pad_set_event_mask_function(avimux->srcpad, gst_avimux_get_event_masks);
avimux->audiosinkpad = NULL;
avimux->audio_pad_connected = FALSE;
avimux->videosinkpad = NULL;
avimux->video_pad_connected = FALSE;
avimux->audio_buffer_queue = NULL;
avimux->video_buffer_queue = NULL;
avimux->num_frames = 0;
/* audio/video/AVI header initialisation */
memset(&(avimux->avi_hdr),0,sizeof(gst_riff_avih));
memset(&(avimux->vids_hdr),0,sizeof(gst_riff_strh));
memset(&(avimux->vids),0,sizeof(gst_riff_strf_vids));
memset(&(avimux->auds_hdr),0,sizeof(gst_riff_strh));
memset(&(avimux->auds),0,sizeof(gst_riff_strf_auds));
avimux->vids_hdr.type = GST_MAKE_FOURCC('v','i','d','s');
avimux->vids_hdr.rate = 1000000;
avimux->auds_hdr.type = GST_MAKE_FOURCC('a','u','d','s');
avimux->idx = NULL;
avimux->write_header = TRUE;
avimux->enable_large_avi = TRUE;
avimux->framerate = 0;
gst_element_set_loop_function(GST_ELEMENT(avimux), gst_avimux_loop);
}
static GstPadLinkReturn
gst_avimux_sinkconnect (GstPad *pad, GstCaps *vscaps)
{
GstAviMux *avimux;
GstCaps *caps;
avimux = GST_AVIMUX (gst_pad_get_parent (pad));
/* we are not going to act on variable caps */
if (!GST_CAPS_IS_FIXED (vscaps))
return GST_PAD_LINK_DELAYED;
GST_DEBUG (0, "avimux: sinkconnect triggered on %s", gst_pad_get_name (pad));
for (caps = vscaps; caps != NULL; caps = vscaps = vscaps->next)
{
const gchar* mimetype = gst_caps_get_mime(caps);
if (!strcmp (mimetype, "video/avi"))
{
const gchar* format;
gst_caps_get_string (caps, "format", &format);
if (!strncmp (format, "strf_vids", 9)) {
avimux->vids.size = sizeof(gst_riff_strf_vids);
gst_caps_get (caps,
"width", &avimux->vids.width,
"height", &avimux->vids.height,
"planes", &avimux->vids.planes,
"bit_cnt", &avimux->vids.bit_cnt,
"compression", &avimux->vids.compression,
"image_size", &avimux->vids.image_size,
"xpels_meter", &avimux->vids.xpels_meter,
"ypels_meter", &avimux->vids.ypels_meter,
"num_colors", &avimux->vids.num_colors,
"imp_colors", &avimux->vids.imp_colors,
NULL);
avimux->vids_hdr.fcc_handler = avimux->vids.compression;
avimux->avi_hdr.width = avimux->vids.width;
avimux->avi_hdr.height = avimux->vids.height;
goto done;
}
else if (!strncmp (format, "strf_auds", 9)) {
gst_caps_get (caps,
"format", &avimux->auds.format,
"channels", &avimux->auds.channels,
"rate", &avimux->auds.rate,
"av_bps", &avimux->auds.av_bps,
"blockalign", &avimux->auds.blockalign,
"size", &avimux->auds.size,
NULL);
avimux->auds_hdr.samplesize = avimux->auds_hdr.scale = avimux->auds.blockalign;
avimux->auds_hdr.rate = avimux->auds.av_bps;
goto done;
}
}
else if (!strcmp (mimetype, "video/raw"))
{
guint32 format;
gint temp;
gst_caps_get_fourcc_int (caps, "format", &format);
switch (format)
{
case GST_MAKE_FOURCC('Y','U','Y','2'):
case GST_MAKE_FOURCC('I','4','2','0'):
case GST_MAKE_FOURCC('Y','4','1','P'):
case GST_MAKE_FOURCC('R','G','B',' '):
avimux->vids.size = sizeof(gst_riff_strf_vids);
gst_caps_get (caps, "width", &avimux->vids.width,
"height", &avimux->vids.height, NULL);
avimux->vids.planes = 1;
switch (format)
{
case GST_MAKE_FOURCC('Y','U','Y','2'):
avimux->vids.bit_cnt = 16; /* YUY2 */
break;
case GST_MAKE_FOURCC('R','G','B',' '):
gst_caps_get_int (caps, "bpp", &temp); /* RGB */
avimux->vids.bit_cnt = temp;
break;
case GST_MAKE_FOURCC('Y','4','1','P'):
case GST_MAKE_FOURCC('I','4','2','0'):
avimux->vids.bit_cnt = 12; /* Y41P or I420 */
break;
}
gst_caps_get_fourcc_int(caps, "format", &avimux->vids.compression);
avimux->vids_hdr.fcc_handler = avimux->vids.compression;
avimux->vids.image_size = avimux->vids.height * avimux->vids.width;
avimux->avi_hdr.width = avimux->vids.width;
avimux->avi_hdr.height = avimux->vids.height;
goto done;
default:
break;
}
}
else if (!strcmp (mimetype, "video/jpeg"))
{
avimux->vids.size = sizeof(gst_riff_strf_vids);
gst_caps_get (caps, "width", &avimux->vids.width,
"height", &avimux->vids.height, NULL);
avimux->vids.planes = 1;
avimux->vids.bit_cnt = 24;
avimux->vids_hdr.fcc_handler = avimux->vids.compression = GST_MAKE_FOURCC('M','J','P','G');
avimux->avi_hdr.width = avimux->vids.width;
avimux->avi_hdr.height = avimux->vids.height;
avimux->vids.image_size = avimux->vids.height * avimux->vids.width;
goto done;
}
else if (!strcmp (mimetype, "audio/raw"))
{
gint width;
avimux->auds.format = GST_RIFF_WAVE_FORMAT_PCM;
gst_caps_get (caps, "channels", &avimux->auds.channels,
"rate", &avimux->auds.rate,
"width", &width,
"depth", &avimux->auds.size,
NULL);
avimux->auds_hdr.rate = avimux->auds.av_bps = width * avimux->auds.rate * avimux->auds.channels / 8;
avimux->auds_hdr.samplesize = avimux->auds_hdr.scale = avimux->auds.blockalign = width * avimux->auds.channels/8;
goto done;
}
else if (!strcmp (mimetype, "audio/x-mp3"))
{
gint layer;
gst_caps_get_int(caps, "layer", &layer);
/* we don't need to do anything here, compressed mp3 contains it all */
avimux->auds.format = (layer == 3?
GST_RIFF_WAVE_FORMAT_MPEGL3 :
GST_RIFF_WAVE_FORMAT_MPEGL12);
goto done;
}
else if (!strcmp (mimetype, "application/x-ogg"))
{
avimux->auds.format = GST_RIFF_WAVE_FORMAT_VORBIS1;
goto done;
}
}
return GST_PAD_LINK_REFUSED;
done:
return GST_PAD_LINK_OK;
}
static void
gst_avimux_pad_link (GstPad *pad,
GstPad *peer,
gpointer data)
{
GstAviMux *avimux = GST_AVIMUX(data);
const gchar *padname = gst_pad_get_name (pad);
if (pad == avimux->audiosinkpad)
{
avimux->audio_pad_connected = TRUE;
}
else if (pad == avimux->videosinkpad)
{
avimux->video_pad_connected = TRUE;
}
else
{
g_warning("Unknown padname '%s'", padname);
return;
}
GST_DEBUG(GST_CAT_PLUGIN_INFO, "pad '%s' connected", padname);
}
static void
gst_avimux_pad_unlink (GstPad *pad,
GstPad *peer,
gpointer data)
{
GstAviMux *avimux = GST_AVIMUX(data);
const gchar *padname = gst_pad_get_name (pad);
if (pad == avimux->audiosinkpad)
{
avimux->audio_pad_connected = FALSE;
avimux->audiosinkpad = NULL;
}
else if (pad == avimux->videosinkpad)
{
avimux->video_pad_connected = FALSE;
avimux->videosinkpad = NULL;
}
else
{
g_warning("Unknown padname '%s'", padname);
return;
}
GST_DEBUG(GST_CAT_PLUGIN_INFO, "pad '%s' unlinked", padname);
/* is this allowed? */
gst_pad_destroy(pad);
}
static GstPad*
gst_avimux_request_new_pad (GstElement *element,
GstPadTemplate *templ,
const gchar *req_name)
{
GstAviMux *avimux;
GstPad *newpad;
g_return_val_if_fail (templ != NULL, NULL);
if (templ->direction != GST_PAD_SINK) {
g_warning ("avimux: request pad that is not a SINK pad\n");
return NULL;
}
g_return_val_if_fail (GST_IS_AVIMUX (element), NULL);
avimux = GST_AVIMUX (element);
if (templ == GST_PAD_TEMPLATE_GET (audio_sink_factory)) {
g_return_val_if_fail(avimux->audiosinkpad == NULL, NULL);
newpad = gst_pad_new_from_template (templ, "audio_00");
avimux->audiosinkpad = newpad;
}
else if (templ == GST_PAD_TEMPLATE_GET (video_sink_factory)) {
g_return_val_if_fail(avimux->videosinkpad == NULL, NULL);
newpad = gst_pad_new_from_template (templ, "video_00");
avimux->videosinkpad = newpad;
}
else {
g_warning ("avimux: this is not our template!\n");
return NULL;
}
g_signal_connect(newpad, "linked",
G_CALLBACK(gst_avimux_pad_link), (gpointer)avimux);
g_signal_connect(newpad, "unlinked",
G_CALLBACK(gst_avimux_pad_unlink), (gpointer)avimux);
gst_pad_set_link_function (newpad, gst_avimux_sinkconnect);
gst_element_add_pad (element, newpad);
gst_pad_set_event_function(newpad, gst_avimux_handle_event);
gst_pad_set_event_mask_function(newpad, gst_avimux_get_event_masks);
return newpad;
}
/* maybe some of these functions should be moved to riff.h? */
/* DISCLAIMER: this function is ugly. So be it (i.e. it makes the rest easier) */
static GstBuffer *
gst_avimux_riff_get_avi_header (GstAviMux *avimux)
{
GstBuffer *buffer;
guint8 *buffdata;
guint16 temp16;
guint32 temp32;
buffer = gst_buffer_new();
/* first, let's see what actually needs to be in the buffer */
GST_BUFFER_SIZE(buffer) = 0;
GST_BUFFER_SIZE(buffer) += 32 + sizeof(gst_riff_avih); /* avi header */
if (avimux->video_pad_connected)
{ /* we have video */
GST_BUFFER_SIZE(buffer) += 28 + sizeof(gst_riff_strh) + sizeof(gst_riff_strf_vids); /* vid hdr */
GST_BUFFER_SIZE(buffer) += 24; /* odml header */
}
if (avimux->audio_pad_connected)
{ /* we have audio */
GST_BUFFER_SIZE(buffer) += 28 + sizeof(gst_riff_strh) + sizeof(gst_riff_strf_auds); /* aud hdr */
}
/* this is the "riff size" */
avimux->header_size = GST_BUFFER_SIZE(buffer);
GST_BUFFER_SIZE(buffer) += 12; /* avi data header */
/* allocate the buffer */
buffdata = GST_BUFFER_DATA(buffer) = g_malloc(GST_BUFFER_SIZE(buffer));
/* avi header metadata */
memcpy(buffdata, "RIFF", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->header_size + avimux->idx_size + avimux->data_size);
memcpy(buffdata, &temp32, 4); buffdata += 4;
memcpy(buffdata, "AVI ", 4); buffdata += 4;
memcpy(buffdata, "LIST", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->header_size - 4*5);
memcpy(buffdata, &temp32, 4); buffdata += 4;
memcpy(buffdata, "hdrl", 4); buffdata += 4;
memcpy(buffdata, "avih", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(sizeof(gst_riff_avih));
memcpy(buffdata, &temp32, 4); buffdata += 4;
/* the AVI header itself */
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.us_frame);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.max_bps);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.pad_gran);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.flags);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.tot_frames);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.init_frames);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.streams);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.bufsize);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.width);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.height);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.scale);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.rate);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.start);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->avi_hdr.length);
memcpy(buffdata, &temp32, 4); buffdata += 4;
if (avimux->video_pad_connected)
{
/* video header metadata */
memcpy(buffdata, "LIST", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(sizeof(gst_riff_strh) + sizeof(gst_riff_strf_vids) + 4*5);
memcpy(buffdata, &temp32, 4); buffdata += 4;
memcpy(buffdata, "strl", 4); buffdata += 4;
/* generic header */
memcpy(buffdata, "strh", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(sizeof(gst_riff_strh));
memcpy(buffdata, &temp32, 4); buffdata += 4;
/* the actual header */
temp32 = LE_FROM_GUINT32(avimux->vids_hdr.type);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids_hdr.fcc_handler);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids_hdr.flags);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids_hdr.priority);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids_hdr.init_frames);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids_hdr.scale);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids_hdr.rate);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids_hdr.start);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids_hdr.length);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids_hdr.bufsize);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids_hdr.quality);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids_hdr.samplesize);
memcpy(buffdata, &temp32, 4); buffdata += 4;
/* the video header */
memcpy(buffdata, "strf", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(sizeof(gst_riff_strf_vids));
memcpy(buffdata, &temp32, 4); buffdata += 4;
/* the actual header */
temp32 = LE_FROM_GUINT32(avimux->vids.size);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids.width);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids.height);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp16 = LE_FROM_GUINT16(avimux->vids.planes);
memcpy(buffdata, &temp16, 2); buffdata += 2;
temp16 = LE_FROM_GUINT16(avimux->vids.bit_cnt);
memcpy(buffdata, &temp16, 2); buffdata += 2;
temp32 = LE_FROM_GUINT32(avimux->vids.compression);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids.image_size);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids.xpels_meter);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids.ypels_meter);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids.num_colors);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->vids.imp_colors);
memcpy(buffdata, &temp32, 4); buffdata += 4;
}
if (avimux->audio_pad_connected)
{
/* audio header */
memcpy(buffdata, "LIST", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(sizeof(gst_riff_strh) + sizeof(gst_riff_strf_auds) + 4*5);
memcpy(buffdata, &temp32, 4); buffdata += 4;
memcpy(buffdata, "strl", 4); buffdata += 4;
/* generic header */
memcpy(buffdata, "strh", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(sizeof(gst_riff_strh));
memcpy(buffdata, &temp32, 4); buffdata += 4;
/* the actual header */
temp32 = LE_FROM_GUINT32(avimux->auds_hdr.type);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->auds_hdr.fcc_handler);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->auds_hdr.flags);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->auds_hdr.priority);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->auds_hdr.init_frames);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->auds_hdr.scale);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->auds_hdr.rate);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->auds_hdr.start);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->auds_hdr.length);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->auds_hdr.bufsize);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->auds_hdr.quality);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->auds_hdr.samplesize);
memcpy(buffdata, &temp32, 4); buffdata += 4;
/* the audio header */
memcpy(buffdata, "strf", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(sizeof(gst_riff_strf_auds));
memcpy(buffdata, &temp32, 4); buffdata += 4;
/* the actual header */
temp16 = LE_FROM_GUINT16(avimux->auds.format);
memcpy(buffdata, &temp16, 2); buffdata += 2;
temp16 = LE_FROM_GUINT16(avimux->auds.channels);
memcpy(buffdata, &temp16, 2); buffdata += 2;
temp32 = LE_FROM_GUINT32(avimux->auds.rate);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->auds.av_bps);
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp16 = LE_FROM_GUINT16(avimux->auds.blockalign);
memcpy(buffdata, &temp16, 2); buffdata += 2;
temp16 = LE_FROM_GUINT16(avimux->auds.size);
memcpy(buffdata, &temp16, 2); buffdata += 2;
}
if (avimux->video_pad_connected)
{
/* odml header */
memcpy(buffdata, "LIST", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(sizeof(guint32)+4*3);
memcpy(buffdata, &temp32, 4); buffdata += 4;
memcpy(buffdata, "odml", 4); buffdata += 4;
memcpy(buffdata, "dmlh", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(sizeof(guint32));
memcpy(buffdata, &temp32, 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->total_frames);
memcpy(buffdata, &temp32, 4); buffdata += 4;
}
/* avi data header */
memcpy(buffdata, "LIST", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(avimux->data_size);
memcpy(buffdata, &temp32, 4); buffdata += 4;
memcpy(buffdata, "movi", 4);
return buffer;
}
static GstBuffer *
gst_avimux_riff_get_avix_header (guint32 datax_size)
{
GstBuffer *buffer;
guint8 *buffdata;
guint32 temp32;
buffer = gst_buffer_new();
GST_BUFFER_SIZE(buffer) = 24;
buffdata = GST_BUFFER_DATA(buffer) = g_malloc(GST_BUFFER_SIZE(buffer));
memcpy(buffdata, "LIST", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(datax_size+4*4);
memcpy(buffdata, &temp32, 4); buffdata += 4;
memcpy(buffdata, "AVIX", 4); buffdata += 4;
memcpy(buffdata, "LIST", 4); buffdata += 4;
temp32 = LE_FROM_GUINT32(datax_size);
memcpy(buffdata, &temp32, 4); buffdata += 4;
memcpy(buffdata, "movi", 4);
return buffer;
}
static GstBuffer *
gst_avimux_riff_get_video_header (guint32 video_frame_size)
{
GstBuffer *buffer;
guint32 temp32;
buffer = gst_buffer_new();
GST_BUFFER_DATA(buffer) = g_malloc(8);
GST_BUFFER_SIZE(buffer) = 8;
memcpy(GST_BUFFER_DATA(buffer), "00db", 4);
temp32 = LE_FROM_GUINT32(video_frame_size);
memcpy(GST_BUFFER_DATA(buffer)+4, &temp32, 4);
return buffer;
}
static GstBuffer *
gst_avimux_riff_get_audio_header (guint32 audio_sample_size)
{
GstBuffer *buffer;
guint32 temp32;
buffer = gst_buffer_new();
GST_BUFFER_DATA(buffer) = g_malloc(8);
GST_BUFFER_SIZE(buffer) = 8;
memcpy(GST_BUFFER_DATA(buffer), "01wb", 4);
temp32 = LE_FROM_GUINT32(audio_sample_size);
memcpy(GST_BUFFER_DATA(buffer)+4, &temp32, 4);
return buffer;
}
/* some other usable functions (thankyou xawtv ;-) ) */
static void
gst_avimux_add_index (GstAviMux *avimux, guchar *code, guint32 flags, guint32 size)
{
if (avimux->idx_index == avimux->idx_count)
{
avimux->idx_count += 256;
avimux->idx = realloc(avimux->idx, avimux->idx_count*sizeof(gst_riff_index_entry));
}
memcpy(&(avimux->idx[avimux->idx_index].id), code, 4);
avimux->idx[avimux->idx_index].flags = LE_FROM_GUINT32(flags);
avimux->idx[avimux->idx_index].offset = LE_FROM_GUINT32(avimux->idx_offset);
avimux->idx[avimux->idx_index].size = LE_FROM_GUINT32(size);
avimux->idx_index++;
avimux->idx_offset += size;
}
static void
gst_avimux_write_index (GstAviMux *avimux)
{
GstBuffer *buffer;
guint32 temp32;
buffer = gst_buffer_new();
GST_BUFFER_SIZE(buffer) = 8;
GST_BUFFER_DATA(buffer) = g_malloc(8);
memcpy(GST_BUFFER_DATA(buffer), "idx1", 4);
temp32 = LE_FROM_GUINT32(avimux->idx_index * sizeof(gst_riff_index_entry));
memcpy(GST_BUFFER_DATA(buffer)+4, &temp32, 4);
gst_pad_push(avimux->srcpad, buffer);
buffer = gst_buffer_new();
GST_BUFFER_SIZE(buffer) = avimux->idx_index * sizeof(gst_riff_index_entry);
GST_BUFFER_DATA(buffer) = (unsigned char*) avimux->idx;
avimux->idx = NULL; /* will be free()'ed by gst_buffer_unref() */
avimux->total_data += GST_BUFFER_SIZE(buffer);
gst_pad_push(avimux->srcpad, buffer);
avimux->idx_size += avimux->idx_index * sizeof(gst_riff_index_entry) + 8;
/* update header */
avimux->avi_hdr.flags |= GST_RIFF_AVIH_HASINDEX;
}
static void
gst_avimux_bigfile(GstAviMux *avimux, gboolean last)
{
GstBuffer *header;
GstEvent *event;
if (avimux->is_bigfile)
{
/* sarch back */
event = gst_event_new_seek (GST_FORMAT_BYTES |
GST_SEEK_METHOD_SET |
GST_SEEK_FLAG_FLUSH,
avimux->avix_start);
/* if the event succeeds */
if (gst_pad_send_event(GST_PAD_PEER(avimux->srcpad), event)) {
/* rewrite AVIX header */
header = gst_avimux_riff_get_avix_header(avimux->datax_size);
gst_pad_push(avimux->srcpad, header);
/* go back to current location */
event = gst_event_new_seek (GST_FORMAT_BYTES |
GST_SEEK_METHOD_SET |
GST_SEEK_FLAG_FLUSH,
avimux->total_data);
gst_pad_send_event(GST_PAD_PEER(avimux->srcpad), event);
}
}
avimux->avix_start = avimux->total_data;
if (last)
return;
avimux->is_bigfile = TRUE;
avimux->numx_frames = 0;
avimux->datax_size = 0;
header = gst_avimux_riff_get_avix_header(0);
avimux->total_data += GST_BUFFER_SIZE(header);
gst_pad_push(avimux->srcpad, header);
}
/* enough header blabla now, let's go on to actually writing the headers */
static void
gst_avimux_start_file (GstAviMux *avimux)
{
GstBuffer *header;
avimux->total_data = 0;
avimux->total_frames = 0;
avimux->data_size = 4; /* ? */
avimux->datax_size = 0;
avimux->num_frames = 0;
avimux->numx_frames = 0;
avimux->audio_size = 0;
avimux->avix_start = 0;
avimux->idx_index = 0;
avimux->idx_offset = 0; /* see 10 lines below */
avimux->idx_size = 0;
avimux->idx_count = 0;
avimux->idx = NULL;
/* header */
avimux->avi_hdr.streams = (avimux->video_pad_connected?1:0) + (avimux->audio_pad_connected?1:0);
avimux->is_bigfile = FALSE;
header = gst_avimux_riff_get_avi_header(avimux);
avimux->idx_offset = avimux->header_size + 12;
avimux->total_data += GST_BUFFER_SIZE(header);
gst_pad_push(avimux->srcpad, header);
avimux->write_header = FALSE;
avimux->restart = FALSE;
}
static void
gst_avimux_stop_file (GstAviMux *avimux)
{
GstEvent *event;
GstBuffer *header;
/* if bigfile, rewrite header, else write indexes */
if (avimux->video_pad_connected)
{
if (avimux->is_bigfile)
{
gst_avimux_bigfile(avimux, TRUE);
avimux->idx_size = 0;
}
else
{
gst_avimux_write_index(avimux);
}
}
/* statistics/total_frames/... */
avimux->avi_hdr.tot_frames = avimux->num_frames;
if (avimux->video_pad_connected)
avimux->vids_hdr.length = avimux->num_frames;
if (avimux->audio_pad_connected)
{
if (avimux->auds_hdr.scale)
avimux->auds_hdr.length = avimux->audio_size/avimux->auds_hdr.scale;
else
avimux->auds_hdr.length = 0; /* urm...? FIXME! ;-) */
}
/* set rate and everything having to do with that */
avimux->avi_hdr.us_frame = avimux->vids_hdr.scale = 1000000/avimux->framerate;
avimux->avi_hdr.max_bps = 0;
if (avimux->audio_pad_connected)
avimux->avi_hdr.max_bps += avimux->auds.av_bps;
if (avimux->video_pad_connected)
avimux->avi_hdr.max_bps += ((avimux->vids.bit_cnt+7)/8) *
avimux->framerate *
avimux->vids.image_size;
/* seek and rewrite the header */
header = gst_avimux_riff_get_avi_header(avimux);
event = gst_event_new_seek (GST_FORMAT_BYTES |
GST_SEEK_METHOD_SET |
GST_SEEK_FLAG_FLUSH, 0);
gst_pad_send_event(GST_PAD_PEER(avimux->srcpad), event);
gst_pad_push(avimux->srcpad, header);
avimux->write_header = TRUE;
}
static void
gst_avimux_restart_file (GstAviMux *avimux)
{
GstEvent *event;
gst_avimux_stop_file(avimux);
event = gst_event_new(GST_EVENT_NEW_MEDIA);
gst_pad_send_event(avimux->srcpad, event);
gst_avimux_start_file(avimux);
}
/* handle events (search) */
static gboolean
gst_avimux_handle_event (GstPad *pad, GstEvent *event)
{
GstAviMux *avimux;
GstEventType type;
avimux = GST_AVIMUX (gst_pad_get_parent (pad));
type = event ? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN;
switch (type) {
case GST_EVENT_NEW_MEDIA:
avimux->restart = TRUE;
break;
case GST_EVENT_EOS:
/* is this allright? */
if (pad == avimux->videosinkpad)
avimux->video_pad_eos = TRUE;
else if (pad == avimux->audiosinkpad)
avimux->audio_pad_eos = TRUE;
else
g_warning("Unknown pad for EOS!");
break;
default:
break;
}
return TRUE;
}
/* fill the internal queue for each available pad */
static void
gst_avimux_fill_queue (GstAviMux *avimux)
{
GstBuffer *buffer;
if (!avimux->audio_buffer_queue &&
avimux->audiosinkpad &&
avimux->audio_pad_connected &&
GST_PAD_IS_USABLE(avimux->audiosinkpad) &&
!avimux->audio_pad_eos)
{
while (1)
{
buffer = gst_pad_pull(avimux->audiosinkpad);
if (GST_IS_EVENT(buffer))
{
gst_avimux_handle_event(avimux->audiosinkpad, GST_EVENT(buffer));
}
else
{
avimux->audio_buffer_queue = buffer;
break;
}
}
}
if (!avimux->video_buffer_queue &&
avimux->videosinkpad &&
avimux->video_pad_connected &&
GST_PAD_IS_USABLE(avimux->videosinkpad) &&
!avimux->video_pad_eos)
{
while (1)
{
buffer = gst_pad_pull(avimux->videosinkpad);
if (GST_IS_EVENT(buffer))
{
gst_avimux_handle_event(avimux->videosinkpad, GST_EVENT(buffer));
}
else
{
avimux->video_buffer_queue = buffer;
if (avimux->framerate < 0)
avimux->framerate = gst_video_frame_rate(GST_PAD_PEER(avimux->videosinkpad));
break;
}
}
}
}
/* send extra 'padding' data */
static void
gst_avimux_send_pad_data (GstAviMux *avimux,
gulong num_bytes)
{
GstBuffer *buffer;
buffer = gst_buffer_new();
GST_BUFFER_SIZE(buffer) = num_bytes;
GST_BUFFER_DATA(buffer) = g_malloc(num_bytes);
memset(GST_BUFFER_DATA(buffer), 0, num_bytes);
gst_pad_push(avimux->srcpad, buffer);
}
/* do audio buffer */
static void
gst_avimux_do_audio_buffer (GstAviMux *avimux)
{
GstBuffer *data = avimux->audio_buffer_queue, *header;
gulong total_size, pad_bytes;
/* write a audio header + index entry */
header = gst_avimux_riff_get_audio_header((GST_BUFFER_SIZE(data)+3)&~3);
total_size = GST_BUFFER_SIZE(header) + GST_BUFFER_SIZE(data);
avimux->total_data += total_size;
if (avimux->is_bigfile)
{
avimux->datax_size += total_size;
}
else
{
avimux->data_size += total_size;
avimux->audio_size += GST_BUFFER_SIZE(data);
gst_avimux_add_index(avimux, "01wb", 0x0, total_size);
}
gst_pad_push(avimux->srcpad, header);
pad_bytes = ((GST_BUFFER_SIZE(data)+3)&~3) - GST_BUFFER_SIZE(data);
if (pad_bytes)
if (GST_BUFFER_MAXSIZE(data) >= GST_BUFFER_SIZE(data) + pad_bytes)
{
GST_BUFFER_SIZE(data) += pad_bytes;
pad_bytes = 0;
}
gst_pad_push(avimux->srcpad, data);
if (pad_bytes)
gst_avimux_send_pad_data(avimux, pad_bytes);
avimux->audio_buffer_queue = NULL;
}
/* do video buffer */
static void
gst_avimux_do_video_buffer (GstAviMux *avimux)
{
GstBuffer *data = avimux->video_buffer_queue, *header;
gulong total_size, pad_bytes;
if (avimux->restart)
gst_avimux_restart_file(avimux);
/* write a video header + index entry */
if ((avimux->is_bigfile?avimux->datax_size:avimux->data_size)+GST_BUFFER_SIZE(data)>1024*1024*2000)
{
if (avimux->enable_large_avi)
gst_avimux_bigfile(avimux, FALSE);
else
gst_avimux_restart_file(avimux);
}
header = gst_avimux_riff_get_video_header((GST_BUFFER_SIZE(data)+3)&~3);
total_size = GST_BUFFER_SIZE(header) + GST_BUFFER_SIZE(data);
avimux->total_data += total_size;
avimux->total_frames++;
if (avimux->is_bigfile)
{
avimux->datax_size += total_size;
avimux->numx_frames++;
}
else
{
avimux->data_size += total_size;
avimux->num_frames++;
gst_avimux_add_index(avimux, "00db", 0x12, total_size);
}
gst_pad_push(avimux->srcpad, header);
pad_bytes = ((GST_BUFFER_SIZE(data)+3)&~3) - GST_BUFFER_SIZE(data);
if (pad_bytes)
if (GST_BUFFER_MAXSIZE(data) >= GST_BUFFER_SIZE(data) + pad_bytes)
{
GST_BUFFER_SIZE(data) += pad_bytes;
pad_bytes = 0;
}
gst_pad_push(avimux->srcpad, data);
if (pad_bytes)
gst_avimux_send_pad_data(avimux, pad_bytes);
avimux->video_buffer_queue = NULL;
}
/* take the oldest buffer in our internal queue and push-it */
static gboolean
gst_avimux_do_one_buffer (GstAviMux *avimux)
{
if (avimux->video_buffer_queue &&
avimux->audio_buffer_queue)
{
if (GST_BUFFER_TIMESTAMP(avimux->video_buffer_queue) <=
GST_BUFFER_TIMESTAMP(avimux->audio_buffer_queue))
gst_avimux_do_video_buffer(avimux);
else
gst_avimux_do_audio_buffer(avimux);
}
else if (avimux->video_buffer_queue ||
avimux->audio_buffer_queue)
{
if (avimux->video_buffer_queue)
gst_avimux_do_video_buffer(avimux);
else
gst_avimux_do_audio_buffer(avimux);
}
else
return FALSE;
return TRUE;
}
static void
gst_avimux_loop (GstElement *element)
{
GstAviMux *avimux;
avimux = GST_AVIMUX(element);
/* first fill queue (some elements only set caps when
* flowing data), then write header */
gst_avimux_fill_queue(avimux);
if (avimux->write_header)
gst_avimux_start_file(avimux);
gst_avimux_do_one_buffer(avimux);
}
static void
gst_avimux_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GstAviMux *avimux;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_AVIMUX(object));
avimux = GST_AVIMUX(object);
switch (prop_id)
{
case ARG_BIGFILE:
g_value_set_boolean(value, avimux->enable_large_avi);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_avimux_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GstAviMux *avimux;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_AVIMUX(object));
avimux = GST_AVIMUX(object);
switch (prop_id)
{
case ARG_BIGFILE:
avimux->enable_large_avi = g_value_get_boolean(value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstElementStateReturn
gst_avimux_change_state (GstElement *element)
{
GstAviMux *avimux;
gint transition = GST_STATE_TRANSITION (element);
g_return_val_if_fail(GST_IS_AVIMUX(element), GST_STATE_FAILURE);
avimux = GST_AVIMUX(element);
switch (transition) {
case GST_STATE_READY_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_PLAYING:
avimux->framerate = -1; /* means that we fill it in later */
avimux->video_pad_eos = avimux->audio_pad_eos = FALSE;
break;
case GST_STATE_PLAYING_TO_PAUSED:
/* this function returns TRUE while it handles buffers */
while (gst_avimux_do_one_buffer(avimux));
gst_avimux_stop_file(avimux);
break;
case GST_STATE_PAUSED_TO_READY:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
if (!gst_library_load("gstvideo"))
return FALSE;
/* create an elementfactory for the avimux element */
factory = gst_element_factory_new ("avimux", GST_TYPE_AVIMUX,
&gst_avimux_details);
g_return_val_if_fail (factory != NULL, FALSE);
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (src_factory));
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (audio_sink_factory));
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (video_sink_factory));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"avimux",
plugin_init
};
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