Commit c3f3fe9f authored by Andy Wingo Wingo's avatar Andy Wingo Wingo

ext/raw1394/gstdv1394src.c (gst_dv1394src_iso_receive): Note license info in...

ext/raw1394/gstdv1394src.c (gst_dv1394src_iso_receive): Note license info in the source code -- was only in the commi...

Original commit message from CVS:
2005-08-16  Andy Wingo  <wingo@pobox.com>

* ext/raw1394/gstdv1394src.c (gst_dv1394src_iso_receive): Note
license info in the source code -- was only in the commit log
before.

* ext/dv/gstdvdec.h:
* ext/dv/gstdvdec.c: Only decodes systemstream=FALSE dv video --
old pipelines using dvdec should probably have a dvdemux first.

* ext/dv/gstdvdemux.h:
* ext/dv/gstdvdemux.c: Split out from dvdec, chunks the incoming
systemstream=TRUE data into frames, sets caps data, and spits out
PCM audio in addition to systemstream=FALSE video frames. Operates
in chain mode only for now; should make a getrange version as
well.

* ext/dv/gstdv.c: New file, registers the libgstdv plugin.

* ext/dv/Makefile.am: Library name changed to libgstdv. Split
dvdec into dvdemux and dvdec.
parent 27a2fdb5
2005-08-16 Andy Wingo <wingo@pobox.com>
* ext/raw1394/gstdv1394src.c (gst_dv1394src_iso_receive): Note
license info in the source code -- was only in the commit log
before.
* ext/dv/gstdvdec.h:
* ext/dv/gstdvdec.c: Only decodes systemstream=FALSE dv video --
old pipelines using dvdec should probably have a dvdemux first.
* ext/dv/gstdvdemux.h:
* ext/dv/gstdvdemux.c: Split out from dvdec, chunks the incoming
systemstream=TRUE data into frames, sets caps data, and spits out
PCM audio in addition to systemstream=FALSE video frames. Operates
in chain mode only for now; should make a getrange version as
well.
* ext/dv/gstdv.c: New file, registers the libgstdv plugin.
* ext/dv/Makefile.am: Library name changed to libgstdv. Split
dvdec into dvdemux and dvdec.
2005-08-16 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* ext/faad/gstfaad.c: (gst_faad_event), (gst_faad_chain):
......
plugin_LTLIBRARIES = libgstdvdec.la
plugin_LTLIBRARIES = libgstdv.la
libgstdvdec_la_SOURCES = gstdvdec.c
libgstdvdec_la_CFLAGS = $(GST_CFLAGS) $(LIBDV_CFLAGS)
libgstdvdec_la_LIBADD = $(LIBDV_LIBS) $(GST_BASE_LIBS)
libgstdvdec_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) $(GST_PLUGINS_BASE_LIBS)
libgstdv_la_SOURCES = gstdv.c gstdvdec.c gstdvdemux.c
libgstdv_la_CFLAGS = $(GST_CFLAGS) $(LIBDV_CFLAGS)
libgstdv_la_LIBADD = $(LIBDV_LIBS) $(GST_BASE_LIBS)
libgstdv_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) $(GST_PLUGINS_BASE_LIBS)
noinst_HEADERS = gstdvdec.h
noinst_HEADERS = gstdvdemux.h gstdvdec.h
#if HAVE_GTK
#noinst_PROGRAMS = demo-play
......
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* <2005> Wim Taymans <wim@fluendo.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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdvdec.h"
#include "gstdvdemux.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "dvdemux", GST_RANK_PRIMARY,
gst_dvdemux_get_type ()))
return FALSE;
if (!gst_element_register (plugin, "dvdec", GST_RANK_SECONDARY,
gst_dvdec_get_type ()))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"dv",
"DV demuxer and decoder based on libdv (libdv.sf.net)",
plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN);
......@@ -24,69 +24,9 @@
#include <string.h>
#include <math.h>
/* First, include the header file for the plugin, to bring in the
* object definition and other useful things.
*/
#include "gstdvdec.h"
/* DV output has two modes, normal and wide. The resolution is the same in both
* cases: 720 pixels wide by 576 pixels tall in PAL format, and 720x480 for
* NTSC.
*
* Each of the modes has its own pixel aspect ratio, which is fixed in practice
* by ITU-R BT.601 (also known as "CCIR-601" or "Rec.601"). Or so claims a
* reference that I culled from the reliable "internet",
* http://www.mir.com/DMG/aspect.html. Normal PAL is 59/54 and normal NTSC is
* 10/11. Because the pixel resolution is the same for both cases, we can get
* the pixel aspect ratio for wide recordings by multiplying by the ratio of
* display aspect ratios, 16/9 (for wide) divided by 4/3 (for normal):
*
* Wide NTSC: 10/11 * (16/9)/(4/3) = 40/33
* Wide PAL: 59/54 * (16/9)/(4/3) = 118/81
*
* However, the pixel resolution coming out of a DV source does not combine with
* the standard pixel aspect ratios to give a proper display aspect ratio. An
* image 480 pixels tall, with a 4:3 display aspect ratio, will be 768 pixels
* wide. But, if we take the normal PAL aspect ratio of 59/54, and multiply it
* with the width of the DV image (720 pixels), we get 786.666..., which is
* nonintegral and too wide. The camera is not outputting a 4:3 image.
*
* If the video sink for this stream has fixed dimensions (such as for
* fullscreen playback, or for a java applet in a web page), you then have two
* choices. Either you show the whole image, but pad the image with black
* borders on the top and bottom (like watching a widescreen video on a 4:3
* device), or you crop the video to the proper ratio. Apparently the latter is
* the standard practice.
*
* For its part, GStreamer is concerned with accuracy and preservation of
* information. This element outputs the 720x576 or 720x480 video that it
* recieves, noting the proper aspect ratio. This should not be a problem for
* windowed applications, which can change size to fit the video. Applications
* with fixed size requirements should decide whether to crop or pad which
* an element such as videobox can do.
*/
#define NTSC_HEIGHT 480
#define NTSC_BUFFER 120000
#define NTSC_FRAMERATE 30000/1001.
#define PAL_HEIGHT 576
#define PAL_BUFFER 144000
#define PAL_FRAMERATE 25.0
#define PAL_NORMAL_PAR_X 59
#define PAL_NORMAL_PAR_Y 54
#define PAL_WIDE_PAR_X 118
#define PAL_WIDE_PAR_Y 81
#define NTSC_NORMAL_PAR_X 10
#define NTSC_NORMAL_PAR_Y 11
#define NTSC_WIDE_PAR_X 40
#define NTSC_WIDE_PAR_Y 33
/* The ElementDetails structure gives a human-readable description
* of the plugin, as well as author and version data.
*/
static GstElementDetails dvdec_details =
GST_ELEMENT_DETAILS ("DV (smpte314) decoder plugin",
"Codec/Decoder/Video",
......@@ -94,30 +34,16 @@ GST_ELEMENT_DETAILS ("DV (smpte314) decoder plugin",
"Erik Walthinsen <omega@cse.ogi.edu>," "Wim Taymans <wim@fluendo.com>");
/* These are the signals that this element can fire. They are zero-
* based because the numbers themselves are private to the object.
* LAST_SIGNAL is used for initialization of the signal array.
*/
enum
{
/* FILL ME */
LAST_SIGNAL
};
#define DV_DEFAULT_QUALITY DV_QUALITY_BEST
#define DV_DEFAULT_DECODE_NTH 1
/* Arguments are identified the same way, but cannot be zero, so you
* must leave the ARG_0 entry in as a placeholder.
*/
enum
{
ARG_0,
ARG_CLAMP_LUMA,
ARG_CLAMP_CHROMA,
ARG_QUALITY,
ARG_DECODE_NTH
/* FILL ME */
PROP_0,
PROP_CLAMP_LUMA,
PROP_CLAMP_CHROMA,
PROP_QUALITY,
PROP_DECODE_NTH
};
const gint qualities[] = {
......@@ -129,30 +55,18 @@ const gint qualities[] = {
DV_QUALITY_AC_2 | DV_QUALITY_COLOR
};
/* The PadFactory structures describe what pads the element has or
* can have. They can be quite complex, but for this dvdec plugin
* they are rather simple.
*/
static GstStaticPadTemplate sink_temp = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-dv, systemstream = (boolean) true")
GST_STATIC_CAPS ("video/x-dv, systemstream = (boolean) false")
);
static GstStaticPadTemplate video_src_temp = GST_STATIC_PAD_TEMPLATE ("video",
static GstStaticPadTemplate src_temp = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw-yuv, "
"format = (fourcc) YUY2, "
"width = (int) 720, "
"height = (int) { "
G_STRINGIFY (NTSC_HEIGHT) ", " G_STRINGIFY (PAL_HEIGHT)
" }, "
"pixel-aspect-ratio=(fraction) { "
G_STRINGIFY (PAL_NORMAL_PAR_X) "/" G_STRINGIFY (PAL_NORMAL_PAR_Y) ","
G_STRINGIFY (PAL_WIDE_PAR_X) "/" G_STRINGIFY (PAL_WIDE_PAR_Y) ","
G_STRINGIFY (NTSC_NORMAL_PAR_X) "/" G_STRINGIFY (NTSC_NORMAL_PAR_Y) ","
G_STRINGIFY (NTSC_WIDE_PAR_X) "/" G_STRINGIFY (NTSC_WIDE_PAR_Y) "},"
"framerate = (double) [ 1.0, 60.0 ];"
"video/x-raw-rgb, "
"bpp = (int) 32, "
......@@ -162,14 +76,6 @@ static GstStaticPadTemplate video_src_temp = GST_STATIC_PAD_TEMPLATE ("video",
"green_mask = (int) 0x00ff0000, "
"blue_mask = (int) 0xff000000, "
"width = (int) 720, "
"height = (int) { "
G_STRINGIFY (NTSC_HEIGHT) ", " G_STRINGIFY (PAL_HEIGHT)
" }, "
"pixel-aspect-ratio=(fraction) { "
G_STRINGIFY (PAL_NORMAL_PAR_X) "/" G_STRINGIFY (PAL_NORMAL_PAR_Y) ","
G_STRINGIFY (PAL_WIDE_PAR_X) "/" G_STRINGIFY (PAL_WIDE_PAR_Y) ","
G_STRINGIFY (NTSC_NORMAL_PAR_X) "/" G_STRINGIFY (NTSC_NORMAL_PAR_Y) ","
G_STRINGIFY (NTSC_WIDE_PAR_X) "/" G_STRINGIFY (NTSC_WIDE_PAR_Y) "},"
"framerate = (double) [ 1.0, 60.0 ];"
"video/x-raw-rgb, "
"bpp = (int) 24, "
......@@ -178,28 +84,7 @@ static GstStaticPadTemplate video_src_temp = GST_STATIC_PAD_TEMPLATE ("video",
"red_mask = (int) 0x00ff0000, "
"green_mask = (int) 0x0000ff00, "
"blue_mask = (int) 0x000000ff, "
"width = (int) 720, "
"height = (int) { "
G_STRINGIFY (NTSC_HEIGHT) ", " G_STRINGIFY (PAL_HEIGHT)
" }, "
"pixel-aspect-ratio=(fraction) { "
G_STRINGIFY (PAL_NORMAL_PAR_X) "/" G_STRINGIFY (PAL_NORMAL_PAR_Y) ","
G_STRINGIFY (PAL_WIDE_PAR_X) "/" G_STRINGIFY (PAL_WIDE_PAR_Y) ","
G_STRINGIFY (NTSC_NORMAL_PAR_X) "/" G_STRINGIFY (NTSC_NORMAL_PAR_Y) ","
G_STRINGIFY (NTSC_WIDE_PAR_X) "/" G_STRINGIFY (NTSC_WIDE_PAR_Y) "},"
"framerate = (double) [ 1.0, 60.0 ]")
);
static GstStaticPadTemplate audio_src_temp = GST_STATIC_PAD_TEMPLATE ("audio",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"depth = (int) 16, "
"width = (int) 16, "
"signed = (boolean) TRUE, "
"channels = (int) {2, 4}, "
"endianness = (int) " G_STRINGIFY (G_LITTLE_ENDIAN) ", "
"rate = (int) { 32000, 44100, 48000 }")
"width = (int) 720, " "framerate = (double) [ 1.0, 60.0 ]")
);
#define GST_TYPE_DVDEC_QUALITY (gst_dvdec_quality_get_type())
......@@ -225,34 +110,10 @@ gst_dvdec_quality_get_type (void)
return qtype;
}
/* A number of functon prototypes are given so we can refer to them later. */
static void gst_dvdec_base_init (gpointer g_class);
static void gst_dvdec_class_init (GstDVDecClass * klass);
static void gst_dvdec_init (GstDVDec * dvdec);
static const GstQueryType *gst_dvdec_get_src_query_types (GstPad * pad);
static gboolean gst_dvdec_src_query (GstPad * pad, GstQuery * query);
static const GstQueryType *gst_dvdec_get_sink_query_types (GstPad * pad);
static gboolean gst_dvdec_sink_query (GstPad * pad, GstQuery * query);
GST_BOILERPLATE (GstDVDec, gst_dvdec, GstElement, GST_TYPE_ELEMENT);
#if 0
static const GstFormat *gst_dvdec_get_formats (GstPad * pad);
#endif
static gboolean gst_dvdec_sink_convert (GstPad * pad, GstFormat src_format,
gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
static gboolean gst_dvdec_src_convert (GstPad * pad, GstFormat src_format,
gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
static gboolean gst_dvdec_video_setcaps (GstPad * pad, GstCaps * caps);
static GstCaps *gst_dvdec_video_getcaps (GstPad * pad);
#if 0
static const GstEventMask *gst_dvdec_get_event_masks (GstPad * pad);
#endif
static gboolean gst_dvdec_handle_src_event (GstPad * pad, GstEvent * event);
static GstFlowReturn gst_dvdec_flush (GstDVDec * dvdec);
static gboolean gst_dvdec_sink_setcaps (GstPad * pad, GstCaps * caps);
static GstFlowReturn gst_dvdec_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_dvdec_handle_sink_event (GstPad * pad, GstEvent * event);
static GstElementStateReturn gst_dvdec_change_state (GstElement * element);
......@@ -261,100 +122,41 @@ static void gst_dvdec_set_property (GObject * object, guint prop_id,
static void gst_dvdec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
/* The parent class pointer needs to be kept around for some object
* operations.
*/
static GstElementClass *parent_class = NULL;
/* This array holds the ids of the signals registered for this object.
* The array indexes are based on the enum up above.
*/
/*static guint gst_dvdec_signals[LAST_SIGNAL] = { 0 }; */
/* This function is used to register and subsequently return the type
* identifier for this object class. On first invocation, it will
* register the type, providing the name of the class, struct sizes,
* and pointers to the various functions that define the class.
*/
GType
gst_dvdec_get_type (void)
{
static GType dvdec_type = 0;
if (!dvdec_type) {
static const GTypeInfo dvdec_info = {
sizeof (GstDVDecClass),
gst_dvdec_base_init,
NULL,
(GClassInitFunc) gst_dvdec_class_init,
NULL,
NULL,
sizeof (GstDVDec),
0,
(GInstanceInitFunc) gst_dvdec_init,
};
dvdec_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstDVDec", &dvdec_info, 0);
}
return dvdec_type;
}
static void
gst_dvdec_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
/* The pad templates can be easily generated from the factories above,
* and then added to the list of padtemplates for the elementfactory.
* Note that the generated padtemplates are stored in static global
* variables, for the gst_dvdec_init function to use later on.
*/
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_temp));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&video_src_temp));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&audio_src_temp));
gst_static_pad_template_get (&src_temp));
gst_element_class_set_details (element_class, &dvdec_details);
}
/* In order to create an instance of an object, the class must be
* initialized by this function. GObject will take care of running
* it, based on the pointer to the function provided above.
*/
static void
gst_dvdec_class_init (GstDVDecClass * klass)
{
/* Class pointers are needed to supply pointers to the private
* implementations of parent class methods.
*/
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
/* Since the dvdec class contains the parent classes, you can simply
* cast the pointer to get access to the parent classes.
*/
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->set_property = gst_dvdec_set_property;
gobject_class->get_property = gst_dvdec_get_property;
/* The parent class is needed for class method overrides. */
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CLAMP_LUMA,
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_CLAMP_LUMA,
g_param_spec_boolean ("clamp_luma", "Clamp luma", "Clamp luma",
FALSE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CLAMP_CHROMA,
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_CLAMP_CHROMA,
g_param_spec_boolean ("clamp_chroma", "Clamp chroma", "Clamp chroma",
FALSE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QUALITY,
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_QUALITY,
g_param_spec_enum ("quality", "Quality", "Decoding quality",
GST_TYPE_DVDEC_QUALITY, DV_DEFAULT_QUALITY, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DECODE_NTH,
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DECODE_NTH,
g_param_spec_int ("drop-factor", "Drop Factor", "Only decode Nth frame",
1, G_MAXINT, DV_DEFAULT_DECODE_NTH, G_PARAM_READWRITE));
......@@ -364,802 +166,109 @@ gst_dvdec_class_init (GstDVDecClass * klass)
dv_init (0, 0);
}
/* This function is responsible for initializing a specific instance of
* the plugin.
*/
static void
gst_dvdec_init (GstDVDec * dvdec)
{
gint i;
dvdec->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get (&sink_temp),
"sink");
gst_pad_set_setcaps_function (dvdec->sinkpad,
GST_DEBUG_FUNCPTR (gst_dvdec_sink_setcaps));
gst_pad_set_chain_function (dvdec->sinkpad, gst_dvdec_chain);
gst_pad_set_event_function (dvdec->sinkpad, gst_dvdec_handle_sink_event);
gst_pad_set_query_function (dvdec->sinkpad,
GST_DEBUG_FUNCPTR (gst_dvdec_sink_query));
gst_pad_set_query_type_function (dvdec->sinkpad,
GST_DEBUG_FUNCPTR (gst_dvdec_get_sink_query_types));
#if 0
gst_pad_set_formats_function (dvdec->sinkpad,
GST_DEBUG_FUNCPTR (gst_dvdec_get_formats));
#endif
gst_element_add_pad (GST_ELEMENT (dvdec), dvdec->sinkpad);
dvdec->videosrcpad =
gst_pad_new_from_template (gst_static_pad_template_get (&video_src_temp),
"video");
gst_pad_set_query_function (dvdec->videosrcpad,
GST_DEBUG_FUNCPTR (gst_dvdec_src_query));
gst_pad_set_query_type_function (dvdec->videosrcpad,
GST_DEBUG_FUNCPTR (gst_dvdec_get_src_query_types));
gst_pad_set_event_function (dvdec->videosrcpad,
GST_DEBUG_FUNCPTR (gst_dvdec_handle_src_event));
#if 0
gst_pad_set_event_mask_function (dvdec->videosrcpad,
GST_DEBUG_FUNCPTR (gst_dvdec_get_event_masks));
gst_pad_set_formats_function (dvdec->videosrcpad,
GST_DEBUG_FUNCPTR (gst_dvdec_get_formats));
#endif
gst_pad_set_getcaps_function (dvdec->videosrcpad,
GST_DEBUG_FUNCPTR (gst_dvdec_video_getcaps));
gst_pad_set_setcaps_function (dvdec->videosrcpad,
GST_DEBUG_FUNCPTR (gst_dvdec_video_setcaps));
gst_element_add_pad (GST_ELEMENT (dvdec), dvdec->videosrcpad);
dvdec->audiosrcpad =
gst_pad_new_from_template (gst_static_pad_template_get (&audio_src_temp),
"audio");
gst_pad_set_query_function (dvdec->audiosrcpad,
GST_DEBUG_FUNCPTR (gst_dvdec_src_query));
gst_pad_set_query_type_function (dvdec->audiosrcpad,
GST_DEBUG_FUNCPTR (gst_dvdec_get_src_query_types));
gst_pad_set_event_function (dvdec->audiosrcpad,
GST_DEBUG_FUNCPTR (gst_dvdec_handle_src_event));
#if 0
gst_pad_set_event_mask_function (dvdec->audiosrcpad,
GST_DEBUG_FUNCPTR (gst_dvdec_get_event_masks));
gst_pad_set_formats_function (dvdec->audiosrcpad,
GST_DEBUG_FUNCPTR (gst_dvdec_get_formats));
#endif
dvdec->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get (&src_temp),
"src");
/* once we set caps, this is the only thing we can do */
gst_pad_use_fixed_caps (dvdec->audiosrcpad);
gst_element_add_pad (GST_ELEMENT (dvdec), dvdec->audiosrcpad);
gst_pad_use_fixed_caps (dvdec->srcpad);
dvdec->adapter = gst_adapter_new ();
gst_element_add_pad (GST_ELEMENT (dvdec), dvdec->srcpad);
dvdec->timestamp = 0LL;
dvdec->start_timestamp = -1LL;
dvdec->stop_timestamp = -1LL;
dvdec->need_discont = FALSE;
dvdec->new_media = FALSE;
dvdec->framerate = 0;
dvdec->height = 0;
dvdec->frequency = 0;
dvdec->channels = 0;
dvdec->wide = FALSE;
dvdec->drop_factor = 1;
dvdec->headers_seen = FALSE;
dvdec->clamp_luma = FALSE;
dvdec->clamp_chroma = FALSE;
dvdec->quality = DV_DEFAULT_QUALITY;
dvdec->loop = FALSE;
for (i = 0; i < 4; i++) {
dvdec->audio_buffers[i] =
(gint16 *) g_malloc (DV_AUDIO_MAX_SAMPLES * sizeof (gint16));
}
}
#if 0
static const GstFormat *
gst_dvdec_get_formats (GstPad * pad)
{
static const GstFormat src_formats[] = {
GST_FORMAT_BYTES,
GST_FORMAT_DEFAULT,
GST_FORMAT_TIME,
0
};
static const GstFormat sink_formats[] = {
GST_FORMAT_BYTES,
GST_FORMAT_TIME,
GST_FORMAT_DEFAULT,
0
};
return (GST_PAD_IS_SRC (pad) ? src_formats : sink_formats);
}
#endif
static gboolean
gst_dvdec_src_convert (GstPad * pad, GstFormat src_format, gint64 src_value,
GstFormat * dest_format, gint64 * dest_value)
gst_dvdec_sink_setcaps (GstPad * pad, GstCaps * caps)
{
gboolean res = TRUE;
GstDVDec *dvdec;
GstStructure *s;
GstCaps *othercaps;
const GValue *v;
dvdec = GST_DVDEC (gst_pad_get_parent (pad));
if (dvdec->frame_len == -1)
goto error;
if (dvdec->decoder == NULL)
goto error;
if (*dest_format == src_format) {
*dest_value = src_value;
goto done;
}
switch (src_format) {
case GST_FORMAT_BYTES:
switch (*dest_format) {
case GST_FORMAT_BYTES:
*dest_value = src_value;
break;
case GST_FORMAT_DEFAULT:
case GST_FORMAT_TIME:
*dest_format = GST_FORMAT_TIME;
if (pad == dvdec->videosrcpad)
*dest_value = src_value * GST_SECOND /
(720 * dvdec->height * dvdec->bpp * dvdec->framerate /
GST_SECOND);
else if (pad == dvdec->audiosrcpad)
*dest_value = src_value * GST_SECOND /
(2 * dvdec->frequency * dvdec->channels);
break;
default:
res = FALSE;
}
break;
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_BYTES:
if (pad == dvdec->videosrcpad)
*dest_value = src_value * 720 * dvdec->height * dvdec->bpp *
dvdec->framerate / GST_SECOND;
else if (pad == dvdec->audiosrcpad)
*dest_value = 2 * src_value * dvdec->frequency *
dvdec->channels / GST_SECOND;
break;
case GST_FORMAT_TIME:
case GST_FORMAT_DEFAULT:
*dest_format = GST_FORMAT_TIME;
*dest_value = src_value;
break;
default:
res = FALSE;
}
break;
default:
res = FALSE;
}
done:
gst_object_unref (dvdec);
return res;
error:
{
gst_object_unref (dvdec);
return FALSE;
}
}
static gboolean
gst_dvdec_sink_convert (GstPad * pad, GstFormat src_format, gint64 src_value,
GstFormat * dest_format, gint64 * dest_value)
{
gboolean res = TRUE;
GstDVDec *dvdec;
gdouble framerate;
dvdec = GST_DVDEC (gst_pad_get_parent (pad));
/* first parse the caps */
s = gst_caps_get_structure (caps, 0);
if (dvdec->frame_len <= 0)
if (!gst_structure_get_int (s, "height", &dvdec->height))
goto error;
if (!(v = gst_structure_get_value (s, "pixel-aspect-ratio")))
goto error;
if (!gst_structure_get_double (s, "framerate", &dvdec->framerate))
goto error;
GST_DEBUG ("%d -> %d", src_format, *dest_format);
if (*dest_format == GST_FORMAT_DEFAULT)
*dest_format = GST_FORMAT_TIME;
if (*dest_format == src_format) {
*dest_value = src_value;
goto done;
}
framerate = (dvdec->PAL ? PAL_FRAMERATE : NTSC_FRAMERATE);
switch (src_format) {
case GST_FORMAT_BYTES:
switch (*dest_format) {
case GST_FORMAT_TIME:
{
guint64 frame;
/* get frame number */
frame = src_value / dvdec->frame_len;
*dest_value = (frame * GST_SECOND) / framerate;
break;
}
default:
res = FALSE;
}
break;
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_BYTES:
{
guint64 frame;
/* calculate the frame */
frame = src_value * framerate / GST_SECOND;
/* calculate the offset */
*dest_value = frame * dvdec->frame_len;
break;
}
default:
res = FALSE;
}
break;
default:
res = FALSE;
}
done:
gst_object_unref (dvdec);
return res;
error:
{
gst_object_unref (dvdec);
return FALSE;
}
}
static const GstQueryType *
gst_dvdec_get_src_query_types (GstPad * pad)
{
static const GstQueryType src_query_types[] = {
GST_QUERY_POSITION,
GST_QUERY_CONVERT,
0
};
return src_query_types;
}
static gboolean
gst_dvdec_src_query (GstPad * pad, GstQuery * query)
{
gboolean res = TRUE;
GstDVDec *dvdec;
dvdec = GST_DVDEC (gst_pad_get_parent (pad));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
GstFormat format;
gint64 cur, end;
GstPad *peer;
/* get target format */
gst_query_parse_position (query, &format, NULL, NULL);
/* change query to perform on peer */
gst_query_set_position (query, GST_FORMAT_BYTES, -1, -1);
if ((peer = gst_pad_get_peer (dvdec->sinkpad))) {
/* ask peer for total length */
if (!(res = gst_pad_query (peer, query))) {
gst_object_unref (peer);
goto error;
}
/* get peer total length */
gst_query_parse_position (query, NULL, NULL, &end);
/* convert end to requested format */
if (end != -1) {
if (!(res = gst_pad_query_convert (dvdec->sinkpad,
GST_FORMAT_BYTES, end, &format, &end))) {
gst_object_unref (peer);
goto error;
}
}
gst_object_unref (peer);