mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-04 23:46:43 +00:00
692 lines
20 KiB
C
692 lines
20 KiB
C
/* 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
/**
|
|
* SECTION:element-dvdec
|
|
* @title: dvdec
|
|
*
|
|
* dvdec decodes DV video into raw video. The element expects a full DV frame
|
|
* as input, which is 120000 bytes for NTSC and 144000 for PAL video.
|
|
*
|
|
* This element can perform simple frame dropping with the #GstDVDec:drop-factor
|
|
* property. Setting this property to a value N > 1 will only decode every
|
|
* Nth frame.
|
|
*
|
|
* ## Example launch line
|
|
* |[
|
|
* gst-launch-1.0 filesrc location=test.dv ! dvdemux name=demux ! dvdec ! xvimagesink
|
|
* ]| This pipeline decodes and renders the raw DV stream to a videosink.
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
#include <string.h>
|
|
#include <math.h>
|
|
#include <gst/video/video.h>
|
|
#include <gst/video/gstvideometa.h>
|
|
#include <gst/video/gstvideopool.h>
|
|
|
|
#include "gstdvdec.h"
|
|
|
|
/* sizes of one input buffer */
|
|
#define NTSC_HEIGHT 480
|
|
#define NTSC_BUFFER 120000
|
|
#define NTSC_FRAMERATE_NUMERATOR 30000
|
|
#define NTSC_FRAMERATE_DENOMINATOR 1001
|
|
|
|
#define PAL_HEIGHT 576
|
|
#define PAL_BUFFER 144000
|
|
#define PAL_FRAMERATE_NUMERATOR 25
|
|
#define PAL_FRAMERATE_DENOMINATOR 1
|
|
|
|
#define PAL_NORMAL_PAR_X 16
|
|
#define PAL_NORMAL_PAR_Y 15
|
|
#define PAL_WIDE_PAR_X 64
|
|
#define PAL_WIDE_PAR_Y 45
|
|
|
|
#define NTSC_NORMAL_PAR_X 8
|
|
#define NTSC_NORMAL_PAR_Y 9
|
|
#define NTSC_WIDE_PAR_X 32
|
|
#define NTSC_WIDE_PAR_Y 27
|
|
|
|
#define DV_DEFAULT_QUALITY DV_QUALITY_BEST
|
|
#define DV_DEFAULT_DECODE_NTH 1
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (dvdec_debug);
|
|
#define GST_CAT_DEFAULT dvdec_debug
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_CLAMP_LUMA,
|
|
PROP_CLAMP_CHROMA,
|
|
PROP_QUALITY,
|
|
PROP_DECODE_NTH
|
|
};
|
|
|
|
const gint qualities[] = {
|
|
DV_QUALITY_DC,
|
|
DV_QUALITY_AC_1,
|
|
DV_QUALITY_AC_2,
|
|
DV_QUALITY_DC | DV_QUALITY_COLOR,
|
|
DV_QUALITY_AC_1 | DV_QUALITY_COLOR,
|
|
DV_QUALITY_AC_2 | DV_QUALITY_COLOR
|
|
};
|
|
|
|
static GstStaticPadTemplate sink_temp = GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("video/x-dv, systemstream = (boolean) false")
|
|
);
|
|
|
|
static GstStaticPadTemplate src_temp = GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("video/x-raw, "
|
|
"format = (string) { YUY2, BGRx, RGB }, "
|
|
"framerate = (fraction) [ 1/1, 60/1 ], "
|
|
"width = (int) 720, " "height = (int) { 576, 480 }")
|
|
);
|
|
|
|
#define GST_TYPE_DVDEC_QUALITY (gst_dvdec_quality_get_type())
|
|
static GType
|
|
gst_dvdec_quality_get_type (void)
|
|
{
|
|
static GType qtype = 0;
|
|
|
|
if (qtype == 0) {
|
|
static const GEnumValue values[] = {
|
|
{0, "Monochrome, DC (Fastest)", "fastest"},
|
|
{1, "Monochrome, first AC coefficient", "monochrome-ac"},
|
|
{2, "Monochrome, highest quality", "monochrome-best"},
|
|
{3, "Colour, DC, fastest", "colour-fastest"},
|
|
{4, "Colour, using only the first AC coefficient", "colour-ac"},
|
|
{5, "Highest quality colour decoding", "best"},
|
|
{0, NULL, NULL},
|
|
};
|
|
|
|
qtype = g_enum_register_static ("GstDVDecQualityEnum", values);
|
|
}
|
|
return qtype;
|
|
}
|
|
|
|
#define gst_dvdec_parent_class parent_class
|
|
G_DEFINE_TYPE (GstDVDec, gst_dvdec, GST_TYPE_ELEMENT);
|
|
|
|
static GstFlowReturn gst_dvdec_chain (GstPad * pad, GstObject * parent,
|
|
GstBuffer * buffer);
|
|
static gboolean gst_dvdec_sink_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event);
|
|
|
|
static GstStateChangeReturn gst_dvdec_change_state (GstElement * element,
|
|
GstStateChange transition);
|
|
|
|
static void gst_dvdec_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
static void gst_dvdec_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
|
|
static void
|
|
gst_dvdec_class_init (GstDVDecClass * klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
GstElementClass *gstelement_class;
|
|
|
|
gobject_class = (GObjectClass *) klass;
|
|
gstelement_class = (GstElementClass *) klass;
|
|
|
|
gobject_class->set_property = gst_dvdec_set_property;
|
|
gobject_class->get_property = gst_dvdec_get_property;
|
|
|
|
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_PARAM_STATIC_STRINGS));
|
|
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_PARAM_STATIC_STRINGS));
|
|
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_PARAM_STATIC_STRINGS));
|
|
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 | G_PARAM_STATIC_STRINGS));
|
|
|
|
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_dvdec_change_state);
|
|
|
|
gst_element_class_add_static_pad_template (gstelement_class, &sink_temp);
|
|
gst_element_class_add_static_pad_template (gstelement_class, &src_temp);
|
|
|
|
gst_element_class_set_static_metadata (gstelement_class, "DV video decoder",
|
|
"Codec/Decoder/Video",
|
|
"Uses libdv to decode DV video (smpte314) (libdv.sourceforge.net)",
|
|
"Erik Walthinsen <omega@cse.ogi.edu>," "Wim Taymans <wim@fluendo.com>");
|
|
|
|
GST_DEBUG_CATEGORY_INIT (dvdec_debug, "dvdec", 0, "DV decoding element");
|
|
|
|
gst_type_mark_as_plugin_api (GST_TYPE_DVDEC_QUALITY, 0);
|
|
}
|
|
|
|
static void
|
|
gst_dvdec_init (GstDVDec * dvdec)
|
|
{
|
|
dvdec->sinkpad = gst_pad_new_from_static_template (&sink_temp, "sink");
|
|
gst_pad_set_chain_function (dvdec->sinkpad, gst_dvdec_chain);
|
|
gst_pad_set_event_function (dvdec->sinkpad, gst_dvdec_sink_event);
|
|
gst_element_add_pad (GST_ELEMENT (dvdec), dvdec->sinkpad);
|
|
|
|
dvdec->srcpad = gst_pad_new_from_static_template (&src_temp, "src");
|
|
gst_pad_use_fixed_caps (dvdec->srcpad);
|
|
gst_element_add_pad (GST_ELEMENT (dvdec), dvdec->srcpad);
|
|
|
|
dvdec->framerate_numerator = 0;
|
|
dvdec->framerate_denominator = 0;
|
|
dvdec->wide = FALSE;
|
|
dvdec->drop_factor = 1;
|
|
|
|
dvdec->clamp_luma = FALSE;
|
|
dvdec->clamp_chroma = FALSE;
|
|
dvdec->quality = DV_DEFAULT_QUALITY;
|
|
}
|
|
|
|
static gboolean
|
|
gst_dvdec_sink_setcaps (GstDVDec * dvdec, GstCaps * caps)
|
|
{
|
|
GstStructure *s;
|
|
const GValue *par = NULL, *rate = NULL;
|
|
|
|
/* first parse the caps */
|
|
s = gst_caps_get_structure (caps, 0);
|
|
|
|
/* we allow framerate and PAR to be overwritten. framerate is mandatory. */
|
|
if (!(rate = gst_structure_get_value (s, "framerate")))
|
|
goto no_framerate;
|
|
par = gst_structure_get_value (s, "pixel-aspect-ratio");
|
|
|
|
if (par) {
|
|
dvdec->par_x = gst_value_get_fraction_numerator (par);
|
|
dvdec->par_y = gst_value_get_fraction_denominator (par);
|
|
dvdec->need_par = FALSE;
|
|
} else {
|
|
dvdec->par_x = 0;
|
|
dvdec->par_y = 0;
|
|
dvdec->need_par = TRUE;
|
|
}
|
|
dvdec->framerate_numerator = gst_value_get_fraction_numerator (rate);
|
|
dvdec->framerate_denominator = gst_value_get_fraction_denominator (rate);
|
|
dvdec->sink_negotiated = TRUE;
|
|
dvdec->src_negotiated = FALSE;
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
no_framerate:
|
|
{
|
|
GST_DEBUG_OBJECT (dvdec, "no framerate specified in caps");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_dvdec_negotiate_pool (GstDVDec * dec, GstCaps * caps, GstVideoInfo * info)
|
|
{
|
|
GstQuery *query;
|
|
GstBufferPool *pool;
|
|
guint size, min, max;
|
|
GstStructure *config;
|
|
|
|
/* find a pool for the negotiated caps now */
|
|
query = gst_query_new_allocation (caps, TRUE);
|
|
|
|
if (!gst_pad_peer_query (dec->srcpad, query)) {
|
|
GST_DEBUG_OBJECT (dec, "didn't get downstream ALLOCATION hints");
|
|
}
|
|
|
|
if (gst_query_get_n_allocation_pools (query) > 0) {
|
|
/* we got configuration from our peer, parse them */
|
|
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
|
|
size = MAX (size, info->size);
|
|
} else {
|
|
pool = NULL;
|
|
size = info->size;
|
|
min = max = 0;
|
|
}
|
|
|
|
if (pool == NULL) {
|
|
/* we did not get a pool, make one ourselves then */
|
|
pool = gst_video_buffer_pool_new ();
|
|
}
|
|
|
|
if (dec->pool) {
|
|
gst_buffer_pool_set_active (dec->pool, FALSE);
|
|
gst_object_unref (dec->pool);
|
|
}
|
|
dec->pool = pool;
|
|
|
|
config = gst_buffer_pool_get_config (pool);
|
|
gst_buffer_pool_config_set_params (config, caps, size, min, max);
|
|
|
|
if (gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL)) {
|
|
/* just set the option, if the pool can support it we will transparently use
|
|
* it through the video info API. We could also see if the pool support this
|
|
* option and only activate it then. */
|
|
gst_buffer_pool_config_add_option (config,
|
|
GST_BUFFER_POOL_OPTION_VIDEO_META);
|
|
}
|
|
gst_buffer_pool_set_config (pool, config);
|
|
|
|
/* and activate */
|
|
gst_buffer_pool_set_active (pool, TRUE);
|
|
|
|
gst_query_unref (query);
|
|
}
|
|
|
|
static gboolean
|
|
gst_dvdec_src_negotiate (GstDVDec * dvdec)
|
|
{
|
|
GstCaps *othercaps;
|
|
gboolean ret;
|
|
|
|
/* no PAR was specified in input, derive from encoded data */
|
|
if (dvdec->need_par) {
|
|
if (dvdec->PAL) {
|
|
if (dvdec->wide) {
|
|
dvdec->par_x = PAL_WIDE_PAR_X;
|
|
dvdec->par_y = PAL_WIDE_PAR_Y;
|
|
} else {
|
|
dvdec->par_x = PAL_NORMAL_PAR_X;
|
|
dvdec->par_y = PAL_NORMAL_PAR_Y;
|
|
}
|
|
} else {
|
|
if (dvdec->wide) {
|
|
dvdec->par_x = NTSC_WIDE_PAR_X;
|
|
dvdec->par_y = NTSC_WIDE_PAR_Y;
|
|
} else {
|
|
dvdec->par_x = NTSC_NORMAL_PAR_X;
|
|
dvdec->par_y = NTSC_NORMAL_PAR_Y;
|
|
}
|
|
}
|
|
GST_DEBUG_OBJECT (dvdec, "Inferred PAR %d/%d from video format",
|
|
dvdec->par_x, dvdec->par_y);
|
|
}
|
|
|
|
/* ignoring rgb, bgr0 for now */
|
|
dvdec->bpp = 2;
|
|
|
|
gst_video_info_set_format (&dvdec->vinfo, GST_VIDEO_FORMAT_YUY2,
|
|
720, dvdec->height);
|
|
dvdec->vinfo.fps_n = dvdec->framerate_numerator;
|
|
dvdec->vinfo.fps_d = dvdec->framerate_denominator;
|
|
dvdec->vinfo.par_n = dvdec->par_x;
|
|
dvdec->vinfo.par_d = dvdec->par_y;
|
|
if (dvdec->interlaced) {
|
|
dvdec->vinfo.interlace_mode = GST_VIDEO_INTERLACE_MODE_INTERLEAVED;
|
|
} else {
|
|
dvdec->vinfo.interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
|
|
}
|
|
|
|
othercaps = gst_video_info_to_caps (&dvdec->vinfo);
|
|
ret = gst_pad_set_caps (dvdec->srcpad, othercaps);
|
|
|
|
gst_dvdec_negotiate_pool (dvdec, othercaps, &dvdec->vinfo);
|
|
gst_caps_unref (othercaps);
|
|
|
|
dvdec->src_negotiated = TRUE;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_dvdec_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
{
|
|
GstDVDec *dvdec;
|
|
gboolean res = TRUE;
|
|
|
|
dvdec = GST_DVDEC (parent);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_FLUSH_STOP:
|
|
gst_segment_init (&dvdec->segment, GST_FORMAT_UNDEFINED);
|
|
dvdec->need_segment = FALSE;
|
|
break;
|
|
case GST_EVENT_SEGMENT:{
|
|
const GstSegment *segment;
|
|
|
|
gst_event_parse_segment (event, &segment);
|
|
|
|
GST_DEBUG_OBJECT (dvdec, "Got SEGMENT %" GST_SEGMENT_FORMAT, &segment);
|
|
|
|
gst_segment_copy_into (segment, &dvdec->segment);
|
|
if (!gst_pad_has_current_caps (dvdec->srcpad)) {
|
|
dvdec->need_segment = TRUE;
|
|
gst_event_unref (event);
|
|
event = NULL;
|
|
res = TRUE;
|
|
} else {
|
|
dvdec->need_segment = FALSE;
|
|
}
|
|
break;
|
|
}
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
GstCaps *caps;
|
|
|
|
gst_event_parse_caps (event, &caps);
|
|
res = gst_dvdec_sink_setcaps (dvdec, caps);
|
|
gst_event_unref (event);
|
|
event = NULL;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (event)
|
|
res = gst_pad_push_event (dvdec->srcpad, event);
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_dvdec_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
|
{
|
|
GstDVDec *dvdec;
|
|
guint8 *inframe;
|
|
guint8 *outframe_ptrs[3];
|
|
gint outframe_pitches[3];
|
|
GstMapInfo map;
|
|
GstVideoFrame frame;
|
|
GstBuffer *outbuf;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
guint length;
|
|
guint64 cstart = GST_CLOCK_TIME_NONE, cstop = GST_CLOCK_TIME_NONE;
|
|
gboolean PAL, wide;
|
|
|
|
dvdec = GST_DVDEC (parent);
|
|
|
|
gst_buffer_map (buf, &map, GST_MAP_READ);
|
|
inframe = map.data;
|
|
|
|
/* buffer should be at least the size of one NTSC frame, this should
|
|
* be enough to decode the header. */
|
|
if (G_UNLIKELY (map.size < NTSC_BUFFER))
|
|
goto wrong_size;
|
|
|
|
/* preliminary dropping. unref and return if outside of configured segment */
|
|
if ((dvdec->segment.format == GST_FORMAT_TIME) &&
|
|
(!(gst_segment_clip (&dvdec->segment, GST_FORMAT_TIME,
|
|
GST_BUFFER_TIMESTAMP (buf),
|
|
GST_BUFFER_TIMESTAMP (buf) + GST_BUFFER_DURATION (buf),
|
|
&cstart, &cstop))))
|
|
goto dropping;
|
|
|
|
if (G_UNLIKELY (dv_parse_header (dvdec->decoder, inframe) < 0))
|
|
goto parse_header_error;
|
|
|
|
/* get size */
|
|
PAL = dv_system_50_fields (dvdec->decoder);
|
|
wide = dv_format_wide (dvdec->decoder);
|
|
|
|
/* check the buffer is of right size after we know if we are
|
|
* dealing with PAL or NTSC */
|
|
length = (PAL ? PAL_BUFFER : NTSC_BUFFER);
|
|
if (G_UNLIKELY (map.size < length))
|
|
goto wrong_size;
|
|
|
|
dv_parse_packs (dvdec->decoder, inframe);
|
|
|
|
if (dvdec->video_offset % dvdec->drop_factor != 0)
|
|
goto skip;
|
|
|
|
/* renegotiate on change */
|
|
if (PAL != dvdec->PAL || wide != dvdec->wide) {
|
|
dvdec->src_negotiated = FALSE;
|
|
dvdec->PAL = PAL;
|
|
dvdec->wide = wide;
|
|
}
|
|
|
|
dvdec->height = (dvdec->PAL ? PAL_HEIGHT : NTSC_HEIGHT);
|
|
|
|
dvdec->interlaced = !dv_is_progressive (dvdec->decoder);
|
|
|
|
/* negotiate if not done yet */
|
|
if (!dvdec->src_negotiated) {
|
|
if (!gst_dvdec_src_negotiate (dvdec))
|
|
goto not_negotiated;
|
|
}
|
|
|
|
if (gst_pad_check_reconfigure (dvdec->srcpad)) {
|
|
GstCaps *caps;
|
|
|
|
caps = gst_pad_get_current_caps (dvdec->srcpad);
|
|
if (!caps)
|
|
goto flushing;
|
|
|
|
gst_dvdec_negotiate_pool (dvdec, caps, &dvdec->vinfo);
|
|
gst_caps_unref (caps);
|
|
}
|
|
|
|
if (dvdec->need_segment) {
|
|
gst_pad_push_event (dvdec->srcpad, gst_event_new_segment (&dvdec->segment));
|
|
dvdec->need_segment = FALSE;
|
|
}
|
|
|
|
ret = gst_buffer_pool_acquire_buffer (dvdec->pool, &outbuf, NULL);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
goto no_buffer;
|
|
|
|
gst_video_frame_map (&frame, &dvdec->vinfo, outbuf, GST_MAP_WRITE);
|
|
|
|
outframe_ptrs[0] = GST_VIDEO_FRAME_COMP_DATA (&frame, 0);
|
|
outframe_pitches[0] = GST_VIDEO_FRAME_COMP_STRIDE (&frame, 0);
|
|
|
|
/* the rest only matters for YUY2 */
|
|
if (dvdec->bpp < 3) {
|
|
outframe_ptrs[1] = GST_VIDEO_FRAME_COMP_DATA (&frame, 1);
|
|
outframe_ptrs[2] = GST_VIDEO_FRAME_COMP_DATA (&frame, 2);
|
|
|
|
outframe_pitches[1] = GST_VIDEO_FRAME_COMP_STRIDE (&frame, 1);
|
|
outframe_pitches[2] = GST_VIDEO_FRAME_COMP_STRIDE (&frame, 2);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (dvdec, "decoding and pushing buffer");
|
|
dv_decode_full_frame (dvdec->decoder, inframe,
|
|
e_dv_color_yuv, outframe_ptrs, outframe_pitches);
|
|
|
|
gst_video_frame_unmap (&frame);
|
|
|
|
GST_BUFFER_FLAG_UNSET (outbuf, GST_VIDEO_BUFFER_FLAG_TFF);
|
|
|
|
GST_BUFFER_OFFSET (outbuf) = GST_BUFFER_OFFSET (buf);
|
|
GST_BUFFER_OFFSET_END (outbuf) = GST_BUFFER_OFFSET_END (buf);
|
|
|
|
/* FIXME : Compute values when using non-TIME segments,
|
|
* but for the moment make sure we at least don't set bogus values
|
|
*/
|
|
if (GST_CLOCK_TIME_IS_VALID (cstart)) {
|
|
GST_BUFFER_TIMESTAMP (outbuf) = cstart;
|
|
if (GST_CLOCK_TIME_IS_VALID (cstop))
|
|
GST_BUFFER_DURATION (outbuf) = cstop - cstart;
|
|
}
|
|
|
|
ret = gst_pad_push (dvdec->srcpad, outbuf);
|
|
|
|
skip:
|
|
dvdec->video_offset++;
|
|
|
|
done:
|
|
gst_buffer_unmap (buf, &map);
|
|
gst_buffer_unref (buf);
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
wrong_size:
|
|
{
|
|
GST_ELEMENT_ERROR (dvdec, STREAM, DECODE,
|
|
(NULL), ("Input buffer too small"));
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
parse_header_error:
|
|
{
|
|
GST_ELEMENT_ERROR (dvdec, STREAM, DECODE,
|
|
(NULL), ("Error parsing DV header"));
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
not_negotiated:
|
|
{
|
|
GST_DEBUG_OBJECT (dvdec, "could not negotiate output");
|
|
if (GST_PAD_IS_FLUSHING (dvdec->srcpad))
|
|
ret = GST_FLOW_FLUSHING;
|
|
else
|
|
ret = GST_FLOW_NOT_NEGOTIATED;
|
|
goto done;
|
|
}
|
|
flushing:
|
|
{
|
|
GST_DEBUG_OBJECT (dvdec, "have no current caps");
|
|
ret = GST_FLOW_FLUSHING;
|
|
goto done;
|
|
}
|
|
no_buffer:
|
|
{
|
|
GST_DEBUG_OBJECT (dvdec, "could not allocate buffer");
|
|
goto done;
|
|
}
|
|
|
|
dropping:
|
|
{
|
|
GST_DEBUG_OBJECT (dvdec,
|
|
"dropping buffer since it's out of the configured segment");
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_dvdec_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstDVDec *dvdec = GST_DVDEC (element);
|
|
GstStateChangeReturn ret;
|
|
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
dvdec->decoder =
|
|
dv_decoder_new (0, dvdec->clamp_luma, dvdec->clamp_chroma);
|
|
dvdec->decoder->quality = qualities[dvdec->quality];
|
|
dv_set_error_log (dvdec->decoder, NULL);
|
|
gst_video_info_init (&dvdec->vinfo);
|
|
gst_segment_init (&dvdec->segment, GST_FORMAT_UNDEFINED);
|
|
dvdec->src_negotiated = FALSE;
|
|
dvdec->sink_negotiated = FALSE;
|
|
dvdec->need_segment = FALSE;
|
|
/*
|
|
* Enable this function call when libdv2 0.100 or higher is more
|
|
* common
|
|
*/
|
|
/* dv_set_quality (dvdec->decoder, qualities [dvdec->quality]); */
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
dv_decoder_free (dvdec->decoder);
|
|
dvdec->decoder = NULL;
|
|
if (dvdec->pool) {
|
|
gst_buffer_pool_set_active (dvdec->pool, FALSE);
|
|
gst_object_unref (dvdec->pool);
|
|
dvdec->pool = NULL;
|
|
}
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_dvdec_set_property (GObject * object, guint prop_id, const GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstDVDec *dvdec = GST_DVDEC (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_CLAMP_LUMA:
|
|
dvdec->clamp_luma = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_CLAMP_CHROMA:
|
|
dvdec->clamp_chroma = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_QUALITY:
|
|
dvdec->quality = g_value_get_enum (value);
|
|
if ((dvdec->quality < 0) || (dvdec->quality > 5))
|
|
dvdec->quality = 0;
|
|
break;
|
|
case PROP_DECODE_NTH:
|
|
dvdec->drop_factor = g_value_get_int (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_dvdec_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstDVDec *dvdec = GST_DVDEC (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_CLAMP_LUMA:
|
|
g_value_set_boolean (value, dvdec->clamp_luma);
|
|
break;
|
|
case PROP_CLAMP_CHROMA:
|
|
g_value_set_boolean (value, dvdec->clamp_chroma);
|
|
break;
|
|
case PROP_QUALITY:
|
|
g_value_set_enum (value, dvdec->quality);
|
|
break;
|
|
case PROP_DECODE_NTH:
|
|
g_value_set_int (value, dvdec->drop_factor);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|