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gst/videoparse/: Add a bunch of features: handle format specification, handle queries and conversion. Works much lik...

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Original commit message from CVS:
* gst/videoparse/README:
* gst/videoparse/gstvideoparse.c:
Add a bunch of features: handle format specification, handle
queries and conversion.  Works much like a normal parser now.
This commit is contained in:
David Schleef 2007-12-13 04:43:58 +00:00
parent 8dcd3dd27e
commit d499702646
4 changed files with 382 additions and 117 deletions
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7
ChangeLog
View file

@ -1,3 +1,10 @@
2007-12-12 David Schleef <ds@schleef.org>
* gst/videoparse/README:
* gst/videoparse/gstvideoparse.c:
Add a bunch of features: handle format specification, handle
queries and conversion. Works much like a normal parser now.
2007-12-12 Wim Taymans <wim.taymans@collabora.co.uk>
* gst/rtpmanager/gstrtpptdemux.c: (gst_rtp_pt_demux_finalize),

2
common

@ -1 +1 @@
Subproject commit 423e2ea96b5f79281f4dd20d734bd968b3d95e89
Subproject commit 4f261af78b1128862cb847afb1b7254b8f458834

23
gst/videoparse/README Normal file
View file

@ -0,0 +1,23 @@
videoparse
==========
The videoparse element is used to parse a file containing raw image
data.
Creating example data
=====================
gst-launch videotestsrc num_buffers=300 ! \
video/x-raw-yuv,format=\(fourcc\)I420,width=320,height=240 ! \
filesink location=raw
Reading example data
====================
gst-launch filesrc location=raw ! \
videoparse format=I420 width=320 height=240 framerate=30/1 ! \
xvimagesink

467
gst/videoparse/gstvideoparse.c
View file

@ -31,6 +31,8 @@
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
#include <gst/base/gstadapter.h>
#include <gst/video/video.h>
#define GST_TYPE_VIDEO_PARSE \
(gst_video_parse_get_type())
@ -50,17 +52,31 @@ struct _GstVideoParse
{
GstElement parent;
/* properties */
int width;
int height;
guint32 format;
int fps_n;
int fps_d;
int par_n;
int par_d;
/* private */
GstPad *sinkpad;
GstPad *srcpad;
int fps_n;
int fps_d;
GstAdapter *adapter;
int frame_num;
int blocksize;
gboolean discont;
int n_frames;
GstSegment segment;
int negotiated;
gboolean negotiated;
gboolean have_new_segment;
};
struct _GstVideoParseClass
@ -68,6 +84,13 @@ struct _GstVideoParseClass
GstElementClass parent_class;
};
typedef enum
{
GST_VIDEO_PARSE_FORMAT_I420,
GST_VIDEO_PARSE_FORMAT_YV12,
GST_VIDEO_PARSE_FORMAT_YUY2,
GST_VIDEO_PARSE_FORMAT_UYVY
} GstVideoParseFormat;
static void gst_video_parse_dispose (GObject * object);
@ -77,22 +100,25 @@ static void gst_video_parse_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstFlowReturn gst_video_parse_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_video_parse_event (GstPad * pad, GstEvent * event);
static gboolean gst_video_parse_set_caps (GstPad * pad, GstCaps * caps);
static gboolean gst_video_parse_sink_event (GstPad * pad, GstEvent * event);
static gboolean gst_video_parse_src_query (GstPad * pad, GstQuery * query);
static gboolean gst_video_parse_convert (GstVideoParse * vp,
GstFormat src_format, gint64 src_value,
GstFormat dest_format, gint64 * dest_value);
static void gst_video_parse_update_block_size (GstVideoParse * vp);
static GstStaticPadTemplate gst_video_parse_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ I420, YUY2, UYVY }")));
static GstStaticPadTemplate gst_video_parse_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ I420, YUY2, UYVY }")));
GST_DEBUG_CATEGORY_STATIC (gst_video_parse_debug);
#define GST_CAT_DEFAULT gst_video_parse_debug
@ -105,10 +131,36 @@ GST_ELEMENT_DETAILS ("Video Parse",
enum
{
ARG_0
ARG_0,
ARG_WIDTH,
ARG_HEIGHT,
ARG_FORMAT,
ARG_PAR,
ARG_FRAMERATE
};
#define GST_VIDEO_PARSE_FORMAT (gst_video_parse_format_get_type ())
static GType
gst_video_parse_format_get_type (void)
{
static GType video_parse_format_type = 0;
static const GEnumValue format_types[] = {
{GST_VIDEO_PARSE_FORMAT_I420, "I420", "I420"},
{GST_VIDEO_PARSE_FORMAT_YV12, "YV12", "YV12"},
{GST_VIDEO_PARSE_FORMAT_YUY2, "YUY2", "YUY2"},
{GST_VIDEO_PARSE_FORMAT_UYVY, "UYVY", "UYVY"},
{0, NULL, NULL}
};
if (!video_parse_format_type) {
video_parse_format_type =
g_enum_register_static ("GstVideoParseFormat", format_types);
}
return video_parse_format_type;
}
GST_BOILERPLATE (GstVideoParse, gst_video_parse, GstElement, GST_TYPE_ELEMENT);
static void
@ -137,6 +189,25 @@ gst_video_parse_class_init (GstVideoParseClass * klass)
gobject_class->get_property = gst_video_parse_get_property;
gobject_class->dispose = gst_video_parse_dispose;
g_object_class_install_property (gobject_class, ARG_WIDTH,
g_param_spec_int ("width", "Width", "Width of images in raw stream",
0, INT_MAX, 320, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_HEIGHT,
g_param_spec_int ("height", "Height", "Height of images in raw stream",
0, INT_MAX, 240, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_FORMAT,
g_param_spec_enum ("format", "Format", "Format of images in raw stream",
GST_VIDEO_PARSE_FORMAT, GST_VIDEO_PARSE_FORMAT_I420,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_FRAMERATE,
gst_param_spec_fraction ("framerate", "Frame Rate",
"Frame rate of images in raw stream", 0, 1, 100, 1, 25, 1,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_PAR,
gst_param_spec_fraction ("pixel_aspect_ratio", "Pixel Aspect Ratio",
"Pixel aspect ratio of images in raw stream", 1, 100, 100, 1, 1, 1,
G_PARAM_READWRITE));
}
static void
@ -148,15 +219,28 @@ gst_video_parse_init (GstVideoParse * vp, GstVideoParseClass * g_class)
gst_element_add_pad (GST_ELEMENT (vp), vp->sinkpad);
gst_pad_set_chain_function (vp->sinkpad, gst_video_parse_chain);
gst_pad_set_event_function (vp->sinkpad, gst_video_parse_event);
gst_pad_set_event_function (vp->sinkpad, gst_video_parse_sink_event);
vp->srcpad =
gst_pad_new_from_static_template (&gst_video_parse_src_pad_template,
"src");
gst_element_add_pad (GST_ELEMENT (vp), vp->srcpad);
gst_pad_set_setcaps_function (vp->srcpad, gst_video_parse_set_caps);
gst_pad_set_query_function (vp->srcpad, gst_video_parse_src_query);
if (1) {
gst_pad_set_query_function (vp->srcpad, gst_video_parse_src_query);
}
vp->adapter = gst_adapter_new ();
vp->width = 320;
vp->height = 240;
vp->format = 0;
vp->par_n = 1;
vp->par_d = 1;
vp->fps_n = 25;
vp->fps_d = 1;
gst_video_parse_update_block_size (vp);
}
static void
@ -171,97 +255,250 @@ static void
gst_video_parse_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
//GstVideoParse *vp = GST_VIDEO_PARSE (object);
GstVideoParse *vp = GST_VIDEO_PARSE (object);
switch (prop_id) {
case ARG_WIDTH:
vp->width = g_value_get_int (value);
break;
case ARG_HEIGHT:
vp->height = g_value_get_int (value);
break;
case ARG_FORMAT:
vp->format = g_value_get_int (value);
break;
case ARG_FRAMERATE:
vp->fps_n = gst_value_get_fraction_numerator (value);
vp->fps_d = gst_value_get_fraction_denominator (value);
break;
case ARG_PAR:
vp->par_n = gst_value_get_fraction_numerator (value);
vp->par_d = gst_value_get_fraction_denominator (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
gst_video_parse_update_block_size (vp);
}
static void
gst_video_parse_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
//GstVideoParse *vp = GST_VIDEO_PARSE (object);
GstVideoParse *vp = GST_VIDEO_PARSE (object);
switch (prop_id) {
case ARG_WIDTH:
g_value_set_int (value, vp->width);
break;
case ARG_HEIGHT:
g_value_set_int (value, vp->height);
break;
case ARG_FORMAT:
g_value_set_int (value, vp->format);
break;
case ARG_FRAMERATE:
gst_value_set_fraction (value, vp->fps_n, vp->fps_d);
break;
case ARG_PAR:
gst_value_set_fraction (value, vp->par_n, vp->par_d);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_video_parse_negotiate (GstVideoParse * vp)
static guint32
gst_video_parse_format_to_fourcc (GstVideoParseFormat format)
{
GstCaps *caps;
gboolean ret = FALSE;
caps = gst_pad_peer_get_caps (vp->srcpad);
caps = gst_caps_make_writable (caps);
gst_caps_truncate (caps);
if (!gst_caps_is_empty (caps)) {
gst_pad_fixate_caps (vp->srcpad, caps);
if (gst_caps_is_any (caps)) {
ret = TRUE;
} else if (gst_caps_is_fixed (caps)) {
/* yay, fixed caps, use those then */
gst_pad_set_caps (vp->srcpad, caps);
ret = TRUE;
}
switch (format) {
case GST_VIDEO_PARSE_FORMAT_I420:
return GST_MAKE_FOURCC ('I', '4', '2', '0');
case GST_VIDEO_PARSE_FORMAT_YV12:
return GST_MAKE_FOURCC ('Y', 'V', '1', '2');
case GST_VIDEO_PARSE_FORMAT_YUY2:
return GST_MAKE_FOURCC ('Y', 'U', 'Y', '2');
case GST_VIDEO_PARSE_FORMAT_UYVY:
return GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y');
}
return 0;
}
gst_caps_unref (caps);
void
gst_video_parse_update_block_size (GstVideoParse * vp)
{
vp->blocksize = vp->width * vp->height * 3 / 2;
}
return ret;
static void
gst_video_parse_reset (GstVideoParse * vp)
{
vp->n_frames = 0;
vp->discont = TRUE;
gst_segment_init (&vp->segment, GST_FORMAT_TIME);
gst_adapter_clear (vp->adapter);
}
static GstFlowReturn
gst_video_parse_chain (GstPad * pad, GstBuffer * buffer)
{
GstVideoParse *vp = GST_VIDEO_PARSE (gst_pad_get_parent (pad));
GstFlowReturn ret;
GstFlowReturn ret = GST_FLOW_OK;
GST_INFO ("here");
if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT))) {
GST_DEBUG_OBJECT (vp, "received DISCONT buffer");
vp->discont = TRUE;
}
if (!vp->negotiated) {
gst_video_parse_negotiate (vp);
GstCaps *caps;
caps = gst_caps_new_simple ("video/x-raw-yuv",
"width", G_TYPE_INT, vp->width,
"height", G_TYPE_INT, vp->height,
"format", GST_TYPE_FOURCC,
gst_video_parse_format_to_fourcc (vp->format), "framerate",
GST_TYPE_FRACTION, vp->fps_n, vp->fps_d, "pixel_aspect_ratio",
GST_TYPE_FRACTION, vp->par_n, vp->par_d, NULL);
gst_pad_set_caps (vp->srcpad, caps);
vp->negotiated = TRUE;
}
if (vp->fps_n) {
GST_BUFFER_TIMESTAMP (buffer) = vp->segment.start +
gst_util_uint64_scale (vp->frame_num, GST_SECOND * vp->fps_d,
vp->fps_n);
GST_BUFFER_DURATION (buffer) =
gst_util_uint64_scale (GST_SECOND, vp->fps_d, vp->fps_n);
} else {
GST_BUFFER_TIMESTAMP (buffer) = vp->segment.start;
GST_BUFFER_DURATION (buffer) = GST_CLOCK_TIME_NONE;
gst_adapter_push (vp->adapter, buffer);
while (gst_adapter_available (vp->adapter) >= vp->blocksize) {
buffer = gst_adapter_take_buffer (vp->adapter, vp->blocksize);
if (vp->fps_n) {
GST_BUFFER_TIMESTAMP (buffer) = vp->segment.start +
gst_util_uint64_scale (vp->n_frames, GST_SECOND * vp->fps_d,
vp->fps_n);
GST_BUFFER_DURATION (buffer) =
gst_util_uint64_scale (GST_SECOND, vp->fps_d, vp->fps_n);
} else {
GST_BUFFER_TIMESTAMP (buffer) = vp->segment.start;
GST_BUFFER_DURATION (buffer) = GST_CLOCK_TIME_NONE;
}
gst_buffer_set_caps (buffer, GST_PAD_CAPS (vp->srcpad));
if (vp->discont) {
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
vp->discont = FALSE;
}
vp->n_frames++;
ret = gst_pad_push (vp->srcpad, buffer);
if (ret != GST_FLOW_OK)
break;
}
gst_buffer_set_caps (buffer, GST_PAD_CAPS (vp->srcpad));
vp->frame_num++;
ret = gst_pad_push (vp->srcpad, buffer);
gst_object_unref (vp);
return ret;
}
static gboolean
gst_video_parse_event (GstPad * pad, GstEvent * event)
gst_video_parse_convert (GstVideoParse * vp,
GstFormat src_format, gint64 src_value,
GstFormat dest_format, gint64 * dest_value)
{
gboolean ret = FALSE;
GST_DEBUG ("converting value %" G_GINT64_FORMAT " from %s to %s",
src_value, gst_format_get_name (src_format),
gst_format_get_name (dest_format));
if (src_format == dest_format) {
*dest_value = src_value;
ret = TRUE;
}
/* bytes to frames */
if (src_format == GST_FORMAT_BYTES && dest_format == GST_FORMAT_DEFAULT) {
if (vp->blocksize != 0) {
*dest_value = gst_util_uint64_scale_int (src_value, 1, vp->blocksize);
} else {
GST_ERROR ("blocksize is 0");
*dest_value = 0;
}
ret = TRUE;
}
/* frames to bytes */
if (src_format == GST_FORMAT_DEFAULT && dest_format == GST_FORMAT_BYTES) {
*dest_value = gst_util_uint64_scale_int (src_value, vp->blocksize, 1);
ret = TRUE;
}
/* time to frames */
if (src_format == GST_FORMAT_TIME && dest_format == GST_FORMAT_DEFAULT) {
if (vp->fps_d != 0) {
*dest_value = gst_util_uint64_scale (src_value,
vp->fps_n, GST_SECOND * vp->fps_d);
} else {
GST_ERROR ("framerate denominator is 0");
*dest_value = 0;
}
ret = TRUE;
}
/* frames to time */
if (src_format == GST_FORMAT_DEFAULT && dest_format == GST_FORMAT_TIME) {
if (vp->fps_n != 0) {
*dest_value = gst_util_uint64_scale (src_value,
GST_SECOND * vp->fps_d, vp->fps_n);
} else {
GST_ERROR ("framerate numerator is 0");
*dest_value = 0;
}
ret = TRUE;
}
/* time to bytes */
if (src_format == GST_FORMAT_TIME && dest_format == GST_FORMAT_BYTES) {
if (vp->fps_d != 0) {
*dest_value = gst_util_uint64_scale (src_value,
vp->fps_n * vp->blocksize, GST_SECOND * vp->fps_d);
} else {
GST_ERROR ("framerate denominator is 0");
*dest_value = 0;
}
ret = TRUE;
}
/* bytes to time */
if (src_format == GST_FORMAT_BYTES && dest_format == GST_FORMAT_TIME) {
if (vp->fps_n != 0 && vp->blocksize != 0) {
*dest_value = gst_util_uint64_scale (src_value,
GST_SECOND * vp->fps_d, vp->fps_n * vp->blocksize);
} else {
GST_ERROR ("framerate denominator and/or blocksize is 0");
*dest_value = 0;
}
ret = TRUE;
}
GST_DEBUG ("ret=%d result %" G_GINT64_FORMAT, ret, *dest_value);
return ret;
}
static gboolean
gst_video_parse_sink_event (GstPad * pad, GstEvent * event)
{
GstVideoParse *vp = GST_VIDEO_PARSE (gst_pad_get_parent (pad));
gboolean ret;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_STOP:
gst_video_parse_reset (vp);
ret = gst_pad_push_event (vp->srcpad, event);
break;
case GST_EVENT_NEWSEGMENT:
{
GstClockTimeDiff start, stop, time;
@ -272,95 +509,93 @@ gst_video_parse_event (GstPad * pad, GstEvent * event)
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
&start, &stop, &time);
if (format == GST_FORMAT_TIME) {
gst_segment_set_newsegment_full (&vp->segment, update, rate, arate,
format, start, stop, time);
GST_DEBUG_OBJECT (vp, "update segment: %" GST_SEGMENT_FORMAT,
&vp->segment);
} else {
ret =
gst_video_parse_convert (vp, format, start, GST_FORMAT_TIME, &start);
ret &= gst_video_parse_convert (vp, format, stop, GST_FORMAT_TIME, &stop);
ret &= gst_video_parse_convert (vp, format, time, GST_FORMAT_TIME, &time);
if (!ret) {
GST_ERROR_OBJECT (vp,
"Segment doesn't have GST_FORMAT_TIME format (%d)", format);
gst_event_unref (event);
gst_object_unref (vp);
return FALSE;
"Failed converting to GST_FORMAT_TIME format (%d)", format);
break;
}
gst_segment_set_newsegment_full (&vp->segment, update, rate, arate,
GST_FORMAT_TIME, start, stop, time);
event = gst_event_new_new_segment (FALSE, vp->segment.rate,
GST_FORMAT_TIME, start, stop, time);
ret = gst_pad_push_event (vp->srcpad, event);
break;
}
default:
ret = gst_pad_event_default (vp->srcpad, event);
break;
}
ret = gst_pad_push_event (vp->srcpad, event);
gst_object_unref (vp);
return ret;
}
static gboolean
gst_video_parse_set_caps (GstPad * pad, GstCaps * caps)
{
GstVideoParse *vp = GST_VIDEO_PARSE (gst_pad_get_parent (pad));
GstStructure *s;
s = gst_caps_get_structure (caps, 0);
vp->fps_n = 0;
vp->fps_d = 1;
gst_structure_get_fraction (s, "framerate", &vp->fps_n, &vp->fps_d);
GST_ERROR_OBJECT (vp, "framerate %d/%d", vp->fps_n, vp->fps_d);
gst_object_unref (vp);
return TRUE;
}
static gboolean
gst_video_parse_src_query (GstPad * pad, GstQuery * query)
{
GstVideoParse *vp = GST_VIDEO_PARSE (gst_pad_get_parent (pad));
gboolean ret = TRUE;
gboolean ret = FALSE;
if (GST_QUERY_TYPE (query) == GST_QUERY_CONVERT) {
GstFormat src_fmt, dest_fmt;
gint64 src_val, dest_val;
GST_DEBUG ("src_query %s", gst_query_type_get_name (GST_QUERY_TYPE (query)));
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
if (src_fmt == dest_fmt) {
dest_val = src_val;
} else if (src_fmt == GST_FORMAT_DEFAULT && dest_fmt == GST_FORMAT_TIME) {
/* frames to time */
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
GstFormat format;
gint64 time, value;
if (vp->fps_n) {
dest_val = gst_util_uint64_scale (src_val, vp->fps_d * GST_SECOND,
vp->fps_d);
} else {
dest_val = 0;
}
} else if (src_fmt == GST_FORMAT_DEFAULT && dest_fmt == GST_FORMAT_TIME) {
/* time to frames */
GST_ERROR ("query position");
if (vp->fps_n) {
dest_val = gst_util_uint64_scale (src_val, vp->fps_n,
vp->fps_d * GST_SECOND);
} else {
dest_val = 0;
}
} else {
GST_DEBUG_OBJECT (vp, "query failed");
ret = FALSE;
gst_query_parse_position (query, &format, NULL);
time = gst_util_uint64_scale (vp->n_frames,
GST_SECOND * vp->fps_d, vp->fps_n);
ret = gst_video_parse_convert (vp, GST_FORMAT_TIME, time, format, &value);
gst_query_set_position (query, format, value);
break;
}
case GST_QUERY_DURATION:
GST_ERROR ("query duration");
ret = gst_pad_query (GST_PAD_PEER (vp->srcpad), query);
if (!ret)
goto error;
break;
case GST_QUERY_CONVERT:
{
GstFormat src_fmt, dest_fmt;
gint64 src_val, dest_val;
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
} else {
/* else forward upstream */
ret = gst_pad_peer_query (vp->sinkpad, query);
GST_ERROR ("query convert");
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
ret = gst_video_parse_convert (vp, src_fmt, src_val, dest_fmt, &dest_val);
if (!ret)
goto error;
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
break;
}
default:
/* else forward upstream */
ret = gst_pad_peer_query (vp->sinkpad, query);
break;
}
done:
gst_object_unref (vp);
return ret;
error:
GST_DEBUG_OBJECT (vp, "query failed");
goto done;
}
static gboolean