gstreamer/ext/jasper/gstjasperenc.c
2012-11-04 00:09:59 +00:00

565 lines
15 KiB
C

/* GStreamer Jasper based j2k image encoder
* Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sf.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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-jasperenc
*
* Encodes video to jpeg2000 images.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/video/video.h>
#include <string.h>
#include <jasper/jasper.h>
#include "gstjasperenc.h"
GST_DEBUG_CATEGORY_STATIC (gst_jasper_enc_debug);
#define GST_CAT_DEFAULT gst_jasper_enc_debug
enum
{
ARG_0,
};
static GstStaticPadTemplate gst_jasper_enc_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB "; " GST_VIDEO_CAPS_BGR "; "
GST_VIDEO_CAPS_RGBx "; " GST_VIDEO_CAPS_xRGB "; "
GST_VIDEO_CAPS_BGRx "; " GST_VIDEO_CAPS_xBGR "; "
GST_VIDEO_CAPS_YUV ("{ I420, YV12, v308 }"))
);
static GstStaticPadTemplate gst_jasper_enc_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("image/x-j2c, width = " GST_VIDEO_SIZE_RANGE ", height = "
GST_VIDEO_SIZE_RANGE ", fourcc = (GstFourcc) { sRGB, sYUV },"
"framerate = " GST_VIDEO_FPS_RANGE ", " "fields = (int) 1; "
"image/x-jpc, width = " GST_VIDEO_SIZE_RANGE ", height = "
GST_VIDEO_SIZE_RANGE ", fourcc = (GstFourcc) { sRGB, sYUV },"
"framerate = " GST_VIDEO_FPS_RANGE ", " "fields = (int) 1; "
"image/jp2")
);
static void gst_jasper_enc_reset (GstJasperEnc * enc);
static GstStateChangeReturn gst_jasper_enc_change_state (GstElement * element,
GstStateChange transition);
static gboolean gst_jasper_enc_sink_setcaps (GstPad * pad, GstCaps * caps);
static GstFlowReturn gst_jasper_enc_chain (GstPad * pad, GstBuffer * buffer);
/* minor trick:
* keep original naming but use unique name here for a happy type system
*/
static void
_do_init (GType object_type)
{
const GInterfaceInfo preset_interface_info = {
NULL, /* interface_init */
NULL, /* interface_finalize */
NULL /* interface_data */
};
g_type_add_interface_static (object_type, GST_TYPE_PRESET,
&preset_interface_info);
}
GST_BOILERPLATE_FULL (GstJasperEnc, gst_jasper_enc, GstElement,
GST_TYPE_ELEMENT, _do_init);
static void
gst_jasper_enc_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_jasper_enc_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_jasper_enc_sink_template));
gst_element_class_set_static_metadata (element_class,
"Jasper JPEG2000 image encoder", "Codec/Encoder/Image",
"Encodes video to JPEG2000 using jasper",
"Mark Nauwelaerts <mnauw@users.sf.net>");
}
/* initialize the plugin's class */
static void
gst_jasper_enc_class_init (GstJasperEncClass * klass)
{
GstElementClass *gstelement_class;
gstelement_class = (GstElementClass *) klass;
GST_DEBUG_CATEGORY_INIT (gst_jasper_enc_debug, "jasperenc", 0,
"Jasper JPEG2000 encoder");
/* FIXME add some encoder properties */
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_jasper_enc_change_state);
}
static void
gst_jasper_enc_init (GstJasperEnc * enc, GstJasperEncClass * klass)
{
enc->sinkpad =
gst_pad_new_from_static_template (&gst_jasper_enc_sink_template, "sink");
gst_pad_set_setcaps_function (enc->sinkpad,
GST_DEBUG_FUNCPTR (gst_jasper_enc_sink_setcaps));
gst_pad_set_chain_function (enc->sinkpad,
GST_DEBUG_FUNCPTR (gst_jasper_enc_chain));
gst_element_add_pad (GST_ELEMENT (enc), enc->sinkpad);
enc->srcpad =
gst_pad_new_from_static_template (&gst_jasper_enc_src_template, "src");
gst_pad_use_fixed_caps (enc->srcpad);
gst_element_add_pad (GST_ELEMENT (enc), enc->srcpad);
enc->buf = NULL;
gst_jasper_enc_reset (enc);
}
static void
gst_jasper_enc_reset (GstJasperEnc * enc)
{
if (enc->buf)
g_free (enc->buf);
enc->buf = NULL;
if (enc->image)
jas_image_destroy (enc->image);
enc->image = NULL;
enc->fmt = -1;
enc->mode = GST_JP2ENC_MODE_J2C;
enc->clrspc = JAS_CLRSPC_UNKNOWN;
enc->format = GST_VIDEO_FORMAT_UNKNOWN;
}
static gboolean
gst_jasper_enc_set_src_caps (GstJasperEnc * enc)
{
GstCaps *caps;
guint32 fourcc;
gboolean ret;
GstCaps *peercaps;
peercaps = gst_pad_peer_get_caps (enc->srcpad);
if (peercaps) {
guint i, n;
n = gst_caps_get_size (peercaps);
for (i = 0; i < n; i++) {
GstStructure *s = gst_caps_get_structure (peercaps, i);
const gchar *name = gst_structure_get_name (s);
if (!strcmp (name, "image/x-j2c")) {
enc->mode = GST_JP2ENC_MODE_J2C;
break;
} else if (!strcmp (name, "image/x-jpc")) {
enc->mode = GST_JP2ENC_MODE_JPC;
break;
} else if (!strcmp (name, "image/jp2")) {
enc->mode = GST_JP2ENC_MODE_JP2;
break;
}
}
gst_caps_unref (peercaps);
}
/* enumerated colourspace */
if (gst_video_format_is_rgb (enc->format)) {
fourcc = GST_MAKE_FOURCC ('s', 'R', 'G', 'B');
} else {
fourcc = GST_MAKE_FOURCC ('s', 'Y', 'U', 'V');
}
switch (enc->mode) {
case GST_JP2ENC_MODE_J2C:
caps =
gst_caps_new_simple ("image/x-j2c", "width", G_TYPE_INT, enc->width,
"height", G_TYPE_INT, enc->height, "fourcc", GST_TYPE_FOURCC, fourcc,
NULL);
break;
case GST_JP2ENC_MODE_JPC:
caps =
gst_caps_new_simple ("image/x-jpc", "width", G_TYPE_INT, enc->width,
"height", G_TYPE_INT, enc->height, "fourcc", GST_TYPE_FOURCC, fourcc,
NULL);
break;
case GST_JP2ENC_MODE_JP2:
caps = gst_caps_new_simple ("image/jp2", "width", G_TYPE_INT, enc->width,
"height", G_TYPE_INT, enc->height, "fourcc", GST_TYPE_FOURCC, fourcc,
NULL);
break;
default:
g_assert_not_reached ();
}
if (enc->fps_den > 0)
gst_caps_set_simple (caps,
"framerate", GST_TYPE_FRACTION, enc->fps_num, enc->fps_den, NULL);
if (enc->par_den > 0)
gst_caps_set_simple (caps,
"pixel-aspect-ratio", GST_TYPE_FRACTION, enc->par_num, enc->par_den,
NULL);
ret = gst_pad_set_caps (enc->srcpad, caps);
gst_caps_unref (caps);
return ret;
}
static gboolean
gst_jasper_enc_init_encoder (GstJasperEnc * enc)
{
jas_image_cmptparm_t param[GST_JASPER_ENC_MAX_COMPONENT];
gint i;
switch (enc->mode) {
case GST_JP2ENC_MODE_J2C:
case GST_JP2ENC_MODE_JPC:
enc->fmt = jas_image_strtofmt ((char *) "jpc");
break;
case GST_JP2ENC_MODE_JP2:
enc->fmt = jas_image_strtofmt ((char *) "jp2");
break;
}
if (gst_video_format_is_rgb (enc->format))
enc->clrspc = JAS_CLRSPC_SRGB;
else
enc->clrspc = JAS_CLRSPC_SYCBCR;
if (enc->buf) {
g_free (enc->buf);
enc->buf = NULL;
}
enc->buf = g_new0 (glong, enc->width);
if (enc->image) {
jas_image_destroy (enc->image);
enc->image = NULL;
}
for (i = 0; i < enc->channels; ++i) {
param[i].tlx = 0;
param[i].tly = 0;
param[i].prec = 8;
param[i].sgnd = 0;
param[i].height = enc->cheight[i];
param[i].width = enc->cwidth[i];
param[i].hstep = enc->height / param[i].height;
param[i].vstep = enc->width / param[i].width;
}
if (!(enc->image = jas_image_create (enc->channels, param, enc->clrspc)))
return FALSE;
return TRUE;
}
static gboolean
gst_jasper_enc_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstJasperEnc *enc;
GstVideoFormat format;
gint width, height;
gint fps_num, fps_den;
gint par_num, par_den;
gint i;
enc = GST_JASPER_ENC (GST_PAD_PARENT (pad));
/* get info from caps */
if (!gst_video_format_parse_caps (caps, &format, &width, &height))
goto refuse_caps;
/* optional; pass along if present */
fps_num = fps_den = -1;
par_num = par_den = -1;
gst_video_parse_caps_framerate (caps, &fps_num, &fps_den);
gst_video_parse_caps_pixel_aspect_ratio (caps, &par_num, &par_den);
if (width == enc->width && height == enc->height && enc->format == format
&& fps_num == enc->fps_num && fps_den == enc->fps_den
&& par_num == enc->par_num && par_den == enc->par_den)
return TRUE;
/* store input description */
enc->format = format;
enc->width = width;
enc->height = height;
enc->fps_num = fps_num;
enc->fps_den = fps_den;
enc->par_num = par_num;
enc->par_den = par_den;
/* prepare a cached image description */
enc->channels = 3 + (gst_video_format_has_alpha (format) ? 1 : 0);
for (i = 0; i < enc->channels; ++i) {
enc->cwidth[i] = gst_video_format_get_component_width (format, i, width);
enc->cheight[i] = gst_video_format_get_component_height (format, i, height);
enc->offset[i] = gst_video_format_get_component_offset (format, i, width,
height);
enc->stride[i] = gst_video_format_get_row_stride (format, i, width);
enc->inc[i] = gst_video_format_get_pixel_stride (format, i);
}
if (!gst_jasper_enc_set_src_caps (enc))
goto setcaps_failed;
if (!gst_jasper_enc_init_encoder (enc))
goto setup_failed;
return TRUE;
/* ERRORS */
setup_failed:
{
GST_ELEMENT_ERROR (enc, LIBRARY, SETTINGS, (NULL), (NULL));
return FALSE;
}
setcaps_failed:
{
GST_WARNING_OBJECT (enc, "Setting src caps failed");
GST_ELEMENT_ERROR (enc, LIBRARY, SETTINGS, (NULL), (NULL));
return FALSE;
}
refuse_caps:
{
GST_WARNING_OBJECT (enc, "refused caps %" GST_PTR_FORMAT, caps);
gst_object_unref (enc);
return FALSE;
}
}
static GstFlowReturn
gst_jasper_enc_get_data (GstJasperEnc * enc, guint8 * data, GstBuffer ** outbuf)
{
GstFlowReturn ret = GST_FLOW_OK;
jas_stream_t *stream = NULL;
gint i;
guint size, boxsize;
g_return_val_if_fail (outbuf != NULL, GST_FLOW_ERROR);
*outbuf = NULL;
boxsize = (enc->mode == GST_JP2ENC_MODE_J2C) ? 8 : 0;
if (!(stream = jas_stream_memopen (NULL, 0)))
goto fail_stream;
for (i = 0; i < enc->channels; ++i) {
gint x, y, cwidth, cheight, inc, stride, cmpt;
guint8 *row_pix, *in_pix;
glong *tb;
cmpt = i;
inc = enc->inc[i];
stride = enc->stride[i];
cheight = enc->cheight[cmpt];
cwidth = enc->cwidth[cmpt];
GST_LOG_OBJECT (enc,
"write component %d<=%d, size %dx%d, offset %d, inc %d, stride %d",
i, cmpt, cwidth, cheight, enc->offset[i], inc, stride);
row_pix = data + enc->offset[i];
for (y = 0; y < cheight; y++) {
in_pix = row_pix;
tb = enc->buf;
for (x = 0; x < cwidth; x++) {
*tb = *in_pix;
in_pix += inc;
tb++;
}
if (jas_image_writecmpt2 (enc->image, cmpt, 0, y, cwidth, 1, enc->buf))
goto fail_image;
row_pix += stride;
}
}
GST_LOG_OBJECT (enc, "all components written");
if (jas_image_encode (enc->image, stream, enc->fmt, (char *) "sop"))
goto fail_encode;
GST_LOG_OBJECT (enc, "image encoded");
size = jas_stream_length (stream);
ret = gst_pad_alloc_buffer_and_set_caps (enc->srcpad,
GST_BUFFER_OFFSET_NONE, size + boxsize, GST_PAD_CAPS (enc->srcpad),
outbuf);
if (ret != GST_FLOW_OK)
goto no_buffer;
data = GST_BUFFER_DATA (*outbuf);
if (jas_stream_flush (stream) ||
jas_stream_rewind (stream) < 0 ||
jas_stream_read (stream, data + boxsize, size) < size)
goto fail_image_out;
if (boxsize) {
/* write atom prefix */
GST_WRITE_UINT32_BE (data, size + 8);
GST_WRITE_UINT32_LE (data + 4, GST_MAKE_FOURCC ('j', 'p', '2', 'c'));
}
done:
if (stream)
jas_stream_close (stream);
return ret;
/* ERRORS */
fail_stream:
{
GST_DEBUG_OBJECT (enc, "Failed to create inputstream.");
goto fail;
}
fail_encode:
{
GST_DEBUG_OBJECT (enc, "Failed to encode image.");
goto fail;
}
fail_image:
{
GST_DEBUG_OBJECT (enc, "Failed to process input image.");
goto fail;
}
fail_image_out:
{
GST_DEBUG_OBJECT (enc, "Failed to process encoded image.");
goto fail;
}
fail:
{
if (*outbuf)
gst_buffer_unref (*outbuf);
*outbuf = NULL;
GST_ELEMENT_ERROR (enc, STREAM, ENCODE, (NULL), (NULL));
ret = GST_FLOW_ERROR;
goto done;
}
no_buffer:
{
GST_DEBUG_OBJECT (enc, "Failed to create outbuffer - %s",
gst_flow_get_name (ret));
goto done;
}
}
static GstFlowReturn
gst_jasper_enc_chain (GstPad * pad, GstBuffer * buf)
{
GstJasperEnc *enc;
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *outbuf = NULL;
guint8 *data;
gboolean discont = FALSE;
enc = GST_JASPER_ENC (gst_pad_get_parent (pad));
if (enc->fmt < 0)
goto not_negotiated;
GST_LOG_OBJECT (enc, "buffer with ts: %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
discont = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT);
/* now really feed the data to encoder */
data = GST_BUFFER_DATA (buf);
ret = gst_jasper_enc_get_data (enc, data, &outbuf);
if (outbuf) {
gst_buffer_copy_metadata (outbuf, buf, GST_BUFFER_COPY_TIMESTAMPS);
if (discont)
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
}
if (ret == GST_FLOW_OK && outbuf)
ret = gst_pad_push (enc->srcpad, outbuf);
done:
gst_buffer_unref (buf);
gst_object_unref (enc);
return ret;
/* ERRORS */
not_negotiated:
{
GST_ELEMENT_ERROR (enc, CORE, NEGOTIATION, (NULL),
("format wasn't negotiated before chain function"));
ret = GST_FLOW_NOT_NEGOTIATED;
goto done;
}
}
static GstStateChangeReturn
gst_jasper_enc_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstJasperEnc *enc = GST_JASPER_ENC (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (jas_init ())
goto fail_init;
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_jasper_enc_reset (enc);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
jas_cleanup ();
break;
default:
break;
}
return ret;
/* ERRORS */
fail_init:
{
GST_ELEMENT_ERROR (enc, LIBRARY, INIT, (NULL), (NULL));
return GST_STATE_CHANGE_FAILURE;
}
}