static void
gst_jpegenc_resync (GstJpegEnc * jpegenc)
{
gint width, height;
gint i, j;
GST_DEBUG_OBJECT (jpegenc, "resync");
jpegenc->cinfo.image_width = width = jpegenc->width;
jpegenc->cinfo.image_height = height = jpegenc->height;
jpegenc->cinfo.input_components = jpegenc->channels;
GST_DEBUG_OBJECT (jpegenc, "width %d, height %d", width, height);
GST_DEBUG_OBJECT (jpegenc, "format %d", jpegenc->format);
if (gst_video_format_is_rgb (jpegenc->format)) {
GST_DEBUG_OBJECT (jpegenc, "RGB");
jpegenc->cinfo.in_color_space = JCS_RGB;
} else if (gst_video_format_is_gray (jpegenc->format)) {
GST_DEBUG_OBJECT (jpegenc, "gray");
jpegenc->cinfo.in_color_space = JCS_GRAYSCALE;
} else {
GST_DEBUG_OBJECT (jpegenc, "YUV");
jpegenc->cinfo.in_color_space = JCS_YCbCr;
}
/* input buffer size as max output */
jpegenc->bufsize = gst_video_format_get_size (jpegenc->format, width, height);
jpeg_set_defaults (&jpegenc->cinfo);
jpegenc->cinfo.raw_data_in = TRUE;
/* duh, libjpeg maps RGB to YUV ... and don't expect some conversion */
if (jpegenc->cinfo.in_color_space == JCS_RGB)
jpeg_set_colorspace (&jpegenc->cinfo, JCS_RGB);
GST_DEBUG_OBJECT (jpegenc, "h_max_samp=%d, v_max_samp=%d",
jpegenc->h_max_samp, jpegenc->v_max_samp);
/* image dimension info */
for (i = 0; i < jpegenc->channels; i++) {
GST_DEBUG_OBJECT (jpegenc, "comp %i: h_samp=%d, v_samp=%d", i,
jpegenc->h_samp[i], jpegenc->v_samp[i]);
jpegenc->cinfo.comp_info[i].h_samp_factor = jpegenc->h_samp[i];
jpegenc->cinfo.comp_info[i].v_samp_factor = jpegenc->v_samp[i];
jpegenc->line[i] = g_realloc (jpegenc->line[i],
jpegenc->v_max_samp * DCTSIZE * sizeof (char *));
if (!jpegenc->planar) {
for (j = 0; j < jpegenc->v_max_samp * DCTSIZE; j++) {
jpegenc->row[i][j] = g_realloc (jpegenc->row[i][j], width);
jpegenc->line[i][j] = jpegenc->row[i][j];
}
}
}
/* guard against a potential error in gst_jpegenc_term_destination
which occurs iff bufsize % 4 < free_space_remaining */
jpegenc->bufsize = GST_ROUND_UP_4 (jpegenc->bufsize);
jpeg_suppress_tables (&jpegenc->cinfo, TRUE);
GST_DEBUG_OBJECT (jpegenc, "resync done");
}
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_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 GstFlowReturn
gst_jasper_dec_negotiate (GstJasperDec * dec, jas_image_t * image)
{
GstFlowReturn flow_ret = GST_FLOW_OK;
gint width, height, channels;
gint i, j;
gboolean negotiate = FALSE;
jas_clrspc_t clrspc;
GstCaps *allowed_caps, *caps;
width = jas_image_width (image);
height = jas_image_height (image);
channels = jas_image_numcmpts (image);
GST_LOG_OBJECT (dec, "%d x %d, %d components", width, height, channels);
/* jp2c bitstream has no real colour space info (kept in container),
* so decoder may only pretend to know, where it really does not */
if (!jas_clrspc_isunknown (dec->clrspc)) {
clrspc = dec->clrspc;
GST_DEBUG_OBJECT (dec, "forcing container supplied colour space %d",
clrspc);
jas_image_setclrspc (image, clrspc);
} else
clrspc = jas_image_clrspc (image);
if (!width || !height || !channels || jas_clrspc_isunknown (clrspc))
goto fail_image;
if (dec->width != width || dec->height != height ||
dec->channels != channels || dec->clrspc != clrspc)
negotiate = TRUE;
if (channels != 3)
goto not_supported;
for (i = 0; i < channels; i++) {
gint cheight, cwidth, depth, sgnd;
cheight = jas_image_cmptheight (image, i);
cwidth = jas_image_cmptwidth (image, i);
depth = jas_image_cmptprec (image, i);
sgnd = jas_image_cmptsgnd (image, i);
GST_LOG_OBJECT (dec, "image component %d, %dx%d, depth %d, sgnd %d", i,
cwidth, cheight, depth, sgnd);
if (depth != 8 || sgnd)
goto not_supported;
if (dec->cheight[i] != cheight || dec->cwidth[i] != cwidth) {
dec->cheight[i] = cheight;
dec->cwidth[i] = cwidth;
negotiate = TRUE;
}
}
if (!negotiate && dec->format != GST_VIDEO_FORMAT_UNKNOWN)
goto done;
/* clear and refresh to new state */
flow_ret = GST_FLOW_NOT_NEGOTIATED;
dec->format = GST_VIDEO_FORMAT_UNKNOWN;
dec->width = width;
dec->height = height;
dec->channels = channels;
/* retrieve allowed caps, and find the first one that reasonably maps
* to the parameters of the colourspace */
caps = gst_pad_get_allowed_caps (dec->srcpad);
if (!caps) {
GST_DEBUG_OBJECT (dec, "... but no peer, using template caps");
/* need to copy because get_allowed_caps returns a ref,
and get_pad_template_caps doesn't */
caps = gst_caps_copy (gst_pad_get_pad_template_caps (dec->srcpad));
}
/* avoid lists of fourcc, etc */
allowed_caps = gst_caps_normalize (caps);
caps = NULL;
GST_LOG_OBJECT (dec, "allowed source caps %" GST_PTR_FORMAT, allowed_caps);
for (i = 0; i < gst_caps_get_size (allowed_caps); i++) {
GstVideoFormat format;
gboolean ok;
if (caps)
gst_caps_unref (caps);
caps = gst_caps_copy_nth (allowed_caps, i);
/* sigh, ds and _parse_caps need fixed caps for parsing, fixate */
gst_pad_fixate_caps (dec->srcpad, caps);
GST_LOG_OBJECT (dec, "checking caps %" GST_PTR_FORMAT, caps);
if (!gst_video_format_parse_caps (caps, &format, NULL, NULL))
continue;
if (gst_video_format_is_rgb (format) &&
jas_clrspc_fam (clrspc) == JAS_CLRSPC_FAM_RGB) {
GST_DEBUG_OBJECT (dec, "trying RGB");
if ((dec->cmpt[0] = jas_image_getcmptbytype (image,
JAS_IMAGE_CT_COLOR (JAS_CLRSPC_CHANIND_RGB_R))) < 0 ||
(dec->cmpt[1] = jas_image_getcmptbytype (image,
JAS_IMAGE_CT_COLOR (JAS_CLRSPC_CHANIND_RGB_G))) < 0 ||
(dec->cmpt[2] = jas_image_getcmptbytype (image,
JAS_IMAGE_CT_COLOR (JAS_CLRSPC_CHANIND_RGB_B))) < 0) {
GST_DEBUG_OBJECT (dec, "missing RGB color component");
continue;
}
} else if (gst_video_format_is_yuv (format) &&
jas_clrspc_fam (clrspc) == JAS_CLRSPC_FAM_YCBCR) {
GST_DEBUG_OBJECT (dec, "trying YUV");
if ((dec->cmpt[0] = jas_image_getcmptbytype (image,
JAS_IMAGE_CT_COLOR (JAS_CLRSPC_CHANIND_YCBCR_Y))) < 0 ||
(dec->cmpt[1] = jas_image_getcmptbytype (image,
JAS_IMAGE_CT_COLOR (JAS_CLRSPC_CHANIND_YCBCR_CB))) < 0 ||
(dec->cmpt[2] = jas_image_getcmptbytype (image,
JAS_IMAGE_CT_COLOR (JAS_CLRSPC_CHANIND_YCBCR_CR))) < 0) {
GST_DEBUG_OBJECT (dec, "missing YUV color component");
continue;
}
} else
continue;
/* match format with validity checks */
ok = TRUE;
for (j = 0; j < channels; j++) {
gint cmpt;
cmpt = dec->cmpt[j];
if (dec->cwidth[cmpt] != gst_video_format_get_component_width (format, j,
width) ||
dec->cheight[cmpt] != gst_video_format_get_component_height (format,
j, height))
ok = FALSE;
}
/* commit to this format */
if (ok) {
dec->format = format;
break;
}
}
if (caps)
gst_caps_unref (caps);
gst_caps_unref (allowed_caps);
if (dec->format != GST_VIDEO_FORMAT_UNKNOWN) {
/* cache some video format properties */
for (j = 0; j < channels; ++j) {
dec->offset[j] = gst_video_format_get_component_offset (dec->format, j,
dec->width, dec->height);
dec->inc[j] = gst_video_format_get_pixel_stride (dec->format, j);
dec->stride[j] = gst_video_format_get_row_stride (dec->format, j,
dec->width);
}
dec->image_size = gst_video_format_get_size (dec->format, width, height);
dec->alpha = gst_video_format_has_alpha (dec->format);
if (dec->buf)
g_free (dec->buf);
dec->buf = g_new0 (glong, dec->width);
caps = gst_video_format_new_caps (dec->format, dec->width, dec->height,
dec->framerate_numerator, dec->framerate_denominator, 1, 1);
GST_DEBUG_OBJECT (dec, "Set format to %d, size to %dx%d", dec->format,
dec->width, dec->height);
if (!gst_pad_set_caps (dec->srcpad, caps))
flow_ret = GST_FLOW_NOT_NEGOTIATED;
else
flow_ret = GST_FLOW_OK;
gst_caps_unref (caps);
}
done:
return flow_ret;
/* ERRORS */
fail_image:
{
GST_DEBUG_OBJECT (dec, "Failed to process decoded image.");
flow_ret = GST_FLOW_NOT_NEGOTIATED;
goto done;
}
not_supported:
{
GST_DEBUG_OBJECT (dec, "Decoded image has unsupported colour space.");
GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL), ("Unsupported colorspace"));
flow_ret = GST_FLOW_ERROR;
goto done;
}
}
