mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-27 04:01:08 +00:00
Code Issues 1 Projects Releases Wiki Activity

ext/jpeg/gstjpegdec.*: API: Added IDCT method property

Browse source 
Original commit message from CVS:
* ext/jpeg/gstjpegdec.c: (gst_idct_method_get_type),
(gst_jpeg_dec_class_init), (gst_jpeg_dec_init),
(gst_jpeg_dec_decode_indirect), (gst_jpeg_dec_decode_direct),
(gst_jpeg_dec_chain), (gst_jpeg_dec_sink_event),
(gst_jpeg_dec_set_property), (gst_jpeg_dec_get_property):
* ext/jpeg/gstjpegdec.h:
API: Added IDCT method property
Small cleanups.
Avoid dynamic allocation of trivial fixed structure.
Allocate enough space for temp 4:4:4 YUV buffers. Fixes #343661.
This commit is contained in:
Wim Taymans 2006-06-09 17:12:52 +00:00
parent fef3b183b2
commit 78d078e986
3 changed files with 146 additions and 36 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
ChangeLog
View file

@ -1,3 +1,16 @@
2006-06-09 Wim Taymans <wim@fluendo.com>
* ext/jpeg/gstjpegdec.c: (gst_idct_method_get_type),
(gst_jpeg_dec_class_init), (gst_jpeg_dec_init),
(gst_jpeg_dec_decode_indirect), (gst_jpeg_dec_decode_direct),
(gst_jpeg_dec_chain), (gst_jpeg_dec_sink_event),
(gst_jpeg_dec_set_property), (gst_jpeg_dec_get_property):
* ext/jpeg/gstjpegdec.h:
API: Added IDCT method property
Small cleanups.
Avoid dynamic allocation of trivial fixed structure.
Allocate enough space for temp 4:4:4 YUV buffers. Fixes #343661.
2006-06-07 Zaheer Abbas Merali <zaheerabbas at merali dot org>
* configure.ac:

162
ext/jpeg/gstjpegdec.c
View file

@ -32,13 +32,39 @@ static const GstElementDetails gst_jpeg_dec_details =
GST_ELEMENT_DETAILS ("JPEG image decoder",
"Codec/Decoder/Image",
"Decode images from JPEG format",
"Wim Taymans <wim.taymans@tvd.be>");
"Wim Taymans <wim@fluendo.com>");
#define MIN_WIDTH 16
#define MAX_WIDTH 4096
#define MIN_HEIGHT 16
#define MAX_HEIGHT 4096
#define DEFAULT_IDCT_METHOD JDCT_FASTEST
enum
{
PROP_0,
PROP_IDCT_METHOD
};
#define GST_TYPE_IDCT_METHOD (gst_idct_method_get_type())
static GType
gst_idct_method_get_type (void)
{
static GType idct_method_type = 0;
static const GEnumValue idct_method[] = {
{JDCT_ISLOW, "Slow but accurate integer algorithm", "islow"},
{JDCT_IFAST, "Faster, less accurate integer method", "ifast"},
{JDCT_FLOAT, "Floating-point: accurate, fast on fast HW", "float"},
{0, NULL, NULL},
};
if (!idct_method_type) {
idct_method_type = g_enum_register_static ("GstIDCTMethod", idct_method);
}
return idct_method_type;
}
static GstStaticPadTemplate gst_jpeg_dec_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
@ -77,6 +103,11 @@ static void gst_jpeg_dec_base_init (gpointer g_class);
static void gst_jpeg_dec_class_init (GstJpegDecClass * klass);
static void gst_jpeg_dec_init (GstJpegDec * jpegdec);
static void gst_jpeg_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_jpeg_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstFlowReturn gst_jpeg_dec_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_jpeg_dec_setcaps (GstPad * pad, GstCaps * caps);
static gboolean gst_jpeg_dec_sink_event (GstPad * pad, GstEvent * event);
@ -147,6 +178,13 @@ gst_jpeg_dec_class_init (GstJpegDecClass * klass)
parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize = gst_jpeg_dec_finalize;
gobject_class->set_property = gst_jpeg_dec_set_property;
gobject_class->get_property = gst_jpeg_dec_get_property;
g_object_class_install_property (gobject_class, PROP_IDCT_METHOD,
g_param_spec_enum ("idct-method", "IDCT Method",
"The IDCT algorithm to use", GST_TYPE_IDCT_METHOD,
DEFAULT_IDCT_METHOD, G_PARAM_READWRITE));
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_jpeg_dec_change_state);
@ -247,6 +285,7 @@ gst_jpeg_dec_init (GstJpegDec * dec)
dec->srcpad =
gst_pad_new_from_static_template (&gst_jpeg_dec_src_pad_template, "src");
gst_pad_use_fixed_caps (dec->srcpad);
gst_element_add_pad (GST_ELEMENT (dec), dec->srcpad);
dec->segment = gst_segment_new ();
@ -268,6 +307,9 @@ gst_jpeg_dec_init (GstJpegDec * dec)
dec->cinfo.src->resync_to_restart = gst_jpeg_dec_resync_to_restart;
dec->cinfo.src->term_source = gst_jpeg_dec_term_source;
dec->jsrc.dec = dec;
/* init properties */
dec->idct_method = DEFAULT_IDCT_METHOD;
}
static inline gboolean
@ -638,13 +680,17 @@ gst_jpeg_dec_decode_indirect (GstJpegDec * dec, guchar * base[3],
guchar * last[3], guint width, guint height, gint r_v, gint r_h)
{
guchar y[16][MAX_WIDTH];
guchar u[8][MAX_WIDTH / 2];
guchar v[8][MAX_WIDTH / 2];
guchar u[16][MAX_WIDTH];
guchar v[16][MAX_WIDTH];
guchar *y_rows[16] = { y[0], y[1], y[2], y[3], y[4], y[5], y[6], y[7],
y[8], y[9], y[10], y[11], y[12], y[13], y[14], y[15]
};
guchar *u_rows[8] = { u[0], u[1], u[2], u[3], u[4], u[5], u[6], u[7] };
guchar *v_rows[8] = { v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7] };
guchar *u_rows[16] = { u[0], u[1], u[2], u[3], u[4], u[5], u[6], u[7],
u[8], u[9], u[10], u[11], u[12], u[13], u[14], u[15]
};
guchar *v_rows[16] = { v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7],
v[8], v[9], v[10], v[11], v[12], v[13], v[14], v[15]
};
guchar **scanarray[3] = { y_rows, u_rows, v_rows };
gint i, j, k;
@ -687,11 +733,14 @@ gst_jpeg_dec_decode_direct (GstJpegDec * dec, guchar * base[3],
guchar * last[3], guint width, guint height, gint r_v)
{
guchar **line[3]; /* the jpeg line buffer */
guchar *y[4 * DCTSIZE]; /* alloc enough for the lines */
guchar *u[4 * DCTSIZE];
guchar *v[4 * DCTSIZE];
gint i, j, k;
line[0] = g_new0 (guchar *, (r_v * DCTSIZE));
line[1] = g_new0 (guchar *, (r_v * DCTSIZE));
line[2] = g_new0 (guchar *, (r_v * DCTSIZE));
line[0] = y;
line[1] = u;
line[2] = v;
/* let jpeglib decode directly into our final buffer */
GST_DEBUG_OBJECT (dec, "decoding directly into output buffer");
@ -716,13 +765,8 @@ gst_jpeg_dec_decode_direct (GstJpegDec * dec, guchar * base[3],
}
jpeg_read_raw_data (&dec->cinfo, line, r_v * DCTSIZE);
}
g_free (line[0]);
g_free (line[1]);
g_free (line[2]);
}
static GstFlowReturn
gst_jpeg_dec_chain (GstPad * pad, GstBuffer * buf)
{
@ -732,27 +776,20 @@ gst_jpeg_dec_chain (GstPad * pad, GstBuffer * buf)
gulong size;
guchar *data, *outdata;
guchar *base[3], *last[3];
guint img_len;
guint img_len, outsize;
gint width, height;
gint r_h, r_v;
gint i;
guint code;
GstClockTime timestamp, duration;
dec = GST_JPEG_DEC (GST_OBJECT_PARENT (pad));
dec = GST_JPEG_DEC (gst_pad_get_parent (pad));
timestamp = GST_BUFFER_TIMESTAMP (buf);
duration = GST_BUFFER_DURATION (buf);
/*
GST_LOG_OBJECT (dec, "Received buffer: %d bytes, ts=%" GST_TIME_FORMAT
", dur=%" GST_TIME_FORMAT, GST_BUFFER_SIZE (buf),
GST_TIME_ARGS (timestamp), GST_TIME_ARGS (duration));
*/
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
if (GST_CLOCK_TIME_IS_VALID (timestamp))
dec->next_ts = timestamp;
}
if (dec->tempbuf) {
dec->tempbuf = gst_buffer_join (dec->tempbuf, buf);
@ -798,28 +835,34 @@ gst_jpeg_dec_chain (GstPad * pad, GstBuffer * buf)
GST_LOG_OBJECT (dec, "reading header %02x %02x %02x %02x", data[0], data[1],
data[2], data[3]);
/* read header */
jpeg_read_header (&dec->cinfo, TRUE);
r_h = dec->cinfo.cur_comp_info[0]->h_samp_factor;
r_v = dec->cinfo.cur_comp_info[0]->v_samp_factor;
GST_DEBUG ("r_h = %d, r_v = %d", r_h, r_v);
GST_DEBUG ("num_components=%d, comps_in_scan=%d\n",
GST_DEBUG ("num_components=%d, comps_in_scan=%d",
dec->cinfo.num_components, dec->cinfo.comps_in_scan);
for (i = 0; i < dec->cinfo.comps_in_scan; ++i) {
GST_DEBUG ("[%d] h_samp_factor=%d, v_samp_factor=%d\n", i,
GST_DEBUG ("[%d] h_samp_factor=%d, v_samp_factor=%d", i,
dec->cinfo.cur_comp_info[i]->h_samp_factor,
dec->cinfo.cur_comp_info[i]->v_samp_factor);
}
/* prepare for raw output */
dec->cinfo.do_fancy_upsampling = FALSE;
dec->cinfo.do_block_smoothing = FALSE;
dec->cinfo.out_color_space = JCS_YCbCr;
dec->cinfo.dct_method = JDCT_IFAST;
dec->cinfo.dct_method = dec->idct_method;
dec->cinfo.raw_data_out = TRUE;
GST_LOG_OBJECT (dec, "starting decompress");
guarantee_huff_tables (&dec->cinfo);
jpeg_start_decompress (&dec->cinfo);
width = dec->cinfo.output_width;
height = dec->cinfo.output_height;
@ -849,7 +892,6 @@ gst_jpeg_dec_chain (GstPad * pad, GstBuffer * buf)
GST_DEBUG_OBJECT (dec, "max_v_samp_factor=%d",
dec->cinfo.max_v_samp_factor);
gst_pad_use_fixed_caps (dec->srcpad);
gst_pad_set_caps (dec->srcpad, caps);
gst_caps_unref (caps);
@ -857,14 +899,20 @@ gst_jpeg_dec_chain (GstPad * pad, GstBuffer * buf)
dec->caps_height = height;
dec->caps_framerate_numerator = dec->framerate_numerator;
dec->caps_framerate_denominator = dec->framerate_denominator;
dec->outsize = I420_SIZE (width, height);
}
ret = gst_pad_alloc_buffer_and_set_caps (dec->srcpad, GST_BUFFER_OFFSET_NONE,
I420_SIZE (width, height), GST_PAD_CAPS (dec->srcpad), &outbuf);
dec->outsize, GST_PAD_CAPS (dec->srcpad), &outbuf);
if (ret != GST_FLOW_OK)
goto alloc_failed;
outdata = GST_BUFFER_DATA (outbuf);
outsize = GST_BUFFER_SIZE (outbuf);
GST_LOG_OBJECT (dec, "width %d, height %d, buffer size %d, required size %d",
width, height, outsize, dec->outsize);
GST_BUFFER_TIMESTAMP (outbuf) = dec->next_ts;
if (dec->packetized && GST_CLOCK_TIME_IS_VALID (dec->next_ts)) {
@ -885,9 +933,6 @@ gst_jpeg_dec_chain (GstPad * pad, GstBuffer * buf)
}
GST_BUFFER_DURATION (outbuf) = duration;
GST_LOG_OBJECT (dec, "width %d, height %d, buffer size %d, required size %d",
width, height, GST_BUFFER_SIZE (outbuf), I420_SIZE (width, height));
/* mind the swap, jpeglib outputs blue chroma first */
base[0] = outdata + I420_Y_OFFSET (width, height);
base[1] = outdata + I420_U_OFFSET (width, height);
@ -943,8 +988,7 @@ gst_jpeg_dec_chain (GstPad * pad, GstBuffer * buf)
GST_BUFFER_DURATION (outbuf) = clip_stop - clip_start;
}
} else {
GST_WARNING_OBJECT (dec,
"Outgoing buffer is outsided configured segment");
GST_WARNING_OBJECT (dec, "Outgoing buffer is outside configured segment");
}
}
@ -965,13 +1009,18 @@ done:
gst_buffer_unref (dec->tempbuf);
dec->tempbuf = buf;
}
exit:
gst_object_unref (dec);
return ret;
/* special cases */
need_more_data:
{
GST_LOG_OBJECT (dec, "we need more data");
return GST_FLOW_OK;
ret = GST_FLOW_OK;
goto exit;
}
/* ERRORS */
wrong_size:
@ -1002,7 +1051,7 @@ alloc_failed:
("Buffer allocation failed, reason: %s", reason),
("Buffer allocation failed, reason: %s", reason));
}
return ret;
goto exit;
}
}
@ -1028,14 +1077,17 @@ gst_jpeg_dec_sink_event (GstPad * pad, GstEvent * event)
/* Once -good depends on core >= 0.10.6, use newsegment_full */
gst_event_parse_new_segment (event, &update, &rate, &format,
&start, &stop, &position);
GST_DEBUG_OBJECT (dec, "Got NEWSEGMENT [%" GST_TIME_FORMAT
" - %" GST_TIME_FORMAT " / %" GST_TIME_FORMAT "]",
GST_TIME_ARGS (start), GST_TIME_ARGS (stop),
GST_TIME_ARGS (position));
gst_segment_set_newsegment (dec->segment, update, rate, format,
start, stop, position);
}
break;
}
default:
break;
}
@ -1045,6 +1097,44 @@ gst_jpeg_dec_sink_event (GstPad * pad, GstEvent * event)
return ret;
}
static void
gst_jpeg_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstJpegDec *dec;
dec = GST_JPEG_DEC (object);
switch (prop_id) {
case PROP_IDCT_METHOD:
dec->idct_method = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_jpeg_dec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstJpegDec *dec;
dec = GST_JPEG_DEC (object);
switch (prop_id) {
case PROP_IDCT_METHOD:
g_value_set_enum (value, dec->idct_method);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_jpeg_dec_change_state (GstElement * element, GstStateChange transition)
{

7
ext/jpeg/gstjpegdec.h
View file

@ -86,6 +86,13 @@ struct _GstJpegDec {
gint caps_framerate_denominator;
gint caps_width;
gint caps_height;
gint outsize;
/* temp space for samples */
gboolean direct;
guchar **scanarray[3];
/* properties */
gint idct_method;
struct jpeg_decompress_struct cinfo;
struct GstJpegDecErrorMgr jerr;