#include <string.h>
#include <gst/gst.h>
#include "gstpngenc.h"
-#include <gst/video/video.h>
#include <zlib.h>
GST_DEBUG_CATEGORY_STATIC (pngenc_debug);
);
static GstStaticPadTemplate pngenc_sink_template =
- GST_STATIC_PAD_TEMPLATE ("sink",
+GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
- GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBA ";" GST_VIDEO_CAPS_RGB ";"
- GST_VIDEO_CAPS_GRAY8)
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ RGBA, RGB, GRAY8 }"))
);
/* static GstElementClass *parent_class = NULL; */
-GST_BOILERPLATE (GstPngEnc, gst_pngenc, GstElement, GST_TYPE_ELEMENT);
+G_DEFINE_TYPE (GstPngEnc, gst_pngenc, GST_TYPE_ELEMENT);
static void gst_pngenc_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_pngenc_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
-static GstFlowReturn gst_pngenc_chain (GstPad * pad, GstBuffer * data);
+static GstFlowReturn gst_pngenc_chain (GstPad * pad, GstObject * parent,
+ GstBuffer * data);
+static gboolean gst_pngenc_sink_event (GstPad * pad, GstObject * parent,
+ GstEvent * event);
static void
user_error_fn (png_structp png_ptr, png_const_charp error_msg)
}
static void
-gst_pngenc_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 (&pngenc_sink_template));
- gst_element_class_add_pad_template
- (element_class, gst_static_pad_template_get (&pngenc_src_template));
- gst_element_class_set_details_simple (element_class, "PNG image encoder",
- "Codec/Encoder/Image",
- "Encode a video frame to a .png image",
- "Jeremy SIMON <jsimon13@yahoo.fr>");
-}
-
-static void
gst_pngenc_class_init (GstPngEncClass * klass)
{
GObjectClass *gobject_class;
+ GstElementClass *element_class;
gobject_class = (GObjectClass *) klass;
-
- parent_class = g_type_class_peek_parent (klass);
+ element_class = (GstElementClass *) klass;
gobject_class->get_property = gst_pngenc_get_property;
gobject_class->set_property = gst_pngenc_set_property;
DEFAULT_COMPRESSION_LEVEL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ gst_element_class_add_pad_template
+ (element_class, gst_static_pad_template_get (&pngenc_sink_template));
+ gst_element_class_add_pad_template
+ (element_class, gst_static_pad_template_get (&pngenc_src_template));
+ gst_element_class_set_details_simple (element_class, "PNG image encoder",
+ "Codec/Encoder/Image",
+ "Encode a video frame to a .png image",
+ "Jeremy SIMON <jsimon13@yahoo.fr>");
+
GST_DEBUG_CATEGORY_INIT (pngenc_debug, "pngenc", 0, "PNG image encoder");
}
static gboolean
-gst_pngenc_setcaps (GstPad * pad, GstCaps * caps)
+gst_pngenc_setcaps (GstPngEnc * pngenc, GstCaps * caps)
{
- GstPngEnc *pngenc;
- GstVideoFormat format;
int fps_n, fps_d;
GstCaps *pcaps;
gboolean ret;
+ GstVideoInfo info;
- pngenc = GST_PNGENC (gst_pad_get_parent (pad));
-
- ret = gst_video_format_parse_caps (caps, &format,
- &pngenc->width, &pngenc->height);
- if (G_LIKELY (ret))
- ret = gst_video_parse_caps_framerate (caps, &fps_n, &fps_d);
+ ret = gst_video_info_from_caps (&info, caps);
if (G_UNLIKELY (!ret))
goto done;
- switch (format) {
+ pngenc->info = info;
+
+ switch (GST_VIDEO_INFO_FORMAT (&info)) {
case GST_VIDEO_FORMAT_RGBA:
pngenc->png_color_type = PNG_COLOR_TYPE_RGBA;
break;
goto done;
}
+ pngenc->width = GST_VIDEO_INFO_WIDTH (&info);
+ pngenc->height = GST_VIDEO_INFO_HEIGHT (&info);
+ fps_n = GST_VIDEO_INFO_FPS_N (&info);
+ fps_d = GST_VIDEO_INFO_FPS_D (&info);
+
if (G_UNLIKELY (pngenc->width < 16 || pngenc->width > 1000000 ||
pngenc->height < 16 || pngenc->height > 1000000)) {
ret = FALSE;
goto done;
}
- pngenc->stride = gst_video_format_get_row_stride (format, 0, pngenc->width);
-
pcaps = gst_caps_new_simple ("image/png",
"width", G_TYPE_INT, pngenc->width,
"height", G_TYPE_INT, pngenc->height,
pngenc->height = 0;
}
- gst_object_unref (pngenc);
-
return ret;
}
static void
-gst_pngenc_init (GstPngEnc * pngenc, GstPngEncClass * g_class)
+gst_pngenc_init (GstPngEnc * pngenc)
{
/* sinkpad */
pngenc->sinkpad = gst_pad_new_from_static_template
(&pngenc_sink_template, "sink");
- gst_pad_set_chain_function (pngenc->sinkpad, gst_pngenc_chain);
- /* gst_pad_set_link_function (pngenc->sinkpad, gst_pngenc_sinklink); */
- /* gst_pad_set_getcaps_function (pngenc->sinkpad, gst_pngenc_sink_getcaps); */
- gst_pad_set_setcaps_function (pngenc->sinkpad, gst_pngenc_setcaps);
+ gst_pad_set_chain_function (pngenc->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_pngenc_chain));
+ gst_pad_set_event_function (pngenc->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_pngenc_sink_event));
gst_element_add_pad (GST_ELEMENT (pngenc), pngenc->sinkpad);
/* srcpad */
pngenc->srcpad = gst_pad_new_from_static_template
(&pngenc_src_template, "src");
- /* pngenc->srcpad = gst_pad_new ("src", GST_PAD_SRC); */
- /* gst_pad_set_getcaps_function (pngenc->srcpad, gst_pngenc_src_getcaps); */
- /* gst_pad_set_setcaps_function (pngenc->srcpad, gst_pngenc_setcaps); */
+ gst_pad_use_fixed_caps (pngenc->srcpad);
gst_element_add_pad (GST_ELEMENT (pngenc), pngenc->srcpad);
/* init settings */
user_write_data (png_structp png_ptr, png_bytep data, png_uint_32 length)
{
GstPngEnc *pngenc;
+ gsize size;
+ guint8 *bdata;
pngenc = (GstPngEnc *) png_get_io_ptr (png_ptr);
- if (pngenc->written + length >= GST_BUFFER_SIZE (pngenc->buffer_out)) {
+ bdata = gst_buffer_map (pngenc->buffer_out, &size, NULL, GST_MAP_WRITE);
+ if (pngenc->written + length >= size) {
+ gst_buffer_unmap (pngenc->buffer_out, data, -1);
GST_ERROR_OBJECT (pngenc, "output buffer bigger than the input buffer!?");
png_error (png_ptr, "output buffer bigger than the input buffer!?");
return;
}
- memcpy (GST_BUFFER_DATA (pngenc->buffer_out) + pngenc->written, data, length);
+ GST_DEBUG_OBJECT (pngenc, "writing %u bytes", (guint) length);
+
+ memcpy (bdata + pngenc->written, data, length);
+ gst_buffer_unmap (pngenc->buffer_out, data, -1);
pngenc->written += length;
}
static GstFlowReturn
-gst_pngenc_chain (GstPad * pad, GstBuffer * buf)
+gst_pngenc_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
GstPngEnc *pngenc;
gint row_index;
png_byte **row_pointers;
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *encoded_buf = NULL;
+ GstVideoFrame frame;
- pngenc = GST_PNGENC (gst_pad_get_parent (pad));
+ pngenc = GST_PNGENC (parent);
GST_DEBUG_OBJECT (pngenc, "BEGINNING");
if (G_UNLIKELY (pngenc->width <= 0 || pngenc->height <= 0)) {
ret = GST_FLOW_NOT_NEGOTIATED;
- goto done;
+ goto exit;
}
- if (G_UNLIKELY (GST_BUFFER_SIZE (buf) < pngenc->height * pngenc->stride)) {
- gst_buffer_unref (buf);
+ if (!gst_video_frame_map (&frame, &pngenc->info, buf, GST_MAP_READ)) {
GST_ELEMENT_ERROR (pngenc, STREAM, FORMAT, (NULL),
- ("Provided input buffer is too small, caps problem?"));
+ ("Failed to map video frame, caps problem?"));
ret = GST_FLOW_ERROR;
- goto done;
+ goto exit;
}
/* initialize png struct stuff */
pngenc->png_struct_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING,
(png_voidp) NULL, user_error_fn, user_warning_fn);
if (pngenc->png_struct_ptr == NULL) {
- gst_buffer_unref (buf);
GST_ELEMENT_ERROR (pngenc, LIBRARY, INIT, (NULL),
("Failed to initialize png structure"));
ret = GST_FLOW_ERROR;
pngenc->png_info_ptr = png_create_info_struct (pngenc->png_struct_ptr);
if (!pngenc->png_info_ptr) {
- gst_buffer_unref (buf);
png_destroy_write_struct (&(pngenc->png_struct_ptr), (png_infopp) NULL);
GST_ELEMENT_ERROR (pngenc, LIBRARY, INIT, (NULL),
("Failed to initialize the png info structure"));
/* non-0 return is from a longjmp inside of libpng */
if (setjmp (png_jmpbuf (pngenc->png_struct_ptr)) != 0) {
- gst_buffer_unref (buf);
png_destroy_write_struct (&pngenc->png_struct_ptr, &pngenc->png_info_ptr);
GST_ELEMENT_ERROR (pngenc, LIBRARY, FAILED, (NULL),
("returning from longjmp"));
row_pointers = g_new (png_byte *, pngenc->height);
for (row_index = 0; row_index < pngenc->height; row_index++) {
- row_pointers[row_index] = GST_BUFFER_DATA (buf) +
- (row_index * pngenc->stride);
+ row_pointers[row_index] = GST_VIDEO_FRAME_COMP_DATA (&frame, 0) +
+ (row_index * GST_VIDEO_FRAME_COMP_STRIDE (&frame, 0));
}
/* allocate the output buffer */
pngenc->buffer_out =
- gst_buffer_new_and_alloc (pngenc->height * pngenc->stride);
+ gst_buffer_new_and_alloc (pngenc->height * pngenc->width);
pngenc->written = 0;
png_write_info (pngenc->png_struct_ptr, pngenc->png_info_ptr);
g_free (row_pointers);
- encoded_buf = gst_buffer_create_sub (pngenc->buffer_out, 0, pngenc->written);
+ GST_DEBUG_OBJECT (pngenc, "written %d", pngenc->written);
+
+ encoded_buf =
+ gst_buffer_copy_region (pngenc->buffer_out, GST_BUFFER_COPY_MEMORY,
+ 0, pngenc->written);
png_destroy_info_struct (pngenc->png_struct_ptr, &pngenc->png_info_ptr);
png_destroy_write_struct (&pngenc->png_struct_ptr, (png_infopp) NULL);
- gst_buffer_copy_metadata (encoded_buf, buf, GST_BUFFER_COPY_TIMESTAMPS);
- gst_buffer_unref (buf);
- gst_buffer_set_caps (encoded_buf, GST_PAD_CAPS (pngenc->srcpad));
+
+ GST_BUFFER_TIMESTAMP (encoded_buf) = GST_BUFFER_TIMESTAMP (buf);
+ GST_BUFFER_DURATION (encoded_buf) = GST_BUFFER_DURATION (buf);
if ((ret = gst_pad_push (pngenc->srcpad, encoded_buf)) != GST_FLOW_OK)
goto done;
event = gst_event_new_eos ();
gst_pad_push_event (pngenc->srcpad, event);
- ret = GST_FLOW_UNEXPECTED;
+ ret = GST_FLOW_EOS;
}
done:
+ gst_video_frame_unmap (&frame);
+exit:
+ gst_buffer_unref (buf);
GST_DEBUG_OBJECT (pngenc, "END, ret:%d", ret);
if (pngenc->buffer_out != NULL) {
pngenc->buffer_out = NULL;
}
- gst_object_unref (pngenc);
return ret;
}
+static gboolean
+gst_pngenc_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
+{
+ GstPngEnc *enc;
+ gboolean res;
+
+ enc = GST_PNGENC (parent);
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_CAPS:
+ {
+ GstCaps *caps;
+
+ gst_event_parse_caps (event, &caps);
+ res = gst_pngenc_setcaps (enc, caps);
+ gst_event_unref (event);
+ break;
+ }
+ default:
+ res = gst_pad_push_event (enc->srcpad, event);
+ break;
+ }
+ return res;
+}
static void
gst_pngenc_get_property (GObject * object,
projects / platform / upstream / gst-plugins-good.git / commitdiff