mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-30 13:41:48 +00:00
pnmenc: Port PNM Encoder to use GstVideoEncoder Class
https://bugzilla.gnome.org/show_bug.cgi?id=731943
This commit is contained in:
Sanjay NM
Thiago Santos
parent
15a2da8ba7
commit
00b33e2068
2 changed files with 202 additions and 170 deletions
|
|
@ -32,10 +32,6 @@
|
|||
* </refsect2>
|
||||
*/
|
||||
|
||||
/*
|
||||
* FIXME: Port to GstVideoEncoder
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include "config.h"
|
||||
#endif
|
||||
|
|
@ -45,6 +41,8 @@
|
|||
|
||||
#include <gst/gstutils.h>
|
||||
#include <gst/video/video.h>
|
||||
#include <gst/video/gstvideometa.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#include <string.h>
|
||||
|
||||
|
|
@ -65,7 +63,13 @@ static GstStaticPadTemplate src_pad_template =
|
|||
GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
|
||||
GST_STATIC_CAPS (MIME_ALL));
|
||||
|
||||
G_DEFINE_TYPE (GstPnmenc, gst_pnmenc, GST_TYPE_ELEMENT);
|
||||
G_DEFINE_TYPE (GstPnmenc, gst_pnmenc, GST_TYPE_VIDEO_ENCODER);
|
||||
#define parent_class gst_pnmenc_parent_class
|
||||
|
||||
static GstFlowReturn
|
||||
gst_pnmenc_handle_frame (GstVideoEncoder * encoder, GstVideoCodecFrame * frame);
|
||||
|
||||
static void gst_pnmenc_finalize (GObject * object);
|
||||
|
||||
static void
|
||||
gst_pnmenc_set_property (GObject * object, guint prop_id, const GValue * value,
|
||||
|
|
@ -75,10 +79,11 @@ gst_pnmenc_set_property (GObject * object, guint prop_id, const GValue * value,
|
|||
|
||||
switch (prop_id) {
|
||||
case GST_PNMENC_PROP_ASCII:
|
||||
if (g_value_get_boolean (value))
|
||||
if (g_value_get_boolean (value)) {
|
||||
s->info.encoding = GST_PNM_ENCODING_ASCII;
|
||||
else
|
||||
} else {
|
||||
s->info.encoding = GST_PNM_ENCODING_RAW;
|
||||
}
|
||||
s->info.fields |= GST_PNM_INFO_FIELDS_ENCODING;
|
||||
break;
|
||||
default:
|
||||
|
|
@ -103,161 +108,181 @@ gst_pnmenc_get_property (GObject * object, guint prop_id, GValue * value,
|
|||
}
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_pnmenc_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
||||
{
|
||||
GstPnmenc *s = GST_PNMENC (parent);
|
||||
GstFlowReturn r;
|
||||
gchar *header;
|
||||
GstBuffer *out;
|
||||
|
||||
if (s->info.width == 0 || s->info.height == 0 || s->info.fields == 0)
|
||||
goto not_negotiated;
|
||||
|
||||
/* Assumption: One buffer, one image. That is, always first write header. */
|
||||
header = g_strdup_printf ("P%i\n%i %i\n%i\n",
|
||||
s->info.type + 3 * (1 - s->info.encoding), s->info.width, s->info.height,
|
||||
s->info.max);
|
||||
out = gst_buffer_new_wrapped (header, strlen (header));
|
||||
if ((r = gst_pad_push (s->src, out)) != GST_FLOW_OK)
|
||||
goto out;
|
||||
|
||||
/* Need to convert from GStreamer rowstride to PNM rowstride */
|
||||
if (s->info.width % 4 != 0) {
|
||||
guint i_rowstride;
|
||||
guint o_rowstride;
|
||||
GstBuffer *obuf;
|
||||
guint i;
|
||||
GstMapInfo imap, omap;
|
||||
|
||||
if (s->info.type == GST_PNM_TYPE_PIXMAP) {
|
||||
o_rowstride = 3 * s->info.width;
|
||||
i_rowstride = GST_ROUND_UP_4 (o_rowstride);
|
||||
} else {
|
||||
o_rowstride = s->info.width;
|
||||
i_rowstride = GST_ROUND_UP_4 (o_rowstride);
|
||||
}
|
||||
|
||||
obuf = gst_buffer_new_and_alloc (o_rowstride * s->info.height);
|
||||
gst_buffer_map (obuf, &omap, GST_MAP_WRITE);
|
||||
gst_buffer_map (buf, &imap, GST_MAP_READ);
|
||||
for (i = 0; i < s->info.height; i++)
|
||||
memcpy (omap.data + o_rowstride * i, imap.data + i_rowstride * i,
|
||||
o_rowstride);
|
||||
gst_buffer_unmap (buf, &imap);
|
||||
gst_buffer_unmap (obuf, &omap);
|
||||
gst_buffer_unref (buf);
|
||||
buf = obuf;
|
||||
} else {
|
||||
/* Pass through the data. */
|
||||
buf = gst_buffer_make_writable (buf);
|
||||
}
|
||||
|
||||
/* We might need to convert to ASCII... */
|
||||
if (s->info.encoding == GST_PNM_ENCODING_ASCII) {
|
||||
GstBuffer *obuf;
|
||||
guint i, o;
|
||||
GstMapInfo imap, omap;
|
||||
|
||||
gst_buffer_map (buf, &imap, GST_MAP_READ);
|
||||
obuf = gst_buffer_new_and_alloc (imap.size * (4 + 1 / 20.));
|
||||
gst_buffer_map (obuf, &omap, GST_MAP_WRITE);
|
||||
for (i = o = 0; i < imap.size; i++) {
|
||||
g_snprintf ((char *) omap.data + o, 4, "%3i", imap.data[i]);
|
||||
o += 3;
|
||||
omap.data[o++] = ' ';
|
||||
if (!((i + 1) % 20))
|
||||
omap.data[o++] = '\n';
|
||||
}
|
||||
gst_buffer_unmap (buf, &imap);
|
||||
gst_buffer_unmap (obuf, &omap);
|
||||
gst_buffer_unref (buf);
|
||||
buf = obuf;
|
||||
}
|
||||
|
||||
r = gst_pad_push (s->src, buf);
|
||||
|
||||
out:
|
||||
|
||||
return r;
|
||||
|
||||
not_negotiated:
|
||||
{
|
||||
gst_buffer_unref (buf);
|
||||
return GST_FLOW_NOT_NEGOTIATED;
|
||||
}
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_pnmenc_setcaps (GstPnmenc * s, GstCaps * caps)
|
||||
{
|
||||
gboolean r;
|
||||
GstCaps *srccaps;
|
||||
|
||||
s->info.max = 255;
|
||||
s->info.fields = GST_PNM_INFO_FIELDS_MAX;
|
||||
|
||||
if (!gst_video_info_from_caps (&s->vinfo, caps))
|
||||
return FALSE;
|
||||
|
||||
if (GST_VIDEO_INFO_IS_RGB (&s->vinfo)) {
|
||||
s->info.type = GST_PNM_TYPE_PIXMAP;
|
||||
srccaps = gst_caps_from_string (MIME_PM);
|
||||
} else if (GST_VIDEO_INFO_IS_GRAY (&s->vinfo)) {
|
||||
s->info.type = GST_PNM_TYPE_GRAYMAP;
|
||||
srccaps = gst_caps_from_string (MIME_GM);
|
||||
} else {
|
||||
return FALSE;
|
||||
}
|
||||
r = gst_pad_set_caps (s->src, srccaps);
|
||||
gst_caps_unref (srccaps);
|
||||
s->info.fields |= GST_PNM_INFO_FIELDS_TYPE;
|
||||
|
||||
/* Remember width and height of the input data. */
|
||||
s->info.width = GST_VIDEO_INFO_WIDTH (&s->vinfo);
|
||||
s->info.height = GST_VIDEO_INFO_HEIGHT (&s->vinfo);
|
||||
s->info.fields |= GST_PNM_INFO_FIELDS_WIDTH | GST_PNM_INFO_FIELDS_HEIGHT;
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_pnmenc_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
||||
{
|
||||
GstPnmenc *s = GST_PNMENC (parent);
|
||||
gboolean r = FALSE;
|
||||
|
||||
switch (GST_EVENT_TYPE (event)) {
|
||||
case GST_EVENT_CAPS:
|
||||
{
|
||||
GstCaps *caps;
|
||||
|
||||
gst_event_parse_caps (event, &caps);
|
||||
r = gst_pnmenc_setcaps (s, caps);
|
||||
gst_event_unref (event);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
r = gst_pad_event_default (pad, parent, event);
|
||||
break;
|
||||
}
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_pnmenc_init (GstPnmenc * s)
|
||||
{
|
||||
GstPad *pad;
|
||||
/* Set default encoding as RAW as ASCII takes up 4 time more bytes */
|
||||
s->info.encoding = GST_PNM_ENCODING_RAW;
|
||||
}
|
||||
|
||||
pad = gst_pad_new_from_static_template (&sink_pad_template, "sink");
|
||||
gst_pad_set_chain_function (pad, gst_pnmenc_chain);
|
||||
gst_pad_set_event_function (pad, gst_pnmenc_sink_event);
|
||||
gst_pad_use_fixed_caps (pad);
|
||||
gst_element_add_pad (GST_ELEMENT (s), pad);
|
||||
static void
|
||||
gst_pnmenc_finalize (GObject * object)
|
||||
{
|
||||
GstPnmenc *pnmenc = GST_PNMENC (object);
|
||||
if (pnmenc->input_state)
|
||||
gst_video_codec_state_unref (pnmenc->input_state);
|
||||
|
||||
s->src = gst_pad_new_from_static_template (&src_pad_template, "src");
|
||||
gst_element_add_pad (GST_ELEMENT (s), s->src);
|
||||
G_OBJECT_CLASS (parent_class)->finalize (object);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_pnmenc_set_format (GstVideoEncoder * encoder, GstVideoCodecState * state)
|
||||
{
|
||||
GstPnmenc *pnmenc;
|
||||
gboolean ret = TRUE;
|
||||
GstVideoInfo *info;
|
||||
GstVideoCodecState *output_state;
|
||||
|
||||
pnmenc = GST_PNMENC (encoder);
|
||||
info = &state->info;
|
||||
|
||||
switch (GST_VIDEO_INFO_FORMAT (info)) {
|
||||
case GST_VIDEO_FORMAT_RGB:
|
||||
pnmenc->info.type = GST_PNM_TYPE_PIXMAP;
|
||||
break;
|
||||
case GST_VIDEO_FORMAT_GRAY8:
|
||||
pnmenc->info.type = GST_PNM_TYPE_GRAYMAP;
|
||||
break;
|
||||
default:
|
||||
ret = FALSE;
|
||||
goto done;
|
||||
}
|
||||
|
||||
pnmenc->info.width = GST_VIDEO_INFO_WIDTH (info);
|
||||
pnmenc->info.height = GST_VIDEO_INFO_HEIGHT (info);
|
||||
/* Supported max value is only one, that is 255 */
|
||||
pnmenc->info.max = 255;
|
||||
|
||||
if (pnmenc->input_state)
|
||||
gst_video_codec_state_unref (pnmenc->input_state);
|
||||
pnmenc->input_state = gst_video_codec_state_ref (state);
|
||||
|
||||
output_state =
|
||||
gst_video_encoder_set_output_state (encoder,
|
||||
gst_caps_new_empty_simple ("image/pnm"), state);
|
||||
gst_video_codec_state_unref (output_state);
|
||||
|
||||
done:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_pnmenc_handle_frame (GstVideoEncoder * encoder, GstVideoCodecFrame * frame)
|
||||
{
|
||||
GstPnmenc *pnmenc;
|
||||
guint size, pixels;
|
||||
GstMapInfo omap, imap;
|
||||
gchar *header;
|
||||
GstVideoInfo *info;
|
||||
GstFlowReturn ret = GST_FLOW_OK;
|
||||
guint i_rowstride, o_rowstride;
|
||||
guint bytes = 0, index, head_size;
|
||||
guint i, j;
|
||||
|
||||
pnmenc = GST_PNMENC (encoder);
|
||||
info = &pnmenc->input_state->info;
|
||||
|
||||
switch (GST_VIDEO_INFO_FORMAT (info)) {
|
||||
case GST_VIDEO_FORMAT_RGB:
|
||||
pixels = size = pnmenc->info.width * pnmenc->info.height * 3;
|
||||
break;
|
||||
case GST_VIDEO_FORMAT_GRAY8:
|
||||
pixels = size = pnmenc->info.width * pnmenc->info.height * 1;
|
||||
break;
|
||||
default:
|
||||
ret = FALSE;
|
||||
goto done;
|
||||
}
|
||||
|
||||
header = g_strdup_printf ("P%i\n%i %i\n%i\n",
|
||||
pnmenc->info.type + 3 * (1 - pnmenc->info.encoding), pnmenc->info.width,
|
||||
pnmenc->info.height, pnmenc->info.max);
|
||||
|
||||
if (pnmenc->info.encoding == GST_PNM_ENCODING_ASCII) {
|
||||
/* Per component 4 bytes are used in case of ASCII encoding */
|
||||
size = size * 4;
|
||||
size += strlen (header);
|
||||
frame->output_buffer =
|
||||
gst_video_encoder_allocate_output_buffer (encoder, (size + size / 20));
|
||||
} else {
|
||||
size += strlen (header);
|
||||
frame->output_buffer =
|
||||
gst_video_encoder_allocate_output_buffer (encoder, size);
|
||||
}
|
||||
|
||||
if (gst_buffer_map (frame->output_buffer, &omap, GST_MAP_WRITE) == FALSE) {
|
||||
ret = GST_FLOW_ERROR;
|
||||
goto done;
|
||||
}
|
||||
if (gst_buffer_map (frame->input_buffer, &imap, GST_MAP_READ) == FALSE) {
|
||||
/* Unmap already mapped buffer */
|
||||
gst_buffer_unmap (frame->output_buffer, &omap);
|
||||
ret = GST_FLOW_ERROR;
|
||||
goto done;
|
||||
}
|
||||
memcpy (omap.data, header, strlen (header));
|
||||
|
||||
head_size = strlen (header);
|
||||
if (pnmenc->info.encoding == GST_PNM_ENCODING_ASCII) {
|
||||
/* We need to convert to ASCII */
|
||||
if (pnmenc->info.width % 4 != 0) {
|
||||
/* Convert from gstreamer rowstride to PNM rowstride */
|
||||
if (pnmenc->info.type == GST_PNM_TYPE_PIXMAP) {
|
||||
o_rowstride = 3 * pnmenc->info.width;
|
||||
} else {
|
||||
o_rowstride = pnmenc->info.width;
|
||||
}
|
||||
i_rowstride = GST_VIDEO_FRAME_COMP_STRIDE (pnmenc->input_state, 0);
|
||||
|
||||
for (i = 0; i < pnmenc->info.height; i++) {
|
||||
index = i * i_rowstride;
|
||||
for (j = 0; j < o_rowstride; j++, bytes++, index++) {
|
||||
g_snprintf ((char *) omap.data + head_size, 4, "%3i",
|
||||
imap.data[index]);
|
||||
head_size += 3;
|
||||
omap.data[head_size++] = ' ';
|
||||
/* Add new line so that file will not end up with sinle big line */
|
||||
if (!((bytes + 1) % 20))
|
||||
omap.data[head_size++] = '\n';
|
||||
}
|
||||
}
|
||||
} else {
|
||||
for (i = 0; i < pixels; i++) {
|
||||
g_snprintf ((char *) omap.data + head_size, 4, "%3i", imap.data[i]);
|
||||
head_size += 3;
|
||||
omap.data[head_size++] = ' ';
|
||||
if (!((i + 1) % 20))
|
||||
omap.data[head_size++] = '\n';
|
||||
}
|
||||
}
|
||||
} else {
|
||||
/* Need to convert from GStreamer rowstride to PNM rowstride */
|
||||
if (pnmenc->info.width % 4 != 0) {
|
||||
if (pnmenc->info.type == GST_PNM_TYPE_PIXMAP) {
|
||||
o_rowstride = 3 * pnmenc->info.width;
|
||||
} else {
|
||||
o_rowstride = pnmenc->info.width;
|
||||
}
|
||||
i_rowstride = GST_VIDEO_FRAME_COMP_STRIDE (pnmenc->input_state, 0);
|
||||
|
||||
for (i = 0; i < pnmenc->info.height; i++)
|
||||
memcpy (omap.data + head_size + o_rowstride * i,
|
||||
imap.data + i_rowstride * i, o_rowstride);
|
||||
} else {
|
||||
/* size contains complete image size inlcuding header size,
|
||||
Exclude header size while copying data */
|
||||
memcpy (omap.data + strlen (header), imap.data, (size - head_size));
|
||||
}
|
||||
}
|
||||
|
||||
gst_buffer_unmap (frame->output_buffer, &omap);
|
||||
gst_buffer_unmap (frame->input_buffer, &imap);
|
||||
|
||||
if ((ret = gst_video_encoder_finish_frame (encoder, frame)) != GST_FLOW_OK)
|
||||
goto done;
|
||||
|
||||
done:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
@ -265,20 +290,28 @@ gst_pnmenc_class_init (GstPnmencClass * klass)
|
|||
{
|
||||
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
||||
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
|
||||
GstVideoEncoderClass *venc_class = (GstVideoEncoderClass *) klass;
|
||||
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
gst_static_pad_template_get (&sink_pad_template));
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
gst_static_pad_template_get (&src_pad_template));
|
||||
gst_element_class_set_static_metadata (element_class, "PNM image encoder",
|
||||
"Codec/Encoder/Image",
|
||||
"Encodes images into portable pixmap or graymap (PNM) format",
|
||||
"Lutz Mueller <lutz@users.sourceforge.net>");
|
||||
|
||||
parent_class = g_type_class_peek_parent (klass);
|
||||
gobject_class->set_property = gst_pnmenc_set_property;
|
||||
gobject_class->get_property = gst_pnmenc_get_property;
|
||||
|
||||
g_object_class_install_property (gobject_class, GST_PNMENC_PROP_ASCII,
|
||||
g_param_spec_boolean ("ascii", "ASCII Encoding", "The output will be "
|
||||
"ASCII encoded", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
||||
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
gst_static_pad_template_get (&sink_pad_template));
|
||||
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
gst_static_pad_template_get (&src_pad_template));
|
||||
|
||||
gst_element_class_set_static_metadata (element_class, "PNM image encoder",
|
||||
"Codec/Encoder/Image",
|
||||
"Encodes images into portable pixmap or graymap (PNM) format",
|
||||
"Lutz Mueller <lutz@users.sourceforge.net>");
|
||||
|
||||
venc_class->set_format = gst_pnmenc_set_format;
|
||||
venc_class->handle_frame = gst_pnmenc_handle_frame;
|
||||
gobject_class->finalize = gst_pnmenc_finalize;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -38,9 +38,8 @@ typedef struct _GstPnmencClass GstPnmencClass;
|
|||
|
||||
struct _GstPnmenc
|
||||
{
|
||||
GstElement element;
|
||||
|
||||
GstVideoInfo vinfo;
|
||||
GstVideoEncoder parent;
|
||||
GstVideoCodecState *input_state;
|
||||
GstPnmInfo info;
|
||||
|
||||
GstPad *src;
|
||||
|
|
@ -48,7 +47,7 @@ struct _GstPnmenc
|
|||
|
||||
struct _GstPnmencClass
|
||||
{
|
||||
GstElementClass parent_class;
|
||||
GstVideoEncoderClass parent;
|
||||
};
|
||||
|
||||
GType gst_pnmenc_get_type (void) G_GNUC_CONST;
|
||||
|
|
|
|||
Loading…
Reference in a new issue