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mxf: Implement stride transformations for raw video content for muxing and demuxing

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Sebastian Dröge 2009-03-16 17:18:17 +01:00
parent b6bac882f9
commit a31498d8d4
1 changed files with 100 additions and 20 deletions
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120
gst/mxf/mxfup.c
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@ -24,7 +24,6 @@
/* TODO:
* - Handle CDCI essence
* - Handle more formats with RGBA descriptor (4:4:4 / 4:4:4:4 YUV, RGB656, ...)
* - Correctly transform for the GStreamer strides
* - Handle all the dimensions and other properties in the picture
* essence descriptors correctly according to S377M Annex E
* - Handle interlaced correctly, i.e. weave until we support one-field-per-buffer
@ -50,36 +49,40 @@ static const struct
const gchar *caps;
guint32 n_pixel_layout;
guint8 pixel_layout[10];
guint32 fourcc;
} _rgba_mapping_table[] = {
{
GST_VIDEO_CAPS_RGB, 3, {
'R', 8, 'G', 8, 'B', 8}}, {
'R', 8, 'G', 8, 'B', 8}, GST_MAKE_FOURCC ('R', 'G', 'B', ' ')}, {
GST_VIDEO_CAPS_BGR, 3, {
'B', 8, 'G', 8, 'R', 8}}, {
'B', 8, 'G', 8, 'R', 8}, GST_MAKE_FOURCC ('B', 'G', 'R', ' ')}, {
GST_VIDEO_CAPS_YUV ("v308"), 3, {
'Y', 8, 'U', 8, 'V', 8}}, {
'Y', 8, 'U', 8, 'V', 8}, GST_MAKE_FOURCC ('v', '3', '0', '8')}, {
GST_VIDEO_CAPS_xRGB, 4, {
'F', 8, 'R', 8, 'G', 8, 'B', 8}}, {
'F', 8, 'R', 8, 'G', 8, 'B', 8}, GST_MAKE_FOURCC ('x', 'R', 'G', 'B')}, {
GST_VIDEO_CAPS_RGBx, 4, {
'R', 8, 'G', 8, 'B', 8, 'F', 8}}, {
'R', 8, 'G', 8, 'B', 8, 'F', 8}, GST_MAKE_FOURCC ('R', 'G', 'B', 'x')}, {
GST_VIDEO_CAPS_xBGR, 4, {
'F', 8, 'B', 8, 'G', 8, 'R', 8}}, {
'F', 8, 'B', 8, 'G', 8, 'R', 8}, GST_MAKE_FOURCC ('x', 'B', 'G', 'R')}, {
GST_VIDEO_CAPS_BGRx, 4, {
'B', 8, 'G', 8, 'R', 8, 'F', 8}}, {
'B', 8, 'G', 8, 'R', 8, 'F', 8}, GST_MAKE_FOURCC ('B', 'G', 'R', 'x')}, {
GST_VIDEO_CAPS_RGBA, 4, {
'R', 8, 'G', 8, 'B', 8, 'A', 8}}, {
'R', 8, 'G', 8, 'B', 8, 'A', 8}, GST_MAKE_FOURCC ('R', 'G', 'B', 'A')}, {
GST_VIDEO_CAPS_ARGB, 4, {
'A', 8, 'R', 8, 'G', 8, 'B', 8}}, {
'A', 8, 'R', 8, 'G', 8, 'B', 8}, GST_MAKE_FOURCC ('A', 'R', 'G', 'B')}, {
GST_VIDEO_CAPS_BGRA, 4, {
'B', 8, 'G', 8, 'R', 8, 'A', 8}}, {
'B', 8, 'G', 8, 'R', 8, 'A', 8}, GST_MAKE_FOURCC ('B', 'G', 'R', 'A')}, {
GST_VIDEO_CAPS_ABGR, 4, {
'A', 8, 'B', 8, 'G', 8, 'R', 8}}, {
'A', 8, 'B', 8, 'G', 8, 'R', 8}, GST_MAKE_FOURCC ('A', 'B', 'G', 'R')}, {
GST_VIDEO_CAPS_YUV ("AYUV"), 4, {
'A', 8, 'Y', 8, 'U', 8, 'V', 8}}
'A', 8, 'Y', 8, 'U', 8, 'V', 8}, GST_MAKE_FOURCC ('A', 'Y', 'U', 'V')}
};
typedef struct
{
guint32 fourcc; /* fourcc or RGB format specifier */
gint width, height;
guint bpp;
guint32 image_start_offset;
guint32 image_end_offset;
} MXFUPMappingData;
@ -127,7 +130,6 @@ mxf_up_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
}
if (!data || (data->image_start_offset == 0 && data->image_end_offset == 0)) {
*outbuf = buffer;
} else {
if (data->image_start_offset + data->image_end_offset
> GST_BUFFER_SIZE (buffer)) {
@ -138,10 +140,38 @@ mxf_up_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
GST_BUFFER_DATA (buffer) += data->image_start_offset;
GST_BUFFER_SIZE (buffer) -= data->image_start_offset;
GST_BUFFER_SIZE (buffer) -= data->image_end_offset;
*outbuf = buffer;
}
}
if (GST_BUFFER_SIZE (buffer) != data->bpp * data->width * data->height) {
GST_ERROR ("Invalid buffer size");
return GST_FLOW_ERROR;
}
if (data->bpp != 4
|| GST_ROUND_UP_4 (data->width * data->bpp) != data->width * data->bpp) {
guint y;
GstBuffer *ret;
guint8 *indata, *outdata;
ret =
gst_buffer_new_and_alloc (GST_ROUND_UP_4 (data->width * data->bpp) *
data->height);
indata = GST_BUFFER_DATA (buffer);
outdata = GST_BUFFER_DATA (ret);
for (y = 0; y < data->height; y++) {
memcpy (outdata, indata, data->width * data->bpp);
outdata += GST_ROUND_UP_4 (data->width * data->bpp);
indata += data->width * data->bpp;
}
gst_buffer_unref (buffer);
*outbuf = ret;
} else {
*outbuf = buffer;
}
return GST_FLOW_OK;
}
@ -152,6 +182,8 @@ mxf_up_rgba_create_caps (MXFMetadataTimelineTrack * track,
{
GstCaps *caps = NULL;
guint i;
guint32 fourcc;
guint bpp;
if (!d->pixel_layout) {
GST_ERROR ("No pixel layout");
@ -165,13 +197,24 @@ mxf_up_rgba_create_caps (MXFMetadataTimelineTrack * track,
if (memcmp (d->pixel_layout, &_rgba_mapping_table[i].pixel_layout,
_rgba_mapping_table[i].n_pixel_layout * 2) == 0) {
caps = gst_caps_from_string (_rgba_mapping_table[i].caps);
fourcc = _rgba_mapping_table[i].fourcc;
bpp = _rgba_mapping_table[i].n_pixel_layout;
break;
}
}
if (caps) {
MXFUPMappingData *data = g_new0 (MXFUPMappingData, 1);
GstStructure *s;
mxf_metadata_generic_picture_essence_descriptor_set_caps (&d->parent, caps);
s = gst_caps_get_structure (caps, 0);
gst_structure_get_int (s, "width", &data->width);
gst_structure_get_int (s, "height", &data->height);
data->fourcc = fourcc;
data->bpp = bpp;
data->image_start_offset =
((MXFMetadataGenericPictureEssenceDescriptor *) d)->image_start_offset;
data->image_end_offset =
@ -236,10 +279,6 @@ mxf_up_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
return NULL;
}
if (caps) {
mxf_metadata_generic_picture_essence_descriptor_set_caps (p, caps);
}
return caps;
}
@ -252,7 +291,40 @@ static GstFlowReturn
mxf_up_write_func (GstBuffer * buffer, GstCaps * caps, gpointer mapping_data,
GstAdapter * adapter, GstBuffer ** outbuf, gboolean flush)
{
*outbuf = buffer;
MXFUPMappingData *data = mapping_data;
if (!buffer)
return GST_FLOW_OK;
if (GST_BUFFER_SIZE (buffer) !=
GST_ROUND_UP_4 (data->bpp * data->width) * data->height) {
GST_ERROR ("Invalid buffer size");
return GST_FLOW_ERROR;
}
if (data->bpp != 4
|| GST_ROUND_UP_4 (data->width * data->bpp) != data->width * data->bpp) {
guint y;
GstBuffer *ret;
guint8 *indata, *outdata;
ret = gst_buffer_new_and_alloc (data->width * data->bpp * data->height);
indata = GST_BUFFER_DATA (buffer);
outdata = GST_BUFFER_DATA (ret);
for (y = 0; y < data->height; y++) {
memcpy (outdata, indata, data->width * data->bpp);
indata += GST_ROUND_UP_4 (data->width * data->bpp);
outdata += data->width * data->bpp;
}
gst_buffer_unref (buffer);
*outbuf = ret;
} else {
*outbuf = buffer;
}
return GST_FLOW_OK;
}
@ -268,6 +340,9 @@ mxf_up_get_rgba_descriptor (GstPadTemplate * tmpl, GstCaps * caps,
MXFMetadataRGBAPictureEssenceDescriptor *ret;
guint i;
GstCaps *tmp, *intersection;
MXFUPMappingData *md = g_new0 (MXFUPMappingData, 1);
*mapping_data = md;
ret = (MXFMetadataRGBAPictureEssenceDescriptor *)
gst_mini_object_new (MXF_TYPE_METADATA_RGBA_PICTURE_ESSENCE_DESCRIPTOR);
@ -281,6 +356,8 @@ mxf_up_get_rgba_descriptor (GstPadTemplate * tmpl, GstCaps * caps,
gst_caps_unref (intersection);
ret->n_pixel_layout = _rgba_mapping_table[i].n_pixel_layout;
ret->pixel_layout = g_new0 (guint8, ret->n_pixel_layout * 2);
md->fourcc = _rgba_mapping_table[i].fourcc;
md->bpp = _rgba_mapping_table[i].n_pixel_layout;
memcpy (ret->pixel_layout, _rgba_mapping_table[i].pixel_layout,
ret->n_pixel_layout * 2);
break;
@ -293,6 +370,9 @@ mxf_up_get_rgba_descriptor (GstPadTemplate * tmpl, GstCaps * caps,
mxf_metadata_generic_picture_essence_descriptor_from_caps (&ret->parent,
caps);
md->width = ret->parent.stored_width;
md->height = ret->parent.stored_height;
*handler = mxf_up_write_func;
return (MXFMetadataFileDescriptor *) ret;