static gboolean
gst_ffmpegscale_set_caps(GstBaseTransform* trans, GstCaps* incaps,
GstCaps* outcaps) {
GstFFMpegScale* scale = GST_FFMPEGSCALE(trans);
guint mmx_flags, altivec_flags, sse_flags;
gint swsflags;
gboolean ok;
g_return_val_if_fail(scale->method <
G_N_ELEMENTS(gst_ffmpegscale_method_flags), FALSE);
if (scale->ctx) {
sws_freeContext(scale->ctx);
scale->ctx = NULL;
}
scale->borders_h = 0;
scale->borders_w = 0;
ok = gst_video_format_parse_caps(incaps, &scale->in_format, &scale->in_width,
&scale->in_height);
ok &= gst_video_format_parse_caps(outcaps, &scale->out_format, &scale->out_width,
&scale->out_height);
scale->in_pixfmt = gst_ffmpeg_caps_to_pixfmt(incaps);
scale->out_pixfmt = gst_ffmpeg_caps_to_pixfmt(outcaps);
if (!ok || scale->in_pixfmt == PIX_FMT_NONE ||
scale->out_pixfmt == PIX_FMT_NONE ||
scale->in_format == GST_VIDEO_FORMAT_UNKNOWN ||
scale->out_format == GST_VIDEO_FORMAT_UNKNOWN) {
goto refuse_caps;
}
GST_DEBUG_OBJECT(scale, "format %d => %d, from=%dx%d -> to=%dx%d", scale->in_format,
scale->out_format, scale->in_width, scale->in_height, scale->out_width,
scale->out_height);
gst_ffmpegscale_fill_info(scale, scale->in_format, scale->in_width,
scale->in_height, scale->in_stride, scale->in_offset);
gst_ffmpegscale_fill_info(scale, scale->out_format, scale->out_width,
scale->out_height, scale->out_stride, scale->out_offset);
#ifdef HAVE_ORC
mmx_flags = orc_target_get_default_flags(orc_target_get_by_name("mmx"));
altivec_flags =
orc_target_get_default_flags(orc_target_get_by_name("altivec"));
sse_flags = orc_target_get_default_flags(orc_target_get_by_name("sse"));
swsflags = (mmx_flags & ORC_TARGET_MMX_MMX ? SWS_CPU_CAPS_MMX : 0)
| (mmx_flags & ORC_TARGET_MMX_MMXEXT ? SWS_CPU_CAPS_MMX2 : 0)
| (mmx_flags & ORC_TARGET_MMX_3DNOW ? SWS_CPU_CAPS_3DNOW : 0)
| (altivec_flags & ORC_TARGET_ALTIVEC_ALTIVEC ? SWS_CPU_CAPS_ALTIVEC : 0)
| (sse_flags & ORC_TARGET_SSE_SSE2 ? SWS_CPU_CAPS_SSE2 : 0);
#else
mmx_flags = 0;
altivec_flags = 0;
swsflags = 0;
#endif
if (scale->add_borders && scale->in_width > 0 && scale->in_height > 0 && scale->out_height > 0
&& scale->out_width > 0) {
gfloat ratio = scale->in_width * 1.0f / scale->in_height;
gint ratio_width = (gint)(scale->out_height * ratio);
if (ratio_width > scale->out_width) {
gint ratio_height = (gint)(scale->out_width / ratio);
scale->ctx = sws_getContext(scale->in_width, scale->in_height,
scale->in_pixfmt, scale->out_width, ratio_height, scale->out_pixfmt,
swsflags | gst_ffmpegscale_method_flags[scale->method], NULL, NULL, NULL);
if (ratio_height != scale->out_height) {
gint rows = 0;
scale->borders_h = scale->out_height - ratio_height;
rows = scale->borders_h / 2;
if (rows > 0) {
gst_video_format_add_top_border(scale->out_format, rows, scale->out_offset, scale->out_stride);
}
}
} else {
if (ratio_width != scale->out_width) {
gint cols = 0;
scale->borders_w = scale->out_width - ratio_width;
cols = scale->borders_w / 2;
if (cols > 0) {
int i = 0;
for (i = 0; i < 3; i ++) {
scale->out_offset[i] += cols * scale->out_stride[i] / scale->out_width;
}
}
}
scale->ctx = sws_getContext(scale->in_width, scale->in_height,
scale->in_pixfmt, ratio_width, scale->out_height, scale->out_pixfmt,
swsflags | gst_ffmpegscale_method_flags[scale->method], NULL, NULL, NULL);
}
} else {
scale->ctx = sws_getContext(scale->in_width, scale->in_height,
scale->in_pixfmt, scale->out_width, scale->out_height, scale->out_pixfmt,
swsflags | gst_ffmpegscale_method_flags[scale->method], NULL, NULL, NULL);
}
if (!scale->ctx) {
goto setup_failed;
}
return TRUE;
/* ERRORS */
setup_failed: {
GST_ELEMENT_ERROR(trans, LIBRARY, INIT, (NULL), (NULL));
return FALSE;
}
refuse_caps: {
GST_DEBUG_OBJECT(trans, "refused caps %" GST_PTR_FORMAT, incaps);
return FALSE;
}
}
static gboolean
gst_ffmpegscale_set_caps (GstBaseTransform * trans, GstCaps * incaps,
GstCaps * outcaps)
{
GstFFMpegScale *scale = GST_FFMPEGSCALE (trans);
#ifdef HAVE_ORC
guint mmx_flags, altivec_flags;
#endif
gint swsflags;
gboolean ok;
g_return_val_if_fail (scale->method <
G_N_ELEMENTS (gst_ffmpegscale_method_flags), FALSE);
if (scale->ctx) {
sws_freeContext (scale->ctx);
scale->ctx = NULL;
}
ok = gst_video_info_from_caps (&scale->in_info, incaps);
ok &= gst_video_info_from_caps (&scale->out_info, outcaps);
scale->in_pixfmt = gst_ffmpeg_caps_to_pixfmt (incaps);
scale->out_pixfmt = gst_ffmpeg_caps_to_pixfmt (outcaps);
if (!ok || scale->in_pixfmt == AV_PIX_FMT_NONE ||
scale->out_pixfmt == AV_PIX_FMT_NONE ||
GST_VIDEO_INFO_FORMAT (&scale->in_info) == GST_VIDEO_FORMAT_UNKNOWN ||
GST_VIDEO_INFO_FORMAT (&scale->out_info) == GST_VIDEO_FORMAT_UNKNOWN)
goto refuse_caps;
GST_DEBUG_OBJECT (scale, "format %d => %d, from=%dx%d -> to=%dx%d",
GST_VIDEO_INFO_FORMAT (&scale->in_info),
GST_VIDEO_INFO_FORMAT (&scale->out_info),
GST_VIDEO_INFO_WIDTH (&scale->in_info),
GST_VIDEO_INFO_HEIGHT (&scale->in_info),
GST_VIDEO_INFO_WIDTH (&scale->out_info),
GST_VIDEO_INFO_HEIGHT (&scale->out_info));
#ifdef HAVE_ORC
mmx_flags = orc_target_get_default_flags (orc_target_get_by_name ("mmx"));
altivec_flags =
orc_target_get_default_flags (orc_target_get_by_name ("altivec"));
swsflags = (mmx_flags & ORC_TARGET_MMX_MMX ? SWS_CPU_CAPS_MMX : 0)
| (mmx_flags & ORC_TARGET_MMX_MMXEXT ? SWS_CPU_CAPS_MMX2 : 0)
| (mmx_flags & ORC_TARGET_MMX_3DNOW ? SWS_CPU_CAPS_3DNOW : 0)
| (altivec_flags & ORC_TARGET_ALTIVEC_ALTIVEC ? SWS_CPU_CAPS_ALTIVEC : 0);
#else
swsflags = 0;
#endif
scale->ctx = sws_getContext (scale->in_info.width, scale->in_info.height,
scale->in_pixfmt, scale->out_info.width, scale->out_info.height,
scale->out_pixfmt, swsflags | gst_ffmpegscale_method_flags[scale->method],
NULL, NULL, NULL);
if (!scale->ctx)
goto setup_failed;
return TRUE;
/* ERRORS */
setup_failed:
{
GST_ELEMENT_ERROR (trans, LIBRARY, INIT, (NULL), (NULL));
return FALSE;
}
refuse_caps:
{
GST_DEBUG_OBJECT (trans, "refused caps %" GST_PTR_FORMAT, incaps);
return FALSE;
}
}
