diff options
Diffstat (limited to 'gst/audiovisualizers/gstspacescope.c')
| -rw-r--r-- | gst/audiovisualizers/gstspacescope.c | 153 |
1 files changed, 141 insertions, 12 deletions
diff --git a/gst/audiovisualizers/gstspacescope.c b/gst/audiovisualizers/gstspacescope.c index 85621f619..973dd74be 100644 --- a/gst/audiovisualizers/gstspacescope.c +++ b/gst/audiovisualizers/gstspacescope.c @@ -35,6 +35,7 @@ #include "config.h" #endif +#include <stdlib.h> #include "gstspacescope.h" static GstStaticPadTemplate gst_space_scope_src_template = @@ -61,6 +62,47 @@ GST_STATIC_PAD_TEMPLATE ("sink", GST_DEBUG_CATEGORY_STATIC (space_scope_debug); #define GST_CAT_DEFAULT space_scope_debug +enum +{ + PROP_0, + PROP_STYLE +}; + +enum +{ + STYLE_DOTS = 0, + STYLE_LINES, + NUM_STYLES +}; + +#define GST_TYPE_SPACE_SCOPE_STYLE (gst_space_scope_style_get_type ()) +static GType +gst_space_scope_style_get_type (void) +{ + static GType gtype = 0; + + if (gtype == 0) { + static const GEnumValue values[] = { + {STYLE_DOTS, "draw dots (default)", "dots"}, + {STYLE_LINES, "draw lines", "lines"}, + {0, NULL, NULL} + }; + + gtype = g_enum_register_static ("GstSpaceScopeStyle", values); + } + return gtype; +} + +static void gst_space_scope_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec); +static void gst_space_scope_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec); + +static void render_dots (GstBaseAudioVisualizer * scope, guint32 * vdata, + gint16 * adata, guint num_samples); +static void render_lines (GstBaseAudioVisualizer * scope, guint32 * vdata, + gint16 * adata, guint num_samples); + static gboolean gst_space_scope_render (GstBaseAudioVisualizer * scope, GstBuffer * audio, GstBuffer * video); @@ -70,6 +112,7 @@ G_DEFINE_TYPE (GstSpaceScope, gst_space_scope, GST_TYPE_BASE_AUDIO_VISUALIZER); static void gst_space_scope_class_init (GstSpaceScopeClass * g_class) { + GObjectClass *gobject_class = (GObjectClass *) g_class; GstElementClass *element_class = (GstElementClass *) g_class; GstBaseAudioVisualizerClass *scope_class = (GstBaseAudioVisualizerClass *) g_class; @@ -83,7 +126,16 @@ gst_space_scope_class_init (GstSpaceScopeClass * g_class) gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_space_scope_sink_template)); + gobject_class->set_property = gst_space_scope_set_property; + gobject_class->get_property = gst_space_scope_get_property; + scope_class->render = GST_DEBUG_FUNCPTR (gst_space_scope_render); + + g_object_class_install_property (gobject_class, PROP_STYLE, + g_param_spec_enum ("style", "drawing style", + "Drawing styles for the space scope display.", + GST_TYPE_SPACE_SCOPE_STYLE, STYLE_DOTS, + G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); } static void @@ -92,21 +144,57 @@ gst_space_scope_init (GstSpaceScope * scope) /* do nothing */ } -static gboolean -gst_space_scope_render (GstBaseAudioVisualizer * scope, GstBuffer * audio, - GstBuffer * video) +static void +gst_space_scope_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) { - gsize asize; - guint32 *vdata = - (guint32 *) gst_buffer_map (video, NULL, NULL, GST_MAP_WRITE); - gint16 *adata = (gint16 *) gst_buffer_map (audio, &asize, NULL, GST_MAP_READ); - guint i, s, x, y, off, ox, oy; - guint num_samples; + GstSpaceScope *scope = GST_SPACE_SCOPE (object); + + switch (prop_id) { + case PROP_STYLE: + scope->style = g_value_get_enum (value); + switch (scope->style) { + case STYLE_DOTS: + scope->process = render_dots; + break; + case STYLE_LINES: + scope->process = render_lines; + break; + } + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_space_scope_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec) +{ + GstSpaceScope *scope = GST_SPACE_SCOPE (object); + + switch (prop_id) { + case PROP_STYLE: + g_value_set_enum (value, scope->style); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +#include "gstdrawhelpers.h" + +static void +render_dots (GstBaseAudioVisualizer * scope, guint32 * vdata, gint16 * adata, + guint num_samples) +{ + guint i, s, x, y, ox, oy; gfloat dx, dy; guint w = scope->width; /* draw dots 1st channel x, 2nd channel y */ - num_samples = asize / (scope->channels * sizeof (gint16)); dx = scope->width / 65536.0; ox = scope->width / 2; dy = scope->height / 65536.0; @@ -115,9 +203,50 @@ gst_space_scope_render (GstBaseAudioVisualizer * scope, GstBuffer * audio, for (i = 0; i < num_samples; i++) { x = (guint) (ox + (gfloat) adata[s++] * dx); y = (guint) (oy + (gfloat) adata[s++] * dy); - off = (y * w) + x; - vdata[off] = 0x00FFFFFF; + draw_dot (vdata, x, y, w, 0x00FFFFFF); + } +} + +static void +render_lines (GstBaseAudioVisualizer * scope, guint32 * vdata, gint16 * adata, + guint num_samples) +{ + guint i, s, x, y, ox, oy; + gfloat dx, dy; + guint w = scope->width; + guint h = scope->height; + gint x2, y2; + + /* draw lines 1st channel x, 2nd channel y */ + dx = (w - 1) / 65536.0; + ox = (w - 1) / 2; + dy = (h - 1) / 65536.0; + oy = (h - 1) / 2; + s = 0; + x2 = (guint) (ox + (gfloat) adata[s++] * dx); + y2 = (guint) (oy + (gfloat) adata[s++] * dy); + for (i = 1; i < num_samples; i++) { + x = (guint) (ox + (gfloat) adata[s++] * dx); + y = (guint) (oy + (gfloat) adata[s++] * dy); + draw_line_aa (vdata, x2, x, y2, y, w, 0x00FFFFFF); + x2 = x; + y2 = y; } +} + +static gboolean +gst_space_scope_render (GstBaseAudioVisualizer * base, GstBuffer * audio, + GstBuffer * video) +{ + GstSpaceScope *scope = GST_SPACE_SCOPE (base); + gsize asize; + guint32 *vdata = + (guint32 *) gst_buffer_map (video, NULL, NULL, GST_MAP_WRITE); + gint16 *adata = (gint16 *) gst_buffer_map (audio, &asize, NULL, GST_MAP_READ); + guint num_samples; + + num_samples = asize / (base->channels * sizeof (gint16)); + scope->process (base, vdata, adata, num_samples); gst_buffer_unmap (video, vdata, -1); gst_buffer_unmap (audio, adata, -1); return TRUE; |