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libvisual: add some defines

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Add some defines for width/height/fps and a define for the minimum amount of
samples we need to buffer.
This commit is contained in:
Wim Taymans 2010-10-05 12:00:28 +02:00
parent f55529e8d0
commit 0e395146c3
1 changed files with 25 additions and 15 deletions
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40
ext/libvisual/visual.c
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@ -40,6 +40,14 @@ typedef struct _GstVisualClass GstVisualClass;
GST_DEBUG_CATEGORY_STATIC (libvisual_debug); GST_DEBUG_CATEGORY_STATIC (libvisual_debug);
#define GST_CAT_DEFAULT (libvisual_debug) #define GST_CAT_DEFAULT (libvisual_debug)
/* amounf of samples before we can feed libvisual */
#define VISUAL_SAMPLES 512
#define DEFAULT_WIDTH 320
#define DEFAULT_HEIGHT 240
#define DEFAULT_FPS_N 25
#define DEFAULT_FPS_D 1
struct _GstVisual struct _GstVisual
{ {
GstElement element; GstElement element;
@ -404,11 +412,12 @@ gst_vis_src_negotiate (GstVisual * visual)
/* fixate in case something is not fixed. This does nothing if the value is /* fixate in case something is not fixed. This does nothing if the value is
* already fixed. For video we always try to fixate to something like * already fixed. For video we always try to fixate to something like
* 320x240x30 by convention. */ * 320x240x25 by convention. */
structure = gst_caps_get_structure (target, 0); structure = gst_caps_get_structure (target, 0);
gst_structure_fixate_field_nearest_int (structure, "width", 320); gst_structure_fixate_field_nearest_int (structure, "width", DEFAULT_WIDTH);
gst_structure_fixate_field_nearest_int (structure, "height", 240); gst_structure_fixate_field_nearest_int (structure, "height", DEFAULT_HEIGHT);
gst_structure_fixate_field_nearest_fraction (structure, "framerate", 30, 1); gst_structure_fixate_field_nearest_fraction (structure, "framerate",
DEFAULT_FPS_N, DEFAULT_FPS_D);
gst_pad_set_caps (visual->srcpad, target); gst_pad_set_caps (visual->srcpad, target);
gst_caps_unref (target); gst_caps_unref (target);
@ -587,8 +596,8 @@ gst_visual_chain (GstPad * pad, GstBuffer * buffer)
avail = gst_adapter_available (visual->adapter); avail = gst_adapter_available (visual->adapter);
GST_DEBUG_OBJECT (visual, "avail now %u", avail); GST_DEBUG_OBJECT (visual, "avail now %u", avail);
/* we need at least 512 samples */ /* we need at least VISUAL_SAMPLES samples */
if (avail < 512 * visual->bps) if (avail < VISUAL_SAMPLES * visual->bps)
break; break;
/* we need at least enough samples to make one frame */ /* we need at least enough samples to make one frame */
@ -624,26 +633,27 @@ gst_visual_chain (GstPad * pad, GstBuffer * buffer)
} }
} }
/* Read 512 samples per channel */ /* Read VISUAL_SAMPLES samples per channel */
data = data =
(const guint16 *) gst_adapter_peek (visual->adapter, 512 * visual->bps); (const guint16 *) gst_adapter_peek (visual->adapter,
VISUAL_SAMPLES * visual->bps);
#if defined(VISUAL_API_VERSION) && VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000 #if defined(VISUAL_API_VERSION) && VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
{ {
VisBuffer *lbuf, *rbuf; VisBuffer *lbuf, *rbuf;
guint16 ldata[512], rdata[512]; guint16 ldata[VISUAL_SAMPLES], rdata[VISUAL_SAMPLES];
VisAudioSampleRateType rate; VisAudioSampleRateType rate;
lbuf = visual_buffer_new_with_buffer (ldata, sizeof (ldata), NULL); lbuf = visual_buffer_new_with_buffer (ldata, sizeof (ldata), NULL);
rbuf = visual_buffer_new_with_buffer (rdata, sizeof (rdata), NULL); rbuf = visual_buffer_new_with_buffer (rdata, sizeof (rdata), NULL);
if (visual->channels == 2) { if (visual->channels == 2) {
for (i = 0; i < 512; i++) { for (i = 0; i < VISUAL_SAMPLES; i++) {
ldata[i] = *data++; ldata[i] = *data++;
rdata[i] = *data++; rdata[i] = *data++;
} }
} else { } else {
for (i = 0; i < 512; i++) { for (i = 0; i < VISUAL_SAMPLES; i++) {
ldata[i] = *data; ldata[i] = *data;
rdata[i] = *data++; rdata[i] = *data++;
} }
@ -694,12 +704,12 @@ gst_visual_chain (GstPad * pad, GstBuffer * buffer)
} }
#else #else
if (visual->channels == 2) { if (visual->channels == 2) {
for (i = 0; i < 512; i++) { for (i = 0; i < VISUAL_SAMPLES; i++) {
visual->audio->plugpcm[0][i] = *data++; visual->audio->plugpcm[0][i] = *data++;
visual->audio->plugpcm[1][i] = *data++; visual->audio->plugpcm[1][i] = *data++;
} }
} else { } else {
for (i = 0; i < 512; i++) { for (i = 0; i < VISUAL_SAMPLES; i++) {
visual->audio->plugpcm[0][i] = *data; visual->audio->plugpcm[0][i] = *data;
visual->audio->plugpcm[1][i] = *data++; visual->audio->plugpcm[1][i] = *data++;
} }
@ -757,8 +767,8 @@ gst_visual_change_state (GstElement * element, GstStateChange transition)
switch (transition) { switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY: case GST_STATE_CHANGE_NULL_TO_READY:
visual->actor = visual->actor =
visual_actor_new (GST_VISUAL_GET_CLASS (visual)->plugin-> visual_actor_new (GST_VISUAL_GET_CLASS (visual)->plugin->info->
info->plugname); plugname);
visual->video = visual_video_new (); visual->video = visual_video_new ();
visual->audio = visual_audio_new (); visual->audio = visual_audio_new ();
/* can't have a play without actors */ /* can't have a play without actors */