test_pattern.h File Reference

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Typedefs
typedef struct test_pattern	test_pattern_t

Functions
asciichat_error_t	test_pattern_create (int width, int height, test_pattern_t **out)
asciichat_error_t	test_pattern_resize (test_pattern_t *pattern, int width, int height)
asciichat_error_t	test_pattern_render (test_pattern_t *pattern, int index, double time_ms, bool cadence)
const uint8_t *	test_pattern_rgba (test_pattern_t *pattern)
image_t *	test_pattern_image (test_pattern_t *pattern)
void	test_pattern_destroy (test_pattern_t *pattern)

Typedef Documentation

test_pattern_t

typedef struct test_pattern test_pattern_t

Definition at line 4 of file video/anim/test_pattern.h.

Function Documentation

test_pattern_create()

asciichat_error_t test_pattern_create	(	int	width,
		int	height,
		test_pattern_t **	out )

Independent, reusable RGB renderer. Time is elapsed milliseconds, not frame count.

Definition at line 109 of file video/anim/test_pattern.c.

                                                                                   {
  if (!out)
    return SET_ERRNO(ERROR_INVALID_PARAM, "Missing test pattern output");
  *out = NULL;
  test_pattern_t *p = SAFE_CALLOC(1, sizeof(*p), test_pattern_t *);
  asciichat_error_t result = test_pattern_resize(p, width, height);
  if (result != ASCIICHAT_OK) {
    test_pattern_destroy(p);
    return result;
  }
  *out = p;
  return ASCIICHAT_OK;
}

References ASCIICHAT_OK, ERROR_INVALID_PARAM, height, out, SAFE_CALLOC, SET_ERRNO, test_pattern_destroy(), test_pattern_resize(), and width.

Referenced by TestPatternBinding::TestPatternBinding().

test_pattern_destroy()

void test_pattern_destroy

(

test_pattern_t *

pattern

)

Definition at line 122 of file video/anim/test_pattern.c.

                                             {
  if (!p)
    return;
  if (p->image)
    image_destroy(p->image);
  SAFE_FREE(p->rgba);
  SAFE_FREE(p);
}

References test_pattern::image, image_destroy(), test_pattern::rgba, and SAFE_FREE.

Referenced by media_source_destroy(), test_pattern_create(), and TestPatternBinding::~TestPatternBinding().

test_pattern_image()

image_t * test_pattern_image

(

test_pattern_t *

pattern

)

Definition at line 130 of file video/anim/test_pattern.c.

                                               {
  return p ? p->image : NULL;
}

References test_pattern::image.

test_pattern_render()

asciichat_error_t test_pattern_render	(	test_pattern_t *	pattern,
		int	index,
		double	time_ms,
		bool	cadence )

Definition at line 149 of file video/anim/test_pattern.c.

                                                                                                  {
  animation_sample_t sample;
  animation_config_t config = {.type = ANIMATION_TEST_PATTERN, .fps = 60, .speed = 1};
  asciichat_error_t err = animation_sample_at(config, time_ms / 1000.0, &sample);
  if (err != ASCIICHAT_OK)
    return err;
  animation_target_t target = {.type = ANIMATION_TARGET_TEST_PATTERN,
                               .test_pattern = {.context = p, .index = index, .cadence = cadence}};
  return animation_apply(&sample, &target);
}

References animation_apply(), animation_sample_at(), ANIMATION_TARGET_TEST_PATTERN, ANIMATION_TEST_PATTERN, ASCIICHAT_OK, and index.

Referenced by TestPatternBinding::render().

test_pattern_resize()

asciichat_error_t test_pattern_resize	(	test_pattern_t *	pattern,
		int	width,
		int	height )

Definition at line 65 of file video/anim/test_pattern.c.

                                                                                {
  if (!p || width < 1 || height < 1)
    return SET_ERRNO(ERROR_INVALID_PARAM, "Invalid test pattern dimensions");
  if (p->image && p->image->w == width && p->image->h == height)
    return ASCIICHAT_OK;
  image_t *next = image_new(width, height);
  if (!next)
    return SET_ERRNO(ERROR_MEMORY, "Test pattern image allocation failed");
  if (p->image)
    image_destroy(p->image);
  p->image = next;
  SAFE_FREE(p->rgba);
  return ASCIICHAT_OK;
}

References ASCIICHAT_OK, ERROR_INVALID_PARAM, ERROR_MEMORY, image_t::h, height, test_pattern::image, image_destroy(), image_new(), test_pattern::rgba, SAFE_FREE, SET_ERRNO, image_t::w, and width.

Referenced by TestPatternBinding::render(), and test_pattern_create().

test_pattern_rgba()

const uint8_t * test_pattern_rgba

(

test_pattern_t *

pattern

)

Reusable RGBA view for browser upload; invalidated by resize/destroy.

Definition at line 134 of file video/anim/test_pattern.c.

                                                    {
  if (!p || !p->image)
    return NULL;
  size_t count = (size_t)p->image->w * p->image->h;
  if (!p->rgba)
    p->rgba = SAFE_MALLOC(count * 4, uint8_t *);
  for (size_t i = 0; i < count; i++) {
    p->rgba[i * 4] = p->image->pixels[i].r;
    p->rgba[i * 4 + 1] = p->image->pixels[i].g;
    p->rgba[i * 4 + 2] = p->image->pixels[i].b;
    p->rgba[i * 4 + 3] = 255;
  }
  return p->rgba;
}

References rgb_pixel_t::b, rgb_pixel_t::g, image_t::h, test_pattern::image, image_t::pixels, rgb_pixel_t::r, test_pattern::rgba, SAFE_MALLOC, and image_t::w.

Referenced by TestPatternBinding::render().