Go to the documentation of this file.
60 printf(
"motion-test [-h]\n"
61 "test motion implementations\n");
83 for(x=0;x<
WIDTH-17;x++) {
88 printf(
"error: mmx=%d c=%d\n", d1, d2);
100 for(x=0;x<
WIDTH-17;x++) {
112 (
double)(ti / 1000.0));
116 int main(
int argc,
char **argv)
122 int flags_size = HAVE_MMXEXT ? 2 : 1;
129 printf(
"ffmpeg motion test\n");
135 for (
c = 0;
c < flags_size;
c++) {
140 for (x = 0; x < 2; x++) {
141 printf(
"%s for %dx%d pixels\n",
c ?
"mmx2" :
"mmx",
142 x ? 8 : 16, x ? 8 : 16);
void av_force_cpu_flags(int arg)
Disables cpu detection and forces the specified flags.
int64_t av_gettime_relative(void)
Get the current time in microseconds since some unspecified starting point.
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
static void test_motion(const char *name, me_cmp_func test_func, me_cmp_func ref_func)
static const struct twinvq_data tab
av_cold void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx)
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
static unsigned int av_lfg_get(AVLFG *c)
Get the next random unsigned 32-bit number using an ALFG.
int flags
Flags modifying the (de)muxer behaviour.
static uint8_t img1[WIDTH *HEIGHT]
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Context structure for the Lagged Fibonacci PRNG.
static uint8_t img2[WIDTH *HEIGHT]
printf("static const uint8_t my_array[100] = {\n")
me_cmp_func pix_abs[2][4]
static void fill_random(uint8_t *tab, int size)
#define i(width, name, range_min, range_max)
int(* me_cmp_func)(struct MpegEncContext *c, const uint8_t *blk1, const uint8_t *blk2, ptrdiff_t stride, int h)
#define AV_CPU_FLAG_MMX
standard MMX
main external API structure.
int main(int argc, char **argv)
#define AV_CPU_FLAG_MMXEXT
SSE integer functions or AMD MMX ext.
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
s EdgeDetect Foobar g libavfilter vf_edgedetect c libavfilter vf_foobar c edit libavfilter and add an entry for foobar following the pattern of the other filters edit libavfilter allfilters and add an entry for foobar following the pattern of the other filters configure make j< whatever > ffmpeg ffmpeg i you should get a foobar png with Lena edge detected That s it
#define flags(name, subs,...)