45 #if FF_API_CONTEXT_SIZE 61 static const uint32_t
T[64] = {
62 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
63 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
64 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
65 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
67 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
68 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
69 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
70 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
72 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
73 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
74 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
75 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
77 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
78 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
79 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
80 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391,
83 #define CORE(i, a, b, c, d) do { \ 84 t = S[i >> 4][i & 3]; \ 88 if (i < 16) a += (d ^ (b & (c ^ d))) + X[ i & 15]; \ 89 else a += (c ^ (d & (c ^ b))) + X[(1 + 5*i) & 15]; \ 91 if (i < 48) a += (b ^ c ^ d) + X[(5 + 3*i) & 15]; \ 92 else a += (c ^ (b | ~d)) + X[( 7*i) & 15]; \ 94 a = b + (a << t | a >> (32 - t)); \ 97 static void body(uint32_t
ABCD[4], uint32_t X[16])
101 unsigned int a = ABCD[3];
102 unsigned int b = ABCD[2];
103 unsigned int c = ABCD[1];
104 unsigned int d = ABCD[0];
107 for (i = 0; i < 16; i++)
112 for (i = 0; i < 64; i++) {
122 CORE( i, a,b,c,d); CORE((i+1),d,a,b,c); \ 123 CORE((i+2),c,d,a,b); CORE((i+3),b,c,d,a) 124 #define CORE4(i) CORE2(i); CORE2((i+4)); CORE2((i+8)); CORE2((i+12)) 138 ctx->
ABCD[0] = 0x10325476;
139 ctx->
ABCD[1] = 0x98badcfe;
140 ctx->
ABCD[2] = 0xefcdab89;
141 ctx->
ABCD[3] = 0x67452301;
151 for (i = 0; i <
len; i++) {
152 ctx->
block[j++] = src[i];
166 while ((ctx->
len & 63) != 56)
171 for (i = 0; i < 4; i++)
190 for (i = 0; i < 16; i++)
191 printf(
"%02x", md5[i]);
200 for (i = 0; i < 1000; i++)
206 for (i = 0; i < 1000; i++)
static const uint32_t T[64]
static const uint8_t S[4][4]
memory handling functions
static void body(uint32_t ABCD[4], uint32_t X[16])
struct AVMD5 * av_md5_alloc(void)
static void print_md5(void *log_ctx, int level, uint8_t md5[16])
void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len)
void av_md5_update(AVMD5 *ctx, const uint8_t *src, const int len)
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_dlog(ac->avr, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
int main(int argc, char **argv)
void av_md5_init(AVMD5 *ctx)
#define CORE(i, a, b, c, d)
void av_md5_final(AVMD5 *ctx, uint8_t *dst)
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...