Add librtmp to obs-outputs
Note that this is a somewhat heavily modified custom version of librtmp. I modified all the platform specific code that we were using for the OBS1 to make it platform-independent. I don't really like the code in this library, but it works well enough, so I can't really fault anyone for it. It's just very.. unclean. Even for a C library, quite unclean. Some parts are also a little less safe than I'd prefer as well.
This commit is contained in:
109
plugins/obs-outputs/librtmp/cencode.c
Normal file
109
plugins/obs-outputs/librtmp/cencode.c
Normal file
@@ -0,0 +1,109 @@
|
||||
/*
|
||||
cencoder.c - c source to a base64 encoding algorithm implementation
|
||||
|
||||
This is part of the libb64 project, and has been placed in the public domain.
|
||||
For details, see http://sourceforge.net/projects/libb64
|
||||
*/
|
||||
|
||||
#include "cencode.h"
|
||||
|
||||
const int CHARS_PER_LINE = 72;
|
||||
|
||||
void base64_init_encodestate(base64_encodestate* state_in)
|
||||
{
|
||||
state_in->step = step_A;
|
||||
state_in->result = 0;
|
||||
state_in->stepcount = 0;
|
||||
}
|
||||
|
||||
char base64_encode_value(char value_in)
|
||||
{
|
||||
static const char* encoding = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
||||
if (value_in > 63) return '=';
|
||||
return encoding[(int)value_in];
|
||||
}
|
||||
|
||||
int base64_encode_block(const char* plaintext_in, int length_in, char* code_out, base64_encodestate* state_in)
|
||||
{
|
||||
const char* plainchar = plaintext_in;
|
||||
const char* const plaintextend = plaintext_in + length_in;
|
||||
char* codechar = code_out;
|
||||
char result;
|
||||
char fragment;
|
||||
|
||||
result = state_in->result;
|
||||
|
||||
switch (state_in->step)
|
||||
{
|
||||
while (1)
|
||||
{
|
||||
case step_A:
|
||||
if (plainchar == plaintextend)
|
||||
{
|
||||
state_in->result = result;
|
||||
state_in->step = step_A;
|
||||
return (int)(codechar - code_out);
|
||||
}
|
||||
fragment = *plainchar++;
|
||||
result = (fragment & 0x0fc) >> 2;
|
||||
*codechar++ = base64_encode_value(result);
|
||||
result = (fragment & 0x003) << 4;
|
||||
case step_B:
|
||||
if (plainchar == plaintextend)
|
||||
{
|
||||
state_in->result = result;
|
||||
state_in->step = step_B;
|
||||
return (int)(codechar - code_out);
|
||||
}
|
||||
fragment = *plainchar++;
|
||||
result |= (fragment & 0x0f0) >> 4;
|
||||
*codechar++ = base64_encode_value(result);
|
||||
result = (fragment & 0x00f) << 2;
|
||||
case step_C:
|
||||
if (plainchar == plaintextend)
|
||||
{
|
||||
state_in->result = result;
|
||||
state_in->step = step_C;
|
||||
return (int)(codechar - code_out);
|
||||
}
|
||||
fragment = *plainchar++;
|
||||
result |= (fragment & 0x0c0) >> 6;
|
||||
*codechar++ = base64_encode_value(result);
|
||||
result = (fragment & 0x03f) >> 0;
|
||||
*codechar++ = base64_encode_value(result);
|
||||
|
||||
++(state_in->stepcount);
|
||||
/*if (state_in->stepcount == CHARS_PER_LINE/4)
|
||||
{
|
||||
*codechar++ = '\n';
|
||||
state_in->stepcount = 0;
|
||||
}*/
|
||||
}
|
||||
}
|
||||
/* control should not reach here */
|
||||
return (int)(codechar - code_out);
|
||||
}
|
||||
|
||||
int base64_encode_blockend(char* code_out, base64_encodestate* state_in)
|
||||
{
|
||||
char* codechar = code_out;
|
||||
|
||||
switch (state_in->step)
|
||||
{
|
||||
case step_B:
|
||||
*codechar++ = base64_encode_value(state_in->result);
|
||||
*codechar++ = '=';
|
||||
*codechar++ = '=';
|
||||
break;
|
||||
case step_C:
|
||||
*codechar++ = base64_encode_value(state_in->result);
|
||||
*codechar++ = '=';
|
||||
break;
|
||||
case step_A:
|
||||
break;
|
||||
}
|
||||
*codechar++ = '\0';
|
||||
|
||||
return (int)(codechar - code_out);
|
||||
}
|
||||
|
Reference in New Issue
Block a user