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#include "avi_rgb_decoder.h"
#include "../Winamp/wa_ipc.h"
#include <bfc/error.h>
#include <limits.h>
#include <intsafe.h>
int BMP_GetMallocSize(int32_t height, int32_t width, int32_t bits_per_pixel, size_t *out_frame_bytes)
{
if (height < 0 || width < 0)
{
return NErr_Error;
}
uint64_t frame_size = (uint64_t)height * (uint64_t)width;
if (frame_size > SIZE_MAX)
return NErr_IntegerOverflow;
uint64_t frame_bytes = frame_size * (uint64_t)bits_per_pixel;
if (frame_bytes > SIZE_MAX || frame_bytes < frame_size)
return NErr_IntegerOverflow;
*out_frame_bytes = (size_t)(frame_bytes / 8);
return NErr_Success;
}
AVIRGB *AVIRGB::CreateDecoder(nsavi::video_format *stream_format)
{
AVIRGB *decoder = new AVIRGB(stream_format);
if (!decoder)
{
return 0;
}
if (decoder->Initialize() != NErr_Success)
{
delete decoder;
return 0;
}
return decoder;
}
AVIRGB::AVIRGB(nsavi::video_format *stream_format) : stream_format(stream_format)
{
palette_retrieved=false;
video_frame=0;
video_frame_size_bytes=0;
if (stream_format->size_bytes == 1064)
{
memset(palette, 0, sizeof(palette));
memcpy(palette, (uint8_t *)stream_format + 44, 1024);
}
o=false;
}
AVIRGB::~AVIRGB()
{
free(video_frame);
}
int AVIRGB::Initialize()
{
size_t frame_bytes;
int ret = BMP_GetMallocSize(stream_format->height, stream_format->width, stream_format->bits_per_pixel, &frame_bytes);
if (ret != NErr_Success)
return ret;
video_frame=malloc(frame_bytes);
if (!video_frame)
return NErr_OutOfMemory;
video_frame_size_bytes = frame_bytes;
return NErr_Success;
}
int AVIRGB::GetPalette(RGB32 **palette)
{
if (!palette_retrieved)
{
*palette = (RGB32 *)(this->palette);
palette_retrieved=true;
return AVI_SUCCESS;
}
else
{
return AVI_FAILURE;
}
}
int AVIRGB::GetOutputProperties(int *x, int *y, int *color_format, double *aspect_ratio, int *flip)
{
if (stream_format)
{
*x = stream_format->width;
*y = stream_format->height;
*flip = 1;
switch(stream_format->bits_per_pixel)
{
case 8:
*color_format = '8BGR';
break;
// TODO:
//case 16:
//*color_format = '8GBR';
case 24:
*color_format = '42GR';
break;
case 32:
*color_format = '23GR';
break;
default:
return AVI_FAILURE;
}
return AVI_SUCCESS;
}
return AVI_FAILURE;
}
int AVIRGB::DecodeChunk(uint16_t type, const void *inputBuffer, size_t inputBufferBytes)
{
if (stream_format)
{
if (video_frame_size_bytes < inputBufferBytes)
return AVI_FAILURE;
memcpy(video_frame, inputBuffer, inputBufferBytes);
//video_frame = inputBuffer; // heh
o=true;
return AVI_SUCCESS;
}
return AVI_FAILURE;
}
void AVIRGB::Flush()
{
}
int AVIRGB::GetPicture(void **data, void **decoder_data)
{
if (o && video_frame)
{
*data =(void *) video_frame;
*decoder_data=0;
//video_frame=0;
o=false;
//video_outputted=true;
return AVI_SUCCESS;
}
return AVI_FAILURE;
}
void AVIRGB::Close()
{
delete this;
}
#define CBCLASS AVIRGB
START_DISPATCH;
CB(GET_OUTPUT_PROPERTIES, GetOutputProperties)
CB(DECODE_CHUNK, DecodeChunk)
VCB(FLUSH, Flush)
VCB(CLOSE, Close)
CB(GET_PICTURE, GetPicture)
CB(GET_PALETTE, GetPalette)
END_DISPATCH;
#undef CBCLASS
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