mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-11 14:11:00 -05:00
91 lines
2.1 KiB
C++
91 lines
2.1 KiB
C++
#include "mp4_jpeg_decoder.h"
|
|
#include "api__jpeg.h"
|
|
#include <api/service/waservicefactory.h>
|
|
|
|
MP4JPEGDecoder::MP4JPEGDecoder()
|
|
{
|
|
jpegLoader=0;
|
|
width=0;
|
|
height=0;
|
|
decoded_image = 0;
|
|
}
|
|
|
|
int MP4JPEGDecoder::Open(MP4FileHandle mp4_file, MP4TrackId mp4_track)
|
|
{
|
|
// load JPEG loader
|
|
jpegLoader = new JpgLoad;
|
|
|
|
if (jpegLoader)
|
|
return MP4_VIDEO_SUCCESS;
|
|
else
|
|
return MP4_VIDEO_FAILURE;
|
|
|
|
}
|
|
|
|
void MP4JPEGDecoder::Close()
|
|
{
|
|
delete jpegLoader;
|
|
delete this;
|
|
}
|
|
|
|
int MP4JPEGDecoder::GetOutputFormat(int *x, int *y, int *color_format, double *aspect_ratio)
|
|
{
|
|
if (!height || !width)
|
|
return MP4_VIDEO_FAILURE;
|
|
|
|
*x = width;
|
|
*y = height;
|
|
*color_format = '23GR'; // RGB32
|
|
return MP4_VIDEO_SUCCESS;
|
|
}
|
|
|
|
int MP4JPEGDecoder::DecodeSample(const void *inputBuffer, size_t inputBufferBytes, MP4Timestamp timestamp)
|
|
{
|
|
bool change_in_size=false;
|
|
if (decoded_image)
|
|
WASABI_API_MEMMGR->sysFree(decoded_image);
|
|
int decode_width, decode_height;
|
|
decoded_image = jpegLoader->loadImage(inputBuffer, (int)inputBufferBytes, &decode_width, &decode_height);
|
|
if (!decoded_image)
|
|
return MP4_VIDEO_FAILURE;
|
|
if (width && decode_width != width // if we have a different width from last time
|
|
|| height && decode_height != height)
|
|
change_in_size = true;
|
|
|
|
width = decode_width;
|
|
height = decode_height;
|
|
return change_in_size?MP4_VIDEO_OUTPUT_FORMAT_CHANGED:MP4_VIDEO_SUCCESS;
|
|
}
|
|
|
|
int MP4JPEGDecoder::CanHandleCodec(const char *codecName)
|
|
{
|
|
return !strcmp(codecName, "jpeg");
|
|
}
|
|
|
|
int MP4JPEGDecoder::GetPicture(void **data, void **decoder_data, MP4Timestamp *timestamp)
|
|
{
|
|
if (!decoded_image)
|
|
return MP4_VIDEO_FAILURE;
|
|
|
|
*data = decoded_image;
|
|
*decoder_data = 0;
|
|
decoded_image = 0; // wipe our hands clean of it so we don't double free
|
|
return MP4_VIDEO_SUCCESS;
|
|
}
|
|
|
|
void MP4JPEGDecoder::FreePicture(void *data, void *decoder_data)
|
|
{
|
|
WASABI_API_MEMMGR->sysFree(data);
|
|
}
|
|
|
|
#define CBCLASS MP4JPEGDecoder
|
|
START_DISPATCH;
|
|
CB(MPEG4_VIDEO_OPEN, Open)
|
|
CB(MPEG4_VIDEO_GETOUTPUTFORMAT, GetOutputFormat)
|
|
CB(MPEG4_VIDEO_DECODE, DecodeSample)
|
|
CB(MPEG4_VIDEO_HANDLES_CODEC, CanHandleCodec)
|
|
CB(MPEG4_VIDEO_GET_PICTURE, GetPicture)
|
|
VCB(MPEG4_VIDEO_FREE_PICTURE, FreePicture)
|
|
END_DISPATCH;
|
|
#undef CBCLASS
|
|
|