205 lines
6.6 KiB
C++
205 lines
6.6 KiB
C++
/*
|
|
* ZoneMinder FFMPEG implementation, $Date$, $Revision$
|
|
* Copyright (C) 2001-2008 Philip Coombes
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "zm_ffmpeg.h"
|
|
#include "zm_image.h"
|
|
#include "zm_rgb.h"
|
|
|
|
#include "zm_swscale.h"
|
|
|
|
#if HAVE_LIBSWSCALE && HAVE_LIBAVUTIL
|
|
SWScale::SWScale() : gotdefaults(false), swscale_ctx(NULL), input_avframe(NULL), output_avframe(NULL) {
|
|
Debug(4,"SWScale object created");
|
|
|
|
}
|
|
|
|
bool SWScale::init() {
|
|
/* Allocate AVFrame for the input */
|
|
#if LIBAVCODEC_VERSION_CHECK(55, 28, 1, 45, 101)
|
|
input_avframe = av_frame_alloc();
|
|
#else
|
|
input_avframe = avcodec_alloc_frame();
|
|
#endif
|
|
if ( input_avframe == NULL ) {
|
|
Error("Failed allocating AVFrame for the input");
|
|
return false;
|
|
}
|
|
|
|
/* Allocate AVFrame for the output */
|
|
#if LIBAVCODEC_VERSION_CHECK(55, 28, 1, 45, 101)
|
|
output_avframe = av_frame_alloc();
|
|
#else
|
|
output_avframe = avcodec_alloc_frame();
|
|
#endif
|
|
if ( output_avframe == NULL ) {
|
|
Error("Failed allocating AVFrame for the output");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
SWScale::~SWScale() {
|
|
|
|
/* Free up everything */
|
|
if ( input_avframe )
|
|
av_frame_free(&input_avframe);
|
|
|
|
if ( output_avframe )
|
|
av_frame_free(&output_avframe);
|
|
|
|
if ( swscale_ctx ) {
|
|
sws_freeContext(swscale_ctx);
|
|
swscale_ctx = NULL;
|
|
}
|
|
|
|
Debug(4,"SWScale object destroyed");
|
|
}
|
|
|
|
int SWScale::SetDefaults(enum _AVPIXELFORMAT in_pf, enum _AVPIXELFORMAT out_pf, unsigned int width, unsigned int height) {
|
|
|
|
/* Assign the defaults */
|
|
default_input_pf = in_pf;
|
|
default_output_pf = out_pf;
|
|
default_width = width;
|
|
default_height = height;
|
|
|
|
gotdefaults = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int SWScale::Convert(const uint8_t* in_buffer, const size_t in_buffer_size, uint8_t* out_buffer, const size_t out_buffer_size, enum _AVPIXELFORMAT in_pf, enum _AVPIXELFORMAT out_pf, unsigned int width, unsigned int height) {
|
|
/* Parameter checking */
|
|
if(in_buffer == NULL || out_buffer == NULL) {
|
|
Error("NULL Input or output buffer");
|
|
return -1;
|
|
}
|
|
// if(in_pf == 0 || out_pf == 0) {
|
|
// Error("Invalid input or output pixel formats");
|
|
// return -2;
|
|
// }
|
|
if (!width || !height) {
|
|
Error("Invalid width or height");
|
|
return -3;
|
|
}
|
|
|
|
#if LIBSWSCALE_VERSION_CHECK(0, 8, 0, 8, 0)
|
|
/* Warn if the input or output pixelformat is not supported */
|
|
if(!sws_isSupportedInput(in_pf)) {
|
|
Warning("swscale does not support the input format: %c%c%c%c",(in_pf)&0xff,((in_pf)&0xff),((in_pf>>16)&0xff),((in_pf>>24)&0xff));
|
|
}
|
|
if(!sws_isSupportedOutput(out_pf)) {
|
|
Warning("swscale does not support the output format: %c%c%c%c",(out_pf)&0xff,((out_pf>>8)&0xff),((out_pf>>16)&0xff),((out_pf>>24)&0xff));
|
|
}
|
|
#endif
|
|
|
|
/* Check the buffer sizes */
|
|
#if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0)
|
|
size_t insize = av_image_get_buffer_size(in_pf, width, height,1);
|
|
#else
|
|
size_t insize = avpicture_get_size(in_pf, width, height);
|
|
#endif
|
|
if(insize != in_buffer_size) {
|
|
Error("The input buffer size does not match the expected size for the input format. Required: %d Available: %d", insize, in_buffer_size);
|
|
return -4;
|
|
}
|
|
#if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0)
|
|
size_t outsize = av_image_get_buffer_size(out_pf, width, height,1);
|
|
#else
|
|
size_t outsize = avpicture_get_size(out_pf, width, height);
|
|
#endif
|
|
|
|
if(outsize < out_buffer_size) {
|
|
Error("The output buffer is undersized for the output format. Required: %d Available: %d", outsize, out_buffer_size);
|
|
return -5;
|
|
}
|
|
|
|
/* Get the context */
|
|
swscale_ctx = sws_getCachedContext( swscale_ctx, width, height, in_pf, width, height, out_pf, SWS_FAST_BILINEAR, NULL, NULL, NULL );
|
|
if(swscale_ctx == NULL) {
|
|
Error("Failed getting swscale context");
|
|
return -6;
|
|
}
|
|
|
|
/* Fill in the buffers */
|
|
#if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0)
|
|
if (av_image_fill_arrays(input_avframe->data, input_avframe->linesize,
|
|
(uint8_t*) in_buffer, in_pf, width, height, 1) <= 0) {
|
|
#else
|
|
if (avpicture_fill((AVPicture*) input_avframe, (uint8_t*) in_buffer,
|
|
in_pf, width, height) <= 0) {
|
|
#endif
|
|
Error("Failed filling input frame with input buffer");
|
|
return -7;
|
|
}
|
|
#if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0)
|
|
if (av_image_fill_arrays(output_avframe->data, output_avframe->linesize,
|
|
out_buffer, out_pf, width, height, 1) <= 0) {
|
|
#else
|
|
if (avpicture_fill((AVPicture*) output_avframe, out_buffer, out_pf, width,
|
|
height) <= 0) {
|
|
#endif
|
|
Error("Failed filling output frame with output buffer");
|
|
return -8;
|
|
}
|
|
|
|
/* Do the conversion */
|
|
if(!sws_scale(swscale_ctx, input_avframe->data, input_avframe->linesize, 0, height, output_avframe->data, output_avframe->linesize ) ) {
|
|
Error("swscale conversion failed");
|
|
return -10;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int SWScale::Convert(const Image* img, uint8_t* out_buffer, const size_t out_buffer_size, enum _AVPIXELFORMAT in_pf, enum _AVPIXELFORMAT out_pf, unsigned int width, unsigned int height) {
|
|
if(img->Width() != width) {
|
|
Error("Source image width differs. Source: %d Output: %d",img->Width(), width);
|
|
return -12;
|
|
}
|
|
|
|
if(img->Height() != height) {
|
|
Error("Source image height differs. Source: %d Output: %d",img->Height(), height);
|
|
return -13;
|
|
}
|
|
|
|
return Convert(img->Buffer(),img->Size(),out_buffer,out_buffer_size,in_pf,out_pf,width,height);
|
|
}
|
|
|
|
int SWScale::ConvertDefaults(const Image* img, uint8_t* out_buffer, const size_t out_buffer_size) {
|
|
|
|
if(!gotdefaults) {
|
|
Error("Defaults are not set");
|
|
return -24;
|
|
}
|
|
|
|
return Convert(img,out_buffer,out_buffer_size,default_input_pf,default_output_pf,default_width,default_height);
|
|
}
|
|
|
|
int SWScale::ConvertDefaults(const uint8_t* in_buffer, const size_t in_buffer_size, uint8_t* out_buffer, const size_t out_buffer_size) {
|
|
|
|
if(!gotdefaults) {
|
|
Error("Defaults are not set");
|
|
return -24;
|
|
}
|
|
|
|
return Convert(in_buffer,in_buffer_size,out_buffer,out_buffer_size,default_input_pf,default_output_pf,default_width,default_height);
|
|
}
|
|
#endif // HAVE_LIBSWSCALE && HAVE_LIBAVUTIL
|