268 lines
8.1 KiB
C++
268 lines
8.1 KiB
C++
/*
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* ZoneMinder FFMPEG implementation, $Date$, $Revision$
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* Copyright (C) 2001-2008 Philip Coombes
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "zm_ffmpeg.h"
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#include "zm_image.h"
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#include "zm_rgb.h"
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#include "zm_swscale.h"
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#if HAVE_LIBSWSCALE && HAVE_LIBAVUTIL
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SWScale::SWScale() : gotdefaults(false), swscale_ctx(NULL), input_avframe(NULL), output_avframe(NULL) {
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Debug(4,"SWScale object created");
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/* Allocate AVFrame for the input */
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#if LIBAVCODEC_VERSION_CHECK(55, 28, 1, 45, 101)
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input_avframe = av_frame_alloc();
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#else
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input_avframe = avcodec_alloc_frame();
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#endif
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if(input_avframe == NULL) {
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Fatal("Failed allocating AVFrame for the input");
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}
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/* Allocate AVFrame for the output */
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#if LIBAVCODEC_VERSION_CHECK(55, 28, 1, 45, 101)
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output_avframe = av_frame_alloc();
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#else
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output_avframe = avcodec_alloc_frame();
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#endif
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if(output_avframe == NULL) {
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Fatal("Failed allocating AVFrame for the output");
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}
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}
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SWScale::~SWScale() {
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/* Free up everything */
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av_frame_free( &input_avframe );
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//input_avframe = NULL;
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av_frame_free( &output_avframe );
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//output_avframe = NULL;
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if(swscale_ctx) {
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sws_freeContext(swscale_ctx);
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swscale_ctx = NULL;
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}
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Debug(4,"SWScale object destroyed");
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}
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int SWScale::SetDefaults(enum _AVPIXELFORMAT in_pf, enum _AVPIXELFORMAT out_pf, unsigned int width, unsigned int height) {
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/* Assign the defaults */
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default_input_pf = in_pf;
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default_output_pf = out_pf;
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default_width = width;
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default_height = height;
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gotdefaults = true;
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return 0;
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}
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int SWScale::Convert(
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AVFrame *in_frame,
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AVFrame *out_frame
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) {
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// THe J formats are deprecated, so we need to convert
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AVPixelFormat format;
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switch ( in_frame->format ) {
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case AV_PIX_FMT_YUVJ420P :
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format = AV_PIX_FMT_YUV420P;
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break;
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case AV_PIX_FMT_YUVJ422P :
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format = AV_PIX_FMT_YUV422P;
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break;
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case AV_PIX_FMT_YUVJ444P :
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format = AV_PIX_FMT_YUV444P;
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break;
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case AV_PIX_FMT_YUVJ440P :
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format = AV_PIX_FMT_YUV440P;
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break;
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default:
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format = (AVPixelFormat)in_frame->format;
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break;
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}
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/* Get the context */
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swscale_ctx = sws_getCachedContext( swscale_ctx,
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in_frame->width, in_frame->height, format,
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out_frame->width, out_frame->height, (AVPixelFormat)out_frame->format,
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SWS_FAST_BILINEAR, NULL, NULL, NULL );
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if ( swscale_ctx == NULL ) {
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Error("Failed getting swscale context");
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return -6;
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}
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/* Do the conversion */
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if(!sws_scale(swscale_ctx, in_frame->data, in_frame->linesize, 0, in_frame->height, out_frame->data, out_frame->linesize ) ) {
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Error("swscale conversion failed");
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return -10;
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}
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return 0;
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}
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int SWScale::Convert(
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const uint8_t* in_buffer,
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const size_t in_buffer_size,
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uint8_t* out_buffer,
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const size_t out_buffer_size,
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enum _AVPIXELFORMAT in_pf,
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enum _AVPIXELFORMAT out_pf,
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unsigned int width,
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unsigned int height
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) {
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/* Parameter checking */
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if(in_buffer == NULL || out_buffer == NULL) {
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Error("NULL Input or output buffer");
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return -1;
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}
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// if(in_pf == 0 || out_pf == 0) {
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// Error("Invalid input or output pixel formats");
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// return -2;
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// }
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if (!width || !height) {
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Error("Invalid width or height");
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return -3;
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}
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// THe J formats are deprecated, so we need to convert
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switch ( in_pf ) {
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case AV_PIX_FMT_YUVJ420P :
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in_pf = AV_PIX_FMT_YUV420P;
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break;
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case AV_PIX_FMT_YUVJ422P :
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in_pf = AV_PIX_FMT_YUV422P;
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break;
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case AV_PIX_FMT_YUVJ444P :
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in_pf = AV_PIX_FMT_YUV444P;
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break;
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case AV_PIX_FMT_YUVJ440P :
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in_pf = AV_PIX_FMT_YUV440P;
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break;
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default:
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break;
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}
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#if LIBSWSCALE_VERSION_CHECK(0, 8, 0, 8, 0)
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/* Warn if the input or output pixelformat is not supported */
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if(!sws_isSupportedInput(in_pf)) {
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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));
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}
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if(!sws_isSupportedOutput(out_pf)) {
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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));
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}
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#endif
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/* Check the buffer sizes */
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#if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0)
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size_t insize = av_image_get_buffer_size(in_pf, width, height,1);
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#else
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size_t insize = avpicture_get_size(in_pf, width, height);
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#endif
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if(insize != in_buffer_size) {
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Error("The input buffer size does not match the expected size for the input format. Required: %d Available: %d", insize, in_buffer_size);
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return -4;
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}
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#if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0)
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size_t outsize = av_image_get_buffer_size(out_pf, width, height,1);
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#else
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size_t outsize = avpicture_get_size(out_pf, width, height);
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#endif
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if ( outsize < out_buffer_size ) {
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Error("The output buffer is undersized for the output format. Required: %d Available: %d", outsize, out_buffer_size);
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return -5;
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}
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/* Get the context */
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swscale_ctx = sws_getCachedContext( swscale_ctx, width, height, in_pf, width, height, out_pf, SWS_FAST_BILINEAR, NULL, NULL, NULL );
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if ( swscale_ctx == NULL ) {
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Error("Failed getting swscale context");
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return -6;
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}
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/* Fill in the buffers */
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#if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0)
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if (av_image_fill_arrays(input_avframe->data, input_avframe->linesize,
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(uint8_t*) in_buffer, in_pf, width, height, 1) <= 0) {
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#else
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if (avpicture_fill((AVPicture*) input_avframe, (uint8_t*) in_buffer,
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in_pf, width, height) <= 0) {
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#endif
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Error("Failed filling input frame with input buffer");
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return -7;
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}
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#if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0)
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if (av_image_fill_arrays(output_avframe->data, output_avframe->linesize,
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out_buffer, out_pf, width, height, 1) <= 0) {
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#else
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if (avpicture_fill((AVPicture*) output_avframe, out_buffer, out_pf, width,
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height) <= 0) {
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#endif
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Error("Failed filling output frame with output buffer");
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return -8;
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}
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/* Do the conversion */
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if(!sws_scale(swscale_ctx, input_avframe->data, input_avframe->linesize, 0, height, output_avframe->data, output_avframe->linesize ) ) {
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Error("swscale conversion failed");
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return -10;
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}
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return 0;
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}
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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) {
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if ( img->Width() != width ) {
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Error("Source image width differs. Source: %d Output: %d",img->Width(), width);
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return -12;
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}
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if ( img->Height() != height ) {
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Error("Source image height differs. Source: %d Output: %d",img->Height(), height);
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return -13;
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}
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return Convert(img->Buffer(), img->Size(), out_buffer, out_buffer_size, in_pf, out_pf, width, height);
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}
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int SWScale::ConvertDefaults(const Image* img, uint8_t* out_buffer, const size_t out_buffer_size) {
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if ( !gotdefaults ) {
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Error("Defaults are not set");
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return -24;
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}
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return Convert(img,out_buffer,out_buffer_size,default_input_pf,default_output_pf,default_width,default_height);
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}
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int SWScale::ConvertDefaults(const uint8_t* in_buffer, const size_t in_buffer_size, uint8_t* out_buffer, const size_t out_buffer_size) {
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if ( !gotdefaults ) {
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Error("Defaults are not set");
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return -24;
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}
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return Convert(in_buffer,in_buffer_size,out_buffer,out_buffer_size,default_input_pf,default_output_pf,default_width,default_height);
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}
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#endif // HAVE_LIBSWSCALE && HAVE_LIBAVUTIL
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