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-rw-r--r--vhook/ppm.c374
1 files changed, 0 insertions, 374 deletions
diff --git a/vhook/ppm.c b/vhook/ppm.c
deleted file mode 100644
index 86fad1dc59..0000000000
--- a/vhook/ppm.c
+++ /dev/null
@@ -1,374 +0,0 @@
-/*
- * PPM Video Hook
- * Copyright (c) 2003 Charles Yates
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <ctype.h>
-#include "libavutil/avstring.h"
-#include "libavformat/framehook.h"
-#include "libavformat/avformat.h"
-#include "libswscale/swscale.h"
-#undef fprintf
-
-static int sws_flags = SWS_BICUBIC;
-
-/** Bi-directional pipe structure.
-*/
-
-typedef struct rwpipe
-{
- int pid;
- FILE *reader;
- FILE *writer;
-}
-rwpipe;
-
-/** Create a bidirectional pipe for the given command.
-*/
-
-static rwpipe *rwpipe_open( int argc, char *argv[] )
-{
- rwpipe *this = av_mallocz( sizeof( rwpipe ) );
-
- if ( this != NULL )
- {
- int input[ 2 ];
- int output[ 2 ];
-
- if (!pipe( input ))
- return NULL;
-
- if (!pipe( output ))
- return NULL;
-
- this->pid = fork();
-
- if ( this->pid == 0 )
- {
-#define COMMAND_SIZE 10240
- char *command = av_mallocz( COMMAND_SIZE );
- int i;
-
- strcpy( command, "" );
- for ( i = 0; i < argc; i ++ )
- {
- av_strlcat( command, argv[ i ], COMMAND_SIZE );
- av_strlcat( command, " ", COMMAND_SIZE );
- }
-
- dup2( output[ 0 ], STDIN_FILENO );
- dup2( input[ 1 ], STDOUT_FILENO );
-
- close( input[ 0 ] );
- close( input[ 1 ] );
- close( output[ 0 ] );
- close( output[ 1 ] );
-
- execl("/bin/sh", "sh", "-c", command, (char*)NULL );
- _exit( 255 );
- }
- else
- {
- close( input[ 1 ] );
- close( output[ 0 ] );
-
- this->reader = fdopen( input[ 0 ], "r" );
- this->writer = fdopen( output[ 1 ], "w" );
- }
- }
-
- return this;
-}
-
-/** Read data from the pipe.
-*/
-
-static FILE *rwpipe_reader( rwpipe *this )
-{
- if ( this != NULL )
- return this->reader;
- else
- return NULL;
-}
-
-/** Write data to the pipe.
-*/
-
-static FILE *rwpipe_writer( rwpipe *this )
-{
- if ( this != NULL )
- return this->writer;
- else
- return NULL;
-}
-
-/* Read a number from the pipe - assumes PNM style headers.
-*/
-
-static int rwpipe_read_number( rwpipe *rw )
-{
- int value = 0;
- int c = 0;
- FILE *in = rwpipe_reader( rw );
-
- do
- {
- c = fgetc( in );
-
- while( c != EOF && !isdigit( c ) && c != '#' )
- c = fgetc( in );
-
- if ( c == '#' )
- while( c != EOF && c != '\n' )
- c = fgetc( in );
- }
- while ( c != EOF && !isdigit( c ) );
-
- while( c != EOF && isdigit( c ) )
- {
- value = value * 10 + ( c - '0' );
- c = fgetc( in );
- }
-
- return value;
-}
-
-/** Read a PPM P6 header.
-*/
-
-static int rwpipe_read_ppm_header( rwpipe *rw, int *width, int *height )
-{
- char line[ 3 ];
- FILE *in = rwpipe_reader( rw );
- int max;
-
- if (!fgets( line, 3, in ))
- return -1;
-
- if ( !strncmp( line, "P6", 2 ) )
- {
- *width = rwpipe_read_number( rw );
- *height = rwpipe_read_number( rw );
- max = rwpipe_read_number( rw );
- return max != 255 || *width <= 0 || *height <= 0;
- }
- return 1;
-}
-
-/** Close the pipe and process.
-*/
-
-static void rwpipe_close( rwpipe *this )
-{
- if ( this != NULL )
- {
- fclose( this->reader );
- fclose( this->writer );
- waitpid( this->pid, NULL, 0 );
- av_free( this );
- }
-}
-
-/** Context info for this vhook - stores the pipe and image buffers.
-*/
-
-typedef struct
-{
- rwpipe *rw;
- int size1;
- char *buf1;
- int size2;
- char *buf2;
-
- // This vhook first converts frame to RGB ...
- struct SwsContext *toRGB_convert_ctx;
- // ... then processes it via a PPM command pipe ...
- // ... and finally converts back frame from RGB to initial format
- struct SwsContext *fromRGB_convert_ctx;
-}
-ContextInfo;
-
-/** Initialise the context info for this vhook.
-*/
-
-int Configure(void **ctxp, int argc, char *argv[])
-{
- if ( argc > 1 )
- {
- *ctxp = av_mallocz(sizeof(ContextInfo));
- if ( *ctxp != NULL && argc > 1 )
- {
- ContextInfo *info = (ContextInfo *)*ctxp;
- info->rw = rwpipe_open( argc - 1, &argv[ 1 ] );
- return 0;
- }
- }
- return 1;
-}
-
-/** Process a frame.
-*/
-
-void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width, int height, int64_t pts)
-{
- int err = 0;
- ContextInfo *ci = (ContextInfo *) ctx;
- AVPicture picture1;
- AVPicture picture2;
- AVPicture *pict = picture;
- int out_width;
- int out_height;
- int i;
- uint8_t *ptr = NULL;
- FILE *in = rwpipe_reader( ci->rw );
- FILE *out = rwpipe_writer( ci->rw );
-
- /* Check that we have a pipe to talk to. */
- if ( in == NULL || out == NULL )
- err = 1;
-
- /* Convert to RGB24 if necessary */
- if ( !err && pix_fmt != PIX_FMT_RGB24 )
- {
- int size = avpicture_get_size(PIX_FMT_RGB24, width, height);
-
- if ( size != ci->size1 )
- {
- av_free( ci->buf1 );
- ci->buf1 = av_malloc(size);
- ci->size1 = size;
- err = ci->buf1 == NULL;
- }
-
- if ( !err )
- {
- avpicture_fill(&picture1, ci->buf1, PIX_FMT_RGB24, width, height);
-
- // if we already got a SWS context, let's realloc if is not re-useable
- ci->toRGB_convert_ctx = sws_getCachedContext(ci->toRGB_convert_ctx,
- width, height, pix_fmt,
- width, height, PIX_FMT_RGB24,
- sws_flags, NULL, NULL, NULL);
- if (ci->toRGB_convert_ctx == NULL) {
- av_log(NULL, AV_LOG_ERROR,
- "Cannot initialize the toRGB conversion context\n");
- return;
- }
-
-// img_convert parameters are 2 first destination, then 4 source
-// sws_scale parameters are context, 4 first source, then 2 destination
- sws_scale(ci->toRGB_convert_ctx,
- picture->data, picture->linesize, 0, height,
- picture1.data, picture1.linesize);
-
- pict = &picture1;
- }
- }
-
- /* Write out the PPM */
- if ( !err )
- {
- ptr = pict->data[ 0 ];
- fprintf( out, "P6\n%d %d\n255\n", width, height );
- for ( i = 0; !err && i < height; i ++ )
- {
- err = !fwrite( ptr, width * 3, 1, out );
- ptr += pict->linesize[ 0 ];
- }
- if ( !err )
- err = fflush( out );
- }
-
- /* Read the PPM returned. */
- if ( !err && !rwpipe_read_ppm_header( ci->rw, &out_width, &out_height ) )
- {
- int size = avpicture_get_size(PIX_FMT_RGB24, out_width, out_height);
-
- if ( size != ci->size2 )
- {
- av_free( ci->buf2 );
- ci->buf2 = av_malloc(size);
- ci->size2 = size;
- err = ci->buf2 == NULL;
- }
-
- if ( !err )
- {
- avpicture_fill(&picture2, ci->buf2, PIX_FMT_RGB24, out_width, out_height);
- ptr = picture2.data[ 0 ];
- for ( i = 0; !err && i < out_height; i ++ )
- {
- err = !fread( ptr, out_width * 3, 1, in );
- ptr += picture2.linesize[ 0 ];
- }
- }
- }
-
- /* Convert the returned PPM back to the input format */
- if ( !err )
- {
- /* The out_width/out_height returned from the PPM
- * filter won't necessarily be the same as width and height
- * but it will be scaled anyway to width/height.
- */
- av_log(NULL, AV_LOG_DEBUG,
- "PPM vhook: Input dimensions: %d x %d Output dimensions: %d x %d\n",
- width, height, out_width, out_height);
- ci->fromRGB_convert_ctx = sws_getCachedContext(ci->fromRGB_convert_ctx,
- out_width, out_height, PIX_FMT_RGB24,
- width, height, pix_fmt,
- sws_flags, NULL, NULL, NULL);
- if (ci->fromRGB_convert_ctx == NULL) {
- av_log(NULL, AV_LOG_ERROR,
- "Cannot initialize the fromRGB conversion context\n");
- return;
- }
-
-// img_convert parameters are 2 first destination, then 4 source
-// sws_scale parameters are context, 4 first source, then 2 destination
- sws_scale(ci->fromRGB_convert_ctx,
- picture2.data, picture2.linesize, 0, out_height,
- picture->data, picture->linesize);
- }
-}
-
-/** Clean up the effect.
-*/
-
-void Release(void *ctx)
-{
- ContextInfo *ci;
- ci = (ContextInfo *) ctx;
-
- if (ctx)
- {
- rwpipe_close( ci->rw );
- av_free( ci->buf1 );
- av_free( ci->buf2 );
- sws_freeContext(ci->toRGB_convert_ctx);
- sws_freeContext(ci->fromRGB_convert_ctx);
- av_free(ctx);
- }
-}
-
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