vhook patch by (Charles Yates <charles dot yates at pandora dot be>)
authorCharles Yates <charles.yates@pandora.be>
Wed, 3 Sep 2003 14:20:33 +0000 (14:20 +0000)
committerMichael Niedermayer <michaelni@gmx.at>
Wed, 3 Sep 2003 14:20:33 +0000 (14:20 +0000)
Originally committed as revision 2201 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffmpeg.c
vhook/ppm.c [new file with mode: 0644]

index 445dc06..82b12c8 100644 (file)
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -163,6 +163,7 @@ static char *audio_grab_format = "audio_device";
 static char *audio_device = NULL;
 
 static int using_stdin = 0;
+static int using_vhook = 0;
 static int verbose = 1;
 
 #define DEFAULT_PASS_LOGFILENAME "ffmpeg2pass"
@@ -295,6 +296,8 @@ static int read_key(void)
 
 #else
 
+static volatile int received_sigterm = 0;
+
 /* no interactive support */
 static void term_exit(void)
 {
@@ -413,7 +416,7 @@ static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void
     dec = &ist->st->codec;
 
     /* deinterlace : must be done before any resize */
-    if (do_deinterlace) {
+    if (do_deinterlace || using_vhook) {
         int size;
 
         /* create temporary picture */
@@ -425,13 +428,22 @@ static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void
         picture2 = &picture_tmp;
         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
 
-        if (avpicture_deinterlace(picture2, picture, 
+        if (do_deinterlace && avpicture_deinterlace(picture2, picture, 
                                   dec->pix_fmt, dec->width, dec->height) < 0) {
             /* if error, do not deinterlace */
             av_free(buf);
             buf = NULL;
             picture2 = picture;
         }
+        else {
+            if (img_convert(picture2, dec->pix_fmt, picture, 
+                            dec->pix_fmt, dec->width, dec->height) < 0) {
+                /* if error, do not copy */
+                av_free(buf);
+                buf = NULL;
+                picture2 = picture;
+            }
+        }
     } else {
         picture2 = picture;
     }
@@ -1150,11 +1162,7 @@ static int av_encode(AVFormatContext **output_files,
     stream_no_data = 0;
     key = -1;
 
-#ifndef CONFIG_WIN32
     for(; received_sigterm == 0;) {
-#else
-    for(;;) {
-#endif
         int file_index, ist_index;
         AVPacket pkt;
         uint8_t *ptr;
@@ -1915,6 +1923,8 @@ static void add_frame_hooker(const char *arg)
     int i;
     char *args = av_strdup(arg);
 
+    using_vhook = 1;
+
     argv[0] = strtok(args, " ");
     while (argc < 62 && (argv[++argc] = strtok(NULL, " "))) {
     }
diff --git a/vhook/ppm.c b/vhook/ppm.c
new file mode 100644 (file)
index 0000000..8a5e188
--- /dev/null
@@ -0,0 +1,271 @@
+/*
+ * PPM Video Hook 
+ * Copyright (c) 2003 Charles Yates
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <ctype.h>
+#include "framehook.h"
+
+/** Bi-directional pipe structure.
+*/
+
+typedef struct rwpipe
+{
+       int pid;
+       FILE *reader;
+       FILE *writer;
+}
+rwpipe;
+
+/** Create a bidirectional pipe for the given command.
+*/
+
+rwpipe *rwpipe_open( int argc, char *argv[] )
+{
+       rwpipe *this = av_mallocz( sizeof( rwpipe ) );
+
+       if ( this != NULL )
+       {
+        int input[ 2 ];
+        int output[ 2 ];
+
+        pipe( input );
+        pipe( output );
+
+        this->pid = fork();
+
+        if ( this->pid == 0 )
+        {
+                       char *command = av_mallocz( 10240 );
+                       int i;
+
+                       strcpy( command, "" );
+                       for ( i = 0; i < argc; i ++ )
+                       {
+                               strcat( command, argv[ i ] );
+                               strcat( command, " " );
+                       }
+
+            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, 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.
+*/
+
+FILE *rwpipe_reader( rwpipe *this )
+{
+       if ( this != NULL )
+               return this->reader;
+       else
+               return NULL;
+}
+
+/** Write data to the pipe.
+*/
+
+FILE *rwpipe_writer( rwpipe *this )
+{
+       if ( this != NULL )
+               return this->writer;
+       else
+               return NULL;
+}
+
+/** Close the pipe and process.
+*/
+
+void rwpipe_close( rwpipe *this )
+{
+       if ( this != NULL )
+       {
+               fclose( this->reader );
+               fclose( this->writer );
+               waitpid( this->pid, NULL, 0 );
+               av_free( this );
+       }
+}
+
+typedef struct 
+{
+       rwpipe *rw;
+} 
+ContextInfo;
+
+int Configure(void **ctxp, int argc, char *argv[])
+{
+    *ctxp = av_mallocz(sizeof(ContextInfo));
+       if ( ctxp != NULL && argc > 1 )
+       {
+               ContextInfo *info = (ContextInfo *)*ctxp;
+               info->rw = rwpipe_open( argc - 1, &argv[ 1 ] );
+       }
+    return 0;
+}
+
+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;
+}
+
+int rwpipe_read_ppm_header( rwpipe *rw, int *width, int *height )
+{
+       char line[ 3 ];
+       FILE *in = rwpipe_reader( rw );
+       int max;
+
+       fgets( line, 3, in );
+       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;
+}
+
+void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width, int height, int64_t pts)
+{
+       int err = 0;
+    ContextInfo *ci = (ContextInfo *) ctx;
+    char *buf1 = 0;
+    char *buf2 = 0;
+    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 );
+
+       /* Convert to RGB24 if necessary */
+    if (pix_fmt != PIX_FMT_RGB24) {
+        int size;
+
+        size = avpicture_get_size(PIX_FMT_RGB24, width, height);
+        buf1 = av_malloc(size);
+
+        avpicture_fill(&picture1, buf1, PIX_FMT_RGB24, width, height);
+        if (img_convert(&picture1, PIX_FMT_RGB24, 
+                        picture, pix_fmt, width, height) < 0) {
+                       err = 1;
+        }
+        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);
+        buf2 = av_malloc(size);
+        avpicture_fill(&picture2, 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 )
+       {
+        if (img_convert(picture, pix_fmt, &picture2, PIX_FMT_RGB24, width, height) < 0) {
+        }
+       }
+
+    av_free(buf1);
+    av_free(buf2);
+}
+
+void Release(void *ctx)
+{
+    ContextInfo *ci;
+    ci = (ContextInfo *) ctx;
+
+    if (ctx)
+       {
+               rwpipe_close( ci->rw );
+        av_free(ctx);
+       }
+}
+