mirror of https://git.ffmpeg.org/ffmpeg.git
watermark filter by (Marcus Engene <ffmpeg engene se>)
Originally committed as revision 3983 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
parent
8dd2a893dd
commit
21754ce65c
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@ -7,7 +7,7 @@ CFLAGS=-fPIC $(SHCFLAGS) -I.. -I$(SRC_PATH) -I$(SRC_PATH)/libavformat -I$(SRC_PA
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ifeq ($(CONFIG_DARWIN),yes)
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SHFLAGS+=-flat_namespace -undefined suppress
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endif
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HOOKS=null.so fish.so ppm.so
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HOOKS=null.so fish.so ppm.so watermark.so
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ifeq ($(HAVE_IMLIB2),yes)
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HOOKS += imlib2.so
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@ -0,0 +1,441 @@
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/*
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* Watermark Hook
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* Copyright (c) 2005 Marcus Engene myfirstname(at)mylastname.se
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*
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* The watermarkpicture works like this. (Assuming colorintencities 0..0xff)
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* Per color do this:
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* If mask color is 0x80, no change to original frame.
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* If mask color is < 0x80 the abs difference is subtracted from frame. If
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* result < 0, result = 0
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* If mask color is > 0x80 the abs difference is added to frame. If result
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* > 0xff, result = 0xff
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*
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* This way a mask that is visible both in light pictures and in dark can be
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* made (fex by using a picture generated by gimp and the bump map tool).
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*
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* An example watermark file is at
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* http://engene.se/ffmpeg_watermark.gif
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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//#include <stdlib.h>
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//#include <fcntl.h>
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#include <unistd.h>
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#include <stdarg.h>
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#include "common.h"
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#include "avformat.h"
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#include "framehook.h"
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typedef struct {
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char filename[2000];
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int x_size;
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int y_size;
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/* get_watermark_picture() variables */
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AVFormatContext *pFormatCtx;
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const char *p_ext;
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int videoStream;
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int frameFinished;
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AVCodecContext *pCodecCtx;
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AVCodec *pCodec;
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AVFrame *pFrame;
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AVPacket packet;
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int numBytes;
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uint8_t *buffer;
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int i;
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AVInputFormat *file_iformat;
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AVStream *st;
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int is_done;
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AVFrame *pFrameRGB;
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} ContextInfo;
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int get_watermark_picture(ContextInfo *ci, int cleanup);
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/****************************************************************************
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*
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****************************************************************************/
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void Release(void *ctx)
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{
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ContextInfo *ci;
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ci = (ContextInfo *) ctx;
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if (ci) get_watermark_picture(ci, 1);
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if (ctx)
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av_free(ctx);
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}
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/****************************************************************************
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*
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****************************************************************************/
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int Configure(void **ctxp, int argc, char *argv[])
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{
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ContextInfo *ci;
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int c;
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if (0 == (*ctxp = av_mallocz(sizeof(ContextInfo)))) return -1;
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ci = (ContextInfo *) *ctxp;
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optind = 0;
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// Struct is mallocz:ed so no need to reset.
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while ((c = getopt(argc, argv, "f:")) > 0) {
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switch (c) {
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case 'f':
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strncpy(ci->filename, optarg, 1999);
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ci->filename[1999] = 0;
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break;
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default:
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av_log(NULL, AV_LOG_DEBUG, "Unrecognized argument '%s'\n", argv[optind]);
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return -1;
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}
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}
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//
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if (0 == ci->filename[0]) return -1;
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av_register_all();
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return get_watermark_picture(ci, 0);
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return 0;
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}
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/****************************************************************************
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* Why is this a void returning functions? I want to be able to go wrong!
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****************************************************************************/
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void Process(void *ctx,
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AVPicture *picture,
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enum PixelFormat pix_fmt,
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int src_width,
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int src_height,
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int64_t pts)
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{
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ContextInfo *ci = (ContextInfo *) ctx;
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char *buf = 0;
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AVPicture picture1;
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AVPicture *pict = picture;
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AVFrame *pFrameRGB;
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int xm_size;
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int ym_size;
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// int retval = -1;
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int x;
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int y;
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int offs, offsm;
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int mpoffs;
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uint32_t *p_pixel = 0;
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uint32_t pixel_meck;
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uint32_t pixel;
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uint32_t pixelm;
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int tmp;
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//?? (void) ci;
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if (pix_fmt != PIX_FMT_RGBA32) {
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int size;
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size = avpicture_get_size(PIX_FMT_RGBA32, src_width, src_height);
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buf = av_malloc(size);
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avpicture_fill(&picture1, buf, PIX_FMT_RGBA32, src_width, src_height);
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if (img_convert(&picture1, PIX_FMT_RGBA32,
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picture, pix_fmt, src_width, src_height) < 0) {
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av_free(buf);
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return;
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}
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pict = &picture1;
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}
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/* Insert filter code here */ /* ok */
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// Get me next frame
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if (0 > get_watermark_picture(ci, 0)) {
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return;
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}
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// These are the three original static variables in the ffmpeg hack.
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pFrameRGB = ci->pFrameRGB;
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xm_size = ci->x_size;
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ym_size = ci->y_size;
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// I'll do the *4 => <<2 crap later. Most compilers understand that anyway.
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// According to avcodec.h PIX_FMT_RGBA32 is handled in endian specific manner.
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for (y=0; y<src_height; y++) {
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offs = y * (src_width * 4);
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offsm = (((y * ym_size) / src_height) * 4) * xm_size; // offsm first in maskline. byteoffs!
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for (x=0; x<src_width; x++) {
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mpoffs = offsm + (((x * xm_size) / src_width) * 4);
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p_pixel = (uint32_t *)&((pFrameRGB->data[0])[mpoffs]);
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pixelm = *p_pixel;
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p_pixel = (uint32_t *)&((pict->data[0])[offs]);
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pixel = *p_pixel;
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// pixelm = *((uint32_t *)&(pFrameRGB->data[mpoffs]));
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pixel_meck = pixel & 0xff000000;
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// R
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tmp = (int)((pixel >> 16) & 0xff) + (int)((pixelm >> 16) & 0xff) - 0x80;
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if (tmp > 255) tmp = 255;
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if (tmp < 0) tmp = 0;
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pixel_meck |= (tmp << 16) & 0xff0000;
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// G
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tmp = (int)((pixel >> 8) & 0xff) + (int)((pixelm >> 8) & 0xff) - 0x80;
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if (tmp > 255) tmp = 255;
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if (tmp < 0) tmp = 0;
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pixel_meck |= (tmp << 8) & 0xff00;
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// B
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tmp = (int)((pixel >> 0) & 0xff) + (int)((pixelm >> 0) & 0xff) - 0x80;
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if (tmp > 255) tmp = 255;
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if (tmp < 0) tmp = 0;
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pixel_meck |= (tmp << 0) & 0xff;
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// test:
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//pixel_meck = pixel & 0xff000000;
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//pixel_meck |= (pixelm & 0x00ffffff);
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*p_pixel = pixel_meck;
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offs += 4;
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} // foreach X
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} // foreach Y
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if (pix_fmt != PIX_FMT_RGBA32) {
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if (img_convert(picture, pix_fmt,
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&picture1, PIX_FMT_RGBA32, src_width, src_height) < 0) {
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}
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}
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av_free(buf);
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}
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/****************************************************************************
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* When cleanup == 0, we try to get the next frame. If no next frame, nothing
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* is done.
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*
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* This code follows the example on
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* http://www.inb.uni-luebeck.de/~boehme/using_libavcodec.html
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*
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* 0 = ok, -1 = error
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****************************************************************************/
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int get_watermark_picture(ContextInfo *ci, int cleanup)
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{
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if (1 == ci->is_done && 0 == cleanup) return 0;
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// Yes, *pFrameRGB arguments must be null the first time otherwise it's not good..
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// This block is only executed the first time we enter this function.
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if (0 == ci->pFrameRGB &&
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0 == cleanup)
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{
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/*
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* The last three parameters specify the file format, buffer size and format
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* parameters; by simply specifying NULL or 0 we ask libavformat to auto-detect
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* the format and use a default buffer size. (Didn't work!)
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*/
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if (av_open_input_file(&ci->pFormatCtx, ci->filename, NULL, 0, NULL) != 0) {
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// Martin says this should not be necessary but it failed for me sending in
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// NULL instead of file_iformat to av_open_input_file()
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ci->i = strlen(ci->filename);
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if (0 == ci->i) {
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av_log(NULL, AV_LOG_DEBUG, "get_watermark_picture() No filename to watermark vhook\n");
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return -1;
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}
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while (ci->i > 0) {
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if (ci->filename[ci->i] == '.') {
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ci->i++;
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break;
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}
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ci->i--;
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}
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ci->p_ext = &(ci->filename[ci->i]);
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ci->file_iformat = av_find_input_format (ci->p_ext);
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if (0 == ci->file_iformat) {
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av_log(NULL, AV_LOG_DEBUG, "get_watermark_picture() Really failed to find iformat [%s]\n", ci->p_ext);
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return -1;
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}
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// now continues the Martin template.
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if (av_open_input_file(&ci->pFormatCtx, ci->filename, ci->file_iformat, 0, NULL)!=0) {
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av_log(NULL, AV_LOG_DEBUG, "get_watermark_picture() Failed to open input file [%s]\n", ci->filename);
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return -1;
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}
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}
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/*
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* This fills the streams field of the AVFormatContext with valid information.
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*/
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if(av_find_stream_info(ci->pFormatCtx)<0) {
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av_log(NULL, AV_LOG_DEBUG, "get_watermark_picture() Failed to find stream info\n");
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return -1;
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}
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/*
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* As mentioned in the introduction, we'll handle only video streams, not audio
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* streams. To make things nice and easy, we simply use the first video stream we
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* find.
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*/
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ci->videoStream=-1;
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for(ci->i = 0; ci->i < ci->pFormatCtx->nb_streams; ci->i++)
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if(ci->pFormatCtx->streams[ci->i]->codec.codec_type==CODEC_TYPE_VIDEO)
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{
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ci->videoStream = ci->i;
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break;
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}
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if(ci->videoStream == -1) {
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av_log(NULL, AV_LOG_DEBUG, "get_watermark_picture() Failed to find any video stream\n");
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return -1;
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}
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ci->st = ci->pFormatCtx->streams[ci->videoStream];
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ci->x_size = ci->st->codec.width;
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ci->y_size = ci->st->codec.height;
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// Get a pointer to the codec context for the video stream
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ci->pCodecCtx = &ci->pFormatCtx->streams[ci->videoStream]->codec;
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/*
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* OK, so now we've got a pointer to the so-called codec context for our video
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* stream, but we still have to find the actual codec and open it.
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*/
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// Find the decoder for the video stream
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ci->pCodec = avcodec_find_decoder(ci->pCodecCtx->codec_id);
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if(ci->pCodec == NULL) {
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av_log(NULL, AV_LOG_DEBUG, "get_watermark_picture() Failed to find any codec\n");
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return -1;
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}
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// Inform the codec that we can handle truncated bitstreams -- i.e.,
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// bitstreams where frame boundaries can fall in the middle of packets
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if (ci->pCodec->capabilities & CODEC_CAP_TRUNCATED)
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ci->pCodecCtx->flags|=CODEC_FLAG_TRUNCATED;
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// Open codec
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if(avcodec_open(ci->pCodecCtx, ci->pCodec)<0) {
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av_log(NULL, AV_LOG_DEBUG, "get_watermark_picture() Failed to open codec\n");
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return -1;
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}
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// Hack to correct wrong frame rates that seem to be generated by some
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// codecs
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if (ci->pCodecCtx->frame_rate>1000 && ci->pCodecCtx->frame_rate_base==1)
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ci->pCodecCtx->frame_rate_base=1000;
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/*
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* Allocate a video frame to store the decoded images in.
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*/
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ci->pFrame = avcodec_alloc_frame();
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/*
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* The RGB image pFrameRGB (of type AVFrame *) is allocated like this:
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*/
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// Allocate an AVFrame structure
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ci->pFrameRGB=avcodec_alloc_frame();
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if(ci->pFrameRGB==NULL) {
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av_log(NULL, AV_LOG_DEBUG, "get_watermark_picture() Failed to alloc pFrameRGB\n");
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return -1;
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}
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// Determine required buffer size and allocate buffer
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ci->numBytes = avpicture_get_size(PIX_FMT_RGBA32, ci->pCodecCtx->width,
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ci->pCodecCtx->height);
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ci->buffer = av_malloc(ci->numBytes);
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// Assign appropriate parts of buffer to image planes in pFrameRGB
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avpicture_fill((AVPicture *)ci->pFrameRGB, ci->buffer, PIX_FMT_RGBA32,
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ci->pCodecCtx->width, ci->pCodecCtx->height);
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}
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// TODO loop, pingpong etc?
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if (0 == cleanup)
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{
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// av_log(NULL, AV_LOG_DEBUG, "get_watermark_picture() Get a frame\n");
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while(av_read_frame(ci->pFormatCtx, &ci->packet)>=0)
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{
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// Is this a packet from the video stream?
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if(ci->packet.stream_index == ci->videoStream)
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{
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// Decode video frame
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avcodec_decode_video(ci->pCodecCtx, ci->pFrame, &ci->frameFinished,
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ci->packet.data, ci->packet.size);
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// Did we get a video frame?
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if(ci->frameFinished)
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{
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// Convert the image from its native format to RGBA32
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img_convert((AVPicture *)ci->pFrameRGB, PIX_FMT_RGBA32,
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(AVPicture*)(ci->pFrame), ci->pCodecCtx->pix_fmt, ci->pCodecCtx->width,
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ci->pCodecCtx->height);
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// Process the video frame (save to disk etc.)
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//fprintf(stderr,"banan() New frame!\n");
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//DoSomethingWithTheImage(ci->pFrameRGB);
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return 0;
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}
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}
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// Free the packet that was allocated by av_read_frame
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av_free_packet(&ci->packet);
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}
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ci->is_done = 1;
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return 0;
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} // if 0 != cleanup
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if (0 != cleanup)
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{
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// Free the RGB image
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if (0 != ci->buffer) {
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av_free(ci->buffer);
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ci->buffer = 0;
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}
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if (0 != ci->pFrameRGB) {
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av_free(ci->pFrameRGB);
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ci->pFrameRGB = 0;
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}
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// Close the codec
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if (0 != ci->pCodecCtx) {
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avcodec_close(ci->pCodecCtx);
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ci->pCodecCtx = 0;
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}
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// Close the video file
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if (0 != ci->pFormatCtx) {
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av_close_input_file(ci->pFormatCtx);
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ci->pFormatCtx = 0;
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}
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ci->is_done = 0;
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}
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return 0;
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}
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void parse_arg_file(const char *filename)
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{
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}
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