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ffmpeg.wasm-core
Commit 2d7490fc authored by Víctor Paesa's avatar Víctor Paesa Committed by Guillaume Poirier
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port watermark vhook to swscaler 

Patch by Victor Paesa %wzrlpy A arsystel P com%
Original thread + testcase:
Date: Sep 12, 2006 5:29 PM
Subject: Re: [Ffmpeg-devel] [PATCH] enable libswscale

Originally committed as revision 6649 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 67d0436c
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Inline Side-by-side
Showing with 91 additions and 17 deletions
vhook/watermark.c
View file @ 2d7490fc
......@@ -63,6 +63,9 @@
#include "framehook.h"
#include "cmdutils.h"
#include "swscale.h"
static int sws_flags = SWS_BICUBIC;
typedef struct {
char filename[2000];
......@@ -89,6 +92,13 @@ typedef struct {
int thrG;
int thrB;
int mode;
// This vhook first converts frame to RGB ...
struct SwsContext *toRGB_convert_ctx;
// ... then converts a watermark and applies it to the RGB frame ...
struct SwsContext *watermark_convert_ctx;
// ... and finally converts back frame from RGB to initial format
struct SwsContext *fromRGB_convert_ctx;
} ContextInfo;
int get_watermark_picture(ContextInfo *ci, int cleanup);
......@@ -102,8 +112,12 @@ void Release(void *ctx)
ContextInfo *ci;
ci = (ContextInfo *) ctx;
if (ci) get_watermark_picture(ci, 1);
if (ci) {
get_watermark_picture(ci, 1);
sws_freeContext(ci->toRGB_convert_ctx);
sws_freeContext(ci->watermark_convert_ctx);
sws_freeContext(ci->fromRGB_convert_ctx);
}
av_free(ctx);
}
......@@ -201,11 +215,24 @@ static void Process0(void *ctx,
buf = av_malloc(size);
avpicture_fill(&picture1, buf, PIX_FMT_RGBA32, src_width, src_height);
if (img_convert(&picture1, PIX_FMT_RGBA32,
picture, pix_fmt, src_width, src_height) < 0) {
av_free(buf);
return;
// 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,
src_width, src_height, pix_fmt,
src_width, src_height, PIX_FMT_RGBA32,
sws_flags, NULL, NULL, NULL);
if (ci->toRGB_convert_ctx == NULL) {
av_log(NULL, AV_LOG_ERROR,
"Cannot initialize the toRGB conversion context\n");
exit(1);
}
// 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, src_height,
picture1.data, picture1.linesize);
pict = &picture1;
}
......@@ -265,9 +292,20 @@ static void Process0(void *ctx,
if (pix_fmt != PIX_FMT_RGBA32) {
if (img_convert(picture, pix_fmt,
&picture1, PIX_FMT_RGBA32, src_width, src_height) < 0) {
ci->fromRGB_convert_ctx = sws_getCachedContext(ci->fromRGB_convert_ctx,
src_width, src_height, PIX_FMT_RGBA32,
src_width, src_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");
exit(1);
}
// 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,
picture1.data, picture1.linesize, 0, src_height,
picture->data, picture->linesize);
}
av_free(buf);
......@@ -308,11 +346,24 @@ static void Process1(void *ctx,
buf = av_malloc(size);
avpicture_fill(&picture1, buf, PIX_FMT_RGBA32, src_width, src_height);
if (img_convert(&picture1, PIX_FMT_RGBA32,
picture, pix_fmt, src_width, src_height) < 0) {
av_free(buf);
return;
// 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,
src_width, src_height, pix_fmt,
src_width, src_height, PIX_FMT_RGBA32,
sws_flags, NULL, NULL, NULL);
if (ci->toRGB_convert_ctx == NULL) {
av_log(NULL, AV_LOG_ERROR,
"Cannot initialize the toRGB conversion context\n");
exit(1);
}
// 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, src_height,
picture1.data, picture1.linesize);
pict = &picture1;
}
......@@ -352,9 +403,20 @@ static void Process1(void *ctx,
} // foreach Y
if (pix_fmt != PIX_FMT_RGBA32) {
if (img_convert(picture, pix_fmt,
&picture1, PIX_FMT_RGBA32, src_width, src_height) < 0) {
ci->fromRGB_convert_ctx = sws_getCachedContext(ci->fromRGB_convert_ctx,
src_width, src_height, PIX_FMT_RGBA32,
src_width, src_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");
exit(1);
}
// 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,
picture1.data, picture1.linesize, 0, src_height,
picture->data, picture->linesize);
}
av_free(buf);
......@@ -540,9 +602,21 @@ int get_watermark_picture(ContextInfo *ci, int cleanup)
if(ci->frameFinished)
{
// Convert the image from its native format to RGBA32
img_convert((AVPicture *)ci->pFrameRGB, PIX_FMT_RGBA32,
(AVPicture*)(ci->pFrame), ci->pCodecCtx->pix_fmt, ci->pCodecCtx->width,
ci->pCodecCtx->height);
ci->watermark_convert_ctx =
sws_getCachedContext(ci->watermark_convert_ctx,
ci->pCodecCtx->width, ci->pCodecCtx->height, ci->pCodecCtx->pix_fmt,
ci->pCodecCtx->width, ci->pCodecCtx->height, PIX_FMT_RGBA32,
sws_flags, NULL, NULL, NULL);
if (ci->watermark_convert_ctx == NULL) {
av_log(NULL, AV_LOG_ERROR,
"Cannot initialize the watermark conversion context\n");
exit(1);
}
// img_convert parameters are 2 first destination, then 4 source
// sws_scale parameters are context, 4 first source, then 2 destination
sws_scale(ci->watermark_convert_ctx,
ci->pFrame->data, ci->pFrame->linesize, 0, ci->pCodecCtx->height,
ci->pFrameRGB->data, ci->pFrameRGB->linesize);
// Process the video frame (save to disk etc.)
//fprintf(stderr,"banan() New frame!\n");
......
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