mirror of https://github.com/FFmpeg/FFmpeg.git
Signed-off-by: Josh de Kock <josh@itanimul.li>pull/231/head
Josh de Kock
8 years ago
parent
9c5fab5ed4
commit
47ea6f5c9d
5 changed files with 2 additions and 411 deletions
@ -1,377 +0,0 @@ |
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/*
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* Copyright (c) 2011 Stefano Sabatini |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg 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 FFmpeg; 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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/**
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* @file |
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* libSDL output device |
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*/ |
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#include <SDL.h> |
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#include <SDL_thread.h> |
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#include "libavutil/avstring.h" |
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#include "libavutil/imgutils.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/parseutils.h" |
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#include "libavutil/pixdesc.h" |
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#include "libavutil/time.h" |
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#include "avdevice.h" |
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typedef struct { |
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AVClass *class; |
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SDL_Surface *surface; |
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SDL_Overlay *overlay; |
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char *window_title; |
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char *icon_title; |
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int window_width, window_height; /**< size of the window */ |
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int window_fullscreen; |
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SDL_Rect overlay_rect; |
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int overlay_fmt; |
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int sdl_was_already_inited; |
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SDL_Thread *event_thread; |
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SDL_mutex *mutex; |
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SDL_cond *init_cond; |
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int init_ret; /* return code used to signal initialization errors */ |
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int inited; |
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int quit; |
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} SDLContext; |
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static const struct sdl_overlay_pix_fmt_entry { |
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enum AVPixelFormat pix_fmt; int overlay_fmt; |
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} sdl_overlay_pix_fmt_map[] = { |
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{ AV_PIX_FMT_YUV420P, SDL_IYUV_OVERLAY }, |
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{ AV_PIX_FMT_YUYV422, SDL_YUY2_OVERLAY }, |
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{ AV_PIX_FMT_UYVY422, SDL_UYVY_OVERLAY }, |
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{ AV_PIX_FMT_NONE, 0 }, |
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}; |
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static int sdl_write_trailer(AVFormatContext *s) |
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{ |
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SDLContext *sdl = s->priv_data; |
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sdl->quit = 1; |
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if (sdl->overlay) |
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SDL_FreeYUVOverlay(sdl->overlay); |
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sdl->overlay = NULL; |
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if (sdl->event_thread) |
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SDL_WaitThread(sdl->event_thread, NULL); |
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sdl->event_thread = NULL; |
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if (sdl->mutex) |
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SDL_DestroyMutex(sdl->mutex); |
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sdl->mutex = NULL; |
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if (sdl->init_cond) |
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SDL_DestroyCond(sdl->init_cond); |
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sdl->init_cond = NULL; |
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if (!sdl->sdl_was_already_inited) |
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SDL_Quit(); |
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return 0; |
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} |
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static void compute_overlay_rect(AVFormatContext *s) |
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{ |
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AVRational sar, dar; /* sample and display aspect ratios */ |
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SDLContext *sdl = s->priv_data; |
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AVStream *st = s->streams[0]; |
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AVCodecParameters *par = st->codecpar; |
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SDL_Rect *overlay_rect = &sdl->overlay_rect; |
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/* compute overlay width and height from the codec context information */ |
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sar = st->sample_aspect_ratio.num ? st->sample_aspect_ratio : (AVRational){ 1, 1 }; |
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dar = av_mul_q(sar, (AVRational){ par->width, par->height }); |
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/* we suppose the screen has a 1/1 sample aspect ratio */ |
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if (sdl->window_width && sdl->window_height) { |
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/* fit in the window */ |
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if (av_cmp_q(dar, (AVRational){ sdl->window_width, sdl->window_height }) > 0) { |
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/* fit in width */ |
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overlay_rect->w = sdl->window_width; |
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overlay_rect->h = av_rescale(overlay_rect->w, dar.den, dar.num); |
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} else { |
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/* fit in height */ |
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overlay_rect->h = sdl->window_height; |
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overlay_rect->w = av_rescale(overlay_rect->h, dar.num, dar.den); |
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} |
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} else { |
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if (sar.num > sar.den) { |
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overlay_rect->w = par->width; |
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overlay_rect->h = av_rescale(overlay_rect->w, dar.den, dar.num); |
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} else { |
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overlay_rect->h = par->height; |
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overlay_rect->w = av_rescale(overlay_rect->h, dar.num, dar.den); |
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} |
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sdl->window_width = overlay_rect->w; |
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sdl->window_height = overlay_rect->h; |
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} |
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overlay_rect->x = (sdl->window_width - overlay_rect->w) / 2; |
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overlay_rect->y = (sdl->window_height - overlay_rect->h) / 2; |
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} |
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#define SDL_BASE_FLAGS (SDL_SWSURFACE|SDL_RESIZABLE) |
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static int event_thread(void *arg) |
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{ |
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AVFormatContext *s = arg; |
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SDLContext *sdl = s->priv_data; |
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int flags = SDL_BASE_FLAGS | (sdl->window_fullscreen ? SDL_FULLSCREEN : 0); |
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AVStream *st = s->streams[0]; |
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AVCodecParameters *par = st->codecpar; |
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/* initialization */ |
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if (SDL_Init(SDL_INIT_VIDEO) != 0) { |
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av_log(s, AV_LOG_ERROR, "Unable to initialize SDL: %s\n", SDL_GetError()); |
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sdl->init_ret = AVERROR(EINVAL); |
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goto init_end; |
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} |
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SDL_WM_SetCaption(sdl->window_title, sdl->icon_title); |
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sdl->surface = SDL_SetVideoMode(sdl->window_width, sdl->window_height, |
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24, flags); |
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if (!sdl->surface) { |
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av_log(sdl, AV_LOG_ERROR, "Unable to set video mode: %s\n", SDL_GetError()); |
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sdl->init_ret = AVERROR(EINVAL); |
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goto init_end; |
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} |
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sdl->overlay = SDL_CreateYUVOverlay(par->width, par->height, |
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sdl->overlay_fmt, sdl->surface); |
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if (!sdl->overlay || sdl->overlay->pitches[0] < par->width) { |
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av_log(s, AV_LOG_ERROR, |
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"SDL does not support an overlay with size of %dx%d pixels\n", |
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par->width, par->height); |
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sdl->init_ret = AVERROR(EINVAL); |
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goto init_end; |
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} |
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sdl->init_ret = 0; |
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av_log(s, AV_LOG_VERBOSE, "w:%d h:%d fmt:%s -> w:%d h:%d\n", |
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par->width, par->height, av_get_pix_fmt_name(par->format), |
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sdl->overlay_rect.w, sdl->overlay_rect.h); |
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init_end: |
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SDL_LockMutex(sdl->mutex); |
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sdl->inited = 1; |
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SDL_UnlockMutex(sdl->mutex); |
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SDL_CondSignal(sdl->init_cond); |
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if (sdl->init_ret < 0) |
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return sdl->init_ret; |
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/* event loop */ |
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while (!sdl->quit) { |
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int ret; |
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SDL_Event event; |
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SDL_PumpEvents(); |
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ret = SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_ALLEVENTS); |
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if (ret < 0) { |
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av_log(s, AV_LOG_ERROR, "Error when getting SDL event: %s\n", SDL_GetError()); |
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continue; |
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} |
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if (ret == 0) { |
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SDL_Delay(10); |
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continue; |
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} |
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switch (event.type) { |
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case SDL_KEYDOWN: |
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switch (event.key.keysym.sym) { |
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case SDLK_ESCAPE: |
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case SDLK_q: |
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sdl->quit = 1; |
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break; |
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} |
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break; |
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case SDL_QUIT: |
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sdl->quit = 1; |
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break; |
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case SDL_VIDEORESIZE: |
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sdl->window_width = event.resize.w; |
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sdl->window_height = event.resize.h; |
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SDL_LockMutex(sdl->mutex); |
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sdl->surface = SDL_SetVideoMode(sdl->window_width, sdl->window_height, 24, SDL_BASE_FLAGS); |
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if (!sdl->surface) { |
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av_log(s, AV_LOG_ERROR, "Failed to set SDL video mode: %s\n", SDL_GetError()); |
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sdl->quit = 1; |
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} else { |
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compute_overlay_rect(s); |
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} |
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SDL_UnlockMutex(sdl->mutex); |
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break; |
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default: |
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break; |
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} |
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} |
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return 0; |
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} |
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static int sdl_write_header(AVFormatContext *s) |
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{ |
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SDLContext *sdl = s->priv_data; |
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AVStream *st = s->streams[0]; |
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AVCodecParameters *par = st->codecpar; |
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int i, ret; |
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if (!sdl->window_title) |
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sdl->window_title = av_strdup(s->filename); |
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if (!sdl->icon_title) |
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sdl->icon_title = av_strdup(sdl->window_title); |
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if (SDL_WasInit(SDL_INIT_VIDEO)) { |
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av_log(s, AV_LOG_ERROR, |
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"SDL video subsystem was already inited, aborting\n"); |
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sdl->sdl_was_already_inited = 1; |
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ret = AVERROR(EINVAL); |
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goto fail; |
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} |
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if ( s->nb_streams > 1 |
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|| par->codec_type != AVMEDIA_TYPE_VIDEO |
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|| par->codec_id != AV_CODEC_ID_RAWVIDEO) { |
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av_log(s, AV_LOG_ERROR, "Only supports one rawvideo stream\n"); |
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ret = AVERROR(EINVAL); |
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goto fail; |
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} |
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for (i = 0; sdl_overlay_pix_fmt_map[i].pix_fmt != AV_PIX_FMT_NONE; i++) { |
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if (sdl_overlay_pix_fmt_map[i].pix_fmt == par->format) { |
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sdl->overlay_fmt = sdl_overlay_pix_fmt_map[i].overlay_fmt; |
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break; |
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} |
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} |
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if (!sdl->overlay_fmt) { |
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av_log(s, AV_LOG_ERROR, |
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"Unsupported pixel format '%s', choose one of yuv420p, yuyv422, or uyvy422\n", |
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av_get_pix_fmt_name(par->format)); |
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ret = AVERROR(EINVAL); |
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goto fail; |
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} |
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/* compute overlay width and height from the codec context information */ |
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compute_overlay_rect(s); |
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sdl->init_cond = SDL_CreateCond(); |
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if (!sdl->init_cond) { |
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av_log(s, AV_LOG_ERROR, "Could not create SDL condition variable: %s\n", SDL_GetError()); |
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ret = AVERROR_EXTERNAL; |
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goto fail; |
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} |
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sdl->mutex = SDL_CreateMutex(); |
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if (!sdl->mutex) { |
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av_log(s, AV_LOG_ERROR, "Could not create SDL mutex: %s\n", SDL_GetError()); |
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ret = AVERROR_EXTERNAL; |
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goto fail; |
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} |
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sdl->event_thread = SDL_CreateThread(event_thread, s); |
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if (!sdl->event_thread) { |
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av_log(s, AV_LOG_ERROR, "Could not create SDL event thread: %s\n", SDL_GetError()); |
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ret = AVERROR_EXTERNAL; |
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goto fail; |
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} |
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/* wait until the video system has been inited */ |
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SDL_LockMutex(sdl->mutex); |
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while (!sdl->inited) { |
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SDL_CondWait(sdl->init_cond, sdl->mutex); |
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} |
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SDL_UnlockMutex(sdl->mutex); |
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if (sdl->init_ret < 0) { |
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ret = sdl->init_ret; |
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goto fail; |
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} |
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return 0; |
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fail: |
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sdl_write_trailer(s); |
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return ret; |
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} |
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static int sdl_write_packet(AVFormatContext *s, AVPacket *pkt) |
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{ |
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SDLContext *sdl = s->priv_data; |
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AVCodecParameters *par = s->streams[0]->codecpar; |
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uint8_t *data[4]; |
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int linesize[4]; |
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int i; |
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if (sdl->quit) { |
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sdl_write_trailer(s); |
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return AVERROR(EIO); |
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} |
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av_image_fill_arrays(data, linesize, pkt->data, par->format, par->width, par->height, 1); |
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SDL_LockMutex(sdl->mutex); |
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SDL_FillRect(sdl->surface, &sdl->surface->clip_rect, |
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SDL_MapRGB(sdl->surface->format, 0, 0, 0)); |
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SDL_LockYUVOverlay(sdl->overlay); |
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for (i = 0; i < 3; i++) { |
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sdl->overlay->pixels [i] = data [i]; |
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sdl->overlay->pitches[i] = linesize[i]; |
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} |
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SDL_DisplayYUVOverlay(sdl->overlay, &sdl->overlay_rect); |
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SDL_UnlockYUVOverlay(sdl->overlay); |
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SDL_UpdateRect(sdl->surface, |
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sdl->overlay_rect.x, sdl->overlay_rect.y, |
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sdl->overlay_rect.w, sdl->overlay_rect.h); |
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SDL_UnlockMutex(sdl->mutex); |
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return 0; |
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} |
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#define OFFSET(x) offsetof(SDLContext,x) |
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static const AVOption options[] = { |
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{ "window_title", "set SDL window title", OFFSET(window_title), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM }, |
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{ "icon_title", "set SDL iconified window title", OFFSET(icon_title) , AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM }, |
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{ "window_size", "set SDL window forced size", OFFSET(window_width), AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM }, |
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{ "window_fullscreen", "set SDL window fullscreen", OFFSET(window_fullscreen), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
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{ NULL }, |
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}; |
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static const AVClass sdl_class = { |
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.class_name = "sdl outdev", |
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.item_name = av_default_item_name, |
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.option = options, |
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.version = LIBAVUTIL_VERSION_INT, |
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.category = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT, |
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}; |
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AVOutputFormat ff_sdl_muxer = { |
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.name = "sdl", |
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.long_name = NULL_IF_CONFIG_SMALL("SDL output device"), |
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.priv_data_size = sizeof(SDLContext), |
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.audio_codec = AV_CODEC_ID_NONE, |
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.video_codec = AV_CODEC_ID_RAWVIDEO, |
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.write_header = sdl_write_header, |
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.write_packet = sdl_write_packet, |
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.write_trailer = sdl_write_trailer, |
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.flags = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS, |
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.priv_class = &sdl_class, |
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}; |
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