mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
6f69f7a8bf
* commit '9200514ad8717c63f82101dc394f4378854325bf': lavf: replace AVStream.codec with AVStream.codecpar This has been a HUGE effort from: - Derek Buitenhuis <derek.buitenhuis@gmail.com> - Hendrik Leppkes <h.leppkes@gmail.com> - wm4 <nfxjfg@googlemail.com> - Clément Bœsch <clement@stupeflix.com> - James Almer <jamrial@gmail.com> - Michael Niedermayer <michael@niedermayer.cc> - Rostislav Pehlivanov <atomnuker@gmail.com> Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
378 lines
12 KiB
C
378 lines
12 KiB
C
/*
|
|
* Copyright (c) 2011 Stefano Sabatini
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* libSDL output device
|
|
*/
|
|
|
|
#include <SDL.h>
|
|
#include <SDL_thread.h>
|
|
|
|
#include "libavutil/avstring.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/parseutils.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "libavutil/time.h"
|
|
#include "avdevice.h"
|
|
|
|
typedef struct {
|
|
AVClass *class;
|
|
SDL_Surface *surface;
|
|
SDL_Overlay *overlay;
|
|
char *window_title;
|
|
char *icon_title;
|
|
int window_width, window_height; /**< size of the window */
|
|
int window_fullscreen;
|
|
|
|
SDL_Rect overlay_rect;
|
|
int overlay_fmt;
|
|
|
|
int sdl_was_already_inited;
|
|
SDL_Thread *event_thread;
|
|
SDL_mutex *mutex;
|
|
SDL_cond *init_cond;
|
|
int init_ret; /* return code used to signal initialization errors */
|
|
int inited;
|
|
int quit;
|
|
} SDLContext;
|
|
|
|
static const struct sdl_overlay_pix_fmt_entry {
|
|
enum AVPixelFormat pix_fmt; int overlay_fmt;
|
|
} sdl_overlay_pix_fmt_map[] = {
|
|
{ AV_PIX_FMT_YUV420P, SDL_IYUV_OVERLAY },
|
|
{ AV_PIX_FMT_YUYV422, SDL_YUY2_OVERLAY },
|
|
{ AV_PIX_FMT_UYVY422, SDL_UYVY_OVERLAY },
|
|
{ AV_PIX_FMT_NONE, 0 },
|
|
};
|
|
|
|
static int sdl_write_trailer(AVFormatContext *s)
|
|
{
|
|
SDLContext *sdl = s->priv_data;
|
|
|
|
sdl->quit = 1;
|
|
|
|
if (sdl->overlay)
|
|
SDL_FreeYUVOverlay(sdl->overlay);
|
|
sdl->overlay = NULL;
|
|
if (sdl->event_thread)
|
|
SDL_WaitThread(sdl->event_thread, NULL);
|
|
sdl->event_thread = NULL;
|
|
if (sdl->mutex)
|
|
SDL_DestroyMutex(sdl->mutex);
|
|
sdl->mutex = NULL;
|
|
if (sdl->init_cond)
|
|
SDL_DestroyCond(sdl->init_cond);
|
|
sdl->init_cond = NULL;
|
|
|
|
if (!sdl->sdl_was_already_inited)
|
|
SDL_Quit();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void compute_overlay_rect(AVFormatContext *s)
|
|
{
|
|
AVRational sar, dar; /* sample and display aspect ratios */
|
|
SDLContext *sdl = s->priv_data;
|
|
AVStream *st = s->streams[0];
|
|
AVCodecParameters *par = st->codecpar;
|
|
SDL_Rect *overlay_rect = &sdl->overlay_rect;
|
|
|
|
/* compute overlay width and height from the codec context information */
|
|
sar = st->sample_aspect_ratio.num ? st->sample_aspect_ratio : (AVRational){ 1, 1 };
|
|
dar = av_mul_q(sar, (AVRational){ par->width, par->height });
|
|
|
|
/* we suppose the screen has a 1/1 sample aspect ratio */
|
|
if (sdl->window_width && sdl->window_height) {
|
|
/* fit in the window */
|
|
if (av_cmp_q(dar, (AVRational){ sdl->window_width, sdl->window_height }) > 0) {
|
|
/* fit in width */
|
|
overlay_rect->w = sdl->window_width;
|
|
overlay_rect->h = av_rescale(overlay_rect->w, dar.den, dar.num);
|
|
} else {
|
|
/* fit in height */
|
|
overlay_rect->h = sdl->window_height;
|
|
overlay_rect->w = av_rescale(overlay_rect->h, dar.num, dar.den);
|
|
}
|
|
} else {
|
|
if (sar.num > sar.den) {
|
|
overlay_rect->w = par->width;
|
|
overlay_rect->h = av_rescale(overlay_rect->w, dar.den, dar.num);
|
|
} else {
|
|
overlay_rect->h = par->height;
|
|
overlay_rect->w = av_rescale(overlay_rect->h, dar.num, dar.den);
|
|
}
|
|
sdl->window_width = overlay_rect->w;
|
|
sdl->window_height = overlay_rect->h;
|
|
}
|
|
|
|
overlay_rect->x = (sdl->window_width - overlay_rect->w) / 2;
|
|
overlay_rect->y = (sdl->window_height - overlay_rect->h) / 2;
|
|
}
|
|
|
|
#define SDL_BASE_FLAGS (SDL_SWSURFACE|SDL_RESIZABLE)
|
|
|
|
static int event_thread(void *arg)
|
|
{
|
|
AVFormatContext *s = arg;
|
|
SDLContext *sdl = s->priv_data;
|
|
int flags = SDL_BASE_FLAGS | (sdl->window_fullscreen ? SDL_FULLSCREEN : 0);
|
|
AVStream *st = s->streams[0];
|
|
AVCodecParameters *par = st->codecpar;
|
|
|
|
/* initialization */
|
|
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
|
|
av_log(s, AV_LOG_ERROR, "Unable to initialize SDL: %s\n", SDL_GetError());
|
|
sdl->init_ret = AVERROR(EINVAL);
|
|
goto init_end;
|
|
}
|
|
|
|
SDL_WM_SetCaption(sdl->window_title, sdl->icon_title);
|
|
sdl->surface = SDL_SetVideoMode(sdl->window_width, sdl->window_height,
|
|
24, flags);
|
|
if (!sdl->surface) {
|
|
av_log(sdl, AV_LOG_ERROR, "Unable to set video mode: %s\n", SDL_GetError());
|
|
sdl->init_ret = AVERROR(EINVAL);
|
|
goto init_end;
|
|
}
|
|
|
|
sdl->overlay = SDL_CreateYUVOverlay(par->width, par->height,
|
|
sdl->overlay_fmt, sdl->surface);
|
|
if (!sdl->overlay || sdl->overlay->pitches[0] < par->width) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"SDL does not support an overlay with size of %dx%d pixels\n",
|
|
par->width, par->height);
|
|
sdl->init_ret = AVERROR(EINVAL);
|
|
goto init_end;
|
|
}
|
|
|
|
sdl->init_ret = 0;
|
|
av_log(s, AV_LOG_VERBOSE, "w:%d h:%d fmt:%s -> w:%d h:%d\n",
|
|
par->width, par->height, av_get_pix_fmt_name(par->format),
|
|
sdl->overlay_rect.w, sdl->overlay_rect.h);
|
|
|
|
init_end:
|
|
SDL_LockMutex(sdl->mutex);
|
|
sdl->inited = 1;
|
|
SDL_UnlockMutex(sdl->mutex);
|
|
SDL_CondSignal(sdl->init_cond);
|
|
|
|
if (sdl->init_ret < 0)
|
|
return sdl->init_ret;
|
|
|
|
/* event loop */
|
|
while (!sdl->quit) {
|
|
int ret;
|
|
SDL_Event event;
|
|
SDL_PumpEvents();
|
|
ret = SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_ALLEVENTS);
|
|
if (ret < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Error when getting SDL event: %s\n", SDL_GetError());
|
|
continue;
|
|
}
|
|
if (ret == 0) {
|
|
SDL_Delay(10);
|
|
continue;
|
|
}
|
|
|
|
switch (event.type) {
|
|
case SDL_KEYDOWN:
|
|
switch (event.key.keysym.sym) {
|
|
case SDLK_ESCAPE:
|
|
case SDLK_q:
|
|
sdl->quit = 1;
|
|
break;
|
|
}
|
|
break;
|
|
case SDL_QUIT:
|
|
sdl->quit = 1;
|
|
break;
|
|
|
|
case SDL_VIDEORESIZE:
|
|
sdl->window_width = event.resize.w;
|
|
sdl->window_height = event.resize.h;
|
|
|
|
SDL_LockMutex(sdl->mutex);
|
|
sdl->surface = SDL_SetVideoMode(sdl->window_width, sdl->window_height, 24, SDL_BASE_FLAGS);
|
|
if (!sdl->surface) {
|
|
av_log(s, AV_LOG_ERROR, "Failed to set SDL video mode: %s\n", SDL_GetError());
|
|
sdl->quit = 1;
|
|
} else {
|
|
compute_overlay_rect(s);
|
|
}
|
|
SDL_UnlockMutex(sdl->mutex);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sdl_write_header(AVFormatContext *s)
|
|
{
|
|
SDLContext *sdl = s->priv_data;
|
|
AVStream *st = s->streams[0];
|
|
AVCodecParameters *par = st->codecpar;
|
|
int i, ret;
|
|
|
|
if (!sdl->window_title)
|
|
sdl->window_title = av_strdup(s->filename);
|
|
if (!sdl->icon_title)
|
|
sdl->icon_title = av_strdup(sdl->window_title);
|
|
|
|
if (SDL_WasInit(SDL_INIT_VIDEO)) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"SDL video subsystem was already inited, aborting\n");
|
|
sdl->sdl_was_already_inited = 1;
|
|
ret = AVERROR(EINVAL);
|
|
goto fail;
|
|
}
|
|
|
|
if ( s->nb_streams > 1
|
|
|| par->codec_type != AVMEDIA_TYPE_VIDEO
|
|
|| par->codec_id != AV_CODEC_ID_RAWVIDEO) {
|
|
av_log(s, AV_LOG_ERROR, "Only supports one rawvideo stream\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto fail;
|
|
}
|
|
|
|
for (i = 0; sdl_overlay_pix_fmt_map[i].pix_fmt != AV_PIX_FMT_NONE; i++) {
|
|
if (sdl_overlay_pix_fmt_map[i].pix_fmt == par->format) {
|
|
sdl->overlay_fmt = sdl_overlay_pix_fmt_map[i].overlay_fmt;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!sdl->overlay_fmt) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"Unsupported pixel format '%s', choose one of yuv420p, yuyv422, or uyvy422\n",
|
|
av_get_pix_fmt_name(par->format));
|
|
ret = AVERROR(EINVAL);
|
|
goto fail;
|
|
}
|
|
|
|
/* compute overlay width and height from the codec context information */
|
|
compute_overlay_rect(s);
|
|
|
|
sdl->init_cond = SDL_CreateCond();
|
|
if (!sdl->init_cond) {
|
|
av_log(s, AV_LOG_ERROR, "Could not create SDL condition variable: %s\n", SDL_GetError());
|
|
ret = AVERROR_EXTERNAL;
|
|
goto fail;
|
|
}
|
|
sdl->mutex = SDL_CreateMutex();
|
|
if (!sdl->mutex) {
|
|
av_log(s, AV_LOG_ERROR, "Could not create SDL mutex: %s\n", SDL_GetError());
|
|
ret = AVERROR_EXTERNAL;
|
|
goto fail;
|
|
}
|
|
sdl->event_thread = SDL_CreateThread(event_thread, s);
|
|
if (!sdl->event_thread) {
|
|
av_log(s, AV_LOG_ERROR, "Could not create SDL event thread: %s\n", SDL_GetError());
|
|
ret = AVERROR_EXTERNAL;
|
|
goto fail;
|
|
}
|
|
|
|
/* wait until the video system has been inited */
|
|
SDL_LockMutex(sdl->mutex);
|
|
while (!sdl->inited) {
|
|
SDL_CondWait(sdl->init_cond, sdl->mutex);
|
|
}
|
|
SDL_UnlockMutex(sdl->mutex);
|
|
if (sdl->init_ret < 0) {
|
|
ret = sdl->init_ret;
|
|
goto fail;
|
|
}
|
|
return 0;
|
|
|
|
fail:
|
|
sdl_write_trailer(s);
|
|
return ret;
|
|
}
|
|
|
|
static int sdl_write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
SDLContext *sdl = s->priv_data;
|
|
AVCodecParameters *par = s->streams[0]->codecpar;
|
|
uint8_t *data[4];
|
|
int linesize[4];
|
|
int i;
|
|
|
|
if (sdl->quit) {
|
|
sdl_write_trailer(s);
|
|
return AVERROR(EIO);
|
|
}
|
|
av_image_fill_arrays(data, linesize, pkt->data, par->format, par->width, par->height, 1);
|
|
|
|
SDL_LockMutex(sdl->mutex);
|
|
SDL_FillRect(sdl->surface, &sdl->surface->clip_rect,
|
|
SDL_MapRGB(sdl->surface->format, 0, 0, 0));
|
|
SDL_LockYUVOverlay(sdl->overlay);
|
|
for (i = 0; i < 3; i++) {
|
|
sdl->overlay->pixels [i] = data [i];
|
|
sdl->overlay->pitches[i] = linesize[i];
|
|
}
|
|
SDL_DisplayYUVOverlay(sdl->overlay, &sdl->overlay_rect);
|
|
SDL_UnlockYUVOverlay(sdl->overlay);
|
|
|
|
SDL_UpdateRect(sdl->surface,
|
|
sdl->overlay_rect.x, sdl->overlay_rect.y,
|
|
sdl->overlay_rect.w, sdl->overlay_rect.h);
|
|
SDL_UnlockMutex(sdl->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(SDLContext,x)
|
|
|
|
static const AVOption options[] = {
|
|
{ "window_title", "set SDL window title", OFFSET(window_title), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
|
|
{ "icon_title", "set SDL iconified window title", OFFSET(icon_title) , AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
|
|
{ "window_size", "set SDL window forced size", OFFSET(window_width), AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
|
|
{ "window_fullscreen", "set SDL window fullscreen", OFFSET(window_fullscreen), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass sdl_class = {
|
|
.class_name = "sdl outdev",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
.category = AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT,
|
|
};
|
|
|
|
AVOutputFormat ff_sdl_muxer = {
|
|
.name = "sdl",
|
|
.long_name = NULL_IF_CONFIG_SMALL("SDL output device"),
|
|
.priv_data_size = sizeof(SDLContext),
|
|
.audio_codec = AV_CODEC_ID_NONE,
|
|
.video_codec = AV_CODEC_ID_RAWVIDEO,
|
|
.write_header = sdl_write_header,
|
|
.write_packet = sdl_write_packet,
|
|
.write_trailer = sdl_write_trailer,
|
|
.flags = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,
|
|
.priv_class = &sdl_class,
|
|
};
|