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ffmpeg/ffplay.c
Michael Niedermayer 0c904df2b6 dont let the demuxer thread die before the video has actually been played as seeking would become impossible shortly before EOF 
Originally committed as revision 2705 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-01-14 20:22:11 +00:00

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/*
* FFplay : Simple Media Player based on the ffmpeg libraries
* Copyright (c) 2003 Fabrice Bellard
*
* 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
*/
#define HAVE_AV_CONFIG_H
#include "avformat.h"
#include "cmdutils.h"
#include <SDL.h>
#include <SDL_thread.h>
#ifdef CONFIG_WIN32
#undef main /* We don't want SDL to override our main() */
#endif
#if defined(__linux__)
#define HAVE_X11
#endif
#ifdef HAVE_X11
#include <X11/Xlib.h>
#endif
//#define DEBUG_SYNC
#define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
#define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
/* SDL audio buffer size, in samples. Should be small to have precise
A/V sync as SDL does not have hardware buffer fullness info. */
#define SDL_AUDIO_BUFFER_SIZE 1024
/* no AV sync correction is done if below the AV sync threshold */
#define AV_SYNC_THRESHOLD 0.08
/* no AV correction is done if too big error */
#define AV_NOSYNC_THRESHOLD 10.0
/* maximum audio speed change to get correct sync */
#define SAMPLE_CORRECTION_PERCENT_MAX 10
/* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
#define AUDIO_DIFF_AVG_NB 20
/* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
#define SAMPLE_ARRAY_SIZE (2*65536)
typedef struct PacketQueue {
AVPacketList *first_pkt, *last_pkt;
int nb_packets;
int size;
int abort_request;
SDL_mutex *mutex;
SDL_cond *cond;
} PacketQueue;
#define VIDEO_PICTURE_QUEUE_SIZE 1
typedef struct VideoPicture {
double pts; /* presentation time stamp for this picture */
SDL_Overlay *bmp;
int width, height; /* source height & width */
int allocated;
} VideoPicture;
enum {
AV_SYNC_AUDIO_MASTER, /* default choice */
AV_SYNC_VIDEO_MASTER,
AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
};
typedef struct VideoState {
SDL_Thread *parse_tid;
SDL_Thread *video_tid;
AVInputFormat *iformat;
int no_background;
int abort_request;
int paused;
int last_paused;
int seek_req;
int64_t seek_pos;
AVFormatContext *ic;
int dtg_active_format;
int audio_stream;
int av_sync_type;
double external_clock; /* external clock base */
int64_t external_clock_time;
double audio_clock;
double audio_diff_cum; /* used for AV difference average computation */
double audio_diff_avg_coef;
double audio_diff_threshold;
int audio_diff_avg_count;
AVStream *audio_st;
PacketQueue audioq;
int audio_hw_buf_size;
/* samples output by the codec. we reserve more space for avsync
compensation */
uint8_t audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
int audio_buf_size; /* in bytes */
int audio_buf_index; /* in bytes */
AVPacket audio_pkt;
uint8_t *audio_pkt_data;
int audio_pkt_size;
int show_audio; /* if true, display audio samples */
int16_t sample_array[SAMPLE_ARRAY_SIZE];
int sample_array_index;
int last_i_start;
double frame_timer;
double frame_last_pts;
double frame_last_delay;
double video_clock;
int video_stream;
AVStream *video_st;
PacketQueue videoq;
double video_last_P_pts; /* pts of the last P picture (needed if B
frames are present) */
double video_current_pts; /* current displayed pts (different from
video_clock if frame fifos are used) */
int64_t video_current_pts_time; /* time at which we updated
video_current_pts - used to
have running video pts */
VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
int pictq_size, pictq_rindex, pictq_windex;
SDL_mutex *pictq_mutex;
SDL_cond *pictq_cond;
// QETimer *video_timer;
char filename[1024];
int width, height, xleft, ytop;
} VideoState;
void show_help(void);
static int audio_write_get_buf_size(VideoState *is);
/* options specified by the user */
static AVInputFormat *file_iformat;
static AVImageFormat *image_format;
static const char *input_filename;
static int fs_screen_width;
static int fs_screen_height;
static int screen_width = 640;
static int screen_height = 480;
static int audio_disable;
static int video_disable;
static int display_disable;
static int show_status;
static int av_sync_type = AV_SYNC_AUDIO_MASTER;
static int64_t start_time = AV_NOPTS_VALUE;
static int debug = 0;
static int debug_mv = 0;
static int step = 0;
/* current context */
static int is_full_screen;
static VideoState *cur_stream;
static int64_t audio_callback_time;
#define FF_ALLOC_EVENT (SDL_USEREVENT)
#define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
#define FF_QUIT_EVENT (SDL_USEREVENT + 2)
SDL_Surface *screen;
/* packet queue handling */
static void packet_queue_init(PacketQueue *q)
{
memset(q, 0, sizeof(PacketQueue));
q->mutex = SDL_CreateMutex();
q->cond = SDL_CreateCond();
}
static void packet_queue_flush(PacketQueue *q)
{
AVPacketList *pkt, *pkt1;
for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
pkt1 = pkt->next;
av_free_packet(&pkt->pkt);
}
q->last_pkt = NULL;
q->first_pkt = NULL;
q->nb_packets = 0;
q->size = 0;
}
static void packet_queue_end(PacketQueue *q)
{
packet_queue_flush(q);
SDL_DestroyMutex(q->mutex);
SDL_DestroyCond(q->cond);
}
static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
{
AVPacketList *pkt1;
/* duplicate the packet */
if (av_dup_packet(pkt) < 0)
return -1;
pkt1 = av_malloc(sizeof(AVPacketList));
if (!pkt1)
return -1;
pkt1->pkt = *pkt;
pkt1->next = NULL;
SDL_LockMutex(q->mutex);
if (!q->last_pkt)
q->first_pkt = pkt1;
else
q->last_pkt->next = pkt1;
q->last_pkt = pkt1;
q->nb_packets++;
q->size += pkt1->pkt.size;
/* XXX: should duplicate packet data in DV case */
SDL_CondSignal(q->cond);
SDL_UnlockMutex(q->mutex);
return 0;
}
static void packet_queue_abort(PacketQueue *q)
{
SDL_LockMutex(q->mutex);
q->abort_request = 1;
SDL_CondSignal(q->cond);
SDL_UnlockMutex(q->mutex);
}
/* return < 0 if aborted, 0 if no packet and > 0 if packet. */
static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
{
AVPacketList *pkt1;
int ret;
SDL_LockMutex(q->mutex);
for(;;) {
if (q->abort_request) {
ret = -1;
break;
}
pkt1 = q->first_pkt;
if (pkt1) {
q->first_pkt = pkt1->next;
if (!q->first_pkt)
q->last_pkt = NULL;
q->nb_packets--;
q->size -= pkt1->pkt.size;
*pkt = pkt1->pkt;
av_free(pkt1);
ret = 1;
break;
} else if (!block) {
ret = 0;
break;
} else {
SDL_CondWait(q->cond, q->mutex);
}
}
SDL_UnlockMutex(q->mutex);
return ret;
}
static inline void fill_rectangle(SDL_Surface *screen,
int x, int y, int w, int h, int color)
{
SDL_Rect rect;
rect.x = x;
rect.y = y;
rect.w = w;
rect.h = h;
SDL_FillRect(screen, &rect, color);
}
#if 0
/* draw only the border of a rectangle */
void fill_border(VideoState *s, int x, int y, int w, int h, int color)
{
int w1, w2, h1, h2;
/* fill the background */
w1 = x;
if (w1 < 0)
w1 = 0;
w2 = s->width - (x + w);
if (w2 < 0)
w2 = 0;
h1 = y;
if (h1 < 0)
h1 = 0;
h2 = s->height - (y + h);
if (h2 < 0)
h2 = 0;
fill_rectangle(screen,
s->xleft, s->ytop,
w1, s->height,
color);
fill_rectangle(screen,
s->xleft + s->width - w2, s->ytop,
w2, s->height,
color);
fill_rectangle(screen,
s->xleft + w1, s->ytop,
s->width - w1 - w2, h1,
color);
fill_rectangle(screen,
s->xleft + w1, s->ytop + s->height - h2,
s->width - w1 - w2, h2,
color);
}
#endif
static void video_image_display(VideoState *is)
{
VideoPicture *vp;
float aspect_ratio;
int width, height, x, y;
SDL_Rect rect;
vp = &is->pictq[is->pictq_rindex];
if (vp->bmp) {
/* XXX: use variable in the frame */
if (is->video_st->codec.sample_aspect_ratio.num == 0)
aspect_ratio = 0;
else
aspect_ratio = av_q2d(is->video_st->codec.sample_aspect_ratio)
* is->video_st->codec.width / is->video_st->codec.height;;
if (aspect_ratio <= 0.0)
aspect_ratio = (float)is->video_st->codec.width /
(float)is->video_st->codec.height;
/* if an active format is indicated, then it overrides the
mpeg format */
#if 0
if (is->video_st->codec.dtg_active_format != is->dtg_active_format) {
is->dtg_active_format = is->video_st->codec.dtg_active_format;
printf("dtg_active_format=%d\n", is->dtg_active_format);
}
#endif
#if 0
switch(is->video_st->codec.dtg_active_format) {
case FF_DTG_AFD_SAME:
default:
/* nothing to do */
break;
case FF_DTG_AFD_4_3:
aspect_ratio = 4.0 / 3.0;
break;
case FF_DTG_AFD_16_9:
aspect_ratio = 16.0 / 9.0;
break;
case FF_DTG_AFD_14_9:
aspect_ratio = 14.0 / 9.0;
break;
case FF_DTG_AFD_4_3_SP_14_9:
aspect_ratio = 14.0 / 9.0;
break;
case FF_DTG_AFD_16_9_SP_14_9:
aspect_ratio = 14.0 / 9.0;
break;
case FF_DTG_AFD_SP_4_3:
aspect_ratio = 4.0 / 3.0;
break;
}
#endif
/* XXX: we suppose the screen has a 1.0 pixel ratio */
height = is->height;
width = ((int)rint(height * aspect_ratio)) & -3;
if (width > is->width) {
width = is->width;
height = ((int)rint(width / aspect_ratio)) & -3;
}
x = (is->width - width) / 2;
y = (is->height - height) / 2;
if (!is->no_background) {
/* fill the background */
// fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
} else {
is->no_background = 0;
}
rect.x = is->xleft + x;
rect.y = is->xleft + y;
rect.w = width;
rect.h = height;
SDL_DisplayYUVOverlay(vp->bmp, &rect);
} else {
#if 0
fill_rectangle(screen,
is->xleft, is->ytop, is->width, is->height,
QERGB(0x00, 0x00, 0x00));
#endif
}
}
static inline int compute_mod(int a, int b)
{
a = a % b;
if (a >= 0)
return a;
else
return a + b;
}
static void video_audio_display(VideoState *s)
{
int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
int ch, channels, h, h2, bgcolor, fgcolor;
int16_t time_diff;
/* compute display index : center on currently output samples */
channels = s->audio_st->codec.channels;
nb_display_channels = channels;
if (!s->paused) {
n = 2 * channels;
delay = audio_write_get_buf_size(s);
delay /= n;
/* to be more precise, we take into account the time spent since
the last buffer computation */
if (audio_callback_time) {
time_diff = av_gettime() - audio_callback_time;
delay += (time_diff * s->audio_st->codec.sample_rate) / 1000000;
}
delay -= s->width / 2;
if (delay < s->width)
delay = s->width;
i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
s->last_i_start = i_start;
} else {
i_start = s->last_i_start;
}
bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
fill_rectangle(screen,
s->xleft, s->ytop, s->width, s->height,
bgcolor);
fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
/* total height for one channel */
h = s->height / nb_display_channels;
/* graph height / 2 */
h2 = (h * 9) / 20;
for(ch = 0;ch < nb_display_channels; ch++) {
i = i_start + ch;
y1 = s->ytop + ch * h + (h / 2); /* position of center line */
for(x = 0; x < s->width; x++) {
y = (s->sample_array[i] * h2) >> 15;
if (y < 0) {
y = -y;
ys = y1 - y;
} else {
ys = y1;
}
fill_rectangle(screen,
s->xleft + x, ys, 1, y,
fgcolor);
i += channels;
if (i >= SAMPLE_ARRAY_SIZE)
i -= SAMPLE_ARRAY_SIZE;
}
}
fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
for(ch = 1;ch < nb_display_channels; ch++) {
y = s->ytop + ch * h;
fill_rectangle(screen,
s->xleft, y, s->width, 1,
fgcolor);
}
SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
}
/* display the current picture, if any */
static void video_display(VideoState *is)
{
if (is->audio_st && is->show_audio)
video_audio_display(is);
else if (is->video_st)
video_image_display(is);
}
static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
{
SDL_Event event;
event.type = FF_REFRESH_EVENT;
event.user.data1 = opaque;
SDL_PushEvent(&event);
return 0; /* 0 means stop timer */
}
/* schedule a video refresh in 'delay' ms */
static void schedule_refresh(VideoState *is, int delay)
{
SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
}
/* get the current audio clock value */
static double get_audio_clock(VideoState *is)
{
double pts;
int hw_buf_size, bytes_per_sec;
pts = is->audio_clock;
hw_buf_size = audio_write_get_buf_size(is);
bytes_per_sec = 0;
if (is->audio_st) {
bytes_per_sec = is->audio_st->codec.sample_rate *
2 * is->audio_st->codec.channels;
}
if (bytes_per_sec)
pts -= (double)hw_buf_size / bytes_per_sec;
return pts;
}
/* get the current video clock value */
static double get_video_clock(VideoState *is)
{
double delta;
if (is->paused) {
delta = 0;
} else {
delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
}
return is->video_current_pts + delta;
}
/* get the current external clock value */
static double get_external_clock(VideoState *is)
{
int64_t ti;
ti = av_gettime();
return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
}
/* get the current master clock value */
static double get_master_clock(VideoState *is)
{
double val;
if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
if (is->video_st)
val = get_video_clock(is);
else
val = get_audio_clock(is);
} else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
if (is->audio_st)
val = get_audio_clock(is);
else
val = get_video_clock(is);
} else {
val = get_external_clock(is);
}
return val;
}
/* seek in the stream */
static void stream_seek(VideoState *is, int64_t pos)
{
is->seek_pos = pos;
is->seek_req = 1;
}
/* pause or resume the video */
static void stream_pause(VideoState *is)
{
is->paused = !is->paused;
if (is->paused) {
is->video_current_pts = get_video_clock(is);
}
}
/* called to display each frame */
static void video_refresh_timer(void *opaque)
{
VideoState *is = opaque;
VideoPicture *vp;
double actual_delay, delay, sync_threshold, ref_clock, diff;
if (is->video_st) {
if (is->pictq_size == 0) {
/* if no picture, need to wait */
schedule_refresh(is, 40);
} else {
/* dequeue the picture */
vp = &is->pictq[is->pictq_rindex];
/* update current video pts */
is->video_current_pts = vp->pts;
is->video_current_pts_time = av_gettime();
/* compute nominal delay */
delay = vp->pts - is->frame_last_pts;
if (delay <= 0 || delay >= 1.0) {
/* if incorrect delay, use previous one */
delay = is->frame_last_delay;
}
is->frame_last_delay = delay;
is->frame_last_pts = vp->pts;
/* update delay to follow master synchronisation source */
if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
/* if video is slave, we try to correct big delays by
duplicating or deleting a frame */
ref_clock = get_master_clock(is);
diff = vp->pts - ref_clock;
/* skip or repeat frame. We take into account the
delay to compute the threshold. I still don't know
if it is the best guess */
sync_threshold = AV_SYNC_THRESHOLD;
if (delay > sync_threshold)
sync_threshold = delay;
if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
if (diff <= -sync_threshold)
delay = 0;
else if (diff >= sync_threshold)
delay = 2 * delay;
}
}
is->frame_timer += delay;
/* compute the REAL delay (we need to do that to avoid
long term errors */
actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
if (actual_delay < 0.010) {
/* XXX: should skip picture */
actual_delay = 0.010;
}
/* launch timer for next picture */
schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
#if defined(DEBUG_SYNC)
printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
delay, actual_delay, vp->pts, -diff);
#endif
/* display picture */
video_display(is);
/* update queue size and signal for next picture */
if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
is->pictq_rindex = 0;
SDL_LockMutex(is->pictq_mutex);
is->pictq_size--;
SDL_CondSignal(is->pictq_cond);
SDL_UnlockMutex(is->pictq_mutex);
}
} else if (is->audio_st) {
/* draw the next audio frame */
schedule_refresh(is, 40);
/* if only audio stream, then display the audio bars (better
than nothing, just to test the implementation */
/* display picture */
video_display(is);
} else {
schedule_refresh(is, 100);
}
if (show_status) {
static int64_t last_time;
int64_t cur_time;
int aqsize, vqsize;
double av_diff;
cur_time = av_gettime();
if (!last_time || (cur_time - last_time) >= 500 * 1000) {
aqsize = 0;
vqsize = 0;
if (is->audio_st)
aqsize = is->audioq.size;
if (is->video_st)
vqsize = is->videoq.size;
av_diff = 0;
if (is->audio_st && is->video_st)
av_diff = get_audio_clock(is) - get_video_clock(is);
printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB \r",
get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024);
fflush(stdout);
last_time = cur_time;
}
}
}
/* allocate a picture (needs to do that in main thread to avoid
potential locking problems */
static void alloc_picture(void *opaque)
{
VideoState *is = opaque;
VideoPicture *vp;
vp = &is->pictq[is->pictq_windex];
if (vp->bmp)
SDL_FreeYUVOverlay(vp->bmp);
#if 0
/* XXX: use generic function */
/* XXX: disable overlay if no hardware acceleration or if RGB format */
switch(is->video_st->codec.pix_fmt) {
case PIX_FMT_YUV420P:
case PIX_FMT_YUV422P:
case PIX_FMT_YUV444P:
case PIX_FMT_YUV422:
case PIX_FMT_YUV410P:
case PIX_FMT_YUV411P:
is_yuv = 1;
break;
default:
is_yuv = 0;
break;
}
#endif
vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec.width,
is->video_st->codec.height,
SDL_YV12_OVERLAY,
screen);
vp->width = is->video_st->codec.width;
vp->height = is->video_st->codec.height;
SDL_LockMutex(is->pictq_mutex);
vp->allocated = 1;
SDL_CondSignal(is->pictq_cond);
SDL_UnlockMutex(is->pictq_mutex);
}
static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
{
VideoPicture *vp;
int dst_pix_fmt;
AVPicture pict;
/* wait until we have space to put a new picture */
SDL_LockMutex(is->pictq_mutex);
while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
!is->videoq.abort_request) {
SDL_CondWait(is->pictq_cond, is->pictq_mutex);
}
SDL_UnlockMutex(is->pictq_mutex);
if (is->videoq.abort_request)
return -1;
vp = &is->pictq[is->pictq_windex];
/* alloc or resize hardware picture buffer */
if (!vp->bmp ||
vp->width != is->video_st->codec.width ||
vp->height != is->video_st->codec.height) {
SDL_Event event;
vp->allocated = 0;
/* the allocation must be done in the main thread to avoid
locking problems */
event.type = FF_ALLOC_EVENT;
event.user.data1 = is;
SDL_PushEvent(&event);
/* wait until the picture is allocated */
SDL_LockMutex(is->pictq_mutex);
while (!vp->allocated && !is->videoq.abort_request) {
SDL_CondWait(is->pictq_cond, is->pictq_mutex);
}
SDL_UnlockMutex(is->pictq_mutex);
if (is->videoq.abort_request)
return -1;
}
/* if the frame is not skipped, then display it */
if (vp->bmp) {
/* get a pointer on the bitmap */
SDL_LockYUVOverlay (vp->bmp);
dst_pix_fmt = PIX_FMT_YUV420P;
pict.data[0] = vp->bmp->pixels[0];
pict.data[1] = vp->bmp->pixels[2];
pict.data[2] = vp->bmp->pixels[1];
pict.linesize[0] = vp->bmp->pitches[0];
pict.linesize[1] = vp->bmp->pitches[2];
pict.linesize[2] = vp->bmp->pitches[1];
img_convert(&pict, dst_pix_fmt,
(AVPicture *)src_frame, is->video_st->codec.pix_fmt,
is->video_st->codec.width, is->video_st->codec.height);
/* update the bitmap content */
SDL_UnlockYUVOverlay(vp->bmp);
vp->pts = pts;
/* now we can update the picture count */
if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
is->pictq_windex = 0;
SDL_LockMutex(is->pictq_mutex);
is->pictq_size++;
SDL_UnlockMutex(is->pictq_mutex);
}
return 0;
}
/* compute the exact PTS for the picture if it is omitted in the stream */
static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
{
double frame_delay, pts;
pts = pts1;
/* if B frames are present, and if the current picture is a I
or P frame, we use the last pts */
if (is->video_st->codec.has_b_frames &&
src_frame->pict_type != FF_B_TYPE) {
/* use last pts */
pts = is->video_last_P_pts;
/* get the pts for the next I or P frame if present */
is->video_last_P_pts = pts1;
}
if (pts != 0) {
/* update video clock with pts, if present */
is->video_clock = pts;
} else {
pts = is->video_clock;
}
/* update video clock for next frame */
frame_delay = (double)is->video_st->codec.frame_rate_base /
(double)is->video_st->codec.frame_rate;
/* for MPEG2, the frame can be repeated, so we update the
clock accordingly */
if (src_frame->repeat_pict) {
frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
}
is->video_clock += frame_delay;
#if defined(DEBUG_SYNC) && 0
{
int ftype;
if (src_frame->pict_type == FF_B_TYPE)
ftype = 'B';
else if (src_frame->pict_type == FF_I_TYPE)
ftype = 'I';
else
ftype = 'P';
printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
ftype, pts, pts1);
}
#endif
return queue_picture(is, src_frame, pts);
}
static int video_thread(void *arg)
{
VideoState *is = arg;
AVPacket pkt1, *pkt = &pkt1;
int len1, got_picture;
AVFrame *frame= avcodec_alloc_frame();
double pts;
for(;;) {
while (is->paused && !is->videoq.abort_request) {
SDL_Delay(10);
}
if (packet_queue_get(&is->videoq, pkt, 1) < 0)
break;
/* NOTE: ipts is the PTS of the _first_ picture beginning in
this packet, if any */
pts = 0;
if (pkt->pts != AV_NOPTS_VALUE)
pts = (double)pkt->pts / AV_TIME_BASE;
if (is->video_st->codec.codec_id == CODEC_ID_RAWVIDEO) {
avpicture_fill((AVPicture *)frame, pkt->data,
is->video_st->codec.pix_fmt,
is->video_st->codec.width,
is->video_st->codec.height);
frame->pict_type = FF_I_TYPE;
if (output_picture2(is, frame, pts) < 0)
goto the_end;
} else {
len1 = avcodec_decode_video(&is->video_st->codec,
frame, &got_picture,
pkt->data, pkt->size);
// if (len1 < 0)
// break;
if (got_picture) {
if (output_picture2(is, frame, pts) < 0)
goto the_end;
}
}
av_free_packet(pkt);
if (step)
if (cur_stream)
stream_pause(cur_stream);
}
the_end:
av_free(frame);
return 0;
}
/* copy samples for viewing in editor window */
static void update_sample_display(VideoState *is, short *samples, int samples_size)
{
int size, len, channels;
channels = is->audio_st->codec.channels;
size = samples_size / sizeof(short);
while (size > 0) {
len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
if (len > size)
len = size;
memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
samples += len;
is->sample_array_index += len;
if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
is->sample_array_index = 0;
size -= len;
}
}
/* return the new audio buffer size (samples can be added or deleted
to get better sync if video or external master clock) */
static int synchronize_audio(VideoState *is, short *samples,
int samples_size1, double pts)
{
int n, samples_size;
double ref_clock;
n = 2 * is->audio_st->codec.channels;
samples_size = samples_size1;
/* if not master, then we try to remove or add samples to correct the clock */
if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
double diff, avg_diff;
int wanted_size, min_size, max_size, nb_samples;
ref_clock = get_master_clock(is);
diff = get_audio_clock(is) - ref_clock;
if (diff < AV_NOSYNC_THRESHOLD) {
is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
/* not enough measures to have a correct estimate */
is->audio_diff_avg_count++;
} else {
/* estimate the A-V difference */
avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
if (fabs(avg_diff) >= is->audio_diff_threshold) {
wanted_size = samples_size + ((int)(diff * is->audio_st->codec.sample_rate) * n);
nb_samples = samples_size / n;
min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
if (wanted_size < min_size)
wanted_size = min_size;
else if (wanted_size > max_size)
wanted_size = max_size;
/* add or remove samples to correction the synchro */
if (wanted_size < samples_size) {
/* remove samples */
samples_size = wanted_size;
} else if (wanted_size > samples_size) {
uint8_t *samples_end, *q;
int nb;
/* add samples */
nb = (samples_size - wanted_size);
samples_end = (uint8_t *)samples + samples_size - n;
q = samples_end + n;
while (nb > 0) {
memcpy(q, samples_end, n);
q += n;
nb -= n;
}
samples_size = wanted_size;
}
}
#if 0
printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
diff, avg_diff, samples_size - samples_size1,
is->audio_clock, is->video_clock, is->audio_diff_threshold);
#endif
}
} else {
/* too big difference : may be initial PTS errors, so
reset A-V filter */
is->audio_diff_avg_count = 0;
is->audio_diff_cum = 0;
}
}
return samples_size;
}
/* decode one audio frame and returns its uncompressed size */
static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
{
AVPacket *pkt = &is->audio_pkt;
int n, len1, data_size;
double pts;
for(;;) {
/* NOTE: the audio packet can contain several frames */
while (is->audio_pkt_size > 0) {
len1 = avcodec_decode_audio(&is->audio_st->codec,
(int16_t *)audio_buf, &data_size,
is->audio_pkt_data, is->audio_pkt_size);
if (len1 < 0) {
/* if error, we skip the frame */
is->audio_pkt_size = 0;
break;
}
is->audio_pkt_data += len1;
is->audio_pkt_size -= len1;
if (data_size <= 0)
continue;
/* if no pts, then compute it */
pts = is->audio_clock;
*pts_ptr = pts;
n = 2 * is->audio_st->codec.channels;
is->audio_clock += (double)data_size /
(double)(n * is->audio_st->codec.sample_rate);
#if defined(DEBUG_SYNC)
{
static double last_clock;
printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
is->audio_clock - last_clock,
is->audio_clock, pts);
last_clock = is->audio_clock;
}
#endif
return data_size;
}
/* free the current packet */
if (pkt->data)
av_free_packet(pkt);
if (is->paused || is->audioq.abort_request) {
return -1;
}
/* read next packet */
if (packet_queue_get(&is->audioq, pkt, 1) < 0)
return -1;
is->audio_pkt_data = pkt->data;
is->audio_pkt_size = pkt->size;
/* if update the audio clock with the pts */
if (pkt->pts != AV_NOPTS_VALUE) {
is->audio_clock = (double)pkt->pts / AV_TIME_BASE;
}
}
}
/* get the current audio output buffer size, in samples. With SDL, we
cannot have a precise information */
static int audio_write_get_buf_size(VideoState *is)
{
return is->audio_hw_buf_size - is->audio_buf_index;
}
/* prepare a new audio buffer */
void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
{
VideoState *is = opaque;
int audio_size, len1;
double pts;
audio_callback_time = av_gettime();
while (len > 0) {
if (is->audio_buf_index >= is->audio_buf_size) {
audio_size = audio_decode_frame(is, is->audio_buf, &pts);
if (audio_size < 0) {
/* if error, just output silence */
is->audio_buf_size = 1024;
memset(is->audio_buf, 0, is->audio_buf_size);
} else {
if (is->show_audio)
update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
pts);
is->audio_buf_size = audio_size;
}
is->audio_buf_index = 0;
}
len1 = is->audio_buf_size - is->audio_buf_index;
if (len1 > len)
len1 = len;
memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
len -= len1;
stream += len1;
is->audio_buf_index += len1;
}
}
/* open a given stream. Return 0 if OK */
static int stream_component_open(VideoState *is, int stream_index)
{
AVFormatContext *ic = is->ic;
AVCodecContext *enc;
AVCodec *codec;
SDL_AudioSpec wanted_spec, spec;
if (stream_index < 0 || stream_index >= ic->nb_streams)
return -1;
enc = &ic->streams[stream_index]->codec;
/* prepare audio output */
if (enc->codec_type == CODEC_TYPE_AUDIO) {
wanted_spec.freq = enc->sample_rate;
wanted_spec.format = AUDIO_S16SYS;
/* hack for AC3. XXX: suppress that */
if (enc->channels > 2)
enc->channels = 2;
wanted_spec.channels = enc->channels;
wanted_spec.silence = 0;
wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
wanted_spec.callback = sdl_audio_callback;
wanted_spec.userdata = is;
if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
return -1;
}
is->audio_hw_buf_size = spec.size;
}
codec = avcodec_find_decoder(enc->codec_id);
if (!codec ||
avcodec_open(enc, codec) < 0)
return -1;
switch(enc->codec_type) {
case CODEC_TYPE_AUDIO:
is->audio_stream = stream_index;
is->audio_st = ic->streams[stream_index];
is->audio_buf_size = 0;
is->audio_buf_index = 0;
/* init averaging filter */
is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
is->audio_diff_avg_count = 0;
/* since we do not have a precise anough audio fifo fullness,
we correct audio sync only if larger than this threshold */
is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
packet_queue_init(&is->audioq);
SDL_PauseAudio(0);
break;
case CODEC_TYPE_VIDEO:
is->video_stream = stream_index;
is->video_st = ic->streams[stream_index];
is->frame_last_delay = 40e-3;
is->frame_timer = (double)av_gettime() / 1000000.0;
is->video_current_pts_time = av_gettime();
packet_queue_init(&is->videoq);
is->video_tid = SDL_CreateThread(video_thread, is);
enc->debug = debug;
enc->debug_mv = debug_mv;
break;
default:
break;
}
return 0;
}
static void stream_component_close(VideoState *is, int stream_index)
{
AVFormatContext *ic = is->ic;
AVCodecContext *enc;
enc = &ic->streams[stream_index]->codec;
switch(enc->codec_type) {
case CODEC_TYPE_AUDIO:
packet_queue_abort(&is->audioq);
SDL_CloseAudio();
packet_queue_end(&is->audioq);
break;
case CODEC_TYPE_VIDEO:
packet_queue_abort(&is->videoq);
/* note: we also signal this mutex to make sure we deblock the
video thread in all cases */
SDL_LockMutex(is->pictq_mutex);
SDL_CondSignal(is->pictq_cond);
SDL_UnlockMutex(is->pictq_mutex);
SDL_WaitThread(is->video_tid, NULL);
packet_queue_end(&is->videoq);
break;
default:
break;
}
avcodec_close(enc);
switch(enc->codec_type) {
case CODEC_TYPE_AUDIO:
is->audio_st = NULL;
is->audio_stream = -1;
break;
case CODEC_TYPE_VIDEO:
is->video_st = NULL;
is->video_stream = -1;
break;
default:
break;
}
}
void dump_stream_info(AVFormatContext *s)
{
if (s->track != 0)
fprintf(stderr, "Track: %d\n", s->track);
if (s->title[0] != '\0')
fprintf(stderr, "Title: %s\n", s->title);
if (s->author[0] != '\0')
fprintf(stderr, "Author: %s\n", s->author);
if (s->album[0] != '\0')
fprintf(stderr, "Album: %s\n", s->album);
if (s->year != 0)
fprintf(stderr, "Year: %d\n", s->year);
if (s->genre[0] != '\0')
fprintf(stderr, "Genre: %s\n", s->genre);
}
/* since we have only one decoding thread, we can use a global
variable instead of a thread local variable */
static VideoState *global_video_state;
static int decode_interrupt_cb(void)
{
return (global_video_state && global_video_state->abort_request);
}
/* this thread gets the stream from the disk or the network */
static int decode_thread(void *arg)
{
VideoState *is = arg;
AVFormatContext *ic;
int err, i, ret, video_index, audio_index, use_play;
AVPacket pkt1, *pkt = &pkt1;
AVFormatParameters params, *ap = &params;
video_index = -1;
audio_index = -1;
is->video_stream = -1;
is->audio_stream = -1;
global_video_state = is;
url_set_interrupt_cb(decode_interrupt_cb);
memset(ap, 0, sizeof(*ap));
ap->image_format = image_format;
ap->initial_pause = 1; /* we force a pause when starting an RTSP
stream */
err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
if (err < 0) {
print_error(is->filename, err);
ret = -1;
goto fail;
}
is->ic = ic;
#ifdef CONFIG_NETWORK
use_play = (ic->iformat == &rtsp_demux);
#else
use_play = 0;
#endif
if (!use_play) {
err = av_find_stream_info(ic);
if (err < 0) {
fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
ret = -1;
goto fail;
}
}
/* if seeking requested, we execute it */
if (start_time != AV_NOPTS_VALUE) {
int64_t timestamp;
timestamp = start_time;
/* add the stream start time */
if (ic->start_time != AV_NOPTS_VALUE)
timestamp += ic->start_time;
ret = av_seek_frame(ic, -1, timestamp);
if (ret < 0) {
fprintf(stderr, "%s: could not seek to position %0.3f\n",
is->filename, (double)timestamp / AV_TIME_BASE);
}
}
/* now we can begin to play (RTSP stream only) */
av_read_play(ic);
if (use_play) {
err = av_find_stream_info(ic);
if (err < 0) {
fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
ret = -1;
goto fail;
}
}
for(i = 0; i < ic->nb_streams; i++) {
AVCodecContext *enc = &ic->streams[i]->codec;
switch(enc->codec_type) {
case CODEC_TYPE_AUDIO:
if (audio_index < 0 && !audio_disable)
audio_index = i;
break;
case CODEC_TYPE_VIDEO:
if (video_index < 0 && !video_disable)
video_index = i;
break;
default:
break;
}
}
if (show_status) {
dump_format(ic, 0, is->filename, 0);
dump_stream_info(ic);
}
/* open the streams */
if (audio_index >= 0) {
stream_component_open(is, audio_index);
}
if (video_index >= 0) {
stream_component_open(is, video_index);
} else {
if (!display_disable)
is->show_audio = 1;
}
if (is->video_stream < 0 && is->audio_stream < 0) {
fprintf(stderr, "%s: could not open codecs\n", is->filename);
ret = -1;
goto fail;
}
for(;;) {
if (is->abort_request)
break;
#ifdef CONFIG_NETWORK
if (is->paused != is->last_paused) {
is->last_paused = is->paused;
if (is->paused)
av_read_pause(ic);
else
av_read_play(ic);
}
if (is->paused && ic->iformat == &rtsp_demux) {
/* wait 10 ms to avoid trying to get another packet */
/* XXX: horrible */
SDL_Delay(10);
continue;
}
#endif
if (is->seek_req) {
/* XXX: must lock decoder threads */
ret = av_seek_frame(is->ic, -1, is->seek_pos);
if (ret < 0) {
fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
}else{
if (is->audio_stream >= 0) {
packet_queue_flush(&is->audioq);
}
if (is->video_stream >= 0) {
packet_queue_flush(&is->videoq);
avcodec_flush_buffers(&ic->streams[video_index]->codec);
}
}
is->seek_req = 0;
}
/* if the queue are full, no need to read more */
if (is->audioq.size > MAX_AUDIOQ_SIZE ||
is->videoq.size > MAX_VIDEOQ_SIZE ||
url_feof(&ic->pb)) {
/* wait 10 ms */
SDL_Delay(10);
continue;
}
ret = av_read_frame(ic, pkt);
if (ret < 0) {
break;
}
if (pkt->stream_index == is->audio_stream) {
packet_queue_put(&is->audioq, pkt);
} else if (pkt->stream_index == is->video_stream) {
packet_queue_put(&is->videoq, pkt);
} else {
av_free_packet(pkt);
}
}
/* wait until the end */
while (!is->abort_request) {
SDL_Delay(100);
}
ret = 0;
fail:
/* disable interrupting */
global_video_state = NULL;
/* close each stream */
if (is->audio_stream >= 0)
stream_component_close(is, is->audio_stream);
if (is->video_stream >= 0)
stream_component_close(is, is->video_stream);
if (is->ic) {
av_close_input_file(is->ic);
is->ic = NULL; /* safety */
}
url_set_interrupt_cb(NULL);
if (ret != 0) {
SDL_Event event;
event.type = FF_QUIT_EVENT;
event.user.data1 = is;
SDL_PushEvent(&event);
}
return 0;
}
static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
{
VideoState *is;
is = av_mallocz(sizeof(VideoState));
if (!is)
return NULL;
pstrcpy(is->filename, sizeof(is->filename), filename);
is->iformat = iformat;
if (screen) {
is->width = screen->w;
is->height = screen->h;
}
is->ytop = 0;
is->xleft = 0;
/* start video display */
is->pictq_mutex = SDL_CreateMutex();
is->pictq_cond = SDL_CreateCond();
/* add the refresh timer to draw the picture */
schedule_refresh(is, 40);
is->av_sync_type = av_sync_type;
is->parse_tid = SDL_CreateThread(decode_thread, is);
if (!is->parse_tid) {
av_free(is);
return NULL;
}
return is;
}
static void stream_close(VideoState *is)
{
VideoPicture *vp;
int i;
/* XXX: use a special url_shutdown call to abort parse cleanly */
is->abort_request = 1;
SDL_WaitThread(is->parse_tid, NULL);
/* free all pictures */
for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
vp = &is->pictq[i];
if (vp->bmp) {
SDL_FreeYUVOverlay(vp->bmp);
vp->bmp = NULL;
}
}
SDL_DestroyMutex(is->pictq_mutex);
SDL_DestroyCond(is->pictq_cond);
}
void stream_cycle_channel(VideoState *is, int codec_type)
{
AVFormatContext *ic = is->ic;
int start_index, stream_index;
AVStream *st;
if (codec_type == CODEC_TYPE_VIDEO)
start_index = is->video_stream;
else
start_index = is->audio_stream;
if (start_index < 0)
return;
stream_index = start_index;
for(;;) {
if (++stream_index >= is->ic->nb_streams)
stream_index = 0;
if (stream_index == start_index)
return;
st = ic->streams[stream_index];
if (st->codec.codec_type == codec_type) {
/* check that parameters are OK */
switch(codec_type) {
case CODEC_TYPE_AUDIO:
if (st->codec.sample_rate != 0 &&
st->codec.channels != 0)
goto the_end;
break;
case CODEC_TYPE_VIDEO:
goto the_end;
default:
break;
}
}
}
the_end:
stream_component_close(is, start_index);
stream_component_open(is, stream_index);
}
void toggle_full_screen(void)
{
int w, h, flags;
is_full_screen = !is_full_screen;
if (!fs_screen_width) {
/* use default SDL method */
SDL_WM_ToggleFullScreen(screen);
} else {
/* use the recorded resolution */
flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
if (is_full_screen) {
w = fs_screen_width;
h = fs_screen_height;
flags |= SDL_FULLSCREEN;
} else {
w = screen_width;
h = screen_height;
flags |= SDL_RESIZABLE;
}
screen = SDL_SetVideoMode(w, h, 0, flags);
cur_stream->width = w;
cur_stream->height = h;
}
}
void toggle_pause(void)
{
if (cur_stream)
stream_pause(cur_stream);
step = 0;
}
void step_to_next_frame(void)
{
if (cur_stream) {
if (cur_stream->paused)
cur_stream->paused=0;
cur_stream->video_current_pts = get_video_clock(cur_stream);
}
step = 1;
}
void do_exit(void)
{
if (cur_stream) {
stream_close(cur_stream);
cur_stream = NULL;
}
if (show_status)
printf("\n");
SDL_Quit();
exit(0);
}
void toggle_audio_display(void)
{
if (cur_stream) {
cur_stream->show_audio = !cur_stream->show_audio;
}
}
/* handle an event sent by the GUI */
void event_loop(void)
{
SDL_Event event;
double incr, pos, frac;
for(;;) {
SDL_WaitEvent(&event);
switch(event.type) {
case SDL_KEYDOWN:
switch(event.key.keysym.sym) {
case SDLK_ESCAPE:
case SDLK_q:
do_exit();
break;
case SDLK_f:
toggle_full_screen();
break;
case SDLK_p:
case SDLK_SPACE:
toggle_pause();
break;
case SDLK_s: //S: Step to next frame
step_to_next_frame();
break;
case SDLK_a:
if (cur_stream)
stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
break;
case SDLK_v:
if (cur_stream)
stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
break;
case SDLK_w:
toggle_audio_display();
break;
case SDLK_LEFT:
incr = -10.0;
goto do_seek;
case SDLK_RIGHT:
incr = 10.0;
goto do_seek;
case SDLK_UP:
incr = 60.0;
goto do_seek;
case SDLK_DOWN:
incr = -60.0;
do_seek:
if (cur_stream) {
pos = get_master_clock(cur_stream);
pos += incr;
stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE));
}
break;
default:
break;
}
break;
case SDL_MOUSEBUTTONDOWN:
if (cur_stream) {
int ns, hh, mm, ss;
int tns, thh, tmm, tss;
tns = cur_stream->ic->duration/1000000LL;
thh = tns/3600;
tmm = (tns%3600)/60;
tss = (tns%60);
frac = (double)event.button.x/(double)cur_stream->width;
ns = frac*tns;
hh = ns/3600;
mm = (ns%3600)/60;
ss = (ns%60);
fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
hh, mm, ss, thh, tmm, tss);
stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration));
}
break;
case SDL_VIDEORESIZE:
if (cur_stream) {
screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
cur_stream->width = event.resize.w;
cur_stream->height = event.resize.h;
}
break;
case SDL_QUIT:
case FF_QUIT_EVENT:
do_exit();
break;
case FF_ALLOC_EVENT:
alloc_picture(event.user.data1);
break;
case FF_REFRESH_EVENT:
video_refresh_timer(event.user.data1);
break;
default:
break;
}
}
}
void opt_width(const char *arg)
{
screen_width = atoi(arg);
}
void opt_height(const char *arg)
{
screen_height = atoi(arg);
}
static void opt_format(const char *arg)
{
file_iformat = av_find_input_format(arg);
if (!file_iformat) {
fprintf(stderr, "Unknown input format: %s\n", arg);
exit(1);
}
}
static void opt_image_format(const char *arg)
{
AVImageFormat *f;
for(f = first_image_format; f != NULL; f = f->next) {
if (!strcmp(arg, f->name))
break;
}
if (!f) {
fprintf(stderr, "Unknown image format: '%s'\n", arg);
exit(1);
}
image_format = f;
}
#ifdef CONFIG_NETWORK
void opt_rtp_tcp(void)
{
/* only tcp protocol */
rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
}
#endif
void opt_sync(const char *arg)
{
if (!strcmp(arg, "audio"))
av_sync_type = AV_SYNC_AUDIO_MASTER;
else if (!strcmp(arg, "video"))
av_sync_type = AV_SYNC_VIDEO_MASTER;
else if (!strcmp(arg, "ext"))
av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
else
show_help();
}
void opt_seek(const char *arg)
{
start_time = parse_date(arg, 1);
}
static void opt_debug(const char *arg)
{
debug = atoi(arg);
}
static void opt_vismv(const char *arg)
{
debug_mv = atoi(arg);
}
const OptionDef options[] = {
{ "h", 0, {(void*)show_help}, "show help" },
{ "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
{ "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
#if 0
/* disabled as SDL/X11 does not support it correctly on application launch */
{ "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
#endif
{ "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
{ "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
{ "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
{ "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
{ "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
{ "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },
{ "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
{ "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
{ "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
#ifdef CONFIG_NETWORK
{ "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
#endif
{ "sync", HAS_ARG | OPT_EXPERT, {(void*)&opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
{ NULL, },
};
void show_help(void)
{
printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
"usage: ffplay [options] input_file\n"
"Simple media player\n");
printf("\n");
show_help_options(options, "Main options:\n",
OPT_EXPERT, 0);
show_help_options(options, "\nAdvanced options:\n",
OPT_EXPERT, OPT_EXPERT);
printf("\nWhile playing:\n"
"q, ESC quit\n"
"f toggle full screen\n"
"p, SPC pause\n"
"a cycle audio channel\n"
"v cycle video channel\n"
"w show audio waves\n"
"left/right seek backward/forward 10 seconds\n"
"down/up seek backward/forward 1 minute\n"
"mouse click seek to percentage in file corresponding to fraction of width\n"
);
exit(1);
}
void parse_arg_file(const char *filename)
{
if (!strcmp(filename, "-"))
filename = "pipe:";
input_filename = filename;
}
/* Called from the main */
int main(int argc, char **argv)
{
int flags, w, h;
/* register all codecs, demux and protocols */
av_register_all();
parse_options(argc, argv, options);
if (!input_filename)
show_help();
if (display_disable) {
video_disable = 1;
}
flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
#ifndef CONFIG_WIN32
flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 */
#endif
if (SDL_Init (flags)) {
fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
exit(1);
}
if (!display_disable) {
#ifdef HAVE_X11
/* save the screen resolution... SDL should allow full screen
by resizing the window */
{
Display *dpy;
dpy = XOpenDisplay(NULL);
if (dpy) {
fs_screen_width = DisplayWidth(dpy, DefaultScreen(dpy));
fs_screen_height = DisplayHeight(dpy, DefaultScreen(dpy));
XCloseDisplay(dpy);
}
}
#endif
flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
if (is_full_screen && fs_screen_width) {
w = fs_screen_width;
h = fs_screen_height;
flags |= SDL_FULLSCREEN;
} else {
w = screen_width;
h = screen_height;
flags |= SDL_RESIZABLE;
}
screen = SDL_SetVideoMode(w, h, 0, flags);
if (!screen) {
fprintf(stderr, "SDL: could not set video mode - exiting\n");
exit(1);
}
SDL_WM_SetCaption("FFplay", "FFplay");
}
SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
cur_stream = stream_open(input_filename, file_iformat);
event_loop();
/* never returns */
return 0;
}
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