ffmpeg/ffplay.c
Marton Balint fc38bbcd6a ffplay: disallow seeking before the start of the file
In timestamp based seeking we update the external clock to the seek target,
therefore we should use sane timestamps even if libavformat could handle
seeking before the start of the file.

Signed-off-by: Marton Balint <cus@passwd.hu>
2012-11-28 21:39:50 +01:00

3343 lines
111 KiB
C

/*
* Copyright (c) 2003 Fabrice Bellard
*
* 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
* simple media player based on the FFmpeg libraries
*/
#include "config.h"
#include <inttypes.h>
#include <math.h>
#include <limits.h>
#include <signal.h>
#include "libavutil/avstring.h"
#include "libavutil/colorspace.h"
#include "libavutil/mathematics.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "libavutil/dict.h"
#include "libavutil/parseutils.h"
#include "libavutil/samplefmt.h"
#include "libavutil/avassert.h"
#include "libavutil/time.h"
#include "libavformat/avformat.h"
#include "libavdevice/avdevice.h"
#include "libswscale/swscale.h"
#include "libavutil/opt.h"
#include "libavcodec/avfft.h"
#include "libswresample/swresample.h"
#if CONFIG_AVFILTER
# include "libavfilter/avcodec.h"
# include "libavfilter/avfilter.h"
# include "libavfilter/avfiltergraph.h"
# include "libavfilter/buffersink.h"
# include "libavfilter/buffersrc.h"
#endif
#include <SDL.h>
#include <SDL_thread.h>
#include "cmdutils.h"
#include <assert.h>
const char program_name[] = "ffplay";
const int program_birth_year = 2003;
#define MAX_QUEUE_SIZE (15 * 1024 * 1024)
#define MIN_FRAMES 5
/* 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 0.01
/* 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
/* external clock speed adjustment constants for realtime sources based on buffer fullness */
#define EXTERNAL_CLOCK_SPEED_MIN 0.900
#define EXTERNAL_CLOCK_SPEED_MAX 1.010
#define EXTERNAL_CLOCK_SPEED_STEP 0.001
/* 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 */
/* TODO: We assume that a decoded and resampled frame fits into this buffer */
#define SAMPLE_ARRAY_SIZE (8 * 65536)
static int sws_flags = SWS_BICUBIC;
typedef struct MyAVPacketList {
AVPacket pkt;
struct MyAVPacketList *next;
int serial;
} MyAVPacketList;
typedef struct PacketQueue {
MyAVPacketList *first_pkt, *last_pkt;
int nb_packets;
int size;
int abort_request;
int serial;
SDL_mutex *mutex;
SDL_cond *cond;
} PacketQueue;
#define VIDEO_PICTURE_QUEUE_SIZE 4
#define SUBPICTURE_QUEUE_SIZE 4
typedef struct VideoPicture {
double pts; // presentation timestamp for this picture
int64_t pos; // byte position in file
int skip;
SDL_Overlay *bmp;
int width, height; /* source height & width */
AVRational sample_aspect_ratio;
int allocated;
int reallocate;
int serial;
#if CONFIG_AVFILTER
AVFilterBufferRef *picref;
#endif
} VideoPicture;
typedef struct SubPicture {
double pts; /* presentation time stamp for this picture */
AVSubtitle sub;
} SubPicture;
typedef struct AudioParams {
int freq;
int channels;
int channel_layout;
enum AVSampleFormat fmt;
} AudioParams;
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 *read_tid;
SDL_Thread *video_tid;
SDL_Thread *refresh_tid;
AVInputFormat *iformat;
int no_background;
int abort_request;
int force_refresh;
int paused;
int last_paused;
int que_attachments_req;
int seek_req;
int seek_flags;
int64_t seek_pos;
int64_t seek_rel;
int read_pause_return;
AVFormatContext *ic;
int realtime;
int audio_stream;
int av_sync_type;
double external_clock; ///< external clock base
double external_clock_drift; ///< external clock base - time (av_gettime) at which we updated external_clock
int64_t external_clock_time; ///< last reference time
double external_clock_speed; ///< speed of the external clock
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;
DECLARE_ALIGNED(16,uint8_t,audio_buf2)[AVCODEC_MAX_AUDIO_FRAME_SIZE * 4];
uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
uint8_t *audio_buf;
uint8_t *audio_buf1;
unsigned int audio_buf_size; /* in bytes */
int audio_buf_index; /* in bytes */
int audio_write_buf_size;
AVPacket audio_pkt_temp;
AVPacket audio_pkt;
int audio_pkt_temp_serial;
struct AudioParams audio_src;
struct AudioParams audio_tgt;
struct SwrContext *swr_ctx;
double audio_current_pts;
double audio_current_pts_drift;
int frame_drops_early;
int frame_drops_late;
AVFrame *frame;
enum ShowMode {
SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
} show_mode;
int16_t sample_array[SAMPLE_ARRAY_SIZE];
int sample_array_index;
int last_i_start;
RDFTContext *rdft;
int rdft_bits;
FFTSample *rdft_data;
int xpos;
SDL_Thread *subtitle_tid;
int subtitle_stream;
int subtitle_stream_changed;
AVStream *subtitle_st;
PacketQueue subtitleq;
SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
int subpq_size, subpq_rindex, subpq_windex;
SDL_mutex *subpq_mutex;
SDL_cond *subpq_cond;
double frame_timer;
double frame_last_pts;
double frame_last_duration;
double frame_last_dropped_pts;
double frame_last_returned_time;
double frame_last_filter_delay;
int64_t frame_last_dropped_pos;
double video_clock; // pts of last decoded frame / predicted pts of next decoded frame
int video_stream;
AVStream *video_st;
PacketQueue videoq;
double video_current_pts; // current displayed pts (different from video_clock if frame fifos are used)
double video_current_pts_drift; // video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
int64_t video_current_pos; // current displayed file pos
VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
int pictq_size, pictq_rindex, pictq_windex;
SDL_mutex *pictq_mutex;
SDL_cond *pictq_cond;
#if !CONFIG_AVFILTER
struct SwsContext *img_convert_ctx;
#endif
SDL_Rect last_display_rect;
char filename[1024];
int width, height, xleft, ytop;
int step;
#if CONFIG_AVFILTER
AVFilterContext *in_video_filter; // the first filter in the video chain
AVFilterContext *out_video_filter; // the last filter in the video chain
int use_dr1;
FrameBuffer *buffer_pool;
#endif
int refresh;
int last_video_stream, last_audio_stream, last_subtitle_stream;
SDL_cond *continue_read_thread;
} VideoState;
/* options specified by the user */
static AVInputFormat *file_iformat;
static const char *input_filename;
static const char *window_title;
static int fs_screen_width;
static int fs_screen_height;
static int screen_width = 0;
static int screen_height = 0;
static int audio_disable;
static int video_disable;
static int wanted_stream[AVMEDIA_TYPE_NB] = {
[AVMEDIA_TYPE_AUDIO] = -1,
[AVMEDIA_TYPE_VIDEO] = -1,
[AVMEDIA_TYPE_SUBTITLE] = -1,
};
static int seek_by_bytes = -1;
static int display_disable;
static int show_status = 1;
static int av_sync_type = AV_SYNC_AUDIO_MASTER;
static int64_t start_time = AV_NOPTS_VALUE;
static int64_t duration = AV_NOPTS_VALUE;
static int workaround_bugs = 1;
static int fast = 0;
static int genpts = 0;
static int lowres = 0;
static int idct = FF_IDCT_AUTO;
static enum AVDiscard skip_frame = AVDISCARD_DEFAULT;
static enum AVDiscard skip_idct = AVDISCARD_DEFAULT;
static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
static int error_concealment = 3;
static int decoder_reorder_pts = -1;
static int autoexit;
static int exit_on_keydown;
static int exit_on_mousedown;
static int loop = 1;
static int framedrop = -1;
static int infinite_buffer = -1;
static enum ShowMode show_mode = SHOW_MODE_NONE;
static const char *audio_codec_name;
static const char *subtitle_codec_name;
static const char *video_codec_name;
static int rdftspeed = 20;
#if CONFIG_AVFILTER
static char *vfilters = NULL;
#endif
/* current context */
static int is_full_screen;
static int64_t audio_callback_time;
static AVPacket flush_pkt;
#define FF_ALLOC_EVENT (SDL_USEREVENT)
#define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
#define FF_QUIT_EVENT (SDL_USEREVENT + 2)
static SDL_Surface *screen;
static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
{
MyAVPacketList *pkt1;
if (q->abort_request)
return -1;
pkt1 = av_malloc(sizeof(MyAVPacketList));
if (!pkt1)
return -1;
pkt1->pkt = *pkt;
pkt1->next = NULL;
if (pkt == &flush_pkt)
q->serial++;
pkt1->serial = q->serial;
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 + sizeof(*pkt1);
/* XXX: should duplicate packet data in DV case */
SDL_CondSignal(q->cond);
return 0;
}
static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
{
int ret;
/* duplicate the packet */
if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
return -1;
SDL_LockMutex(q->mutex);
ret = packet_queue_put_private(q, pkt);
SDL_UnlockMutex(q->mutex);
if (pkt != &flush_pkt && ret < 0)
av_free_packet(pkt);
return ret;
}
/* packet queue handling */
static void packet_queue_init(PacketQueue *q)
{
memset(q, 0, sizeof(PacketQueue));
q->mutex = SDL_CreateMutex();
q->cond = SDL_CreateCond();
q->abort_request = 1;
}
static void packet_queue_flush(PacketQueue *q)
{
MyAVPacketList *pkt, *pkt1;
SDL_LockMutex(q->mutex);
for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
pkt1 = pkt->next;
av_free_packet(&pkt->pkt);
av_freep(&pkt);
}
q->last_pkt = NULL;
q->first_pkt = NULL;
q->nb_packets = 0;
q->size = 0;
SDL_UnlockMutex(q->mutex);
}
static void packet_queue_destroy(PacketQueue *q)
{
packet_queue_flush(q);
SDL_DestroyMutex(q->mutex);
SDL_DestroyCond(q->cond);
}
static void packet_queue_abort(PacketQueue *q)
{
SDL_LockMutex(q->mutex);
q->abort_request = 1;
SDL_CondSignal(q->cond);
SDL_UnlockMutex(q->mutex);
}
static void packet_queue_start(PacketQueue *q)
{
SDL_LockMutex(q->mutex);
q->abort_request = 0;
packet_queue_put_private(q, &flush_pkt);
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, int *serial)
{
MyAVPacketList *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 + sizeof(*pkt1);
*pkt = pkt1->pkt;
if (serial)
*serial = pkt1->serial;
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, int update)
{
SDL_Rect rect;
rect.x = x;
rect.y = y;
rect.w = w;
rect.h = h;
SDL_FillRect(screen, &rect, color);
if (update && w > 0 && h > 0)
SDL_UpdateRect(screen, x, y, w, h);
}
/* draw only the border of a rectangle */
static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
{
int w1, w2, h1, h2;
/* fill the background */
w1 = x;
if (w1 < 0)
w1 = 0;
w2 = width - (x + w);
if (w2 < 0)
w2 = 0;
h1 = y;
if (h1 < 0)
h1 = 0;
h2 = height - (y + h);
if (h2 < 0)
h2 = 0;
fill_rectangle(screen,
xleft, ytop,
w1, height,
color, update);
fill_rectangle(screen,
xleft + width - w2, ytop,
w2, height,
color, update);
fill_rectangle(screen,
xleft + w1, ytop,
width - w1 - w2, h1,
color, update);
fill_rectangle(screen,
xleft + w1, ytop + height - h2,
width - w1 - w2, h2,
color, update);
}
#define ALPHA_BLEND(a, oldp, newp, s)\
((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
#define RGBA_IN(r, g, b, a, s)\
{\
unsigned int v = ((const uint32_t *)(s))[0];\
a = (v >> 24) & 0xff;\
r = (v >> 16) & 0xff;\
g = (v >> 8) & 0xff;\
b = v & 0xff;\
}
#define YUVA_IN(y, u, v, a, s, pal)\
{\
unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
a = (val >> 24) & 0xff;\
y = (val >> 16) & 0xff;\
u = (val >> 8) & 0xff;\
v = val & 0xff;\
}
#define YUVA_OUT(d, y, u, v, a)\
{\
((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
}
#define BPP 1
static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
{
int wrap, wrap3, width2, skip2;
int y, u, v, a, u1, v1, a1, w, h;
uint8_t *lum, *cb, *cr;
const uint8_t *p;
const uint32_t *pal;
int dstx, dsty, dstw, dsth;
dstw = av_clip(rect->w, 0, imgw);
dsth = av_clip(rect->h, 0, imgh);
dstx = av_clip(rect->x, 0, imgw - dstw);
dsty = av_clip(rect->y, 0, imgh - dsth);
lum = dst->data[0] + dsty * dst->linesize[0];
cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
skip2 = dstx >> 1;
wrap = dst->linesize[0];
wrap3 = rect->pict.linesize[0];
p = rect->pict.data[0];
pal = (const uint32_t *)rect->pict.data[1]; /* Now in YCrCb! */
if (dsty & 1) {
lum += dstx;
cb += skip2;
cr += skip2;
if (dstx & 1) {
YUVA_IN(y, u, v, a, p, pal);
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
cb++;
cr++;
lum++;
p += BPP;
}
for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
YUVA_IN(y, u, v, a, p, pal);
u1 = u;
v1 = v;
a1 = a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
YUVA_IN(y, u, v, a, p + BPP, pal);
u1 += u;
v1 += v;
a1 += a;
lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
cb++;
cr++;
p += 2 * BPP;
lum += 2;
}
if (w) {
YUVA_IN(y, u, v, a, p, pal);
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
p++;
lum++;
}
p += wrap3 - dstw * BPP;
lum += wrap - dstw - dstx;
cb += dst->linesize[1] - width2 - skip2;
cr += dst->linesize[2] - width2 - skip2;
}
for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
lum += dstx;
cb += skip2;
cr += skip2;
if (dstx & 1) {
YUVA_IN(y, u, v, a, p, pal);
u1 = u;
v1 = v;
a1 = a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
p += wrap3;
lum += wrap;
YUVA_IN(y, u, v, a, p, pal);
u1 += u;
v1 += v;
a1 += a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
cb++;
cr++;
p += -wrap3 + BPP;
lum += -wrap + 1;
}
for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
YUVA_IN(y, u, v, a, p, pal);
u1 = u;
v1 = v;
a1 = a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
YUVA_IN(y, u, v, a, p + BPP, pal);
u1 += u;
v1 += v;
a1 += a;
lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
p += wrap3;
lum += wrap;
YUVA_IN(y, u, v, a, p, pal);
u1 += u;
v1 += v;
a1 += a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
YUVA_IN(y, u, v, a, p + BPP, pal);
u1 += u;
v1 += v;
a1 += a;
lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
cb++;
cr++;
p += -wrap3 + 2 * BPP;
lum += -wrap + 2;
}
if (w) {
YUVA_IN(y, u, v, a, p, pal);
u1 = u;
v1 = v;
a1 = a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
p += wrap3;
lum += wrap;
YUVA_IN(y, u, v, a, p, pal);
u1 += u;
v1 += v;
a1 += a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
cb++;
cr++;
p += -wrap3 + BPP;
lum += -wrap + 1;
}
p += wrap3 + (wrap3 - dstw * BPP);
lum += wrap + (wrap - dstw - dstx);
cb += dst->linesize[1] - width2 - skip2;
cr += dst->linesize[2] - width2 - skip2;
}
/* handle odd height */
if (h) {
lum += dstx;
cb += skip2;
cr += skip2;
if (dstx & 1) {
YUVA_IN(y, u, v, a, p, pal);
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
cb++;
cr++;
lum++;
p += BPP;
}
for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
YUVA_IN(y, u, v, a, p, pal);
u1 = u;
v1 = v;
a1 = a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
YUVA_IN(y, u, v, a, p + BPP, pal);
u1 += u;
v1 += v;
a1 += a;
lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
cb++;
cr++;
p += 2 * BPP;
lum += 2;
}
if (w) {
YUVA_IN(y, u, v, a, p, pal);
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
}
}
}
static void free_subpicture(SubPicture *sp)
{
avsubtitle_free(&sp->sub);
}
static void calculate_display_rect(SDL_Rect *rect, int scr_xleft, int scr_ytop, int scr_width, int scr_height, VideoPicture *vp)
{
float aspect_ratio;
int width, height, x, y;
if (vp->sample_aspect_ratio.num == 0)
aspect_ratio = 0;
else
aspect_ratio = av_q2d(vp->sample_aspect_ratio);
if (aspect_ratio <= 0.0)
aspect_ratio = 1.0;
aspect_ratio *= (float)vp->width / (float)vp->height;
/* XXX: we suppose the screen has a 1.0 pixel ratio */
height = scr_height;
width = ((int)rint(height * aspect_ratio)) & ~1;
if (width > scr_width) {
width = scr_width;
height = ((int)rint(width / aspect_ratio)) & ~1;
}
x = (scr_width - width) / 2;
y = (scr_height - height) / 2;
rect->x = scr_xleft + x;
rect->y = scr_ytop + y;
rect->w = FFMAX(width, 1);
rect->h = FFMAX(height, 1);
}
static void video_image_display(VideoState *is)
{
VideoPicture *vp;
SubPicture *sp;
AVPicture pict;
SDL_Rect rect;
int i;
vp = &is->pictq[is->pictq_rindex];
if (vp->bmp) {
if (is->subtitle_st) {
if (is->subpq_size > 0) {
sp = &is->subpq[is->subpq_rindex];
if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
SDL_LockYUVOverlay (vp->bmp);
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];
for (i = 0; i < sp->sub.num_rects; i++)
blend_subrect(&pict, sp->sub.rects[i],
vp->bmp->w, vp->bmp->h);
SDL_UnlockYUVOverlay (vp->bmp);
}
}
}
calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp);
SDL_DisplayYUVOverlay(vp->bmp, &rect);
if (rect.x != is->last_display_rect.x || rect.y != is->last_display_rect.y || rect.w != is->last_display_rect.w || rect.h != is->last_display_rect.h || is->force_refresh) {
int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
is->last_display_rect = rect;
}
}
}
static inline int compute_mod(int a, int b)
{
return a < 0 ? a%b + b : 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;
int rdft_bits, nb_freq;
for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
;
nb_freq = 1 << (rdft_bits - 1);
/* compute display index : center on currently output samples */
channels = s->audio_tgt.channels;
nb_display_channels = channels;
if (!s->paused) {
int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
n = 2 * channels;
delay = s->audio_write_buf_size;
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_tgt.freq) / 1000000;
}
delay += 2 * data_used;
if (delay < data_used)
delay = data_used;
i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
if (s->show_mode == SHOW_MODE_WAVES) {
h = INT_MIN;
for (i = 0; i < 1000; i += channels) {
int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
int a = s->sample_array[idx];
int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
int score = a - d;
if (h < score && (b ^ c) < 0) {
h = score;
i_start = idx;
}
}
}
s->last_i_start = i_start;
} else {
i_start = s->last_i_start;
}
bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
if (s->show_mode == SHOW_MODE_WAVES) {
fill_rectangle(screen,
s->xleft, s->ytop, s->width, s->height,
bgcolor, 0);
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, 0);
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, 0);
}
SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
} else {
nb_display_channels= FFMIN(nb_display_channels, 2);
if (rdft_bits != s->rdft_bits) {
av_rdft_end(s->rdft);
av_free(s->rdft_data);
s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
s->rdft_bits = rdft_bits;
s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
}
{
FFTSample *data[2];
for (ch = 0; ch < nb_display_channels; ch++) {
data[ch] = s->rdft_data + 2 * nb_freq * ch;
i = i_start + ch;
for (x = 0; x < 2 * nb_freq; x++) {
double w = (x-nb_freq) * (1.0 / nb_freq);
data[ch][x] = s->sample_array[i] * (1.0 - w * w);
i += channels;
if (i >= SAMPLE_ARRAY_SIZE)
i -= SAMPLE_ARRAY_SIZE;
}
av_rdft_calc(s->rdft, data[ch]);
}
// least efficient way to do this, we should of course directly access it but its more than fast enough
for (y = 0; y < s->height; y++) {
double w = 1 / sqrt(nb_freq);
int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
+ data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
a = FFMIN(a, 255);
b = FFMIN(b, 255);
fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
fill_rectangle(screen,
s->xpos, s->height-y, 1, 1,
fgcolor, 0);
}
}
SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
if (!s->paused)
s->xpos++;
if (s->xpos >= s->width)
s->xpos= s->xleft;
}
}
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->read_tid, NULL);
SDL_WaitThread(is->refresh_tid, NULL);
packet_queue_destroy(&is->videoq);
packet_queue_destroy(&is->audioq);
packet_queue_destroy(&is->subtitleq);
/* free all pictures */
for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
vp = &is->pictq[i];
#if CONFIG_AVFILTER
avfilter_unref_bufferp(&vp->picref);
#endif
if (vp->bmp) {
SDL_FreeYUVOverlay(vp->bmp);
vp->bmp = NULL;
}
}
SDL_DestroyMutex(is->pictq_mutex);
SDL_DestroyCond(is->pictq_cond);
SDL_DestroyMutex(is->subpq_mutex);
SDL_DestroyCond(is->subpq_cond);
SDL_DestroyCond(is->continue_read_thread);
#if !CONFIG_AVFILTER
if (is->img_convert_ctx)
sws_freeContext(is->img_convert_ctx);
#endif
av_free(is);
}
static void do_exit(VideoState *is)
{
if (is) {
stream_close(is);
}
av_lockmgr_register(NULL);
uninit_opts();
#if CONFIG_AVFILTER
avfilter_uninit();
av_freep(&vfilters);
#endif
avformat_network_deinit();
if (show_status)
printf("\n");
SDL_Quit();
av_log(NULL, AV_LOG_QUIET, "%s", "");
exit(0);
}
static void sigterm_handler(int sig)
{
exit(123);
}
static int video_open(VideoState *is, int force_set_video_mode)
{
int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
int w,h;
VideoPicture *vp = &is->pictq[is->pictq_rindex];
SDL_Rect rect;
if (is_full_screen) flags |= SDL_FULLSCREEN;
else flags |= SDL_RESIZABLE;
if (is_full_screen && fs_screen_width) {
w = fs_screen_width;
h = fs_screen_height;
} else if (!is_full_screen && screen_width) {
w = screen_width;
h = screen_height;
} else if (vp->width) {
calculate_display_rect(&rect, 0, 0, INT_MAX, vp->height, vp);
w = rect.w;
h = rect.h;
} else {
w = 640;
h = 480;
}
if (screen && is->width == screen->w && screen->w == w
&& is->height== screen->h && screen->h == h && !force_set_video_mode)
return 0;
screen = SDL_SetVideoMode(w, h, 0, flags);
if (!screen) {
fprintf(stderr, "SDL: could not set video mode - exiting\n");
do_exit(is);
}
if (!window_title)
window_title = input_filename;
SDL_WM_SetCaption(window_title, window_title);
is->width = screen->w;
is->height = screen->h;
return 0;
}
/* display the current picture, if any */
static void video_display(VideoState *is)
{
if (!screen)
video_open(is, 0);
if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
video_audio_display(is);
else if (is->video_st)
video_image_display(is);
}
static int refresh_thread(void *opaque)
{
VideoState *is= opaque;
while (!is->abort_request) {
SDL_Event event;
event.type = FF_REFRESH_EVENT;
event.user.data1 = opaque;
if (!is->refresh && (!is->paused || is->force_refresh)) {
is->refresh = 1;
SDL_PushEvent(&event);
}
//FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
av_usleep(is->audio_st && is->show_mode != SHOW_MODE_VIDEO ? rdftspeed*1000 : 5000);
}
return 0;
}
/* get the current audio clock value */
static double get_audio_clock(VideoState *is)
{
if (is->paused) {
return is->audio_current_pts;
} else {
return is->audio_current_pts_drift + av_gettime() / 1000000.0;
}
}
/* get the current video clock value */
static double get_video_clock(VideoState *is)
{
if (is->paused) {
return is->video_current_pts;
} else {
return is->video_current_pts_drift + av_gettime() / 1000000.0;
}
}
/* get the current external clock value */
static double get_external_clock(VideoState *is)
{
if (is->paused) {
return is->external_clock;
} else {
double time = av_gettime() / 1000000.0;
return is->external_clock_drift + time - (time - is->external_clock_time / 1000000.0) * (1.0 - is->external_clock_speed);
}
}
static int get_master_sync_type(VideoState *is) {
if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
if (is->video_st)
return AV_SYNC_VIDEO_MASTER;
else
return AV_SYNC_AUDIO_MASTER;
} else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
if (is->audio_st)
return AV_SYNC_AUDIO_MASTER;
else
return AV_SYNC_EXTERNAL_CLOCK;
} else {
return AV_SYNC_EXTERNAL_CLOCK;
}
}
/* get the current master clock value */
static double get_master_clock(VideoState *is)
{
double val;
switch (get_master_sync_type(is)) {
case AV_SYNC_VIDEO_MASTER:
val = get_video_clock(is);
break;
case AV_SYNC_AUDIO_MASTER:
val = get_audio_clock(is);
break;
default:
val = get_external_clock(is);
break;
}
return val;
}
static void update_external_clock_pts(VideoState *is, double pts)
{
is->external_clock_time = av_gettime();
is->external_clock = pts;
is->external_clock_drift = pts - is->external_clock_time / 1000000.0;
}
static void check_external_clock_sync(VideoState *is, double pts) {
if (fabs(get_external_clock(is) - pts) > AV_NOSYNC_THRESHOLD) {
update_external_clock_pts(is, pts);
}
}
static void update_external_clock_speed(VideoState *is, double speed) {
update_external_clock_pts(is, get_external_clock(is));
is->external_clock_speed = speed;
}
static void check_external_clock_speed(VideoState *is) {
if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
update_external_clock_speed(is, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->external_clock_speed - EXTERNAL_CLOCK_SPEED_STEP));
} else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
(is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
update_external_clock_speed(is, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->external_clock_speed + EXTERNAL_CLOCK_SPEED_STEP));
} else {
double speed = is->external_clock_speed;
if (speed != 1.0)
update_external_clock_speed(is, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
}
}
/* seek in the stream */
static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
{
if (!is->seek_req) {
is->seek_pos = pos;
is->seek_rel = rel;
is->seek_flags &= ~AVSEEK_FLAG_BYTE;
if (seek_by_bytes)
is->seek_flags |= AVSEEK_FLAG_BYTE;
is->seek_req = 1;
}
}
/* pause or resume the video */
static void stream_toggle_pause(VideoState *is)
{
if (is->paused) {
is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
if (is->read_pause_return != AVERROR(ENOSYS)) {
is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
}
is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
}
update_external_clock_pts(is, get_external_clock(is));
is->paused = !is->paused;
}
static double compute_target_delay(double delay, VideoState *is)
{
double sync_threshold, diff;
/* update delay to follow master synchronisation source */
if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
/* if video is slave, we try to correct big delays by
duplicating or deleting a frame */
diff = get_video_clock(is) - get_master_clock(is);
/* 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 = FFMAX(AV_SYNC_THRESHOLD, delay);
if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
if (diff <= -sync_threshold)
delay = 0;
else if (diff >= sync_threshold)
delay = 2 * delay;
}
}
av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
delay, -diff);
return delay;
}
static void pictq_next_picture(VideoState *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);
}
static void pictq_prev_picture(VideoState *is) {
VideoPicture *prevvp;
/* update queue size and signal for the previous picture */
prevvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
if (prevvp->allocated && !prevvp->skip) {
SDL_LockMutex(is->pictq_mutex);
if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE - 1) {
if (--is->pictq_rindex == -1)
is->pictq_rindex = VIDEO_PICTURE_QUEUE_SIZE - 1;
is->pictq_size++;
}
SDL_CondSignal(is->pictq_cond);
SDL_UnlockMutex(is->pictq_mutex);
}
}
static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
double time = av_gettime() / 1000000.0;
/* update current video pts */
is->video_current_pts = pts;
is->video_current_pts_drift = is->video_current_pts - time;
is->video_current_pos = pos;
is->frame_last_pts = pts;
if (is->videoq.serial == serial)
check_external_clock_sync(is, is->video_current_pts);
}
/* called to display each frame */
static void video_refresh(void *opaque)
{
VideoState *is = opaque;
VideoPicture *vp;
double time;
SubPicture *sp, *sp2;
if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
check_external_clock_speed(is);
if (is->video_st) {
if (is->force_refresh)
pictq_prev_picture(is);
retry:
if (is->pictq_size == 0) {
SDL_LockMutex(is->pictq_mutex);
if (is->frame_last_dropped_pts != AV_NOPTS_VALUE && is->frame_last_dropped_pts > is->frame_last_pts) {
update_video_pts(is, is->frame_last_dropped_pts, is->frame_last_dropped_pos, 0);
is->frame_last_dropped_pts = AV_NOPTS_VALUE;
}
SDL_UnlockMutex(is->pictq_mutex);
// nothing to do, no picture to display in the que
} else {
double last_duration, duration, delay;
/* dequeue the picture */
vp = &is->pictq[is->pictq_rindex];
if (vp->skip) {
pictq_next_picture(is);
goto retry;
}
if (is->paused)
goto display;
/* compute nominal last_duration */
last_duration = vp->pts - is->frame_last_pts;
if (last_duration > 0 && last_duration < 10.0) {
/* if duration of the last frame was sane, update last_duration in video state */
is->frame_last_duration = last_duration;
}
delay = compute_target_delay(is->frame_last_duration, is);
time= av_gettime()/1000000.0;
if (time < is->frame_timer + delay)
return;
if (delay > 0)
is->frame_timer += delay * FFMAX(1, floor((time-is->frame_timer) / delay));
SDL_LockMutex(is->pictq_mutex);
update_video_pts(is, vp->pts, vp->pos, vp->serial);
SDL_UnlockMutex(is->pictq_mutex);
if (is->pictq_size > 1) {
VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
duration = nextvp->pts - vp->pts;
if((framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
is->frame_drops_late++;
pictq_next_picture(is);
goto retry;
}
}
if (is->subtitle_st) {
if (is->subtitle_stream_changed) {
SDL_LockMutex(is->subpq_mutex);
while (is->subpq_size) {
free_subpicture(&is->subpq[is->subpq_rindex]);
/* update queue size and signal for next picture */
if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
is->subpq_rindex = 0;
is->subpq_size--;
}
is->subtitle_stream_changed = 0;
SDL_CondSignal(is->subpq_cond);
SDL_UnlockMutex(is->subpq_mutex);
} else {
if (is->subpq_size > 0) {
sp = &is->subpq[is->subpq_rindex];
if (is->subpq_size > 1)
sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
else
sp2 = NULL;
if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
|| (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
{
free_subpicture(sp);
/* update queue size and signal for next picture */
if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
is->subpq_rindex = 0;
SDL_LockMutex(is->subpq_mutex);
is->subpq_size--;
SDL_CondSignal(is->subpq_cond);
SDL_UnlockMutex(is->subpq_mutex);
}
}
}
}
display:
/* display picture */
if (!display_disable)
video_display(is);
pictq_next_picture(is);
}
} else if (is->audio_st) {
/* draw the next audio frame */
/* if only audio stream, then display the audio bars (better
than nothing, just to test the implementation */
/* display picture */
if (!display_disable)
video_display(is);
}
is->force_refresh = 0;
if (show_status) {
static int64_t last_time;
int64_t cur_time;
int aqsize, vqsize, sqsize;
double av_diff;
cur_time = av_gettime();
if (!last_time || (cur_time - last_time) >= 30000) {
aqsize = 0;
vqsize = 0;
sqsize = 0;
if (is->audio_st)
aqsize = is->audioq.size;
if (is->video_st)
vqsize = is->videoq.size;
if (is->subtitle_st)
sqsize = is->subtitleq.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 fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r",
get_master_clock(is),
av_diff,
is->frame_drops_early + is->frame_drops_late,
aqsize / 1024,
vqsize / 1024,
sqsize,
is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
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(VideoState *is)
{
VideoPicture *vp;
vp = &is->pictq[is->pictq_windex];
if (vp->bmp)
SDL_FreeYUVOverlay(vp->bmp);
#if CONFIG_AVFILTER
avfilter_unref_bufferp(&vp->picref);
#endif
video_open(is, 0);
vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
SDL_YV12_OVERLAY,
screen);
if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
/* SDL allocates a buffer smaller than requested if the video
* overlay hardware is unable to support the requested size. */
fprintf(stderr, "Error: the video system does not support an image\n"
"size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
"to reduce the image size.\n", vp->width, vp->height );
do_exit(is);
}
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 pts1, int64_t pos, int serial)
{
VideoPicture *vp;
double frame_delay, pts = pts1;
/* compute the exact PTS for the picture if it is omitted in the stream
* pts1 is the dts of the pkt / pts of the frame */
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 = av_q2d(is->video_st->codec->time_base);
/* for MPEG2, the frame can be repeated, so we update the
clock accordingly */
frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
is->video_clock += frame_delay;
#if defined(DEBUG_SYNC) && 0
printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
av_get_picture_type_char(src_frame->pict_type), pts, pts1);
#endif
/* wait until we have space to put a new picture */
SDL_LockMutex(is->pictq_mutex);
/* keep the last already displayed picture in the queue */
while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 2 &&
!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];
#if CONFIG_AVFILTER
vp->sample_aspect_ratio = ((AVFilterBufferRef *)src_frame->opaque)->video->sample_aspect_ratio;
#else
vp->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, src_frame);
#endif
/* alloc or resize hardware picture buffer */
if (!vp->bmp || vp->reallocate || !vp->allocated ||
vp->width != src_frame->width ||
vp->height != src_frame->height) {
SDL_Event event;
vp->allocated = 0;
vp->reallocate = 0;
vp->width = src_frame->width;
vp->height = src_frame->height;
/* 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);
}
/* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
while (!vp->allocated) {
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) {
AVPicture pict = { { 0 } };
#if CONFIG_AVFILTER
avfilter_unref_bufferp(&vp->picref);
vp->picref = src_frame->opaque;
#endif
/* get a pointer on the bitmap */
SDL_LockYUVOverlay (vp->bmp);
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];
#if CONFIG_AVFILTER
// FIXME use direct rendering
av_picture_copy(&pict, (AVPicture *)src_frame,
src_frame->format, vp->width, vp->height);
#else
sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
vp->width, vp->height, src_frame->format, vp->width, vp->height,
AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
if (is->img_convert_ctx == NULL) {
fprintf(stderr, "Cannot initialize the conversion context\n");
exit(1);
}
sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
0, vp->height, pict.data, pict.linesize);
#endif
/* update the bitmap content */
SDL_UnlockYUVOverlay(vp->bmp);
vp->pts = pts;
vp->pos = pos;
vp->skip = 0;
vp->serial = serial;
/* 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;
}
static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt, int *serial)
{
int got_picture, i;
if (packet_queue_get(&is->videoq, pkt, 1, serial) < 0)
return -1;
if (pkt->data == flush_pkt.data) {
avcodec_flush_buffers(is->video_st->codec);
SDL_LockMutex(is->pictq_mutex);
// Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
is->pictq[i].skip = 1;
}
while (is->pictq_size && !is->videoq.abort_request) {
SDL_CondWait(is->pictq_cond, is->pictq_mutex);
}
is->video_current_pos = -1;
is->frame_last_pts = AV_NOPTS_VALUE;
is->frame_last_duration = 0;
is->frame_timer = (double)av_gettime() / 1000000.0;
is->frame_last_dropped_pts = AV_NOPTS_VALUE;
SDL_UnlockMutex(is->pictq_mutex);
return 0;
}
if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
return 0;
if (got_picture) {
int ret = 1;
if (decoder_reorder_pts == -1) {
*pts = av_frame_get_best_effort_timestamp(frame);
} else if (decoder_reorder_pts) {
*pts = frame->pkt_pts;
} else {
*pts = frame->pkt_dts;
}
if (*pts == AV_NOPTS_VALUE) {
*pts = 0;
}
if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
SDL_LockMutex(is->pictq_mutex);
if (is->frame_last_pts != AV_NOPTS_VALUE && *pts) {
double clockdiff = get_video_clock(is) - get_master_clock(is);
double dpts = av_q2d(is->video_st->time_base) * *pts;
double ptsdiff = dpts - is->frame_last_pts;
if (fabs(clockdiff) < AV_NOSYNC_THRESHOLD &&
ptsdiff > 0 && ptsdiff < AV_NOSYNC_THRESHOLD &&
clockdiff + ptsdiff - is->frame_last_filter_delay < 0) {
is->frame_last_dropped_pos = pkt->pos;
is->frame_last_dropped_pts = dpts;
is->frame_drops_early++;
ret = 0;
}
}
SDL_UnlockMutex(is->pictq_mutex);
}
return ret;
}
return 0;
}
#if CONFIG_AVFILTER
static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
{
int ret;
AVFilterInOut *outputs = NULL, *inputs = NULL;
if (filtergraph) {
outputs = avfilter_inout_alloc();
inputs = avfilter_inout_alloc();
if (!outputs || !inputs) {
ret = AVERROR(ENOMEM);
goto fail;
}
outputs->name = av_strdup("in");
outputs->filter_ctx = source_ctx;
outputs->pad_idx = 0;
outputs->next = NULL;
inputs->name = av_strdup("out");
inputs->filter_ctx = sink_ctx;
inputs->pad_idx = 0;
inputs->next = NULL;
if ((ret = avfilter_graph_parse(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
goto fail;
} else {
if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
goto fail;
}
ret = avfilter_graph_config(graph, NULL);
fail:
avfilter_inout_free(&outputs);
avfilter_inout_free(&inputs);
return ret;
}
static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
{
static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
char sws_flags_str[128];
char buffersrc_args[256];
int ret;
AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_crop;
AVCodecContext *codec = is->video_st->codec;
if (!buffersink_params)
return AVERROR(ENOMEM);
snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
graph->scale_sws_opts = av_strdup(sws_flags_str);
snprintf(buffersrc_args, sizeof(buffersrc_args),
"video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
codec->width, codec->height, codec->pix_fmt,
is->video_st->time_base.num, is->video_st->time_base.den,
codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
if ((ret = avfilter_graph_create_filter(&filt_src,
avfilter_get_by_name("buffer"),
"ffplay_buffer", buffersrc_args, NULL,
graph)) < 0)
goto fail;
buffersink_params->pixel_fmts = pix_fmts;
ret = avfilter_graph_create_filter(&filt_out,
avfilter_get_by_name("ffbuffersink"),
"ffplay_buffersink", NULL, buffersink_params, graph);
if (ret < 0)
goto fail;
/* SDL YUV code is not handling odd width/height for some driver
* combinations, therefore we crop the picture to an even width/height. */
if ((ret = avfilter_graph_create_filter(&filt_crop,
avfilter_get_by_name("crop"),
"ffplay_crop", "floor(in_w/2)*2:floor(in_h/2)*2", NULL, graph)) < 0)
goto fail;
if ((ret = avfilter_link(filt_crop, 0, filt_out, 0)) < 0)
goto fail;
if ((ret = configure_filtergraph(graph, vfilters, filt_src, filt_crop)) < 0)
goto fail;
is->in_video_filter = filt_src;
is->out_video_filter = filt_out;
fail:
av_freep(&buffersink_params);
return ret;
}
#endif /* CONFIG_AVFILTER */
static int video_thread(void *arg)
{
AVPacket pkt = { 0 };
VideoState *is = arg;
AVFrame *frame = avcodec_alloc_frame();
int64_t pts_int = AV_NOPTS_VALUE, pos = -1;
double pts;
int ret;
int serial = 0;
#if CONFIG_AVFILTER
AVCodecContext *codec = is->video_st->codec;
AVFilterGraph *graph = avfilter_graph_alloc();
AVFilterContext *filt_out = NULL, *filt_in = NULL;
int last_w = 0;
int last_h = 0;
enum AVPixelFormat last_format = -2;
if (codec->codec->capabilities & CODEC_CAP_DR1) {
is->use_dr1 = 1;
codec->get_buffer = codec_get_buffer;
codec->release_buffer = codec_release_buffer;
codec->opaque = &is->buffer_pool;
}
#endif
for (;;) {
#if CONFIG_AVFILTER
AVFilterBufferRef *picref;
AVRational tb;
#endif
while (is->paused && !is->videoq.abort_request)
SDL_Delay(10);
avcodec_get_frame_defaults(frame);
av_free_packet(&pkt);
ret = get_video_frame(is, frame, &pts_int, &pkt, &serial);
if (ret < 0)
goto the_end;
if (!ret)
continue;
#if CONFIG_AVFILTER
if ( last_w != is->video_st->codec->width
|| last_h != is->video_st->codec->height
|| last_format != is->video_st->codec->pix_fmt) {
av_log(NULL, AV_LOG_INFO, "Frame changed from size:%dx%d to size:%dx%d\n",
last_w, last_h, is->video_st->codec->width, is->video_st->codec->height);
avfilter_graph_free(&graph);
graph = avfilter_graph_alloc();
if ((ret = configure_video_filters(graph, is, vfilters)) < 0) {
SDL_Event event;
event.type = FF_QUIT_EVENT;
event.user.data1 = is;
SDL_PushEvent(&event);
av_free_packet(&pkt);
goto the_end;
}
filt_in = is->in_video_filter;
filt_out = is->out_video_filter;
last_w = is->video_st->codec->width;
last_h = is->video_st->codec->height;
last_format = is->video_st->codec->pix_fmt;
}
frame->pts = pts_int;
frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
if (is->use_dr1 && frame->opaque) {
FrameBuffer *buf = frame->opaque;
AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
frame->data, frame->linesize,
AV_PERM_READ | AV_PERM_PRESERVE,
frame->width, frame->height,
frame->format);
avfilter_copy_frame_props(fb, frame);
fb->buf->priv = buf;
fb->buf->free = filter_release_buffer;
buf->refcount++;
av_buffersrc_add_ref(filt_in, fb, AV_BUFFERSRC_FLAG_NO_COPY);
} else
av_buffersrc_write_frame(filt_in, frame);
av_free_packet(&pkt);
while (ret >= 0) {
is->frame_last_returned_time = av_gettime() / 1000000.0;
ret = av_buffersink_get_buffer_ref(filt_out, &picref, 0);
if (ret < 0) {
ret = 0;
break;
}
is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
is->frame_last_filter_delay = 0;
avfilter_copy_buf_props(frame, picref);
pts_int = picref->pts;
tb = filt_out->inputs[0]->time_base;
pos = picref->pos;
frame->opaque = picref;
if (av_cmp_q(tb, is->video_st->time_base)) {
av_unused int64_t pts1 = pts_int;
pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
av_dlog(NULL, "video_thread(): "
"tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
tb.num, tb.den, pts1,
is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
}
pts = pts_int * av_q2d(is->video_st->time_base);
ret = queue_picture(is, frame, pts, pos, serial);
}
#else
pts = pts_int * av_q2d(is->video_st->time_base);
ret = queue_picture(is, frame, pts, pkt.pos, serial);
#endif
if (ret < 0)
goto the_end;
if (is->step)
stream_toggle_pause(is);
}
the_end:
avcodec_flush_buffers(is->video_st->codec);
#if CONFIG_AVFILTER
avfilter_graph_free(&graph);
#endif
av_free_packet(&pkt);
avcodec_free_frame(&frame);
return 0;
}
static int subtitle_thread(void *arg)
{
VideoState *is = arg;
SubPicture *sp;
AVPacket pkt1, *pkt = &pkt1;
int got_subtitle;
double pts;
int i, j;
int r, g, b, y, u, v, a;
for (;;) {
while (is->paused && !is->subtitleq.abort_request) {
SDL_Delay(10);
}
if (packet_queue_get(&is->subtitleq, pkt, 1, NULL) < 0)
break;
if (pkt->data == flush_pkt.data) {
avcodec_flush_buffers(is->subtitle_st->codec);
continue;
}
SDL_LockMutex(is->subpq_mutex);
while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
!is->subtitleq.abort_request) {
SDL_CondWait(is->subpq_cond, is->subpq_mutex);
}
SDL_UnlockMutex(is->subpq_mutex);
if (is->subtitleq.abort_request)
return 0;
sp = &is->subpq[is->subpq_windex];
/* NOTE: ipts is the PTS of the _first_ picture beginning in
this packet, if any */
pts = 0;
if (pkt->pts != AV_NOPTS_VALUE)
pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
&got_subtitle, pkt);
if (got_subtitle && sp->sub.format == 0) {
if (sp->sub.pts != AV_NOPTS_VALUE)
pts = sp->sub.pts / (double)AV_TIME_BASE;
sp->pts = pts;
for (i = 0; i < sp->sub.num_rects; i++)
{
for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
{
RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
y = RGB_TO_Y_CCIR(r, g, b);
u = RGB_TO_U_CCIR(r, g, b, 0);
v = RGB_TO_V_CCIR(r, g, b, 0);
YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
}
}
/* now we can update the picture count */
if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
is->subpq_windex = 0;
SDL_LockMutex(is->subpq_mutex);
is->subpq_size++;
SDL_UnlockMutex(is->subpq_mutex);
}
av_free_packet(pkt);
}
return 0;
}
/* copy samples for viewing in editor window */
static void update_sample_display(VideoState *is, short *samples, int samples_size)
{
int size, len;
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 wanted number of samples to get better sync if sync_type is video
* or external master clock */
static int synchronize_audio(VideoState *is, int nb_samples)
{
int wanted_nb_samples = nb_samples;
/* if not master, then we try to remove or add samples to correct the clock */
if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
double diff, avg_diff;
int min_nb_samples, max_nb_samples;
diff = get_audio_clock(is) - get_master_clock(is);
if (fabs(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_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
}
av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
diff, avg_diff, wanted_nb_samples - nb_samples,
is->audio_clock, is->video_clock, is->audio_diff_threshold);
}
} 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 wanted_nb_samples;
}
/* decode one audio frame and returns its uncompressed size */
static int audio_decode_frame(VideoState *is, double *pts_ptr)
{
AVPacket *pkt_temp = &is->audio_pkt_temp;
AVPacket *pkt = &is->audio_pkt;
AVCodecContext *dec = is->audio_st->codec;
int len1, len2, data_size, resampled_data_size;
int64_t dec_channel_layout;
int got_frame;
double pts;
int new_packet = 0;
int flush_complete = 0;
int wanted_nb_samples;
for (;;) {
/* NOTE: the audio packet can contain several frames */
while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
if (!is->frame) {
if (!(is->frame = avcodec_alloc_frame()))
return AVERROR(ENOMEM);
} else
avcodec_get_frame_defaults(is->frame);
if (is->paused)
return -1;
if (flush_complete)
break;
new_packet = 0;
len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
if (len1 < 0) {
/* if error, we skip the frame */
pkt_temp->size = 0;
break;
}
pkt_temp->data += len1;
pkt_temp->size -= len1;
if (!got_frame) {
/* stop sending empty packets if the decoder is finished */
if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
flush_complete = 1;
continue;
}
data_size = av_samples_get_buffer_size(NULL, is->frame->channels,
is->frame->nb_samples,
is->frame->format, 1);
dec_channel_layout =
(is->frame->channel_layout && is->frame->channels == av_get_channel_layout_nb_channels(is->frame->channel_layout)) ?
is->frame->channel_layout : av_get_default_channel_layout(is->frame->channels);
wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
if (is->frame->format != is->audio_src.fmt ||
dec_channel_layout != is->audio_src.channel_layout ||
is->frame->sample_rate != is->audio_src.freq ||
(wanted_nb_samples != is->frame->nb_samples && !is->swr_ctx)) {
swr_free(&is->swr_ctx);
is->swr_ctx = swr_alloc_set_opts(NULL,
is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
dec_channel_layout, is->frame->format, is->frame->sample_rate,
0, NULL);
if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
fprintf(stderr, "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
is->frame->sample_rate, av_get_sample_fmt_name(is->frame->format), (int)is->frame->channels,
is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
break;
}
is->audio_src.channel_layout = dec_channel_layout;
is->audio_src.channels = is->frame->channels;
is->audio_src.freq = is->frame->sample_rate;
is->audio_src.fmt = is->frame->format;
}
if (is->swr_ctx) {
const uint8_t **in = (const uint8_t **)is->frame->extended_data;
uint8_t *out[] = {is->audio_buf2};
int out_count = sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt);
if (wanted_nb_samples != is->frame->nb_samples) {
if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / is->frame->sample_rate,
wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate) < 0) {
fprintf(stderr, "swr_set_compensation() failed\n");
break;
}
}
len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples);
if (len2 < 0) {
fprintf(stderr, "swr_convert() failed\n");
break;
}
if (len2 == out_count) {
fprintf(stderr, "warning: audio buffer is probably too small\n");
swr_init(is->swr_ctx);
}
is->audio_buf = is->audio_buf2;
resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
} else {
is->audio_buf = is->frame->data[0];
resampled_data_size = data_size;
}
/* if no pts, then compute it */
pts = is->audio_clock;
*pts_ptr = pts;
is->audio_clock += (double)data_size /
(is->frame->channels * is->frame->sample_rate * av_get_bytes_per_sample(is->frame->format));
#ifdef DEBUG
{
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 resampled_data_size;
}
/* free the current packet */
if (pkt->data)
av_free_packet(pkt);
memset(pkt_temp, 0, sizeof(*pkt_temp));
if (is->paused || is->audioq.abort_request) {
return -1;
}
if (is->audioq.nb_packets == 0)
SDL_CondSignal(is->continue_read_thread);
/* read next packet */
if ((new_packet = packet_queue_get(&is->audioq, pkt, 1, &is->audio_pkt_temp_serial)) < 0)
return -1;
if (pkt->data == flush_pkt.data) {
avcodec_flush_buffers(dec);
flush_complete = 0;
}
*pkt_temp = *pkt;
/* if update the audio clock with the pts */
if (pkt->pts != AV_NOPTS_VALUE) {
is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
}
}
}
/* prepare a new audio buffer */
static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
{
VideoState *is = opaque;
int audio_size, len1;
int bytes_per_sec;
int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
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, &pts);
if (audio_size < 0) {
/* if error, just output silence */
is->audio_buf = is->silence_buf;
is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
} else {
if (is->show_mode != SHOW_MODE_VIDEO)
update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
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;
}
bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
/* Let's assume the audio driver that is used by SDL has two periods. */
is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec;
is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
if (is->audioq.serial == is->audio_pkt_temp_serial)
check_external_clock_sync(is, is->audio_current_pts);
}
static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
{
SDL_AudioSpec wanted_spec, spec;
const char *env;
const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
env = SDL_getenv("SDL_AUDIO_CHANNELS");
if (env) {
wanted_nb_channels = atoi(env);
wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
}
if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
}
wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
wanted_spec.freq = wanted_sample_rate;
if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
fprintf(stderr, "Invalid sample rate or channel count!\n");
return -1;
}
wanted_spec.format = AUDIO_S16SYS;
wanted_spec.silence = 0;
wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
wanted_spec.callback = sdl_audio_callback;
wanted_spec.userdata = opaque;
while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
fprintf(stderr, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
if (!wanted_spec.channels) {
fprintf(stderr, "No more channel combinations to try, audio open failed\n");
return -1;
}
wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
}
if (spec.format != AUDIO_S16SYS) {
fprintf(stderr, "SDL advised audio format %d is not supported!\n", spec.format);
return -1;
}
if (spec.channels != wanted_spec.channels) {
wanted_channel_layout = av_get_default_channel_layout(spec.channels);
if (!wanted_channel_layout) {
fprintf(stderr, "SDL advised channel count %d is not supported!\n", spec.channels);
return -1;
}
}
audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
audio_hw_params->freq = spec.freq;
audio_hw_params->channel_layout = wanted_channel_layout;
audio_hw_params->channels = spec.channels;
return spec.size;
}
/* open a given stream. Return 0 if OK */
static int stream_component_open(VideoState *is, int stream_index)
{
AVFormatContext *ic = is->ic;
AVCodecContext *avctx;
AVCodec *codec;
AVDictionary *opts;
AVDictionaryEntry *t = NULL;
if (stream_index < 0 || stream_index >= ic->nb_streams)
return -1;
avctx = ic->streams[stream_index]->codec;
codec = avcodec_find_decoder(avctx->codec_id);
switch(avctx->codec_type){
case AVMEDIA_TYPE_AUDIO : is->last_audio_stream = stream_index; if(audio_codec_name ) codec= avcodec_find_decoder_by_name( audio_codec_name); break;
case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; if(subtitle_codec_name) codec= avcodec_find_decoder_by_name(subtitle_codec_name); break;
case AVMEDIA_TYPE_VIDEO : is->last_video_stream = stream_index; if(video_codec_name ) codec= avcodec_find_decoder_by_name( video_codec_name); break;
}
if (!codec)
return -1;
avctx->workaround_bugs = workaround_bugs;
avctx->lowres = lowres;
if(avctx->lowres > codec->max_lowres){
av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
codec->max_lowres);
avctx->lowres= codec->max_lowres;
}
avctx->idct_algo = idct;
avctx->skip_frame = skip_frame;
avctx->skip_idct = skip_idct;
avctx->skip_loop_filter = skip_loop_filter;
avctx->error_concealment = error_concealment;
if(avctx->lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
if (fast) avctx->flags2 |= CODEC_FLAG2_FAST;
if(codec->capabilities & CODEC_CAP_DR1)
avctx->flags |= CODEC_FLAG_EMU_EDGE;
opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
if (!av_dict_get(opts, "threads", NULL, 0))
av_dict_set(&opts, "threads", "auto", 0);
if (avcodec_open2(avctx, codec, &opts) < 0)
return -1;
if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
return AVERROR_OPTION_NOT_FOUND;
}
/* prepare audio output */
if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
int audio_hw_buf_size = audio_open(is, avctx->channel_layout, avctx->channels, avctx->sample_rate, &is->audio_src);
if (audio_hw_buf_size < 0)
return -1;
is->audio_hw_buf_size = audio_hw_buf_size;
is->audio_tgt = is->audio_src;
}
ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
switch (avctx->codec_type) {
case AVMEDIA_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 * is->audio_hw_buf_size / av_samples_get_buffer_size(NULL, is->audio_tgt.channels, is->audio_tgt.freq, is->audio_tgt.fmt, 1);
memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
packet_queue_start(&is->audioq);
SDL_PauseAudio(0);
break;
case AVMEDIA_TYPE_VIDEO:
is->video_stream = stream_index;
is->video_st = ic->streams[stream_index];
packet_queue_start(&is->videoq);
is->video_tid = SDL_CreateThread(video_thread, is);
break;
case AVMEDIA_TYPE_SUBTITLE:
is->subtitle_stream = stream_index;
is->subtitle_st = ic->streams[stream_index];
packet_queue_start(&is->subtitleq);
is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
break;
default:
break;
}
return 0;
}
static void stream_component_close(VideoState *is, int stream_index)
{
AVFormatContext *ic = is->ic;
AVCodecContext *avctx;
if (stream_index < 0 || stream_index >= ic->nb_streams)
return;
avctx = ic->streams[stream_index]->codec;
switch (avctx->codec_type) {
case AVMEDIA_TYPE_AUDIO:
packet_queue_abort(&is->audioq);
SDL_CloseAudio();
packet_queue_flush(&is->audioq);
av_free_packet(&is->audio_pkt);
swr_free(&is->swr_ctx);
av_freep(&is->audio_buf1);
is->audio_buf = NULL;
avcodec_free_frame(&is->frame);
if (is->rdft) {
av_rdft_end(is->rdft);
av_freep(&is->rdft_data);
is->rdft = NULL;
is->rdft_bits = 0;
}
break;
case AVMEDIA_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_flush(&is->videoq);
break;
case AVMEDIA_TYPE_SUBTITLE:
packet_queue_abort(&is->subtitleq);
/* note: we also signal this mutex to make sure we deblock the
video thread in all cases */
SDL_LockMutex(is->subpq_mutex);
is->subtitle_stream_changed = 1;
SDL_CondSignal(is->subpq_cond);
SDL_UnlockMutex(is->subpq_mutex);
SDL_WaitThread(is->subtitle_tid, NULL);
packet_queue_flush(&is->subtitleq);
break;
default:
break;
}
ic->streams[stream_index]->discard = AVDISCARD_ALL;
avcodec_close(avctx);
#if CONFIG_AVFILTER
free_buffer_pool(&is->buffer_pool);
#endif
switch (avctx->codec_type) {
case AVMEDIA_TYPE_AUDIO:
is->audio_st = NULL;
is->audio_stream = -1;
break;
case AVMEDIA_TYPE_VIDEO:
is->video_st = NULL;
is->video_stream = -1;
break;
case AVMEDIA_TYPE_SUBTITLE:
is->subtitle_st = NULL;
is->subtitle_stream = -1;
break;
default:
break;
}
}
static int decode_interrupt_cb(void *ctx)
{
VideoState *is = ctx;
return is->abort_request;
}
static int is_realtime(AVFormatContext *s)
{
if( !strcmp(s->iformat->name, "rtp")
|| !strcmp(s->iformat->name, "rtsp")
|| !strcmp(s->iformat->name, "sdp")
)
return 1;
if(s->pb && ( !strncmp(s->filename, "rtp:", 4)
|| !strncmp(s->filename, "udp:", 4)
)
)
return 1;
return 0;
}
/* this thread gets the stream from the disk or the network */
static int read_thread(void *arg)
{
VideoState *is = arg;
AVFormatContext *ic = NULL;
int err, i, ret;
int st_index[AVMEDIA_TYPE_NB];
AVPacket pkt1, *pkt = &pkt1;
int eof = 0;
int pkt_in_play_range = 0;
AVDictionaryEntry *t;
AVDictionary **opts;
int orig_nb_streams;
SDL_mutex *wait_mutex = SDL_CreateMutex();
memset(st_index, -1, sizeof(st_index));
is->last_video_stream = is->video_stream = -1;
is->last_audio_stream = is->audio_stream = -1;
is->last_subtitle_stream = is->subtitle_stream = -1;
ic = avformat_alloc_context();
ic->interrupt_callback.callback = decode_interrupt_cb;
ic->interrupt_callback.opaque = is;
err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
if (err < 0) {
print_error(is->filename, err);
ret = -1;
goto fail;
}
if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
ret = AVERROR_OPTION_NOT_FOUND;
goto fail;
}
is->ic = ic;
if (genpts)
ic->flags |= AVFMT_FLAG_GENPTS;
opts = setup_find_stream_info_opts(ic, codec_opts);
orig_nb_streams = ic->nb_streams;
err = avformat_find_stream_info(ic, opts);
if (err < 0) {
fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
ret = -1;
goto fail;
}
for (i = 0; i < orig_nb_streams; i++)
av_dict_free(&opts[i]);
av_freep(&opts);
if (ic->pb)
ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
if (seek_by_bytes < 0)
seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
/* 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 = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
if (ret < 0) {
fprintf(stderr, "%s: could not seek to position %0.3f\n",
is->filename, (double)timestamp / AV_TIME_BASE);
}
}
is->realtime = is_realtime(ic);
for (i = 0; i < ic->nb_streams; i++)
ic->streams[i]->discard = AVDISCARD_ALL;
if (!video_disable)
st_index[AVMEDIA_TYPE_VIDEO] =
av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
if (!audio_disable)
st_index[AVMEDIA_TYPE_AUDIO] =
av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
wanted_stream[AVMEDIA_TYPE_AUDIO],
st_index[AVMEDIA_TYPE_VIDEO],
NULL, 0);
if (!video_disable)
st_index[AVMEDIA_TYPE_SUBTITLE] =
av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
wanted_stream[AVMEDIA_TYPE_SUBTITLE],
(st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
st_index[AVMEDIA_TYPE_AUDIO] :
st_index[AVMEDIA_TYPE_VIDEO]),
NULL, 0);
if (show_status) {
av_dump_format(ic, 0, is->filename, 0);
}
is->show_mode = show_mode;
/* open the streams */
if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
}
ret = -1;
if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
}
is->refresh_tid = SDL_CreateThread(refresh_thread, is);
if (is->show_mode == SHOW_MODE_NONE)
is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
}
if (is->video_stream < 0 && is->audio_stream < 0) {
fprintf(stderr, "%s: could not open codecs\n", is->filename);
ret = -1;
goto fail;
}
if (infinite_buffer < 0 && is->realtime)
infinite_buffer = 1;
for (;;) {
if (is->abort_request)
break;
if (is->paused != is->last_paused) {
is->last_paused = is->paused;
if (is->paused)
is->read_pause_return = av_read_pause(ic);
else
av_read_play(ic);
}
#if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
if (is->paused &&
(!strcmp(ic->iformat->name, "rtsp") ||
(ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
/* wait 10 ms to avoid trying to get another packet */
/* XXX: horrible */
SDL_Delay(10);
continue;
}
#endif
if (is->seek_req) {
int64_t seek_target = is->seek_pos;
int64_t seek_min = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
int64_t seek_max = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
// FIXME the +-2 is due to rounding being not done in the correct direction in generation
// of the seek_pos/seek_rel variables
ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
if (ret < 0) {
fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
} else {
if (is->audio_stream >= 0) {
packet_queue_flush(&is->audioq);
packet_queue_put(&is->audioq, &flush_pkt);
}
if (is->subtitle_stream >= 0) {
packet_queue_flush(&is->subtitleq);
packet_queue_put(&is->subtitleq, &flush_pkt);
}
if (is->video_stream >= 0) {
packet_queue_flush(&is->videoq);
packet_queue_put(&is->videoq, &flush_pkt);
}
}
update_external_clock_pts(is, (seek_target + ic->start_time) / (double)AV_TIME_BASE);
is->seek_req = 0;
eof = 0;
}
if (is->que_attachments_req) {
avformat_queue_attached_pictures(ic);
is->que_attachments_req = 0;
}
/* if the queue are full, no need to read more */
if (infinite_buffer<1 &&
(is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
|| ( (is->audioq .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
&& (is->videoq .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request)
&& (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
/* wait 10 ms */
SDL_LockMutex(wait_mutex);
SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
SDL_UnlockMutex(wait_mutex);
continue;
}
if (eof) {
if (is->video_stream >= 0) {
av_init_packet(pkt);
pkt->data = NULL;
pkt->size = 0;
pkt->stream_index = is->video_stream;
packet_queue_put(&is->videoq, pkt);
}
if (is->audio_stream >= 0 &&
is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
av_init_packet(pkt);
pkt->data = NULL;
pkt->size = 0;
pkt->stream_index = is->audio_stream;
packet_queue_put(&is->audioq, pkt);
}
SDL_Delay(10);
if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
if (loop != 1 && (!loop || --loop)) {
stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
} else if (autoexit) {
ret = AVERROR_EOF;
goto fail;
}
}
eof=0;
continue;
}
ret = av_read_frame(ic, pkt);
if (ret < 0) {
if (ret == AVERROR_EOF || url_feof(ic->pb))
eof = 1;
if (ic->pb && ic->pb->error)
break;
SDL_LockMutex(wait_mutex);
SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
SDL_UnlockMutex(wait_mutex);
continue;
}
/* check if packet is in play range specified by user, then queue, otherwise discard */
pkt_in_play_range = duration == AV_NOPTS_VALUE ||
(pkt->pts - ic->streams[pkt->stream_index]->start_time) *
av_q2d(ic->streams[pkt->stream_index]->time_base) -
(double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
<= ((double)duration / 1000000);
if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
packet_queue_put(&is->audioq, pkt);
} else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
packet_queue_put(&is->videoq, pkt);
} else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
packet_queue_put(&is->subtitleq, pkt);
} else {
av_free_packet(pkt);
}
}
/* wait until the end */
while (!is->abort_request) {
SDL_Delay(100);
}
ret = 0;
fail:
/* 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->subtitle_stream >= 0)
stream_component_close(is, is->subtitle_stream);
if (is->ic) {
avformat_close_input(&is->ic);
}
if (ret != 0) {
SDL_Event event;
event.type = FF_QUIT_EVENT;
event.user.data1 = is;
SDL_PushEvent(&event);
}
SDL_DestroyMutex(wait_mutex);
return 0;
}
static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
{
VideoState *is;
is = av_mallocz(sizeof(VideoState));
if (!is)
return NULL;
av_strlcpy(is->filename, filename, sizeof(is->filename));
is->iformat = iformat;
is->ytop = 0;
is->xleft = 0;
/* start video display */
is->pictq_mutex = SDL_CreateMutex();
is->pictq_cond = SDL_CreateCond();
is->subpq_mutex = SDL_CreateMutex();
is->subpq_cond = SDL_CreateCond();
packet_queue_init(&is->videoq);
packet_queue_init(&is->audioq);
packet_queue_init(&is->subtitleq);
is->continue_read_thread = SDL_CreateCond();
update_external_clock_pts(is, 0.0);
update_external_clock_speed(is, 1.0);
is->audio_current_pts_drift = -av_gettime() / 1000000.0;
is->video_current_pts_drift = is->audio_current_pts_drift;
is->av_sync_type = av_sync_type;
is->read_tid = SDL_CreateThread(read_thread, is);
if (!is->read_tid) {
av_free(is);
return NULL;
}
return is;
}
static void stream_cycle_channel(VideoState *is, int codec_type)
{
AVFormatContext *ic = is->ic;
int start_index, stream_index;
int old_index;
AVStream *st;
if (codec_type == AVMEDIA_TYPE_VIDEO) {
start_index = is->last_video_stream;
old_index = is->video_stream;
} else if (codec_type == AVMEDIA_TYPE_AUDIO) {
start_index = is->last_audio_stream;
old_index = is->audio_stream;
} else {
start_index = is->last_subtitle_stream;
old_index = is->subtitle_stream;
}
stream_index = start_index;
for (;;) {
if (++stream_index >= is->ic->nb_streams)
{
if (codec_type == AVMEDIA_TYPE_SUBTITLE)
{
stream_index = -1;
is->last_subtitle_stream = -1;
goto the_end;
}
if (start_index == -1)
return;
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 AVMEDIA_TYPE_AUDIO:
if (st->codec->sample_rate != 0 &&
st->codec->channels != 0)
goto the_end;
break;
case AVMEDIA_TYPE_VIDEO:
case AVMEDIA_TYPE_SUBTITLE:
goto the_end;
default:
break;
}
}
}
the_end:
stream_component_close(is, old_index);
stream_component_open(is, stream_index);
if (codec_type == AVMEDIA_TYPE_VIDEO)
is->que_attachments_req = 1;
}
static void toggle_full_screen(VideoState *is)
{
#if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
/* OS X needs to reallocate the SDL overlays */
int i;
for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
is->pictq[i].reallocate = 1;
#endif
is_full_screen = !is_full_screen;
video_open(is, 1);
}
static void toggle_pause(VideoState *is)
{
stream_toggle_pause(is);
is->step = 0;
}
static void step_to_next_frame(VideoState *is)
{
/* if the stream is paused unpause it, then step */
if (is->paused)
stream_toggle_pause(is);
is->step = 1;
}
static void toggle_audio_display(VideoState *is)
{
int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
is->show_mode = (is->show_mode + 1) % SHOW_MODE_NB;
fill_rectangle(screen,
is->xleft, is->ytop, is->width, is->height,
bgcolor, 1);
}
/* handle an event sent by the GUI */
static void event_loop(VideoState *cur_stream)
{
SDL_Event event;
double incr, pos, frac;
for (;;) {
double x;
SDL_WaitEvent(&event);
switch (event.type) {
case SDL_KEYDOWN:
if (exit_on_keydown) {
do_exit(cur_stream);
break;
}
switch (event.key.keysym.sym) {
case SDLK_ESCAPE:
case SDLK_q:
do_exit(cur_stream);
break;
case SDLK_f:
toggle_full_screen(cur_stream);
cur_stream->force_refresh = 1;
break;
case SDLK_p:
case SDLK_SPACE:
toggle_pause(cur_stream);
break;
case SDLK_s: // S: Step to next frame
step_to_next_frame(cur_stream);
break;
case SDLK_a:
stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
break;
case SDLK_v:
stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
break;
case SDLK_t:
stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
break;
case SDLK_w:
toggle_audio_display(cur_stream);
cur_stream->force_refresh = 1;
break;
case SDLK_PAGEUP:
incr = 600.0;
goto do_seek;
case SDLK_PAGEDOWN:
incr = -600.0;
goto do_seek;
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 (seek_by_bytes) {
if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
pos = cur_stream->video_current_pos;
} else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
pos = cur_stream->audio_pkt.pos;
} else
pos = avio_tell(cur_stream->ic->pb);
if (cur_stream->ic->bit_rate)
incr *= cur_stream->ic->bit_rate / 8.0;
else
incr *= 180000.0;
pos += incr;
stream_seek(cur_stream, pos, incr, 1);
} else {
pos = get_master_clock(cur_stream);
pos += incr;
if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
}
break;
default:
break;
}
break;
case SDL_VIDEOEXPOSE:
cur_stream->force_refresh = 1;
break;
case SDL_MOUSEBUTTONDOWN:
if (exit_on_mousedown) {
do_exit(cur_stream);
break;
}
case SDL_MOUSEMOTION:
if (event.type == SDL_MOUSEBUTTONDOWN) {
x = event.button.x;
} else {
if (event.motion.state != SDL_PRESSED)
break;
x = event.motion.x;
}
if (seek_by_bytes || cur_stream->ic->duration <= 0) {
uint64_t size = avio_size(cur_stream->ic->pb);
stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
} else {
int64_t ts;
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 = x / 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);
ts = frac * cur_stream->ic->duration;
if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
ts += cur_stream->ic->start_time;
stream_seek(cur_stream, ts, 0, 0);
}
break;
case SDL_VIDEORESIZE:
screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
screen_width = cur_stream->width = event.resize.w;
screen_height = cur_stream->height = event.resize.h;
cur_stream->force_refresh = 1;
break;
case SDL_QUIT:
case FF_QUIT_EVENT:
do_exit(cur_stream);
break;
case FF_ALLOC_EVENT:
alloc_picture(event.user.data1);
break;
case FF_REFRESH_EVENT:
video_refresh(event.user.data1);
cur_stream->refresh = 0;
break;
default:
break;
}
}
}
static int opt_frame_size(void *optctx, const char *opt, const char *arg)
{
av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
return opt_default(NULL, "video_size", arg);
}
static int opt_width(void *optctx, const char *opt, const char *arg)
{
screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
return 0;
}
static int opt_height(void *optctx, const char *opt, const char *arg)
{
screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
return 0;
}
static int opt_format(void *optctx, const char *opt, const char *arg)
{
file_iformat = av_find_input_format(arg);
if (!file_iformat) {
fprintf(stderr, "Unknown input format: %s\n", arg);
return AVERROR(EINVAL);
}
return 0;
}
static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
{
av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
return opt_default(NULL, "pixel_format", arg);
}
static int opt_sync(void *optctx, const char *opt, 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 {
fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
exit(1);
}
return 0;
}
static int opt_seek(void *optctx, const char *opt, const char *arg)
{
start_time = parse_time_or_die(opt, arg, 1);
return 0;
}
static int opt_duration(void *optctx, const char *opt, const char *arg)
{
duration = parse_time_or_die(opt, arg, 1);
return 0;
}
static int opt_show_mode(void *optctx, const char *opt, const char *arg)
{
show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
!strcmp(arg, "waves") ? SHOW_MODE_WAVES :
!strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT :
parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
return 0;
}
static void opt_input_file(void *optctx, const char *filename)
{
if (input_filename) {
fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
filename, input_filename);
exit(1);
}
if (!strcmp(filename, "-"))
filename = "pipe:";
input_filename = filename;
}
static int opt_codec(void *o, const char *opt, const char *arg)
{
switch(opt[strlen(opt)-1]){
case 'a' : audio_codec_name = arg; break;
case 's' : subtitle_codec_name = arg; break;
case 'v' : video_codec_name = arg; break;
}
return 0;
}
static int dummy;
static const OptionDef options[] = {
#include "cmdutils_common_opts.h"
{ "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
{ "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
{ "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
{ "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
{ "an", OPT_BOOL, { &audio_disable }, "disable audio" },
{ "vn", OPT_BOOL, { &video_disable }, "disable video" },
{ "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
{ "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
{ "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
{ "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
{ "t", HAS_ARG, { .func_arg = opt_duration }, "play \"duration\" seconds of audio/video", "duration" },
{ "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
{ "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
{ "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
{ "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
{ "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
{ "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" },
{ "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
{ "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
{ "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
{ "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
{ "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_loop_filter }, "", "" },
{ "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_frame }, "", "" },
{ "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_idct }, "", "" },
{ "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { &idct }, "set idct algo", "algo" },
{ "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options", "bit_mask" },
{ "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
{ "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
{ "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
{ "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
{ "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
{ "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
{ "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
{ "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
#if CONFIG_AVFILTER
{ "vf", OPT_STRING | HAS_ARG, { &vfilters }, "video filters", "filter list" },
#endif
{ "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
{ "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
{ "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
{ "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
{ "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder" },
{ NULL, },
};
static void show_usage(void)
{
av_log(NULL, AV_LOG_INFO, "Simple media player\n");
av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
av_log(NULL, AV_LOG_INFO, "\n");
}
void show_help_default(const char *opt, const char *arg)
{
av_log_set_callback(log_callback_help);
show_usage();
show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
printf("\n");
show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
#if !CONFIG_AVFILTER
show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
#else
show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
#endif
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"
"t cycle subtitle channel\n"
"w show audio waves\n"
"s activate frame-step mode\n"
"left/right seek backward/forward 10 seconds\n"
"down/up seek backward/forward 1 minute\n"
"page down/page up seek backward/forward 10 minutes\n"
"mouse click seek to percentage in file corresponding to fraction of width\n"
);
}
static int lockmgr(void **mtx, enum AVLockOp op)
{
switch(op) {
case AV_LOCK_CREATE:
*mtx = SDL_CreateMutex();
if(!*mtx)
return 1;
return 0;
case AV_LOCK_OBTAIN:
return !!SDL_LockMutex(*mtx);
case AV_LOCK_RELEASE:
return !!SDL_UnlockMutex(*mtx);
case AV_LOCK_DESTROY:
SDL_DestroyMutex(*mtx);
return 0;
}
return 1;
}
/* Called from the main */
int main(int argc, char **argv)
{
int flags;
VideoState *is;
char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
av_log_set_flags(AV_LOG_SKIP_REPEATED);
parse_loglevel(argc, argv, options);
/* register all codecs, demux and protocols */
avcodec_register_all();
#if CONFIG_AVDEVICE
avdevice_register_all();
#endif
#if CONFIG_AVFILTER
avfilter_register_all();
#endif
av_register_all();
avformat_network_init();
init_opts();
signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
show_banner(argc, argv, options);
parse_options(NULL, argc, argv, options, opt_input_file);
if (!input_filename) {
show_usage();
fprintf(stderr, "An input file must be specified\n");
fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
exit(1);
}
if (display_disable) {
video_disable = 1;
}
flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
if (audio_disable)
flags &= ~SDL_INIT_AUDIO;
if (display_disable)
SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
#if !defined(__MINGW32__) && !defined(__APPLE__)
flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
#endif
if (SDL_Init (flags)) {
fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
fprintf(stderr, "(Did you set the DISPLAY variable?)\n");
exit(1);
}
if (!display_disable) {
#if HAVE_SDL_VIDEO_SIZE
const SDL_VideoInfo *vi = SDL_GetVideoInfo();
fs_screen_width = vi->current_w;
fs_screen_height = vi->current_h;
#endif
}
SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
if (av_lockmgr_register(lockmgr)) {
fprintf(stderr, "Could not initialize lock manager!\n");
do_exit(NULL);
}
av_init_packet(&flush_pkt);
flush_pkt.data = (char *)(intptr_t)"FLUSH";
is = stream_open(input_filename, file_iformat);
if (!is) {
fprintf(stderr, "Failed to initialize VideoState!\n");
do_exit(NULL);
}
event_loop(is);
/* never returns */
return 0;
}