Google Git
Sign in
nest-open-source / manifest_repos / ffmpeg / d18a1ff1ee3408962332c59ed996699166c5570d / . / fftools / ffplay.c
blob: 9ff0425163ec3718c218adb01e40f1042510537f [file] [log] [blame]
/*
* 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 <stdint.h>
#include "libavutil/avstring.h"
#include "libavutil/eval.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 "libavutil/bprint.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/avfilter.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 25
#define EXTERNAL_CLOCK_MIN_FRAMES 2
#define EXTERNAL_CLOCK_MAX_FRAMES 10
/* Minimum SDL audio buffer size, in samples. */
#define SDL_AUDIO_MIN_BUFFER_SIZE 512
/* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
#define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
/* Step size for volume control in dB */
#define SDL_VOLUME_STEP (0.75)
/* no AV sync correction is done if below the minimum AV sync threshold */
#define AV_SYNC_THRESHOLD_MIN 0.04
/* AV sync correction is done if above the maximum AV sync threshold */
#define AV_SYNC_THRESHOLD_MAX 0.1
/* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
#define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
/* 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
/* polls for possible required screen refresh at least this often, should be less than 1/fps */
#define REFRESH_RATE 0.01
/* 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)
#define CURSOR_HIDE_DELAY 1000000
#define USE_ONEPASS_SUBTITLE_RENDER 1
static unsigned 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;
int64_t duration;
int abort_request;
int serial;
SDL_mutex *mutex;
SDL_cond *cond;
} PacketQueue;
#define VIDEO_PICTURE_QUEUE_SIZE 3
#define SUBPICTURE_QUEUE_SIZE 16
#define SAMPLE_QUEUE_SIZE 9
#define FRAME_QUEUE_SIZE FFMAX(SAMPLE_QUEUE_SIZE, FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE))
typedef struct AudioParams {
int freq;
int channels;
int64_t channel_layout;
enum AVSampleFormat fmt;
int frame_size;
int bytes_per_sec;
} AudioParams;
typedef struct Clock {
double pts; /* clock base */
double pts_drift; /* clock base minus time at which we updated the clock */
double last_updated;
double speed;
int serial; /* clock is based on a packet with this serial */
int paused;
int *queue_serial; /* pointer to the current packet queue serial, used for obsolete clock detection */
} Clock;
/* Common struct for handling all types of decoded data and allocated render buffers. */
typedef struct Frame {
AVFrame *frame;
AVSubtitle sub;
int serial;
double pts; /* presentation timestamp for the frame */
double duration; /* estimated duration of the frame */
int64_t pos; /* byte position of the frame in the input file */
int width;
int height;
int format;
AVRational sar;
int uploaded;
int flip_v;
} Frame;
typedef struct FrameQueue {
Frame queue[FRAME_QUEUE_SIZE];
int rindex;
int windex;
int size;
int max_size;
int keep_last;
int rindex_shown;
SDL_mutex *mutex;
SDL_cond *cond;
PacketQueue *pktq;
} FrameQueue;
enum {
AV_SYNC_AUDIO_MASTER, /* default choice */
AV_SYNC_VIDEO_MASTER,
AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
};
typedef struct Decoder {
AVPacket pkt;
PacketQueue *queue;
AVCodecContext *avctx;
int pkt_serial;
int finished;
int packet_pending;
SDL_cond *empty_queue_cond;
int64_t start_pts;
AVRational start_pts_tb;
int64_t next_pts;
AVRational next_pts_tb;
SDL_Thread *decoder_tid;
} Decoder;
typedef struct VideoState {
SDL_Thread *read_tid;
AVInputFormat *iformat;
int abort_request;
int force_refresh;
int paused;
int last_paused;
int queue_attachments_req;
int seek_req;
int seek_flags;
int64_t seek_pos;
int64_t seek_rel;
int read_pause_return;
AVFormatContext *ic;
int realtime;
Clock audclk;
Clock vidclk;
Clock extclk;
FrameQueue pictq;
FrameQueue subpq;
FrameQueue sampq;
Decoder auddec;
Decoder viddec;
Decoder subdec;
int audio_stream;
int av_sync_type;
double audio_clock;
int audio_clock_serial;
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;
uint8_t *audio_buf;
uint8_t *audio_buf1;
unsigned int audio_buf_size; /* in bytes */
unsigned int audio_buf1_size;
int audio_buf_index; /* in bytes */
int audio_write_buf_size;
int audio_volume;
int muted;
struct AudioParams audio_src;
#if CONFIG_AVFILTER
struct AudioParams audio_filter_src;
#endif
struct AudioParams audio_tgt;
struct SwrContext *swr_ctx;
int frame_drops_early;
int frame_drops_late;
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;
double last_vis_time;
SDL_Texture *vis_texture;
SDL_Texture *sub_texture;
SDL_Texture *vid_texture;
int subtitle_stream;
AVStream *subtitle_st;
PacketQueue subtitleq;
double frame_timer;
double frame_last_returned_time;
double frame_last_filter_delay;
int video_stream;
AVStream *video_st;
PacketQueue videoq;
double max_frame_duration; // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
struct SwsContext *img_convert_ctx;
struct SwsContext *sub_convert_ctx;
int eof;
char *filename;
int width, height, xleft, ytop;
int step;
#if CONFIG_AVFILTER
int vfilter_idx;
AVFilterContext *in_video_filter; // the first filter in the video chain
AVFilterContext *out_video_filter; // the last filter in the video chain
AVFilterContext *in_audio_filter; // the first filter in the audio chain
AVFilterContext *out_audio_filter; // the last filter in the audio chain
AVFilterGraph *agraph; // audio filter graph
#endif
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 default_width = 640;
static int default_height = 480;
static int screen_width = 0;
static int screen_height = 0;
static int screen_left = SDL_WINDOWPOS_CENTERED;
static int screen_top = SDL_WINDOWPOS_CENTERED;
static int audio_disable;
static int video_disable;
static int subtitle_disable;
static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
static int seek_by_bytes = -1;
static float seek_interval = 10;
static int display_disable;
static int borderless;
static int alwaysontop;
static int startup_volume = 100;
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 fast = 0;
static int genpts = 0;
static int lowres = 0;
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;
double rdftspeed = 0.02;
static int64_t cursor_last_shown;
static int cursor_hidden = 0;
#if CONFIG_AVFILTER
static const char **vfilters_list = NULL;
static int nb_vfilters = 0;
static char *afilters = NULL;
#endif
static int autorotate = 1;
static int find_stream_info = 1;
static int filter_nbthreads = 0;
/* current context */
static int is_full_screen;
static int64_t audio_callback_time;
static AVPacket flush_pkt;
#define FF_QUIT_EVENT (SDL_USEREVENT + 2)
static SDL_Window *window;
static SDL_Renderer *renderer;
static SDL_RendererInfo renderer_info = {0};
static SDL_AudioDeviceID audio_dev;
static const struct TextureFormatEntry {
enum AVPixelFormat format;
int texture_fmt;
} sdl_texture_format_map[] = {
{ AV_PIX_FMT_RGB8, SDL_PIXELFORMAT_RGB332 },
{ AV_PIX_FMT_RGB444, SDL_PIXELFORMAT_RGB444 },
{ AV_PIX_FMT_RGB555, SDL_PIXELFORMAT_RGB555 },
{ AV_PIX_FMT_BGR555, SDL_PIXELFORMAT_BGR555 },
{ AV_PIX_FMT_RGB565, SDL_PIXELFORMAT_RGB565 },
{ AV_PIX_FMT_BGR565, SDL_PIXELFORMAT_BGR565 },
{ AV_PIX_FMT_RGB24, SDL_PIXELFORMAT_RGB24 },
{ AV_PIX_FMT_BGR24, SDL_PIXELFORMAT_BGR24 },
{ AV_PIX_FMT_0RGB32, SDL_PIXELFORMAT_RGB888 },
{ AV_PIX_FMT_0BGR32, SDL_PIXELFORMAT_BGR888 },
{ AV_PIX_FMT_NE(RGB0, 0BGR), SDL_PIXELFORMAT_RGBX8888 },
{ AV_PIX_FMT_NE(BGR0, 0RGB), SDL_PIXELFORMAT_BGRX8888 },
{ AV_PIX_FMT_RGB32, SDL_PIXELFORMAT_ARGB8888 },
{ AV_PIX_FMT_RGB32_1, SDL_PIXELFORMAT_RGBA8888 },
{ AV_PIX_FMT_BGR32, SDL_PIXELFORMAT_ABGR8888 },
{ AV_PIX_FMT_BGR32_1, SDL_PIXELFORMAT_BGRA8888 },
{ AV_PIX_FMT_YUV420P, SDL_PIXELFORMAT_IYUV },
{ AV_PIX_FMT_YUYV422, SDL_PIXELFORMAT_YUY2 },
{ AV_PIX_FMT_UYVY422, SDL_PIXELFORMAT_UYVY },
{ AV_PIX_FMT_NONE, SDL_PIXELFORMAT_UNKNOWN },
};
#if CONFIG_AVFILTER
static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
{
GROW_ARRAY(vfilters_list, nb_vfilters);
vfilters_list[nb_vfilters - 1] = arg;
return 0;
}
#endif
static inline
int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
enum AVSampleFormat fmt2, int64_t channel_count2)
{
/* If channel count == 1, planar and non-planar formats are the same */
if (channel_count1 == 1 && channel_count2 == 1)
return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
else
return channel_count1 != channel_count2 || fmt1 != fmt2;
}
static inline
int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
{
if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
return channel_layout;
else
return 0;
}
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);
q->duration += pkt1->pkt.duration;
/* 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;
SDL_LockMutex(q->mutex);
ret = packet_queue_put_private(q, pkt);
SDL_UnlockMutex(q->mutex);
if (pkt != &flush_pkt && ret < 0)
av_packet_unref(pkt);
return ret;
}
static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
{
AVPacket pkt1, *pkt = &pkt1;
av_init_packet(pkt);
pkt->data = NULL;
pkt->size = 0;
pkt->stream_index = stream_index;
return packet_queue_put(q, pkt);
}
/* packet queue handling */
static int packet_queue_init(PacketQueue *q)
{
memset(q, 0, sizeof(PacketQueue));
q->mutex = SDL_CreateMutex();
if (!q->mutex) {
av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
return AVERROR(ENOMEM);
}
q->cond = SDL_CreateCond();
if (!q->cond) {
av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
return AVERROR(ENOMEM);
}
q->abort_request = 1;
return 0;
}
static void packet_queue_flush(PacketQueue *q)
{
MyAVPacketList *pkt, *pkt1;
SDL_LockMutex(q->mutex);
for (pkt = q->first_pkt; pkt; pkt = pkt1) {
pkt1 = pkt->next;
av_packet_unref(&pkt->pkt);
av_freep(&pkt);
}
q->last_pkt = NULL;
q->first_pkt = NULL;
q->nb_packets = 0;
q->size = 0;
q->duration = 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);
q->duration -= pkt1->pkt.duration;
*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 void decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
memset(d, 0, sizeof(Decoder));
d->avctx = avctx;
d->queue = queue;
d->empty_queue_cond = empty_queue_cond;
d->start_pts = AV_NOPTS_VALUE;
d->pkt_serial = -1;
}
static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
int ret = AVERROR(EAGAIN);
for (;;) {
AVPacket pkt;
if (d->queue->serial == d->pkt_serial) {
do {
if (d->queue->abort_request)
return -1;
switch (d->avctx->codec_type) {
case AVMEDIA_TYPE_VIDEO:
ret = avcodec_receive_frame(d->avctx, frame);
if (ret >= 0) {
if (decoder_reorder_pts == -1) {
frame->pts = frame->best_effort_timestamp;
} else if (!decoder_reorder_pts) {
frame->pts = frame->pkt_dts;
}
}
break;
case AVMEDIA_TYPE_AUDIO:
ret = avcodec_receive_frame(d->avctx, frame);
if (ret >= 0) {
AVRational tb = (AVRational){1, frame->sample_rate};
if (frame->pts != AV_NOPTS_VALUE)
frame->pts = av_rescale_q(frame->pts, d->avctx->pkt_timebase, tb);
else if (d->next_pts != AV_NOPTS_VALUE)
frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
if (frame->pts != AV_NOPTS_VALUE) {
d->next_pts = frame->pts + frame->nb_samples;
d->next_pts_tb = tb;
}
}
break;
}
if (ret == AVERROR_EOF) {
d->finished = d->pkt_serial;
avcodec_flush_buffers(d->avctx);
return 0;
}
if (ret >= 0)
return 1;
} while (ret != AVERROR(EAGAIN));
}
do {
if (d->queue->nb_packets == 0)
SDL_CondSignal(d->empty_queue_cond);
if (d->packet_pending) {
av_packet_move_ref(&pkt, &d->pkt);
d->packet_pending = 0;
} else {
if (packet_queue_get(d->queue, &pkt, 1, &d->pkt_serial) < 0)
return -1;
}
if (d->queue->serial == d->pkt_serial)
break;
av_packet_unref(&pkt);
} while (1);
if (pkt.data == flush_pkt.data) {
avcodec_flush_buffers(d->avctx);
d->finished = 0;
d->next_pts = d->start_pts;
d->next_pts_tb = d->start_pts_tb;
} else {
if (d->avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
int got_frame = 0;
ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, &pkt);
if (ret < 0) {
ret = AVERROR(EAGAIN);
} else {
if (got_frame && !pkt.data) {
d->packet_pending = 1;
av_packet_move_ref(&d->pkt, &pkt);
}
ret = got_frame ? 0 : (pkt.data ? AVERROR(EAGAIN) : AVERROR_EOF);
}
} else {
if (avcodec_send_packet(d->avctx, &pkt) == AVERROR(EAGAIN)) {
av_log(d->avctx, AV_LOG_ERROR, "Receive_frame and send_packet both returned EAGAIN, which is an API violation.\n");
d->packet_pending = 1;
av_packet_move_ref(&d->pkt, &pkt);
}
}
av_packet_unref(&pkt);
}
}
}
static void decoder_destroy(Decoder *d) {
av_packet_unref(&d->pkt);
avcodec_free_context(&d->avctx);
}
static void frame_queue_unref_item(Frame *vp)
{
av_frame_unref(vp->frame);
avsubtitle_free(&vp->sub);
}
static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
{
int i;
memset(f, 0, sizeof(FrameQueue));
if (!(f->mutex = SDL_CreateMutex())) {
av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
return AVERROR(ENOMEM);
}
if (!(f->cond = SDL_CreateCond())) {
av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
return AVERROR(ENOMEM);
}
f->pktq = pktq;
f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
f->keep_last = !!keep_last;
for (i = 0; i < f->max_size; i++)
if (!(f->queue[i].frame = av_frame_alloc()))
return AVERROR(ENOMEM);
return 0;
}
static void frame_queue_destory(FrameQueue *f)
{
int i;
for (i = 0; i < f->max_size; i++) {
Frame *vp = &f->queue[i];
frame_queue_unref_item(vp);
av_frame_free(&vp->frame);
}
SDL_DestroyMutex(f->mutex);
SDL_DestroyCond(f->cond);
}
static void frame_queue_signal(FrameQueue *f)
{
SDL_LockMutex(f->mutex);
SDL_CondSignal(f->cond);
SDL_UnlockMutex(f->mutex);
}
static Frame *frame_queue_peek(FrameQueue *f)
{
return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
}
static Frame *frame_queue_peek_next(FrameQueue *f)
{
return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
}
static Frame *frame_queue_peek_last(FrameQueue *f)
{
return &f->queue[f->rindex];
}
static Frame *frame_queue_peek_writable(FrameQueue *f)
{
/* wait until we have space to put a new frame */
SDL_LockMutex(f->mutex);
while (f->size >= f->max_size &&
!f->pktq->abort_request) {
SDL_CondWait(f->cond, f->mutex);
}
SDL_UnlockMutex(f->mutex);
if (f->pktq->abort_request)
return NULL;
return &f->queue[f->windex];
}
static Frame *frame_queue_peek_readable(FrameQueue *f)
{
/* wait until we have a readable a new frame */
SDL_LockMutex(f->mutex);
while (f->size - f->rindex_shown <= 0 &&
!f->pktq->abort_request) {
SDL_CondWait(f->cond, f->mutex);
}
SDL_UnlockMutex(f->mutex);
if (f->pktq->abort_request)
return NULL;
return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
}
static void frame_queue_push(FrameQueue *f)
{
if (++f->windex == f->max_size)
f->windex = 0;
SDL_LockMutex(f->mutex);
f->size++;
SDL_CondSignal(f->cond);
SDL_UnlockMutex(f->mutex);
}
static void frame_queue_next(FrameQueue *f)
{
if (f->keep_last && !f->rindex_shown) {
f->rindex_shown = 1;
return;
}
frame_queue_unref_item(&f->queue[f->rindex]);
if (++f->rindex == f->max_size)
f->rindex = 0;
SDL_LockMutex(f->mutex);
f->size--;
SDL_CondSignal(f->cond);
SDL_UnlockMutex(f->mutex);
}
/* return the number of undisplayed frames in the queue */
static int frame_queue_nb_remaining(FrameQueue *f)
{
return f->size - f->rindex_shown;
}
/* return last shown position */
static int64_t frame_queue_last_pos(FrameQueue *f)
{
Frame *fp = &f->queue[f->rindex];
if (f->rindex_shown && fp->serial == f->pktq->serial)
return fp->pos;
else
return -1;
}
static void decoder_abort(Decoder *d, FrameQueue *fq)
{
packet_queue_abort(d->queue);
frame_queue_signal(fq);
SDL_WaitThread(d->decoder_tid, NULL);
d->decoder_tid = NULL;
packet_queue_flush(d->queue);
}
static inline void fill_rectangle(int x, int y, int w, int h)
{
SDL_Rect rect;
rect.x = x;
rect.y = y;
rect.w = w;
rect.h = h;
if (w && h)
SDL_RenderFillRect(renderer, &rect);
}
static int realloc_texture(SDL_Texture **texture, Uint32 new_format, int new_width, int new_height, SDL_BlendMode blendmode, int init_texture)
{
Uint32 format;
int access, w, h;
if (!*texture || SDL_QueryTexture(*texture, &format, &access, &w, &h) < 0 || new_width != w || new_height != h || new_format != format) {
void *pixels;
int pitch;
if (*texture)
SDL_DestroyTexture(*texture);
if (!(*texture = SDL_CreateTexture(renderer, new_format, SDL_TEXTUREACCESS_STREAMING, new_width, new_height)))
return -1;
if (SDL_SetTextureBlendMode(*texture, blendmode) < 0)
return -1;
if (init_texture) {
if (SDL_LockTexture(*texture, NULL, &pixels, &pitch) < 0)
return -1;
memset(pixels, 0, pitch * new_height);
SDL_UnlockTexture(*texture);
}
av_log(NULL, AV_LOG_VERBOSE, "Created %dx%d texture with %s.\n", new_width, new_height, SDL_GetPixelFormatName(new_format));
}
return 0;
}
static void calculate_display_rect(SDL_Rect *rect,
int scr_xleft, int scr_ytop, int scr_width, int scr_height,
int pic_width, int pic_height, AVRational pic_sar)
{
AVRational aspect_ratio = pic_sar;
int64_t width, height, x, y;
if (av_cmp_q(aspect_ratio, av_make_q(0, 1)) <= 0)
aspect_ratio = av_make_q(1, 1);
aspect_ratio = av_mul_q(aspect_ratio, av_make_q(pic_width, pic_height));
/* XXX: we suppose the screen has a 1.0 pixel ratio */
height = scr_height;
width = av_rescale(height, aspect_ratio.num, aspect_ratio.den) & ~1;
if (width > scr_width) {
width = scr_width;
height = av_rescale(width, aspect_ratio.den, aspect_ratio.num) & ~1;
}
x = (scr_width - width) / 2;
y = (scr_height - height) / 2;
rect->x = scr_xleft + x;
rect->y = scr_ytop + y;
rect->w = FFMAX((int)width, 1);
rect->h = FFMAX((int)height, 1);
}
static void get_sdl_pix_fmt_and_blendmode(int format, Uint32 *sdl_pix_fmt, SDL_BlendMode *sdl_blendmode)
{
int i;
*sdl_blendmode = SDL_BLENDMODE_NONE;
*sdl_pix_fmt = SDL_PIXELFORMAT_UNKNOWN;
if (format == AV_PIX_FMT_RGB32 ||
format == AV_PIX_FMT_RGB32_1 ||
format == AV_PIX_FMT_BGR32 ||
format == AV_PIX_FMT_BGR32_1)
*sdl_blendmode = SDL_BLENDMODE_BLEND;
for (i = 0; i < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; i++) {
if (format == sdl_texture_format_map[i].format) {
*sdl_pix_fmt = sdl_texture_format_map[i].texture_fmt;
return;
}
}
}
static int upload_texture(SDL_Texture **tex, AVFrame *frame, struct SwsContext **img_convert_ctx) {
int ret = 0;
Uint32 sdl_pix_fmt;
SDL_BlendMode sdl_blendmode;
get_sdl_pix_fmt_and_blendmode(frame->format, &sdl_pix_fmt, &sdl_blendmode);
if (realloc_texture(tex, sdl_pix_fmt == SDL_PIXELFORMAT_UNKNOWN ? SDL_PIXELFORMAT_ARGB8888 : sdl_pix_fmt, frame->width, frame->height, sdl_blendmode, 0) < 0)
return -1;
switch (sdl_pix_fmt) {
case SDL_PIXELFORMAT_UNKNOWN:
/* This should only happen if we are not using avfilter... */
*img_convert_ctx = sws_getCachedContext(*img_convert_ctx,
frame->width, frame->height, frame->format, frame->width, frame->height,
AV_PIX_FMT_BGRA, sws_flags, NULL, NULL, NULL);
if (*img_convert_ctx != NULL) {
uint8_t *pixels[4];
int pitch[4];
if (!SDL_LockTexture(*tex, NULL, (void **)pixels, pitch)) {
sws_scale(*img_convert_ctx, (const uint8_t * const *)frame->data, frame->linesize,
0, frame->height, pixels, pitch);
SDL_UnlockTexture(*tex);
}
} else {
av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
ret = -1;
}
break;
case SDL_PIXELFORMAT_IYUV:
if (frame->linesize[0] > 0 && frame->linesize[1] > 0 && frame->linesize[2] > 0) {
ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0], frame->linesize[0],
frame->data[1], frame->linesize[1],
frame->data[2], frame->linesize[2]);
} else if (frame->linesize[0] < 0 && frame->linesize[1] < 0 && frame->linesize[2] < 0) {
ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height - 1), -frame->linesize[0],
frame->data[1] + frame->linesize[1] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[1],
frame->data[2] + frame->linesize[2] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[2]);
} else {
av_log(NULL, AV_LOG_ERROR, "Mixed negative and positive linesizes are not supported.\n");
return -1;
}
break;
default:
if (frame->linesize[0] < 0) {
ret = SDL_UpdateTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height - 1), -frame->linesize[0]);
} else {
ret = SDL_UpdateTexture(*tex, NULL, frame->data[0], frame->linesize[0]);
}
break;
}
return ret;
}
static void set_sdl_yuv_conversion_mode(AVFrame *frame)
{
#if SDL_VERSION_ATLEAST(2,0,8)
SDL_YUV_CONVERSION_MODE mode = SDL_YUV_CONVERSION_AUTOMATIC;
if (frame && (frame->format == AV_PIX_FMT_YUV420P || frame->format == AV_PIX_FMT_YUYV422 || frame->format == AV_PIX_FMT_UYVY422)) {
if (frame->color_range == AVCOL_RANGE_JPEG)
mode = SDL_YUV_CONVERSION_JPEG;
else if (frame->colorspace == AVCOL_SPC_BT709)
mode = SDL_YUV_CONVERSION_BT709;
else if (frame->colorspace == AVCOL_SPC_BT470BG || frame->colorspace == AVCOL_SPC_SMPTE170M || frame->colorspace == AVCOL_SPC_SMPTE240M)
mode = SDL_YUV_CONVERSION_BT601;
}
SDL_SetYUVConversionMode(mode);
#endif
}
static void video_image_display(VideoState *is)
{
Frame *vp;
Frame *sp = NULL;
SDL_Rect rect;
vp = frame_queue_peek_last(&is->pictq);
if (is->subtitle_st) {
if (frame_queue_nb_remaining(&is->subpq) > 0) {
sp = frame_queue_peek(&is->subpq);
if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
if (!sp->uploaded) {
uint8_t* pixels[4];
int pitch[4];
int i;
if (!sp->width || !sp->height) {
sp->width = vp->width;
sp->height = vp->height;
}
if (realloc_texture(&is->sub_texture, SDL_PIXELFORMAT_ARGB8888, sp->width, sp->height, SDL_BLENDMODE_BLEND, 1) < 0)
return;
for (i = 0; i < sp->sub.num_rects; i++) {
AVSubtitleRect *sub_rect = sp->sub.rects[i];
sub_rect->x = av_clip(sub_rect->x, 0, sp->width );
sub_rect->y = av_clip(sub_rect->y, 0, sp->height);
sub_rect->w = av_clip(sub_rect->w, 0, sp->width - sub_rect->x);
sub_rect->h = av_clip(sub_rect->h, 0, sp->height - sub_rect->y);
is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx,
sub_rect->w, sub_rect->h, AV_PIX_FMT_PAL8,
sub_rect->w, sub_rect->h, AV_PIX_FMT_BGRA,
0, NULL, NULL, NULL);
if (!is->sub_convert_ctx) {
av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
return;
}
if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)pixels, pitch)) {
sws_scale(is->sub_convert_ctx, (const uint8_t * const *)sub_rect->data, sub_rect->linesize,
0, sub_rect->h, pixels, pitch);
SDL_UnlockTexture(is->sub_texture);
}
}
sp->uploaded = 1;
}
} else
sp = NULL;
}
}
calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
if (!vp->uploaded) {
if (upload_texture(&is->vid_texture, vp->frame, &is->img_convert_ctx) < 0)
return;
vp->uploaded = 1;
vp->flip_v = vp->frame->linesize[0] < 0;
}
set_sdl_yuv_conversion_mode(vp->frame);
SDL_RenderCopyEx(renderer, is->vid_texture, NULL, &rect, 0, NULL, vp->flip_v ? SDL_FLIP_VERTICAL : 0);
set_sdl_yuv_conversion_mode(NULL);
if (sp) {
#if USE_ONEPASS_SUBTITLE_RENDER
SDL_RenderCopy(renderer, is->sub_texture, NULL, &rect);
#else
int i;
double xratio = (double)rect.w / (double)sp->width;
double yratio = (double)rect.h / (double)sp->height;
for (i = 0; i < sp->sub.num_rects; i++) {
SDL_Rect *sub_rect = (SDL_Rect*)sp->sub.rects[i];
SDL_Rect target = {.x = rect.x + sub_rect->x * xratio,
.y = rect.y + sub_rect->y * yratio,
.w = sub_rect->w * xratio,
.h = sub_rect->h * yratio};
SDL_RenderCopy(renderer, is->sub_texture, sub_rect, &target);
}
#endif
}
}
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;
int64_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_relative() - 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;
}
if (s->show_mode == SHOW_MODE_WAVES) {
SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
/* 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(s->xleft + x, ys, 1, y);
i += channels;
if (i >= SAMPLE_ARRAY_SIZE)
i -= SAMPLE_ARRAY_SIZE;
}
}
SDL_SetRenderDrawColor(renderer, 0, 0, 255, 255);
for (ch = 1; ch < nb_display_channels; ch++) {
y = s->ytop + ch * h;
fill_rectangle(s->xleft, y, s->width, 1);
}
} else {
if (realloc_texture(&s->vis_texture, SDL_PIXELFORMAT_ARGB8888, s->width, s->height, SDL_BLENDMODE_NONE, 1) < 0)
return;
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_array(nb_freq, 4 *sizeof(*s->rdft_data));
}
if (!s->rdft || !s->rdft_data){
av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
s->show_mode = SHOW_MODE_WAVES;
} else {
FFTSample *data[2];
SDL_Rect rect = {.x = s->xpos, .y = 0, .w = 1, .h = s->height};
uint32_t *pixels;
int pitch;
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 it is more than fast enough. */
if (!SDL_LockTexture(s->vis_texture, &rect, (void **)&pixels, &pitch)) {
pitch >>= 2;
pixels += pitch * s->height;
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 * hypot(data[1][2 * y + 0], data[1][2 * y + 1]))
: a;
a = FFMIN(a, 255);
b = FFMIN(b, 255);
pixels -= pitch;
*pixels = (a << 16) + (b << 8) + ((a+b) >> 1);
}
SDL_UnlockTexture(s->vis_texture);
}
SDL_RenderCopy(renderer, s->vis_texture, NULL, NULL);
}
if (!s->paused)
s->xpos++;
if (s->xpos >= s->width)
s->xpos= s->xleft;
}
}
static void stream_component_close(VideoState *is, int stream_index)
{
AVFormatContext *ic = is->ic;
AVCodecParameters *codecpar;
if (stream_index < 0 || stream_index >= ic->nb_streams)
return;
codecpar = ic->streams[stream_index]->codecpar;
switch (codecpar->codec_type) {
case AVMEDIA_TYPE_AUDIO:
decoder_abort(&is->auddec, &is->sampq);
SDL_CloseAudioDevice(audio_dev);
decoder_destroy(&is->auddec);
swr_free(&is->swr_ctx);
av_freep(&is->audio_buf1);
is->audio_buf1_size = 0;
is->audio_buf = NULL;
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:
decoder_abort(&is->viddec, &is->pictq);
decoder_destroy(&is->viddec);
break;
case AVMEDIA_TYPE_SUBTITLE:
decoder_abort(&is->subdec, &is->subpq);
decoder_destroy(&is->subdec);
break;
default:
break;
}
ic->streams[stream_index]->discard = AVDISCARD_ALL;
switch (codecpar->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 void stream_close(VideoState *is)
{
/* XXX: use a special url_shutdown call to abort parse cleanly */
is->abort_request = 1;
SDL_WaitThread(is->read_tid, 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->subtitle_stream >= 0)
stream_component_close(is, is->subtitle_stream);
avformat_close_input(&is->ic);
packet_queue_destroy(&is->videoq);
packet_queue_destroy(&is->audioq);
packet_queue_destroy(&is->subtitleq);
/* free all pictures */
frame_queue_destory(&is->pictq);
frame_queue_destory(&is->sampq);
frame_queue_destory(&is->subpq);
SDL_DestroyCond(is->continue_read_thread);
sws_freeContext(is->img_convert_ctx);
sws_freeContext(is->sub_convert_ctx);
av_free(is->filename);
if (is->vis_texture)
SDL_DestroyTexture(is->vis_texture);
if (is->vid_texture)
SDL_DestroyTexture(is->vid_texture);
if (is->sub_texture)
SDL_DestroyTexture(is->sub_texture);
av_free(is);
}
static void do_exit(VideoState *is)
{
if (is) {
stream_close(is);
}
if (renderer)
SDL_DestroyRenderer(renderer);
if (window)
SDL_DestroyWindow(window);
uninit_opts();
#if CONFIG_AVFILTER
av_freep(&vfilters_list);
#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 void set_default_window_size(int width, int height, AVRational sar)
{
SDL_Rect rect;
int max_width = screen_width ? screen_width : INT_MAX;
int max_height = screen_height ? screen_height : INT_MAX;
if (max_width == INT_MAX && max_height == INT_MAX)
max_height = height;
calculate_display_rect(&rect, 0, 0, max_width, max_height, width, height, sar);
default_width = rect.w;
default_height = rect.h;
}
static int video_open(VideoState *is)
{
int w,h;
w = screen_width ? screen_width : default_width;
h = screen_height ? screen_height : default_height;
if (!window_title)
window_title = input_filename;
SDL_SetWindowTitle(window, window_title);
SDL_SetWindowSize(window, w, h);
SDL_SetWindowPosition(window, screen_left, screen_top);
if (is_full_screen)
SDL_SetWindowFullscreen(window, SDL_WINDOW_FULLSCREEN_DESKTOP);
SDL_ShowWindow(window);
is->width = w;
is->height = h;
return 0;
}
/* display the current picture, if any */
static void video_display(VideoState *is)
{
if (!is->width)
video_open(is);
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
SDL_RenderClear(renderer);
if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
video_audio_display(is);
else if (is->video_st)
video_image_display(is);
SDL_RenderPresent(renderer);
}
static double get_clock(Clock *c)
{
if (*c->queue_serial != c->serial)
return NAN;
if (c->paused) {
return c->pts;
} else {
double time = av_gettime_relative() / 1000000.0;
return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
}
}
static void set_clock_at(Clock *c, double pts, int serial, double time)
{
c->pts = pts;
c->last_updated = time;
c->pts_drift = c->pts - time;
c->serial = serial;
}
static void set_clock(Clock *c, double pts, int serial)
{
double time = av_gettime_relative() / 1000000.0;
set_clock_at(c, pts, serial, time);
}
static void set_clock_speed(Clock *c, double speed)
{
set_clock(c, get_clock(c), c->serial);
c->speed = speed;
}
static void init_clock(Clock *c, int *queue_serial)
{
c->speed = 1.0;
c->paused = 0;
c->queue_serial = queue_serial;
set_clock(c, NAN, -1);
}
static void sync_clock_to_slave(Clock *c, Clock *slave)
{
double clock = get_clock(c);
double slave_clock = get_clock(slave);
if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
set_clock(c, slave_clock, slave->serial);
}
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_clock(&is->vidclk);
break;
case AV_SYNC_AUDIO_MASTER:
val = get_clock(&is->audclk);
break;
default:
val = get_clock(&is->extclk);
break;
}
return val;
}
static void check_external_clock_speed(VideoState *is) {
if (is->video_stream >= 0 && is->videoq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES ||
is->audio_stream >= 0 && is->audioq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES) {
set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
} else if ((is->video_stream < 0 || is->videoq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES) &&
(is->audio_stream < 0 || is->audioq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES)) {
set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
} else {
double speed = is->extclk.speed;
if (speed != 1.0)
set_clock_speed(&is->extclk, 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;
SDL_CondSignal(is->continue_read_thread);
}
}
/* pause or resume the video */
static void stream_toggle_pause(VideoState *is)
{
if (is->paused) {
is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
if (is->read_pause_return != AVERROR(ENOSYS)) {
is->vidclk.paused = 0;
}
set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
}
set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
}
static void toggle_pause(VideoState *is)
{
stream_toggle_pause(is);
is->step = 0;
}
static void toggle_mute(VideoState *is)
{
is->muted = !is->muted;
}
static void update_volume(VideoState *is, int sign, double step)
{
double volume_level = is->audio_volume ? (20 * log(is->audio_volume / (double)SDL_MIX_MAXVOLUME) / log(10)) : -1000.0;
int new_volume = lrint(SDL_MIX_MAXVOLUME * pow(10.0, (volume_level + sign * step) / 20.0));
is->audio_volume = av_clip(is->audio_volume == new_volume ? (is->audio_volume + sign) : new_volume, 0, SDL_MIX_MAXVOLUME);
}
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 double compute_target_delay(double delay, VideoState *is)
{
double sync_threshold, diff = 0;
/* 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_clock(&is->vidclk) - 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_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
if (diff <= -sync_threshold)
delay = FFMAX(0, delay + diff);
else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
delay = delay + diff;
else if (diff >= sync_threshold)
delay = 2 * delay;
}
}
av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f A-V=%f\n",
delay, -diff);
return delay;
}
static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
if (vp->serial == nextvp->serial) {
double duration = nextvp->pts - vp->pts;
if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
return vp->duration;
else
return duration;
} else {
return 0.0;
}
}
static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
/* update current video pts */
set_clock(&is->vidclk, pts, serial);
sync_clock_to_slave(&is->extclk, &is->vidclk);
}
/* called to display each frame */
static void video_refresh(void *opaque, double *remaining_time)
{
VideoState *is = opaque;
double time;
Frame *sp, *sp2;
if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
check_external_clock_speed(is);
if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
time = av_gettime_relative() / 1000000.0;
if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
video_display(is);
is->last_vis_time = time;
}
*remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
}
if (is->video_st) {
retry:
if (frame_queue_nb_remaining(&is->pictq) == 0) {
// nothing to do, no picture to display in the queue
} else {
double last_duration, duration, delay;
Frame *vp, *lastvp;
/* dequeue the picture */
lastvp = frame_queue_peek_last(&is->pictq);
vp = frame_queue_peek(&is->pictq);
if (vp->serial != is->videoq.serial) {
frame_queue_next(&is->pictq);
goto retry;
}
if (lastvp->serial != vp->serial)
is->frame_timer = av_gettime_relative() / 1000000.0;
if (is->paused)
goto display;
/* compute nominal last_duration */
last_duration = vp_duration(is, lastvp, vp);
delay = compute_target_delay(last_duration, is);
time= av_gettime_relative()/1000000.0;
if (time < is->frame_timer + delay) {
*remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
goto display;
}
is->frame_timer += delay;
if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
is->frame_timer = time;
SDL_LockMutex(is->pictq.mutex);
if (!isnan(vp->pts))
update_video_pts(is, vp->pts, vp->pos, vp->serial);
SDL_UnlockMutex(is->pictq.mutex);
if (frame_queue_nb_remaining(&is->pictq) > 1) {
Frame *nextvp = frame_queue_peek_next(&is->pictq);
duration = vp_duration(is, vp, nextvp);
if(!is->step && (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
is->frame_drops_late++;
frame_queue_next(&is->pictq);
goto retry;
}
}
if (is->subtitle_st) {
while (frame_queue_nb_remaining(&is->subpq) > 0) {
sp = frame_queue_peek(&is->subpq);
if (frame_queue_nb_remaining(&is->subpq) > 1)
sp2 = frame_queue_peek_next(&is->subpq);
else
sp2 = NULL;
if (sp->serial != is->subtitleq.serial
|| (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
|| (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
{
if (sp->uploaded) {
int i;
for (i = 0; i < sp->sub.num_rects; i++) {
AVSubtitleRect *sub_rect = sp->sub.rects[i];
uint8_t *pixels;
int pitch, j;
if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)&pixels, &pitch)) {
for (j = 0; j < sub_rect->h; j++, pixels += pitch)
memset(pixels, 0, sub_rect->w << 2);
SDL_UnlockTexture(is->sub_texture);
}
}
}
frame_queue_next(&is->subpq);
} else {
break;
}
}
}
frame_queue_next(&is->pictq);
is->force_refresh = 1;
if (is->step && !is->paused)
stream_toggle_pause(is);
}
display:
/* display picture */
if (!display_disable && is->force_refresh && is->show_mode == SHOW_MODE_VIDEO && is->pictq.rindex_shown)
video_display(is);
}
is->force_refresh = 0;
if (show_status) {
AVBPrint buf;
static int64_t last_time;
int64_t cur_time;
int aqsize, vqsize, sqsize;
double av_diff;
cur_time = av_gettime_relative();
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_clock(&is->audclk) - get_clock(&is->vidclk);
else if (is->video_st)
av_diff = get_master_clock(is) - get_clock(&is->vidclk);
else if (is->audio_st)
av_diff = get_master_clock(is) - get_clock(&is->audclk);
av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
av_bprintf(&buf,
"%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r",
get_master_clock(is),
(is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : " ")),
av_diff,
is->frame_drops_early + is->frame_drops_late,
aqsize / 1024,
vqsize / 1024,
sqsize,
is->video_st ? is->viddec.avctx->pts_correction_num_faulty_dts : 0,
is->video_st ? is->viddec.avctx->pts_correction_num_faulty_pts : 0);
if (show_status == 1 && AV_LOG_INFO > av_log_get_level())
fprintf(stderr, "%s", buf.str);
else
av_log(NULL, AV_LOG_INFO, "%s", buf.str);
fflush(stderr);
av_bprint_finalize(&buf, NULL);
last_time = cur_time;
}
}
}
static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
{
Frame *vp;
#if defined(DEBUG_SYNC)
printf("frame_type=%c pts=%0.3f\n",
av_get_picture_type_char(src_frame->pict_type), pts);
#endif
if (!(vp = frame_queue_peek_writable(&is->pictq)))
return -1;
vp->sar = src_frame->sample_aspect_ratio;
vp->uploaded = 0;
vp->width = src_frame->width;
vp->height = src_frame->height;
vp->format = src_frame->format;
vp->pts = pts;
vp->duration = duration;
vp->pos = pos;
vp->serial = serial;
set_default_window_size(vp->width, vp->height, vp->sar);
av_frame_move_ref(vp->frame, src_frame);
frame_queue_push(&is->pictq);
return 0;
}
static int get_video_frame(VideoState *is, AVFrame *frame)
{
int got_picture;
if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
return -1;
if (got_picture) {
double dpts = NAN;
if (frame->pts != AV_NOPTS_VALUE)
dpts = av_q2d(is->video_st->time_base) * frame->pts;
frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
if (frame->pts != AV_NOPTS_VALUE) {
double diff = dpts - get_master_clock(is);
if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
diff - is->frame_last_filter_delay < 0 &&
is->viddec.pkt_serial == is->vidclk.serial &&
is->videoq.nb_packets) {
is->frame_drops_early++;
av_frame_unref(frame);
got_picture = 0;
}
}
}
}
return got_picture;
}
#if CONFIG_AVFILTER
static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
{
int ret, i;
int nb_filters = graph->nb_filters;
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_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
goto fail;
} else {
if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
goto fail;
}
/* Reorder the filters to ensure that inputs of the custom filters are merged first */
for (i = 0; i < graph->nb_filters - nb_filters; i++)
FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
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, AVFrame *frame)
{
enum AVPixelFormat pix_fmts[FF_ARRAY_ELEMS(sdl_texture_format_map)];
char sws_flags_str[512] = "";
char buffersrc_args[256];
int ret;
AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
AVCodecParameters *codecpar = is->video_st->codecpar;
AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
AVDictionaryEntry *e = NULL;
int nb_pix_fmts = 0;
int i, j;
for (i = 0; i < renderer_info.num_texture_formats; i++) {
for (j = 0; j < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; j++) {
if (renderer_info.texture_formats[i] == sdl_texture_format_map[j].texture_fmt) {
pix_fmts[nb_pix_fmts++] = sdl_texture_format_map[j].format;
break;
}
}
}
pix_fmts[nb_pix_fmts] = AV_PIX_FMT_NONE;
while ((e = av_dict_get(sws_dict, "", e, AV_DICT_IGNORE_SUFFIX))) {
if (!strcmp(e->key, "sws_flags")) {
av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", "flags", e->value);
} else
av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", e->key, e->value);
}
if (strlen(sws_flags_str))
sws_flags_str[strlen(sws_flags_str)-1] = '\0';
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",
frame->width, frame->height, frame->format,
is->video_st->time_base.num, is->video_st->time_base.den,
codecpar->sample_aspect_ratio.num, FFMAX(codecpar->sample_aspect_ratio.den, 1));
if (fr.num && fr.den)
av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
if ((ret = avfilter_graph_create_filter(&filt_src,
avfilter_get_by_name("buffer"),
"ffplay_buffer", buffersrc_args, NULL,
graph)) < 0)
goto fail;
ret = avfilter_graph_create_filter(&filt_out,
avfilter_get_by_name("buffersink"),
"ffplay_buffersink", NULL, NULL, graph);
if (ret < 0)
goto fail;
if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts, AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
goto fail;
last_filter = filt_out;
/* Note: this macro adds a filter before the lastly added filter, so the
* processing order of the filters is in reverse */
#define INSERT_FILT(name, arg) do { \
AVFilterContext *filt_ctx; \
\
ret = avfilter_graph_create_filter(&filt_ctx, \
avfilter_get_by_name(name), \
"ffplay_" name, arg, NULL, graph); \
if (ret < 0) \
goto fail; \
\
ret = avfilter_link(filt_ctx, 0, last_filter, 0); \
if (ret < 0) \
goto fail; \
\
last_filter = filt_ctx; \
} while (0)
if (autorotate) {
double theta = get_rotation(is->video_st);
if (fabs(theta - 90) < 1.0) {
INSERT_FILT("transpose", "clock");
} else if (fabs(theta - 180) < 1.0) {
INSERT_FILT("hflip", NULL);
INSERT_FILT("vflip", NULL);
} else if (fabs(theta - 270) < 1.0) {
INSERT_FILT("transpose", "cclock");
} else if (fabs(theta) > 1.0) {
char rotate_buf[64];
snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
INSERT_FILT("rotate", rotate_buf);
}
}
if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
goto fail;
is->in_video_filter = filt_src;
is->out_video_filter = filt_out;
fail:
return ret;
}
static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
{
static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
int sample_rates[2] = { 0, -1 };
int64_t channel_layouts[2] = { 0, -1 };
int channels[2] = { 0, -1 };
AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
char aresample_swr_opts[512] = "";
AVDictionaryEntry *e = NULL;
char asrc_args[256];
int ret;
avfilter_graph_free(&is->agraph);
if (!(is->agraph = avfilter_graph_alloc()))
return AVERROR(ENOMEM);
is->agraph->nb_threads = filter_nbthreads;
while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
if (strlen(aresample_swr_opts))
aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
ret = snprintf(asrc_args, sizeof(asrc_args),
"sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
is->audio_filter_src.channels,
1, is->audio_filter_src.freq);
if (is->audio_filter_src.channel_layout)
snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
":channel_layout=0x%"PRIx64, is->audio_filter_src.channel_layout);
ret = avfilter_graph_create_filter(&filt_asrc,
avfilter_get_by_name("abuffer"), "ffplay_abuffer",
asrc_args, NULL, is->agraph);
if (ret < 0)
goto end;
ret = avfilter_graph_create_filter(&filt_asink,
avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
NULL, NULL, is->agraph);
if (ret < 0)
goto end;
if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts, AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
goto end;
if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
goto end;
if (force_output_format) {
channel_layouts[0] = is->audio_tgt.channel_layout;
channels [0] = is->audio_tgt.channel_layout ? -1 : is->audio_tgt.channels;
sample_rates [0] = is->audio_tgt.freq;
if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
goto end;
if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts, -1, AV_OPT_SEARCH_CHILDREN)) < 0)
goto end;
if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels , -1, AV_OPT_SEARCH_CHILDREN)) < 0)
goto end;
if ((ret = av_opt_set_int_list(filt_asink, "sample_rates" , sample_rates , -1, AV_OPT_SEARCH_CHILDREN)) < 0)
goto end;
}
if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
goto end;
is->in_audio_filter = filt_asrc;
is->out_audio_filter = filt_asink;
end:
if (ret < 0)
avfilter_graph_free(&is->agraph);
return ret;
}
#endif /* CONFIG_AVFILTER */
static int audio_thread(void *arg)
{
VideoState *is = arg;
AVFrame *frame = av_frame_alloc();
Frame *af;
#if CONFIG_AVFILTER
int last_serial = -1;
int64_t dec_channel_layout;
int reconfigure;
#endif
int got_frame = 0;
AVRational tb;
int ret = 0;
if (!frame)
return AVERROR(ENOMEM);
do {
if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
goto the_end;
if (got_frame) {
tb = (AVRational){1, frame->sample_rate};
#if CONFIG_AVFILTER
dec_channel_layout = get_valid_channel_layout(frame->channel_layout, frame->channels);
reconfigure =
cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
frame->format, frame->channels) ||
is->audio_filter_src.channel_layout != dec_channel_layout ||
is->audio_filter_src.freq != frame->sample_rate ||
is->auddec.pkt_serial != last_serial;
if (reconfigure) {
char buf1[1024], buf2[1024];
av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
av_log(NULL, AV_LOG_DEBUG,
"Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
frame->sample_rate, frame->channels, av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
is->audio_filter_src.fmt = frame->format;
is->audio_filter_src.channels = frame->channels;
is->audio_filter_src.channel_layout = dec_channel_layout;
is->audio_filter_src.freq = frame->sample_rate;
last_serial = is->auddec.pkt_serial;
if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
goto the_end;
}
if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
goto the_end;
while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
tb = av_buffersink_get_time_base(is->out_audio_filter);
#endif
if (!(af = frame_queue_peek_writable(&is->sampq)))
goto the_end;
af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
af->pos = frame->pkt_pos;
af->serial = is->auddec.pkt_serial;
af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
av_frame_move_ref(af->frame, frame);
frame_queue_push(&is->sampq);
#if CONFIG_AVFILTER
if (is->audioq.serial != is->auddec.pkt_serial)
break;
}
if (ret == AVERROR_EOF)
is->auddec.finished = is->auddec.pkt_serial;
#endif
}
} while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
the_end:
#if CONFIG_AVFILTER
avfilter_graph_free(&is->agraph);
#endif
av_frame_free(&frame);
return ret;
}
static int decoder_start(Decoder *d, int (*fn)(void *), const char *thread_name, void* arg)
{
packet_queue_start(d->queue);
d->decoder_tid = SDL_CreateThread(fn, thread_name, arg);
if (!d->decoder_tid) {
av_log(NULL, AV_LOG_ERROR, "SDL_CreateThread(): %s\n", SDL_GetError());
return AVERROR(ENOMEM);
}
return 0;
}
static int video_thread(void *arg)
{
VideoState *is = arg;
AVFrame *frame = av_frame_alloc();
double pts;
double duration;
int ret;
AVRational tb = is->video_st->time_base;
AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
#if CONFIG_AVFILTER
AVFilterGraph *graph = NULL;
AVFilterContext *filt_out = NULL, *filt_in = NULL;
int last_w = 0;
int last_h = 0;
enum AVPixelFormat last_format = -2;
int last_serial = -1;
int last_vfilter_idx = 0;
#endif
if (!frame)
return AVERROR(ENOMEM);
for (;;) {
ret = get_video_frame(is, frame);
if (ret < 0)
goto the_end;
if (!ret)
continue;
#if CONFIG_AVFILTER
if ( last_w != frame->width
|| last_h != frame->height
|| last_format != frame->format
|| last_serial != is->viddec.pkt_serial
|| last_vfilter_idx != is->vfilter_idx) {
av_log(NULL, AV_LOG_DEBUG,
"Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
last_w, last_h,
(const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
frame->width, frame->height,
(const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
avfilter_graph_free(&graph);
graph = avfilter_graph_alloc();
if (!graph) {
ret = AVERROR(ENOMEM);
goto the_end;
}
graph->nb_threads = filter_nbthreads;
if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
SDL_Event event;
event.type = FF_QUIT_EVENT;
event.user.data1 = is;
SDL_PushEvent(&event);
goto the_end;
}
filt_in = is->in_video_filter;
filt_out = is->out_video_filter;
last_w = frame->width;
last_h = frame->height;
last_format = frame->format;
last_serial = is->viddec.pkt_serial;
last_vfilter_idx = is->vfilter_idx;
frame_rate = av_buffersink_get_frame_rate(filt_out);
}
ret = av_buffersrc_add_frame(filt_in, frame);
if (ret < 0)
goto the_end;
while (ret >= 0) {
is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
if (ret < 0) {
if (ret == AVERROR_EOF)
is->viddec.finished = is->viddec.pkt_serial;
ret = 0;
break;
}
is->frame_last_filter_delay = av_gettime_relative() / 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;
tb = av_buffersink_get_time_base(filt_out);
#endif
duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
ret = queue_picture(is, frame, pts, duration, frame->pkt_pos, is->viddec.pkt_serial);
av_frame_unref(frame);
#if CONFIG_AVFILTER
if (is->videoq.serial != is->viddec.pkt_serial)
break;
}
#endif
if (ret < 0)
goto the_end;
}
the_end:
#if CONFIG_AVFILTER
avfilter_graph_free(&graph);
#endif
av_frame_free(&frame);
return 0;
}
static int subtitle_thread(void *arg)
{
VideoState *is = arg;
Frame *sp;
int got_subtitle;
double pts;
for (;;) {
if (!(sp = frame_queue_peek_writable(&is->subpq)))
return 0;
if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
break;
pts = 0;
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;
sp->serial = is->subdec.pkt_serial;
sp->width = is->subdec.avctx->width;
sp->height = is->subdec.avctx->height;
sp->uploaded = 0;
/* now we can update the picture count */
frame_queue_push(&is->subpq);
} else if (got_subtitle) {
avsubtitle_free(&sp->sub);
}
}
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_clock(&is->audclk) - get_master_clock(is);
if (!isnan(diff) && 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 = av_clip(wanted_nb_samples, min_nb_samples, max_nb_samples);
}
av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
diff, avg_diff, wanted_nb_samples - nb_samples,
is->audio_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 return its uncompressed size.
*
* The processed audio frame is decoded, converted if required, and
* stored in is->audio_buf, with size in bytes given by the return
* value.
*/
static int audio_decode_frame(VideoState *is)
{
int data_size, resampled_data_size;
int64_t dec_channel_layout;
av_unused double audio_clock0;
int wanted_nb_samples;
Frame *af;
if (is->paused)
return -1;
do {
#if defined(_WIN32)
while (frame_queue_nb_remaining(&is->sampq) == 0) {
if ((av_gettime_relative() - audio_callback_time) > 1000000LL * is->audio_hw_buf_size / is->audio_tgt.bytes_per_sec / 2)
return -1;
av_usleep (1000);
}
#endif
if (!(af = frame_queue_peek_readable(&is->sampq)))
return -1;
frame_queue_next(&is->sampq);
} while (af->serial != is->audioq.serial);
data_size = av_samples_get_buffer_size(NULL, af->frame->channels,
af->frame->nb_samples,
af->frame->format, 1);
dec_channel_layout =
(af->frame->channel_layout && af->frame->channels == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
af->frame->channel_layout : av_get_default_channel_layout(af->frame->channels);
wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
if (af->frame->format != is->audio_src.fmt ||
dec_channel_layout != is->audio_src.channel_layout ||
af->frame->sample_rate != is->audio_src.freq ||
(wanted_nb_samples != af->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, af->frame->format, af->frame->sample_rate,
0, NULL);
if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
av_log(NULL, AV_LOG_ERROR,
"Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), af->frame->channels,
is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
swr_free(&is->swr_ctx);
return -1;
}
is->audio_src.channel_layout = dec_channel_layout;
is->audio_src.channels = af->frame->channels;
is->audio_src.freq = af->frame->sample_rate;
is->audio_src.fmt = af->frame->format;
}
if (is->swr_ctx) {
const uint8_t **in = (const uint8_t **)af->frame->extended_data;
uint8_t **out = &is->audio_buf1;
int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
int out_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
int len2;
if (out_size < 0) {
av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
return -1;
}
if (wanted_nb_samples != af->frame->nb_samples) {
if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
return -1;
}
}
av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
if (!is->audio_buf1)
return AVERROR(ENOMEM);
len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
if (len2 < 0) {
av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
return -1;
}
if (len2 == out_count) {
av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
if (swr_init(is->swr_ctx) < 0)
swr_free(&is->swr_ctx);
}
is->audio_buf = is->audio_buf1;
resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
} else {
is->audio_buf = af->frame->data[0];
resampled_data_size = data_size;
}
audio_clock0 = is->audio_clock;
/* update the audio clock with the pts */
if (!isnan(af->pts))
is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
else
is->audio_clock = NAN;
is->audio_clock_serial = af->serial;
#ifdef DEBUG
{
static double last_clock;
printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
is->audio_clock - last_clock,
is->audio_clock, audio_clock0);
last_clock = is->audio_clock;
}
#endif
return resampled_data_size;
}
/* prepare a new audio buffer */
static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
{
VideoState *is = opaque;
int audio_size, len1;
audio_callback_time = av_gettime_relative();
while (len > 0) {
if (is->audio_buf_index >= is->audio_buf_size) {
audio_size = audio_decode_frame(is);
if (audio_size < 0) {
/* if error, just output silence */
is->audio_buf = NULL;
is->audio_buf_size = SDL_AUDIO_MIN_BUFFER_SIZE / is->audio_tgt.frame_size * is->audio_tgt.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;
if (!is->muted && is->audio_buf && is->audio_volume == SDL_MIX_MAXVOLUME)
memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
else {
memset(stream, 0, len1);
if (!is->muted && is->audio_buf)
SDL_MixAudioFormat(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, AUDIO_S16SYS, len1, is->audio_volume);
}
len -= len1;
stream += len1;
is->audio_buf_index += len1;
}
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. */
if (!isnan(is->audio_clock)) {
set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / is->audio_tgt.bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
sync_clock_to_slave(&is->extclk, &is->audclk);
}
}
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;
static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
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_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
wanted_spec.channels = wanted_nb_channels;
wanted_spec.freq = wanted_sample_rate;
if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
return -1;
}
while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
next_sample_rate_idx--;
wanted_spec.format = AUDIO_S16SYS;
wanted_spec.silence = 0;
wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
wanted_spec.callback = sdl_audio_callback;
wanted_spec.userdata = opaque;
while (!(audio_dev = SDL_OpenAudioDevice(NULL, 0, &wanted_spec, &spec, SDL_AUDIO_ALLOW_FREQUENCY_CHANGE | SDL_AUDIO_ALLOW_CHANNELS_CHANGE))) {
av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
wanted_spec.channels, wanted_spec.freq, SDL_GetError());
wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
if (!wanted_spec.channels) {
wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
wanted_spec.channels = wanted_nb_channels;
if (!wanted_spec.freq) {
av_log(NULL, AV_LOG_ERROR,
"No more 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) {
av_log(NULL, AV_LOG_ERROR,
"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) {
av_log(NULL, AV_LOG_ERROR,
"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;
audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
audio_hw_params->bytes_per_sec = av_samples_get_buffer_size(NULL, audio_hw_params->channels, audio_hw_params->freq, audio_hw_params->fmt, 1);
if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
return -1;
}
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;
const char *forced_codec_name = NULL;
AVDictionary *opts = NULL;
AVDictionaryEntry *t = NULL;
int sample_rate, nb_channels;
int64_t channel_layout;
int ret = 0;
int stream_lowres = lowres;
if (stream_index < 0 || stream_index >= ic->nb_streams)
return -1;
avctx = avcodec_alloc_context3(NULL);
if (!avctx)
return AVERROR(ENOMEM);
ret = avcodec_parameters_to_context(avctx, ic->streams[stream_index]->codecpar);
if (ret < 0)
goto fail;
avctx->pkt_timebase = ic->streams[stream_index]->time_base;
codec = avcodec_find_decoder(avctx->codec_id);
switch(avctx->codec_type){
case AVMEDIA_TYPE_AUDIO : is->last_audio_stream = stream_index; forced_codec_name = audio_codec_name; break;
case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
case AVMEDIA_TYPE_VIDEO : is->last_video_stream = stream_index; forced_codec_name = video_codec_name; break;
}
if (forced_codec_name)
codec = avcodec_find_decoder_by_name(forced_codec_name);
if (!codec) {
if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
"No codec could be found with name '%s'\n", forced_codec_name);
else av_log(NULL, AV_LOG_WARNING,
"No decoder could be found for codec %s\n", avcodec_get_name(avctx->codec_id));
ret = AVERROR(EINVAL);
goto fail;
}
avctx->codec_id = codec->id;
if (stream_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);
stream_lowres = codec->max_lowres;
}
avctx->lowres = stream_lowres;
if (fast)
avctx->flags2 |= AV_CODEC_FLAG2_FAST;
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 (stream_lowres)
av_dict_set_int(&opts, "lowres", stream_lowres, 0);
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
av_dict_set(&opts, "refcounted_frames", "1", 0);
if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
goto fail;
}
if ((t = av_dict_get(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->eof = 0;
ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
switch (avctx->codec_type) {
case AVMEDIA_TYPE_AUDIO:
#if CONFIG_AVFILTER
{
AVFilterContext *sink;
is->audio_filter_src.freq = avctx->sample_rate;