FFmpeg
frame_thread_encoder.c
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1 /*
2  * Copyright (c) 2012 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <stdatomic.h>
22 
23 #include "frame_thread_encoder.h"
24 
25 #include "libavutil/fifo.h"
26 #include "libavutil/avassert.h"
27 #include "libavutil/imgutils.h"
28 #include "libavutil/opt.h"
29 #include "libavutil/thread.h"
30 #include "avcodec.h"
31 #include "internal.h"
32 #include "thread.h"
33 
34 #define MAX_THREADS 64
35 #define BUFFER_SIZE (2*MAX_THREADS)
36 
37 typedef struct{
38  void *indata;
39  void *outdata;
40  int64_t return_code;
41  unsigned index;
42 } Task;
43 
44 typedef struct{
47 
51 
52  Task finished_tasks[BUFFER_SIZE];
55 
56  unsigned task_index;
58 
62 
63 static void * attribute_align_arg worker(void *v){
64  AVCodecContext *avctx = v;
66  AVPacket *pkt = NULL;
67 
68  while (!atomic_load(&c->exit)) {
69  int got_packet, ret;
70  AVFrame *frame;
71  Task task;
72 
73  if(!pkt) pkt = av_packet_alloc();
74  if(!pkt) continue;
76 
77  pthread_mutex_lock(&c->task_fifo_mutex);
78  while (av_fifo_size(c->task_fifo) <= 0 || atomic_load(&c->exit)) {
79  if (atomic_load(&c->exit)) {
80  pthread_mutex_unlock(&c->task_fifo_mutex);
81  goto end;
82  }
83  pthread_cond_wait(&c->task_fifo_cond, &c->task_fifo_mutex);
84  }
85  av_fifo_generic_read(c->task_fifo, &task, sizeof(task), NULL);
86  pthread_mutex_unlock(&c->task_fifo_mutex);
87  frame = task.indata;
88 
89  ret = avcodec_encode_video2(avctx, pkt, frame, &got_packet);
90  pthread_mutex_lock(&c->buffer_mutex);
92  pthread_mutex_unlock(&c->buffer_mutex);
94  if(got_packet) {
95  int ret2 = av_packet_make_refcounted(pkt);
96  if (ret >= 0 && ret2 < 0)
97  ret = ret2;
98  } else {
99  pkt->data = NULL;
100  pkt->size = 0;
101  }
102  pthread_mutex_lock(&c->finished_task_mutex);
103  c->finished_tasks[task.index].outdata = pkt; pkt = NULL;
104  c->finished_tasks[task.index].return_code = ret;
105  pthread_cond_signal(&c->finished_task_cond);
106  pthread_mutex_unlock(&c->finished_task_mutex);
107  }
108 end:
109  av_free(pkt);
110  pthread_mutex_lock(&c->buffer_mutex);
111  avcodec_close(avctx);
112  pthread_mutex_unlock(&c->buffer_mutex);
113  av_freep(&avctx);
114  return NULL;
115 }
116 
118  int i=0;
119  ThreadContext *c;
120  AVCodecContext *thread_avctx = NULL;
121 
122  if( !(avctx->thread_type & FF_THREAD_FRAME)
124  return 0;
125 
126  if( !avctx->thread_count
127  && avctx->codec_id == AV_CODEC_ID_MJPEG
128  && !(avctx->flags & AV_CODEC_FLAG_QSCALE)) {
129  av_log(avctx, AV_LOG_DEBUG,
130  "Forcing thread count to 1 for MJPEG encoding, use -thread_type slice "
131  "or a constant quantizer if you want to use multiple cpu cores\n");
132  avctx->thread_count = 1;
133  }
134  if( avctx->thread_count > 1
135  && avctx->codec_id == AV_CODEC_ID_MJPEG
136  && !(avctx->flags & AV_CODEC_FLAG_QSCALE))
137  av_log(avctx, AV_LOG_WARNING,
138  "MJPEG CBR encoding works badly with frame multi-threading, consider "
139  "using -threads 1, -thread_type slice or a constant quantizer.\n");
140 
141  if (avctx->codec_id == AV_CODEC_ID_HUFFYUV ||
142  avctx->codec_id == AV_CODEC_ID_FFVHUFF) {
143  int warn = 0;
144  int context_model = 0;
146 
147  if (con && con->value)
148  context_model = atoi(con->value);
149 
150  if (avctx->flags & AV_CODEC_FLAG_PASS1)
151  warn = 1;
152  else if(context_model > 0) {
153  AVDictionaryEntry *t = av_dict_get(options, "non_deterministic",
155  warn = !t || !t->value || !atoi(t->value) ? 1 : 0;
156  }
157  // huffyuv does not support these with multiple frame threads currently
158  if (warn) {
159  av_log(avctx, AV_LOG_WARNING,
160  "Forcing thread count to 1 for huffyuv encoding with first pass or context 1\n");
161  avctx->thread_count = 1;
162  }
163  }
164 
165  if(!avctx->thread_count) {
166  avctx->thread_count = av_cpu_count();
167  avctx->thread_count = FFMIN(avctx->thread_count, MAX_THREADS);
168  }
169 
170  if(avctx->thread_count <= 1)
171  return 0;
172 
173  if(avctx->thread_count > MAX_THREADS)
174  return AVERROR(EINVAL);
175 
178  if(!c)
179  return AVERROR(ENOMEM);
180 
181  c->parent_avctx = avctx;
182 
183  c->task_fifo = av_fifo_alloc_array(BUFFER_SIZE, sizeof(Task));
184  if(!c->task_fifo)
185  goto fail;
186 
187  pthread_mutex_init(&c->task_fifo_mutex, NULL);
188  pthread_mutex_init(&c->finished_task_mutex, NULL);
189  pthread_mutex_init(&c->buffer_mutex, NULL);
190  pthread_cond_init(&c->task_fifo_cond, NULL);
191  pthread_cond_init(&c->finished_task_cond, NULL);
192  atomic_init(&c->exit, 0);
193 
194  for(i=0; i<avctx->thread_count ; i++){
195  AVDictionary *tmp = NULL;
196  int ret;
197  void *tmpv;
198  thread_avctx = avcodec_alloc_context3(avctx->codec);
199  if(!thread_avctx)
200  goto fail;
201  tmpv = thread_avctx->priv_data;
202  *thread_avctx = *avctx;
203  thread_avctx->priv_data = tmpv;
204  thread_avctx->internal = NULL;
205  thread_avctx->hw_frames_ctx = NULL;
206  ret = av_opt_copy(thread_avctx, avctx);
207  if (ret < 0)
208  goto fail;
209  if (avctx->codec->priv_class) {
210  int ret = av_opt_copy(thread_avctx->priv_data, avctx->priv_data);
211  if (ret < 0)
212  goto fail;
213  } else
214  memcpy(thread_avctx->priv_data, avctx->priv_data, avctx->codec->priv_data_size);
215  thread_avctx->thread_count = 1;
216  thread_avctx->active_thread_type &= ~FF_THREAD_FRAME;
217 
218  av_dict_copy(&tmp, options, 0);
219  av_dict_set(&tmp, "threads", "1", 0);
220  if(avcodec_open2(thread_avctx, avctx->codec, &tmp) < 0) {
221  av_dict_free(&tmp);
222  goto fail;
223  }
224  av_dict_free(&tmp);
225  av_assert0(!thread_avctx->internal->frame_thread_encoder);
226  thread_avctx->internal->frame_thread_encoder = c;
227  if(pthread_create(&c->worker[i], NULL, worker, thread_avctx)) {
228  goto fail;
229  }
230  }
231 
233 
234  return 0;
235 fail:
236  avcodec_close(thread_avctx);
237  av_freep(&thread_avctx);
238  avctx->thread_count = i;
239  av_log(avctx, AV_LOG_ERROR, "ff_frame_thread_encoder_init failed\n");
241  return -1;
242 }
243 
245  int i;
247 
248  pthread_mutex_lock(&c->task_fifo_mutex);
249  atomic_store(&c->exit, 1);
250  pthread_cond_broadcast(&c->task_fifo_cond);
251  pthread_mutex_unlock(&c->task_fifo_mutex);
252 
253  for (i=0; i<avctx->thread_count; i++) {
254  pthread_join(c->worker[i], NULL);
255  }
256 
257  while (av_fifo_size(c->task_fifo) > 0) {
258  Task task;
259  AVFrame *frame;
260  av_fifo_generic_read(c->task_fifo, &task, sizeof(task), NULL);
261  frame = task.indata;
263  task.indata = NULL;
264  }
265 
266  for (i=0; i<BUFFER_SIZE; i++) {
267  if (c->finished_tasks[i].outdata != NULL) {
268  AVPacket *pkt = c->finished_tasks[i].outdata;
270  c->finished_tasks[i].outdata = NULL;
271  }
272  }
273 
274  pthread_mutex_destroy(&c->task_fifo_mutex);
275  pthread_mutex_destroy(&c->finished_task_mutex);
276  pthread_mutex_destroy(&c->buffer_mutex);
277  pthread_cond_destroy(&c->task_fifo_cond);
278  pthread_cond_destroy(&c->finished_task_cond);
279  av_fifo_freep(&c->task_fifo);
281 }
282 
283 int ff_thread_video_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet_ptr){
285  Task task;
286  int ret;
287 
288  av_assert1(!*got_packet_ptr);
289 
290  if(frame){
291  AVFrame *new = av_frame_alloc();
292  if(!new)
293  return AVERROR(ENOMEM);
294  ret = av_frame_ref(new, frame);
295  if(ret < 0) {
296  av_frame_free(&new);
297  return ret;
298  }
299 
300  task.index = c->task_index;
301  task.indata = (void*)new;
302  pthread_mutex_lock(&c->task_fifo_mutex);
303  av_fifo_generic_write(c->task_fifo, &task, sizeof(task), NULL);
304  pthread_cond_signal(&c->task_fifo_cond);
305  pthread_mutex_unlock(&c->task_fifo_mutex);
306 
307  c->task_index = (c->task_index+1) % BUFFER_SIZE;
308  }
309 
310  pthread_mutex_lock(&c->finished_task_mutex);
311  if (c->task_index == c->finished_task_index ||
312  (frame && !c->finished_tasks[c->finished_task_index].outdata &&
313  (c->task_index - c->finished_task_index) % BUFFER_SIZE <= avctx->thread_count)) {
314  pthread_mutex_unlock(&c->finished_task_mutex);
315  return 0;
316  }
317 
318  while (!c->finished_tasks[c->finished_task_index].outdata) {
319  pthread_cond_wait(&c->finished_task_cond, &c->finished_task_mutex);
320  }
321  task = c->finished_tasks[c->finished_task_index];
322  *pkt = *(AVPacket*)(task.outdata);
323  if(pkt->data)
324  *got_packet_ptr = 1;
325  av_freep(&c->finished_tasks[c->finished_task_index].outdata);
326  c->finished_task_index = (c->finished_task_index+1) % BUFFER_SIZE;
327  pthread_mutex_unlock(&c->finished_task_mutex);
328 
329  return task.return_code;
330 }
AV_CODEC_CAP_INTRA_ONLY
#define AV_CODEC_CAP_INTRA_ONLY
Codec is intra only.
Definition: avcodec.h:1067
avcodec_close
int avcodec_close(AVCodecContext *avctx)
Close a given AVCodecContext and free all the data associated with it (but not the AVCodecContext its...
Definition: utils.c:1117
pthread_mutex_t
_fmutex pthread_mutex_t
Definition: os2threads.h:49
pthread_join
static av_always_inline int pthread_join(pthread_t thread, void **value_ptr)
Definition: os2threads.h:90
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
atomic_store
#define atomic_store(object, desired)
Definition: stdatomic.h:85
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
AV_CODEC_ID_HUFFYUV
@ AV_CODEC_ID_HUFFYUV
Definition: avcodec.h:243
av_fifo_generic_write
int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int(*func)(void *, void *, int))
Feed data from a user-supplied callback to an AVFifoBuffer.
Definition: fifo.c:122
AVCodec::priv_class
const AVClass * priv_class
AVClass for the private context.
Definition: avcodec.h:3507
thread.h
pthread_mutex_init
static av_always_inline int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)
Definition: os2threads.h:100
AV_CODEC_FLAG_QSCALE
#define AV_CODEC_FLAG_QSCALE
Use fixed qscale.
Definition: avcodec.h:850
BUFFER_SIZE
#define BUFFER_SIZE
Definition: frame_thread_encoder.c:35
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
end
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:26
AVCodec::capabilities
int capabilities
Codec capabilities.
Definition: avcodec.h:3500
internal.h
AVPacket::data
uint8_t * data
Definition: avcodec.h:1477
AVCodecInternal::frame_thread_encoder
void * frame_thread_encoder
Definition: internal.h:180
atomic_int
intptr_t atomic_int
Definition: stdatomic.h:55
ff_frame_thread_encoder_init
int ff_frame_thread_encoder_init(AVCodecContext *avctx, AVDictionary *options)
Initialize frame thread encoder.
Definition: frame_thread_encoder.c:117
AVDictionary
Definition: dict.c:30
av_fifo_generic_read
int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size, void(*func)(void *, void *, int))
Feed data from an AVFifoBuffer to a user-supplied callback.
Definition: fifo.c:213
ThreadContext::buffer_mutex
pthread_mutex_t buffer_mutex
Definition: frame_thread_encoder.c:46
thread.h
av_packet_free
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: avpacket.c:62
AVFifoBuffer
Definition: fifo.h:31
fifo.h
AVCodecContext::codec
const struct AVCodec * codec
Definition: avcodec.h:1574
fail
#define fail()
Definition: checkasm.h:120
AVCodecContext::thread_count
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
Definition: avcodec.h:2824
Task::index
unsigned index
Definition: frame_thread_encoder.c:41
ThreadContext::parent_avctx
AVCodecContext * parent_avctx
Definition: frame_thread_encoder.c:45
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1645
MAX_THREADS
#define MAX_THREADS
Definition: frame_thread_encoder.c:34
ThreadContext::finished_task_index
unsigned finished_task_index
Definition: frame_thread_encoder.c:57
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:189
Task::indata
void * indata
Definition: frame_thread_encoder.c:38
avassert.h
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
frame_thread_encoder.h
av_dict_get
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
ff_frame_thread_encoder_free
void ff_frame_thread_encoder_free(AVCodecContext *avctx)
Definition: frame_thread_encoder.c:244
avcodec_alloc_context3
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
Definition: options.c:156
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
AVCodecContext::thread_type
int thread_type
Which multithreading methods to use.
Definition: avcodec.h:2834
ThreadContext::exit
atomic_int exit
Definition: frame_thread_encoder.c:60
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
AV_CODEC_ID_FFVHUFF
@ AV_CODEC_ID_FFVHUFF
Definition: avcodec.h:285
atomic_load
#define atomic_load(object)
Definition: stdatomic.h:93
pthread_cond_broadcast
static av_always_inline int pthread_cond_broadcast(pthread_cond_t *cond)
Definition: os2threads.h:158
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:1575
pthread_create
static av_always_inline int pthread_create(pthread_t *thread, const pthread_attr_t *attr, void *(*start_routine)(void *), void *arg)
Definition: os2threads.h:76
ThreadContext::task_fifo_mutex
pthread_mutex_t task_fifo_mutex
Definition: frame_thread_encoder.c:49
NULL
#define NULL
Definition: coverity.c:32
AVCodecContext::internal
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:1600
avcodec_open2
int avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
Definition: utils.c:565
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
pthread_mutex_unlock
#define pthread_mutex_unlock(a)
Definition: ffprobe.c:65
av_cpu_count
int av_cpu_count(void)
Definition: cpu.c:267
options
const OptionDef options[]
AVPacket::size
int size
Definition: avcodec.h:1478
av_frame_ref
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:443
ThreadContext::task_fifo
AVFifoBuffer * task_fifo
Definition: frame_thread_encoder.c:48
Task::outdata
void * outdata
Definition: frame_thread_encoder.c:39
ThreadContext::task_index
unsigned task_index
Definition: frame_thread_encoder.c:56
FFMIN
#define FFMIN(a, b)
Definition: common.h:96
avcodec_encode_video2
attribute_deprecated int avcodec_encode_video2(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Encode a frame of video.
Definition: encode.c:258
av_packet_make_refcounted
int av_packet_make_refcounted(AVPacket *pkt)
Ensure the data described by a given packet is reference counted.
Definition: avpacket.c:663
av_packet_alloc
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
Definition: avpacket.c:51
av_dict_free
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
Definition: dict.c:203
Task::return_code
int64_t return_code
Definition: frame_thread_encoder.c:40
pthread_t
Definition: os2threads.h:40
pthread_cond_destroy
static av_always_inline int pthread_cond_destroy(pthread_cond_t *cond)
Definition: os2threads.h:140
FF_THREAD_FRAME
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:2835
pthread_mutex_destroy
static av_always_inline int pthread_mutex_destroy(pthread_mutex_t *mutex)
Definition: os2threads.h:108
AV_CODEC_ID_MJPEG
@ AV_CODEC_ID_MJPEG
Definition: avcodec.h:225
ThreadContext::finished_task_cond
pthread_cond_t finished_task_cond
Definition: frame_thread_encoder.c:54
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
av_fifo_alloc_array
AVFifoBuffer * av_fifo_alloc_array(size_t nmemb, size_t size)
Initialize an AVFifoBuffer.
Definition: fifo.c:49
ff_thread_video_encode_frame
int ff_thread_video_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet_ptr)
Definition: frame_thread_encoder.c:283
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:553
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
pthread_cond_t
Definition: os2threads.h:54
worker
static void *attribute_align_arg worker(void *v)
Definition: frame_thread_encoder.c:63
AVCodec::priv_data_size
int priv_data_size
Definition: avcodec.h:3529
AVCodecContext::hw_frames_ctx
AVBufferRef * hw_frames_ctx
A reference to the AVHWFramesContext describing the input (for encoding) or output (decoding) frames.
Definition: avcodec.h:3262
avcodec.h
ThreadContext::finished_task_mutex
pthread_mutex_t finished_task_mutex
Definition: frame_thread_encoder.c:53
ret
ret
Definition: filter_design.txt:187
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
pthread_cond_signal
static av_always_inline int pthread_cond_signal(pthread_cond_t *cond)
Definition: os2threads.h:148
AV_DICT_MATCH_CASE
#define AV_DICT_MATCH_CASE
Only get an entry with exact-case key match.
Definition: dict.h:69
AVCodecContext
main external API structure.
Definition: avcodec.h:1565
AVCodecContext::active_thread_type
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:2843
ThreadContext
Definition: frame_thread_encoder.c:44
pkt
static AVPacket pkt
Definition: demuxing_decoding.c:54
pthread_cond_wait
static av_always_inline int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
Definition: os2threads.h:166
av_fifo_size
int av_fifo_size(const AVFifoBuffer *f)
Return the amount of data in bytes in the AVFifoBuffer, that is the amount of data you can read from ...
Definition: fifo.c:77
av_opt_copy
int av_opt_copy(void *dst, const void *src)
Copy options from src object into dest object.
Definition: opt.c:1716
av_fifo_freep
void av_fifo_freep(AVFifoBuffer **f)
Free an AVFifoBuffer and reset pointer to NULL.
Definition: fifo.c:63
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
AVDictionaryEntry
Definition: dict.h:81
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:1592
AVPacket
This structure stores compressed data.
Definition: avcodec.h:1454
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
av_dict_copy
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
Task
Definition: frame_thread_encoder.c:37
imgutils.h
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
pthread_cond_init
static av_always_inline int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
Definition: os2threads.h:129
AVDictionaryEntry::value
char * value
Definition: dict.h:83
atomic_init
#define atomic_init(obj, value)
Definition: stdatomic.h:33
ThreadContext::task_fifo_cond
pthread_cond_t task_fifo_cond
Definition: frame_thread_encoder.c:50
AV_CODEC_FLAG_PASS1
#define AV_CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:871
av_init_packet
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
Definition: avpacket.c:33
pthread_mutex_lock
#define pthread_mutex_lock(a)
Definition: ffprobe.c:61