PerThreadContext Struct Reference

Context used by codec threads and stored in their AVCodecContext thread_opaque. More...

Public Types
enum	{ STATE_INPUT_READY, STATE_SETTING_UP, STATE_GET_BUFFER, STATE_SETUP_FINISHED }

Data Fields
struct FrameThreadContext *	parent
pthread_t	thread
int	thread_init
pthread_cond_t	input_cond
	Used to wait for a new packet from the main thread.
pthread_cond_t	progress_cond
	Used by child threads to wait for progress to change.
pthread_cond_t	output_cond
	Used by the main thread to wait for frames to finish.
pthread_mutex_t	mutex
	Mutex used to protect the contents of the PerThreadContext.
pthread_mutex_t	progress_mutex
	Mutex used to protect frame progress values and progress_cond.
AVCodecContext *	avctx
	Context used to decode packets passed to this thread.
AVPacket	avpkt
	Input packet (for decoding) or output (for encoding).
int	allocated_buf_size
	Size allocated for avpkt.data.
AVFrame	frame
	Output frame (for decoding) or input (for encoding).
int	got_frame
	The output of got_picture_ptr from the last avcodec_decode_video() call.
int	result
	The result of the last codec decode/encode() call.
enum PerThreadContext:: { ... }	state
AVFrame	released_buffers [MAX_BUFFERS]
	Array of frames passed to ff_thread_release_buffer().
int	num_released_buffers
volatile int	progress [MAX_BUFFERS][2]
	Array of progress values used by ff_thread_get_buffer().
volatile uint8_t	progress_used [MAX_BUFFERS]
AVFrame *	requested_frame
	AVFrame the codec passed to get_buffer()

Detailed Description

Context used by codec threads and stored in their AVCodecContext thread_opaque.

Definition at line 95 of file pthread.c.

Member Enumeration Documentation

anonymous enum

Enumerator:

STATE_INPUT_READY	Set when the thread is awaiting a packet.
STATE_SETTING_UP	Set before the codec has called ff_thread_finish_setup().
STATE_GET_BUFFER	Set when the codec calls get_buffer(). State is returned to STATE_SETTING_UP afterwards.
STATE_SETUP_FINISHED	Set after the codec has called ff_thread_finish_setup().

Definition at line 116 of file pthread.c.

Field Documentation

struct FrameThreadContext* PerThreadContext::parent

Definition at line 96 of file pthread.c.

Referenced by ff_thread_get_buffer(), ff_thread_release_buffer(), frame_thread_init(), frame_worker_thread(), release_delayed_buffers(), and submit_packet().

pthread_t PerThreadContext::thread

Definition at line 98 of file pthread.c.

Referenced by frame_thread_free(), and frame_thread_init().

int PerThreadContext::thread_init

Definition at line 99 of file pthread.c.

Referenced by frame_thread_free(), and frame_thread_init().

pthread_cond_t PerThreadContext::input_cond

Used to wait for a new packet from the main thread.

Definition at line 100 of file pthread.c.

Referenced by frame_thread_free(), frame_thread_init(), frame_worker_thread(), and submit_packet().

pthread_cond_t PerThreadContext::progress_cond

Used by child threads to wait for progress to change.

Definition at line 101 of file pthread.c.

Referenced by ff_thread_await_progress(), ff_thread_finish_setup(), ff_thread_get_buffer(), ff_thread_report_progress(), frame_thread_free(), frame_thread_init(), frame_worker_thread(), and submit_packet().

pthread_cond_t PerThreadContext::output_cond

Used by the main thread to wait for frames to finish.

Definition at line 102 of file pthread.c.

Referenced by ff_thread_decode_frame(), frame_thread_free(), frame_thread_init(), frame_worker_thread(), and park_frame_worker_threads().

pthread_mutex_t PerThreadContext::mutex

Mutex used to protect the contents of the PerThreadContext.

Definition at line 104 of file pthread.c.

Referenced by frame_thread_free(), frame_thread_init(), frame_worker_thread(), and submit_packet().

pthread_mutex_t PerThreadContext::progress_mutex

Mutex used to protect frame progress values and progress_cond.

Definition at line 105 of file pthread.c.

Referenced by ff_thread_await_progress(), ff_thread_decode_frame(), ff_thread_finish_setup(), ff_thread_get_buffer(), ff_thread_report_progress(), frame_thread_free(), frame_thread_init(), frame_worker_thread(), park_frame_worker_threads(), and submit_packet().

AVCodecContext* PerThreadContext::avctx

Context used to decode packets passed to this thread.

Definition at line 107 of file pthread.c.

Referenced by allocate_progress(), ff_thread_decode_frame(), ff_thread_flush(), ff_thread_release_buffer(), frame_thread_free(), frame_thread_init(), frame_worker_thread(), and submit_packet().

AVPacket PerThreadContext::avpkt

Input packet (for decoding) or output (for encoding).

Definition at line 109 of file pthread.c.

Referenced by ff_thread_decode_frame(), frame_thread_free(), frame_thread_init(), frame_worker_thread(), and submit_packet().

int PerThreadContext::allocated_buf_size

Size allocated for avpkt.data.

Definition at line 110 of file pthread.c.

Referenced by submit_packet().

AVFrame PerThreadContext::frame

Output frame (for decoding) or input (for encoding).

Definition at line 112 of file pthread.c.

Referenced by ff_thread_decode_frame(), and frame_worker_thread().

int PerThreadContext::got_frame

The output of got_picture_ptr from the last avcodec_decode_video() call.

Definition at line 113 of file pthread.c.

Referenced by ff_thread_decode_frame(), ff_thread_flush(), frame_worker_thread(), and park_frame_worker_threads().

int PerThreadContext::result

The result of the last codec decode/encode() call.

Definition at line 114 of file pthread.c.

Referenced by ff_thread_decode_frame(), ff_thread_get_buffer(), frame_worker_thread(), and submit_packet().

enum { ... } PerThreadContext::state

Referenced by ff_thread_can_start_frame(), ff_thread_decode_frame(), ff_thread_finish_setup(), ff_thread_get_buffer(), frame_worker_thread(), park_frame_worker_threads(), and submit_packet().

AVFrame PerThreadContext::released_buffers[MAX_BUFFERS]

Array of frames passed to ff_thread_release_buffer().

Frames are released after all threads referencing them are finished.

Definition at line 130 of file pthread.c.

Referenced by ff_thread_release_buffer(), and release_delayed_buffers().

int PerThreadContext::num_released_buffers

Definition at line 131 of file pthread.c.

Referenced by ff_thread_release_buffer(), and release_delayed_buffers().

volatile int PerThreadContext::progress[MAX_BUFFERS][2]

Array of progress values used by ff_thread_get_buffer().

Definition at line 136 of file pthread.c.

Referenced by allocate_progress(), frame_worker_thread(), and free_progress().

volatile uint8_t PerThreadContext::progress_used[MAX_BUFFERS]

Definition at line 137 of file pthread.c.

Referenced by allocate_progress(), frame_worker_thread(), and free_progress().

AVFrame* PerThreadContext::requested_frame

AVFrame the codec passed to get_buffer()

Definition at line 139 of file pthread.c.

Referenced by ff_thread_get_buffer(), and submit_packet().

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The documentation for this struct was generated from the following file:

• libavcodec/pthread.c