FFmpeg: PerThreadContext Struct Reference

Context used by codec threads and stored in their AVCodecInternal thread_ctx. More...

Public Types
enum	{ STATE_INPUT_READY, STATE_SETTING_UP, STATE_GET_BUFFER, STATE_GET_FORMAT, 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).

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
	Array of frames passed to ff_thread_release_buffer().

int	num_released_buffers

int	released_buffers_allocated

AVFrame *	requested_frame
	AVFrame the codec passed to get_buffer()

int	requested_flags
	flags passed to get_buffer() for requested_frame

enum AVPixelFormat *	available_formats
	Format array for get_format()

enum AVPixelFormat	result_format
	get_format() result

Detailed Description

Context used by codec threads and stored in their AVCodecInternal thread_ctx.

Definition at line 53 of file pthread_frame.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_GET_FORMAT	Set when the codec calls get_format(). State is returned to STATE_SETTING_UP afterwards.
STATE_SETUP_FINISHED	Set after the codec has called ff_thread_finish_setup().

Definition at line 73 of file pthread_frame.c.

Field Documentation

struct FrameThreadContext* PerThreadContext::parent

Definition at line 54 of file pthread_frame.c.

Referenced by ff_frame_thread_init(), ff_thread_release_buffer(), frame_worker_thread(), release_delayed_buffers(), submit_packet(), and thread_get_buffer_internal().

pthread_t PerThreadContext::thread

Definition at line 56 of file pthread_frame.c.

Referenced by ff_frame_thread_free(), and ff_frame_thread_init().

int PerThreadContext::thread_init

Definition at line 57 of file pthread_frame.c.

Referenced by ff_frame_thread_free(), and ff_frame_thread_init().

pthread_cond_t PerThreadContext::input_cond

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

Definition at line 58 of file pthread_frame.c.

Referenced by ff_frame_thread_free(), ff_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 59 of file pthread_frame.c.

Referenced by ff_frame_thread_free(), ff_frame_thread_init(), ff_thread_await_progress(), ff_thread_finish_setup(), ff_thread_get_format(), ff_thread_report_progress(), frame_worker_thread(), submit_packet(), and thread_get_buffer_internal().

pthread_cond_t PerThreadContext::output_cond

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

Definition at line 60 of file pthread_frame.c.

Referenced by ff_frame_thread_free(), ff_frame_thread_init(), ff_thread_decode_frame(), 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 62 of file pthread_frame.c.

Referenced by ff_frame_thread_free(), ff_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 63 of file pthread_frame.c.

Referenced by ff_frame_thread_free(), ff_frame_thread_init(), ff_thread_await_progress(), ff_thread_decode_frame(), ff_thread_finish_setup(), ff_thread_get_format(), ff_thread_report_progress(), frame_worker_thread(), park_frame_worker_threads(), submit_packet(), and thread_get_buffer_internal().

AVCodecContext* PerThreadContext::avctx

Context used to decode packets passed to this thread.

Definition at line 65 of file pthread_frame.c.

Referenced by ff_frame_thread_free(), ff_frame_thread_init(), ff_thread_decode_frame(), ff_thread_flush(), frame_worker_thread(), release_delayed_buffers(), and submit_packet().

AVPacket PerThreadContext::avpkt

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

Definition at line 67 of file pthread_frame.c.

Referenced by ff_frame_thread_free(), ff_frame_thread_init(), ff_thread_decode_frame(), frame_worker_thread(), and submit_packet().

AVFrame* PerThreadContext::frame

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

Definition at line 69 of file pthread_frame.c.

Referenced by ff_frame_thread_free(), ff_frame_thread_init(), ff_thread_decode_frame(), ff_thread_flush(), and frame_worker_thread().

int PerThreadContext::got_frame

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

Definition at line 70 of file pthread_frame.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 71 of file pthread_frame.c.

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

enum { ... } PerThreadContext::state

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

AVFrame* PerThreadContext::released_buffers

Array of frames passed to ff_thread_release_buffer().

Frames are released after all threads referencing them are finished.

Definition at line 91 of file pthread_frame.c.

Referenced by ff_frame_thread_free(), ff_thread_release_buffer(), and release_delayed_buffers().

int PerThreadContext::num_released_buffers

Definition at line 92 of file pthread_frame.c.

Referenced by ff_thread_release_buffer(), and release_delayed_buffers().

int PerThreadContext::released_buffers_allocated

Definition at line 93 of file pthread_frame.c.

Referenced by ff_thread_release_buffer().

AVFrame* PerThreadContext::requested_frame

AVFrame the codec passed to get_buffer()

Definition at line 95 of file pthread_frame.c.

Referenced by submit_packet(), and thread_get_buffer_internal().

int PerThreadContext::requested_flags

flags passed to get_buffer() for requested_frame

Definition at line 96 of file pthread_frame.c.

Referenced by submit_packet(), and thread_get_buffer_internal().

enum AVPixelFormat* PerThreadContext::available_formats

Format array for get_format()

Definition at line 98 of file pthread_frame.c.

Referenced by ff_thread_get_format(), and submit_packet().

enum AVPixelFormat PerThreadContext::result_format

get_format() result

Definition at line 99 of file pthread_frame.c.

Referenced by ff_thread_get_format(), and submit_packet().

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

libavcodec/pthread_frame.c