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.

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

int allocated_buf_size

Size allocated for avpkt.data.

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

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

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 93 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 114 of file pthread.c.

Field Documentation

int PerThreadContext::allocated_buf_size

Size allocated for avpkt.data.

Definition at line 108 of file pthread.c.

Referenced by submit_packet().

AVCodecContext* PerThreadContext::avctx

Context used to decode packets passed to this thread.

Definition at line 105 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 107 of file pthread.c.

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

AVFrame PerThreadContext::frame

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

Definition at line 110 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 111 of file pthread.c.

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

pthread_cond_t PerThreadContext::input_cond

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

Definition at line 98 of file pthread.c.

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

pthread_mutex_t PerThreadContext::mutex

Mutex used to protect the contents of the PerThreadContext.

Definition at line 102 of file pthread.c.

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

int PerThreadContext::num_released_buffers

Definition at line 129 of file pthread.c.

Referenced by ff_thread_release_buffer(), and release_delayed_buffers().

pthread_cond_t PerThreadContext::output_cond

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

Definition at line 100 of file pthread.c.

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

struct FrameThreadContext* PerThreadContext::parent [read]

Definition at line 94 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().

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

Array of progress values used by ff_thread_get_buffer().

Definition at line 134 of file pthread.c.

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

pthread_cond_t PerThreadContext::progress_cond

Used by child threads to wait for progress to change.

Definition at line 99 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_mutex_t PerThreadContext::progress_mutex

Mutex used to protect frame progress values and progress_cond.

Definition at line 103 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().

volatile uint8_t PerThreadContext::progress_used[MAX_BUFFERS]

Definition at line 135 of file pthread.c.

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

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 128 of file pthread.c.

Referenced by ff_thread_release_buffer(), and release_delayed_buffers().

AVFrame* PerThreadContext::requested_frame

AVFrame the codec passed to get_buffer().

Definition at line 137 of file pthread.c.

Referenced by ff_thread_get_buffer(), and submit_packet().

int PerThreadContext::result

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

Definition at line 112 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().

pthread_t PerThreadContext::thread

Definition at line 96 of file pthread.c.

Referenced by frame_thread_free(), and frame_thread_init().

int PerThreadContext::thread_init

Definition at line 97 of file pthread.c.

Referenced by frame_thread_free(), and frame_thread_init().

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

libavcodec/pthread.c

Generated on Fri Oct 26 02:50:16 2012 for FFmpeg by doxygen 1.5.8