247 lines
7.6 KiB
C
247 lines
7.6 KiB
C
|
/******************************************************************************
|
||
|
|
Copyright (C) 2013-2014 by Hugh Bailey <obs.jim@gmail.com>
|
||
|
|
|
||
|
|
This program is free software: you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU General Public License as published by
|
||
|
|
the Free Software Foundation, either version 2 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
This program 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 General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @file
|
||
|
|
* @brief header for modules implementing encoders.
|
||
|
|
*
|
||
|
|
* Encoders are modules that implement some codec that can be used by libobs
|
||
|
|
* to process output data.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/** Specifies the encoder type */
|
||
|
|
enum obs_encoder_type {
|
||
|
|
OBS_ENCODER_AUDIO, /**< The encoder provides an audio codec */
|
||
|
|
OBS_ENCODER_VIDEO /**< The encoder provides a video codec */
|
||
|
|
};
|
||
|
|
|
||
|
|
/** Encoder output packet */
|
||
|
|
struct encoder_packet {
|
||
|
|
uint8_t *data; /**< Packet data */
|
||
|
|
size_t size; /**< Packet size */
|
||
|
|
|
||
|
|
int64_t pts; /**< Presentation timestamp */
|
||
|
|
int64_t dts; /**< Decode timestamp */
|
||
|
|
|
||
|
|
int32_t timebase_num; /**< Timebase numerator */
|
||
|
|
int32_t timebase_den; /**< Timebase denominator */
|
||
|
|
|
||
|
|
enum obs_encoder_type type; /**< Encoder type */
|
||
|
|
|
||
|
|
bool keyframe; /**< Is a keyframe */
|
||
|
|
|
||
|
|
/* ---------------------------------------------------------------- */
|
||
|
|
/* Internal video variables (will be parsed automatically) */
|
||
|
|
|
||
|
|
/* DTS in microseconds */
|
||
|
|
int64_t dts_usec;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Packet priority
|
||
|
|
*
|
||
|
|
* This is generally use by video encoders to specify the priority
|
||
|
|
* of the packet.
|
||
|
|
*/
|
||
|
|
int priority;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Dropped packet priority
|
||
|
|
*
|
||
|
|
* If this packet needs to be dropped, the next packet must be of this
|
||
|
|
* priority or higher to continue transmission.
|
||
|
|
*/
|
||
|
|
int drop_priority;
|
||
|
|
|
||
|
|
/** Audio track index (used with outputs) */
|
||
|
|
size_t track_idx;
|
||
|
|
|
||
|
|
/** Encoder from which the track originated from */
|
||
|
|
obs_encoder_t *encoder;
|
||
|
|
};
|
||
|
|
|
||
|
|
/** Encoder input frame */
|
||
|
|
struct encoder_frame {
|
||
|
|
/** Data for the frame/audio */
|
||
|
|
uint8_t *data[MAX_AV_PLANES];
|
||
|
|
|
||
|
|
/** size of each plane */
|
||
|
|
uint32_t linesize[MAX_AV_PLANES];
|
||
|
|
|
||
|
|
/** Number of frames (audio only) */
|
||
|
|
uint32_t frames;
|
||
|
|
|
||
|
|
/** Presentation timestamp */
|
||
|
|
int64_t pts;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encoder interface
|
||
|
|
*
|
||
|
|
* Encoders have a limited usage with OBS. You are not generally supposed to
|
||
|
|
* implement every encoder out there. Generally, these are limited or specific
|
||
|
|
* encoders for h264/aac for streaming and recording. It doesn't have to be
|
||
|
|
* *just* h264 or aac of course, but generally those are the expected encoders.
|
||
|
|
*
|
||
|
|
* That being said, other encoders will be kept in mind for future use.
|
||
|
|
*/
|
||
|
|
struct obs_encoder_info {
|
||
|
|
/* ----------------------------------------------------------------- */
|
||
|
|
/* Required implementation*/
|
||
|
|
|
||
|
|
/** Specifies the named identifier of this encoder */
|
||
|
|
const char *id;
|
||
|
|
|
||
|
|
/** Specifies the encoder type (video or audio) */
|
||
|
|
enum obs_encoder_type type;
|
||
|
|
|
||
|
|
/** Specifies the codec */
|
||
|
|
const char *codec;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the full translated name of this encoder
|
||
|
|
*
|
||
|
|
* @param type_data The type_data variable of this structure
|
||
|
|
* @return Translated name of the encoder
|
||
|
|
*/
|
||
|
|
const char *(*get_name)(void *type_data);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates the encoder with the specified settings
|
||
|
|
*
|
||
|
|
* @param settings Settings for the encoder
|
||
|
|
* @param encoder OBS encoder context
|
||
|
|
* @return Data associated with this encoder context, or
|
||
|
|
* NULL if initialization failed.
|
||
|
|
*/
|
||
|
|
void *(*create)(obs_data_t *settings, obs_encoder_t *encoder);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Destroys the encoder data
|
||
|
|
*
|
||
|
|
* @param data Data associated with this encoder context
|
||
|
|
*/
|
||
|
|
void (*destroy)(void *data);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Encodes frame(s), and outputs encoded packets as they become
|
||
|
|
* available.
|
||
|
|
*
|
||
|
|
* @param data Data associated with this encoder
|
||
|
|
* context
|
||
|
|
* @param[in] frame Raw audio/video data to encode
|
||
|
|
* @param[out] packet Encoder packet output, if any
|
||
|
|
* @param[out] received_packet Set to true if a packet was received,
|
||
|
|
* false otherwise
|
||
|
|
* @return true if successful, false otherwise.
|
||
|
|
*/
|
||
|
|
bool (*encode)(void *data, struct encoder_frame *frame,
|
||
|
|
struct encoder_packet *packet, bool *received_packet);
|
||
|
|
|
||
|
|
/** Audio encoder only: Returns the frame size for this encoder */
|
||
|
|
size_t (*get_frame_size)(void *data);
|
||
|
|
|
||
|
|
/* ----------------------------------------------------------------- */
|
||
|
|
/* Optional implementation */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the default settings for this encoder
|
||
|
|
*
|
||
|
|
* @param[out] settings Data to assign default settings to
|
||
|
|
*/
|
||
|
|
void (*get_defaults)(obs_data_t *settings);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the property information of this encoder
|
||
|
|
*
|
||
|
|
* @return The properties data
|
||
|
|
*/
|
||
|
|
obs_properties_t *(*get_properties)(void *data);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Updates the settings for this encoder (usually used for things like
|
||
|
|
* changeing birate while active)
|
||
|
|
*
|
||
|
|
* @param data Data associated with this encoder context
|
||
|
|
* @param settings New settings for this encoder
|
||
|
|
* @return true if successful, false otherwise
|
||
|
|
*/
|
||
|
|
bool (*update)(void *data, obs_data_t *settings);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns extra data associated with this encoder (usually header)
|
||
|
|
*
|
||
|
|
* @param data Data associated with this encoder context
|
||
|
|
* @param[out] extra_data Pointer to receive the extra data
|
||
|
|
* @param[out] size Pointer to receive the size of the extra
|
||
|
|
* data
|
||
|
|
* @return true if extra data available, false
|
||
|
|
* otherwise
|
||
|
|
*/
|
||
|
|
bool (*get_extra_data)(void *data, uint8_t **extra_data, size_t *size);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the SEI data, if any
|
||
|
|
*
|
||
|
|
* @param data Data associated with this encoder context
|
||
|
|
* @param[out] sei_data Pointer to receive the SEI data
|
||
|
|
* @param[out] size Pointer to receive the SEI data size
|
||
|
|
* @return true if SEI data available, false otherwise
|
||
|
|
*/
|
||
|
|
bool (*get_sei_data)(void *data, uint8_t **sei_data, size_t *size);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns desired audio format and sample information
|
||
|
|
*
|
||
|
|
* @param data Data associated with this encoder context
|
||
|
|
* @param[in/out] info Audio format information
|
||
|
|
*/
|
||
|
|
void (*get_audio_info)(void *data, struct audio_convert_info *info);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns desired video format information
|
||
|
|
*
|
||
|
|
* @param data Data associated with this encoder context
|
||
|
|
* @param[in/out] info Video format information
|
||
|
|
*/
|
||
|
|
void (*get_video_info)(void *data, struct video_scale_info *info);
|
||
|
|
|
||
|
|
void *type_data;
|
||
|
|
void (*free_type_data)(void *type_data);
|
||
|
|
};
|
||
|
|
|
||
|
|
EXPORT void obs_register_encoder_s(const struct obs_encoder_info *info,
|
||
|
|
size_t size);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Register an encoder definition to the current obs context. This should be
|
||
|
|
* used in obs_module_load.
|
||
|
|
*
|
||
|
|
* @param info Pointer to the source definition structure.
|
||
|
|
*/
|
||
|
|
#define obs_register_encoder(info) \
|
||
|
|
obs_register_encoder_s(info, sizeof(struct obs_encoder_info))
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|