/* GStreamer * Copyright (C) 2008 David Schleef * Copyright (C) 2012 Collabora Ltd. * Author : Edward Hervey * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifndef __GST_VIDEO_H__ #include #endif #ifndef _GST_VIDEO_UTILS_H_ #define _GST_VIDEO_UTILS_H_ #include #include G_BEGIN_DECLS #define GST_TYPE_VIDEO_CODEC_STATE \ (gst_video_codec_state_get_type()) #define GST_TYPE_VIDEO_CODEC_FRAME \ (gst_video_codec_frame_get_type()) typedef struct _GstVideoCodecState GstVideoCodecState; typedef struct _GstVideoCodecFrame GstVideoCodecFrame; /** * GstVideoCodecState: * @info: The #GstVideoInfo describing the stream * @caps: The #GstCaps used in the caps negotiation of the pad. * @codec_data: a #GstBuffer corresponding to the * 'codec_data' field of a stream, or NULL. * @allocation_caps: The #GstCaps for allocation query and pool * negotiation. Since: 1.10 * * Structure representing the state of an incoming or outgoing video * stream for encoders and decoders. * * Decoders and encoders will receive such a state through their * respective @set_format vmethods. * * Decoders and encoders can set the downstream state, by using the * @gst_video_decoder_set_output_state() or * @gst_video_encoder_set_output_state() methods. */ struct _GstVideoCodecState { /*< private >*/ gint ref_count; /*< public >*/ GstVideoInfo info; GstCaps *caps; GstBuffer *codec_data; GstCaps *allocation_caps; /*< private >*/ gpointer padding[GST_PADDING_LARGE - 1]; }; /** * GstVideoCodecFrameFlags: * @GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY: is the frame only meant to be decoded * @GST_VIDEO_CODEC_FRAME_FLAG_SYNC_POINT: is the frame a synchronization point (keyframe) * @GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME: should the output frame be made a keyframe * @GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME_HEADERS: should the encoder output stream headers * * Flags for #GstVideoCodecFrame */ typedef enum { GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY = (1<<0), GST_VIDEO_CODEC_FRAME_FLAG_SYNC_POINT = (1<<1), GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME = (1<<2), GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME_HEADERS = (1<<3) } GstVideoCodecFrameFlags; /** * GST_VIDEO_CODEC_FRAME_FLAGS: * @frame: a #GstVideoCodecFrame * * The entire set of flags for the @frame */ #define GST_VIDEO_CODEC_FRAME_FLAGS(frame) ((frame)->flags) /** * GST_VIDEO_CODEC_FRAME_FLAG_IS_SET: * @frame: a #GstVideoCodecFrame * @flag: a flag to check for * * Checks whether the given @flag is set */ #define GST_VIDEO_CODEC_FRAME_FLAG_IS_SET(frame,flag) !!(GST_VIDEO_CODEC_FRAME_FLAGS(frame) & (flag)) /** * GST_VIDEO_CODEC_FRAME_FLAG_SET: * @frame: a #GstVideoCodecFrame * @flag: Flag to set, can be any number of bits in guint32. * * This macro sets the given bits */ #define GST_VIDEO_CODEC_FRAME_FLAG_SET(frame,flag) (GST_VIDEO_CODEC_FRAME_FLAGS(frame) |= (flag)) /** * GST_VIDEO_CODEC_FRAME_FLAG_UNSET: * @frame: a #GstVideoCodecFrame * @flag: Flag to unset * * This macro usets the given bits. */ #define GST_VIDEO_CODEC_FRAME_FLAG_UNSET(frame,flag) (GST_VIDEO_CODEC_FRAME_FLAGS(frame) &= ~(flag)) /** * GST_VIDEO_CODEC_FRAME_IS_DECODE_ONLY: * @frame: a #GstVideoCodecFrame * * Tests if the buffer should only be decoded but not sent downstream. */ #define GST_VIDEO_CODEC_FRAME_IS_DECODE_ONLY(frame) (GST_VIDEO_CODEC_FRAME_FLAG_IS_SET(frame, GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY)) /** * GST_VIDEO_CODEC_FRAME_SET_DECODE_ONLY: * @frame: a #GstVideoCodecFrame * * Sets the buffer to not be sent downstream. * * Decoder implementation can use this if they have frames that * are not meant to be displayed. * * Encoder implementation can safely ignore this field. */ #define GST_VIDEO_CODEC_FRAME_SET_DECODE_ONLY(frame) (GST_VIDEO_CODEC_FRAME_FLAG_SET(frame, GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY)) /** * GST_VIDEO_CODEC_FRAME_IS_SYNC_POINT: * @frame: a #GstVideoCodecFrame * * Tests if the frame is a synchronization point (like a keyframe). * * Decoder implementations can use this to detect keyframes. */ #define GST_VIDEO_CODEC_FRAME_IS_SYNC_POINT(frame) (GST_VIDEO_CODEC_FRAME_FLAG_IS_SET(frame, GST_VIDEO_CODEC_FRAME_FLAG_SYNC_POINT)) /** * GST_VIDEO_CODEC_FRAME_SET_SYNC_POINT: * @frame: a #GstVideoCodecFrame * * Sets the frame to be a synchronization point (like a keyframe). * * Encoder implementations should set this accordingly. * * Decoder implementing parsing features should set this when they * detect such a synchronization point. */ #define GST_VIDEO_CODEC_FRAME_SET_SYNC_POINT(frame) (GST_VIDEO_CODEC_FRAME_FLAG_SET(frame, GST_VIDEO_CODEC_FRAME_FLAG_SYNC_POINT)) #define GST_VIDEO_CODEC_FRAME_UNSET_SYNC_POINT(frame) (GST_VIDEO_CODEC_FRAME_FLAG_UNSET(frame, GST_VIDEO_CODEC_FRAME_FLAG_SYNC_POINT)) /** * GST_VIDEO_CODEC_FRAME_IS_FORCE_KEYFRAME: * @frame: a #GstVideoCodecFrame * * Tests if the frame must be encoded as a keyframe. Applies only to * frames provided to encoders. Decoders can safely ignore this field. */ #define GST_VIDEO_CODEC_FRAME_IS_FORCE_KEYFRAME(frame) (GST_VIDEO_CODEC_FRAME_FLAG_IS_SET(frame, GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME)) #define GST_VIDEO_CODEC_FRAME_SET_FORCE_KEYFRAME(frame) (GST_VIDEO_CODEC_FRAME_FLAG_SET(frame, GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME)) #define GST_VIDEO_CODEC_FRAME_UNSET_FORCE_KEYFRAME(frame) (GST_VIDEO_CODEC_FRAME_FLAG_UNSET(frame, GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME)) /** * GST_VIDEO_CODEC_FRAME_IS_FORCE_KEYFRAME_HEADERS: * @frame: a #GstVideoCodecFrame * * Tests if encoder should output stream headers before outputting the * resulting encoded buffer for the given frame. * * Applies only to frames provided to encoders. Decoders can safely * ignore this field. */ #define GST_VIDEO_CODEC_FRAME_IS_FORCE_KEYFRAME_HEADERS(frame) (GST_VIDEO_CODEC_FRAME_FLAG_IS_SET(frame, GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME_HEADERS)) #define GST_VIDEO_CODEC_FRAME_SET_FORCE_KEYFRAME_HEADERS(frame) (GST_VIDEO_CODEC_FRAME_FLAG_SET(frame, GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME_HEADERS)) #define GST_VIDEO_CODEC_FRAME_UNSET_FORCE_KEYFRAME_HEADERS(frame) (GST_VIDEO_CODEC_FRAME_FLAG_UNSET(frame, GST_VIDEO_CODEC_FRAME_FLAG_FORCE_KEYFRAME_HEADERS)) /** * GstVideoCodecFrame: * @pts: Presentation timestamp * @dts: Decoding timestamp * @duration: Duration of the frame * @system_frame_number: Unique identifier for the frame. Use this if you need * to get hold of the frame later (like when data is being decoded). * Typical usage in decoders is to set this on the opaque value provided * to the library and get back the frame using gst_video_decoder_get_frame() * @distance_from_sync: Distance in frames from the last synchronization point. * @input_buffer: the input #GstBuffer that created this frame. The buffer is owned * by the frame and references to the frame instead of the buffer should * be kept. * @output_buffer: the output #GstBuffer. Implementations should set this either * directly, or by using the * @gst_video_decoder_allocate_output_frame() or * @gst_video_decoder_allocate_output_buffer() methods. The buffer is * owned by the frame and references to the frame instead of the * buffer should be kept. * @deadline: Running time when the frame will be used. * * A #GstVideoCodecFrame represents a video frame both in raw and * encoded form. */ struct _GstVideoCodecFrame { /*< private >*/ gint ref_count; guint32 flags; /*< public >*/ guint32 system_frame_number; /* ED */ /*< private >*/ guint32 decode_frame_number; /* ED */ guint32 presentation_frame_number; /* ED */ /*< public >*/ GstClockTime dts; /* ED */ GstClockTime pts; /* ED */ GstClockTime duration; /* ED */ int distance_from_sync; /* ED */ GstBuffer *input_buffer; /* ED */ GstBuffer *output_buffer; /* ED */ GstClockTime deadline; /* D */ /*< private >*/ /* Events that should be pushed downstream *before* * the next output_buffer */ /* FIXME 2.0: Use a GQueue or similar */ GList *events; /* ED */ gpointer user_data; GDestroyNotify user_data_destroy_notify; union { struct { GstClockTime ts; GstClockTime ts2; guint num_subframes; } ABI; gpointer padding[GST_PADDING_LARGE]; } abidata; }; /* GstVideoCodecState */ GST_VIDEO_API GType gst_video_codec_state_get_type (void); GST_VIDEO_API GstVideoCodecState *gst_video_codec_state_ref (GstVideoCodecState * state); GST_VIDEO_API void gst_video_codec_state_unref (GstVideoCodecState * state); /* GstVideoCodecFrame */ GST_VIDEO_API GType gst_video_codec_frame_get_type (void); GST_VIDEO_API GstVideoCodecFrame *gst_video_codec_frame_ref (GstVideoCodecFrame * frame); GST_VIDEO_API void gst_video_codec_frame_unref (GstVideoCodecFrame * frame); GST_VIDEO_API void gst_video_codec_frame_set_user_data (GstVideoCodecFrame *frame, gpointer user_data, GDestroyNotify notify); GST_VIDEO_API gpointer gst_video_codec_frame_get_user_data (GstVideoCodecFrame *frame); G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstVideoCodecFrame, gst_video_codec_frame_unref) G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstVideoCodecState, gst_video_codec_state_unref) G_END_DECLS #endif