org.jitsi.impl.neomedia.codec.video.VPX Maven / Gradle / Ivy
/*
* Copyright @ 2015 Atlassian Pty Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jitsi.impl.neomedia.codec.video;
import org.jitsi.util.*;
/**
* A wrapper for the libvpx native library.
* See WebM Project Docs
*
* @author Boris Grozev
*/
public class VPX {
/**
* Operation completed without error.
* Corresponds to VPX_CODEC_OK from vpx/vpx_codec.h
*/
public static final int CODEC_OK = 0;
/**
* An iterator reached the end of list.
* Corresponds to VPX_CODEC_LIST_END from vpx/vpx_codec.h
*/
public static final int CODEC_LIST_END = 9;
/**
* Use eXternal Memory Allocation mode flag
* Corresponds to VPX_CODEC_USE_XMA from vpx/vpx_codec.h
*/
public static final int CODEC_USE_XMA = 0x00000001;
/**
* Output one partition at a time. Each partition is returned in its own
* VPX_CODEC_CX_FRAME_PKT.
*/
public static final int CODEC_USE_OUTPUT_PARTITION = 0x20000;
/**
* Improve resiliency against losses of whole frames.
*
* To set this option for an encoder, enable this bit in the value passed
* to vpx_enc_cft_set_error_resilient for the encoder's
* configuration.
*
* Corresponds to VPX_ERROR_RESILIENT_DEFAULT from
* vpx/vpx_encoder.h
*/
public static final int ERROR_RESILIENT_DEFAULT = 0x1;
/**
* The frame partitions are independently decodable by the bool decoder,
* meaning that partitions can be decoded even though earlier partitions
* have been lost. Note that intra predicition is still done over the
* partition boundary.
*
* To set this option for Coan encoder, enable this bit in the value passed
* to vpx_enc_cft_set_error_resilient for the encoder's
* configuration.
*
* Corresponds to VPX_ERROR_RESILIENT_PARTITIONS from
* vpx/vpx_encoder.h
*/
public static final int ERROR_RESILIENT_PARTITIONS = 0x2;
/**
* I420 format constant
* Corresponds to VPX_IMG_FMT_I420 from vpx/vpx_image.h
*/
public static final int IMG_FMT_I420 = 258;
/**
* Variable Bitrate mode.
* Corresponds to VPX_VBR from vpx/vpx_encoder.h
*/
public static final int RC_MODE_VBR = 0;
/**
* Constant Bitrate mode.
* Corresponds to VPX_CBR from vpx/vpx_encoder.h
*/
public static final int RC_MODE_CBR = 1;
/**
* Constant Quality mode.
* Corresponds to VPX_CQ from vpx/vpx_encoder.h
*/
public static final int RC_MODE_CQ = 2;
/**
* Encoder determines optimal placement automatically.
* Corresponds to VPX_KF_AUTO from in vpx/vpx_encoder.h
*/
public static final int KF_MODE_AUTO = 1;
/**
* Encoder does not place keyframes.
* Corresponds to VPX_KF_DISABLED from vpx/vpx_encoder.h
*/
public static final int KF_MODE_DISABLED = 1;
/**
* Process and return as soon as possible ('realtime' deadline)
* Corresponds to VPX_DL_REALTIME from vpx/vpx_encoder.h
*/
public static final int DL_REALTIME = 1;
/**
* Compressed video frame packet type.
* Corresponds to VPX_CODEC_CX_FRAME_PKT from
* vpx/vpx_encoder.h
*/
public static final int CODEC_CX_FRAME_PKT = 0;
/**
* Constant for VP8 decoder interface
*/
public static final int INTEFACE_VP8_DEC = 0;
/**
* Constant for VP8 encoder interface
*/
public static final int INTERFACE_VP8_ENC = 1;
/**
* Allocates memory for a vpx_codec_ctx_t on the heap.
*
* @return A pointer to the allocated memory.
*/
public static native long codec_ctx_malloc();
/**
* Initializes a vpx decoder context.
* @param context Pointer to a pre-allocated vpx_codec_ctx_t.
* @param iface Interface to be used. Has to be one of the
* VPX.INTERFACE_* constants.
* @param cfg Pointer to a pre-allocated vpx_codec_dec_cfg_t, may
* be 0.
* @param flags Flags.
*
* @return CODEC_OK on success, or an error code otherwise. The
* error code can be converted to a String with
* {@link VPX#codec_err_to_string(int)}
*/
public static native int codec_dec_init(long context,
int iface,
long cfg,
long flags);
/**
* Decodes the frame in buf, at offset buf_offset.
*
* @param context The context to use.
* @param buf Encoded frame buffer.
* @param buf_offset Offset into buf where the encoded frame begins.
* @param buf_size Size of the encoded frame.
* @param user_priv Application specific data to associate with this frame.
* @param deadline Soft deadline the decoder should attempt to meet,
* in microseconds. Set to zero for unlimited.
*
* @return CODEC_OK on success, or an error code otherwise. The
* error code can be converted to a String with
* {@link VPX#codec_err_to_string(int)}
*/
public static native int codec_decode(long context,
byte[] buf,
int buf_offset,
int buf_size,
long user_priv,
long deadline);
/**
* Gets the next frame available to display from the decoder context
* context.
* The list of available frames becomes valid upon completion of the
* codec_decode call, and remains valid until the next call to
* codec_decode.
*
* @param context The decoder context to use.
* @param iter Iterator storage, initialized by setting its first element
* to 0.
*
* @return Pointer to a vpx_image_t describing the decoded frame,
* or 0 if no more frames are available
*/
public static native long codec_get_frame(long context,
long[] iter);
/**
* Destroys a codec context, freeing any associated memory buffers.
*
* @param context Pointer to the vpx_codec_ctx_t context to destroy.
*
* @return CODEC_OK on success, or an error code otherwise. The
* error code can be converted to a String with
* {@link VPX#codec_err_to_string(int)}
*/
public static native int codec_destroy(long context);
/**
* Initializes a vpx encoder context.
*
* @param context Pointer to a pre-allocated vpx_codec_ctx_t.
* @param iface Interface to be used. Has to be one of the
* VPX.INTERFACE_* constants.
* @param cfg Pointer to a pre-allocated vpx_codec_enc_cfg_t,
* may be 0.
* @param flags Flags.
*
* @return CODEC_OK on success, or an error code otherwise. The
* error code can be converted to a String with
* {@link VPX#codec_err_to_string(int)}
*/
public static native int codec_enc_init(long context,
int iface,
long cfg,
long flags);
/**
*
* @param context Pointer to the codec context on which to set the
* confirutation
* @param cfg Pointer to a vpx_codec_enc_cfg_t to set.
*
* @return CODEC_OK on success, or an error code otherwise. The
* error code can be converted to a String with
* {@link VPX#codec_err_to_string(int)}
*/
public static native int codec_enc_config_set(long context,
long cfg);
/**
* Encodes the frame described by img, buf,
* offset0, offset1 and offset2.
*
* Note that buf and the offsets describe where the frames is
* stored, but img has to have all of its other parameters (format,
* dimensions, strides) already set.
*
* The reason buf and the offsets are treated differently is to
* allow for the encoder to operate on java memory and avoid copying the raw
* frame to native memory.
*
* @param context Pointer to the codec context to use.
* @param img Pointer to a vpx_image_t describing the raw frame
* @param buf Contains the raw frame
* @param offset0 Offset of the first plane
* @param offset1 Offset of the second plane
* @param offset2 Offset of the third plane
* @param pts Presentation time stamp, in timebase units.
* @param duration Duration to show frame, in timebase units.
* @param flags Flags to use for encoding this frame.
* @param deadline Time to spend encoding, in microseconds. (0=infinite)
*
* @return CODEC_OK on success, or an error code otherwise. The
* error code can be converted to a String with
* {@link VPX#codec_err_to_string(int)}
*/
public static native int codec_encode(long context,
long img,
byte[] buf,
int offset0,
int offset1,
int offset2,
long pts,
long duration,
long flags,
long deadline);
/**
* Encoded data iterator.
* Iterates over a list of data packets to be passed from the encoder to
* the application. The kind of a packet can be determined using
* {@link VPX#codec_cx_pkt_get_kind}
* Packets of kind CODEC_CX_FRAME_PKT should be passed to the
* application's muxer.
*
* @param context The codec context to use.
* @param iter Iterator storage, initialized by setting its first element
* to 0.
*
* @return Pointer to a vpx_codec_cx_pkt_t containing the output data
* packet, or 0 to indicate the end of available packets
*/
public static native long codec_get_cx_data(long context,
long[] iter);
/**
* Returns the kind of the vpx_codec_cx_pkt_t pointed to
* by pkt.
*
* @param pkt Pointer to the vpx_codec_cx_pkt_t to return the
* kind of.
* @return The kind of pkt.
*/
public static native int codec_cx_pkt_get_kind(long pkt);
/**
* Returns the size of the data in the vpx_codec_cx_pkt_t pointed
* to by pkt. Can only be used for packets of kind
* CODEC_CX_FRAME_PKT.
*
* @param pkt Pointer to a vpx_codec_cx_pkt_t.
*
* @return The size of the data of pkt.
*/
public static native int codec_cx_pkt_get_size(long pkt);
/**
* Returns a pointer to the data in the vpx_codec_cx_pkt_t pointed
* to bypkt. Can only be used for packets of kind
* CODEC_CX_FRAME_PKT.
*
* @param pkt Pointer to the vpx_codec_cx_pkt_t.
* @return Pointer to the data of pkt.
*/
public static native long codec_cx_pkt_get_data(long pkt);
//img
/**
* Allocates memory for a vpx_image_t on the heap.
*
* @return A pointer to the allocated memory.
*/
public static native long img_malloc();
/**
* Returns the value of the w (width) field of a
* vpx_image_t.
*
* @param img Pointer to a vpx_image_t.
*
* @return The w (width) field of img.
*/
public static native int img_get_w(long img);
/**
* Returns the value of the h (height) field of a
* vpx_image_t.
*
* @param img Pointer to a vpx_image_t.
*
* @return The h (height) field of img.
*/
public static native int img_get_h(long img);
/**
* Returns the value of the d_w (displayed width) field of a
* vpx_image_t.
*
* @param img Pointer to a vpx_image_t.
*
* @return The d_w (displayed width) field of img.
*/
public static native int img_get_d_w(long img);
/**
* Returns the value of the d_h (displayed height) field of a
* vpx_image_t.
*
* @param img Pointer to a vpx_image_t.
*
* @return The d_h (displayed height) field of img.
*/
public static native int img_get_d_h(long img);
/**
* Returns the value of the planes[0] field of a
* vpx_image_t.
*
* @param img Pointer to a vpx_image_t.
*
* @return The planes[0] field of img.
*/
public static native long img_get_plane0(long img);
/**
* Returns the value of the planes[1] field of a
* vpx_image_t.
*
* @param img Pointer to a vpx_image_t.
*
* @return The planes[1] field of img.
*/
public static native long img_get_plane1(long img);
/**
* Returns the value of the planes[2] field of a
* vpx_image_t.
*
* @param img Pointer to a vpx_image_t.
*
* @return The planes[2] field of img.
*/
public static native long img_get_plane2(long img);
/**
* Returns the value of the stride[0] field of a
* vpx_image_t.
*
* @param img Pointer to a vpx_image_t.
*
* @return The stride[0] field of img.
*/
public static native int img_get_stride0(long img);
/**
* Returns the value of the stride[1] field of a
* vpx_image_t.
*
* @param img Pointer to a vpx_image_t.
*
* @return The stride[1] field of img.
*/
public static native int img_get_stride1(long img);
/**
* Returns the value of the stride[2] field of a
* vpx_image_t.
*
* @param img Pointer to a vpx_image_t.
*
* @return The stride[2] field of img.
*/
public static native int img_get_stride2(long img);
/**
* Returns the value of the fmt field of a
* vpx_image_t.
*
* @param img Pointer to a vpx_image_t.
*
* @return The fmt field of img.
*/
public static native int img_get_fmt(long img);
/**
* Sets the w (width) field of a vpx_image_t.
* @param img Pointer to a vpx_image_t.
* @param value The value to set.
*/
public static native void img_set_w(long img, int value);
/**
* Sets the h (height) field of a vpx_image_t.
* @param img Pointer to a vpx_image_t.
* @param value The value to set.
*/
public static native void img_set_h(long img, int value);
/**
* Sets the d_w (displayed width) field of a vpx_image_t.
* @param img Pointer to a vpx_image_t.
* @param value The value to set.
*/
public static native void img_set_d_w(long img, int value);
/**
* Sets the d_h (displayed height) field of a vpx_image_t.
* @param img Pointer to a vpx_image_t.
* @param value The value to set.
*/
public static native void img_set_d_h(long img, int value);
/**
* Sets the stride[0] field of a vpx_image_t.
* @param img Pointer to a vpx_image_t.
* @param value The value to set.
*/
public static native void img_set_stride0(long img, int value);
/**
* Sets the stride[1] field of a vpx_image_t.
* @param img Pointer to a vpx_image_t.
* @param value The value to set.
*/
public static native void img_set_stride1(long img, int value);
/**
* Sets the stride[2] field of a vpx_image_t.
* @param img Pointer to a vpx_image_t.
* @param value The value to set.
*/
public static native void img_set_stride2(long img, int value);
/**
* Sets the stride[3] field of a vpx_image_t.
* @param img Pointer to a vpx_image_t.
* @param value The value to set.
*/
public static native void img_set_stride3(long img, int value);
/**
* Sets the fmt (format) field of a vpx_image_t.
* @param img Pointer to a vpx_image_t.
* @param value The value to set.
*/
public static native void img_set_fmt(long img, int value);
/**
* Sets the bps (bits per sample) field of a vpx_image_t.
* @param img Pointer to a vpx_image_t.
* @param value The value to set.
*/
public static native void img_set_bps(long img, int value);
/**
* Open a descriptor, using existing storage for the underlying image.
*
* Returns a descriptor for storing an image of the given format. The
* storage for descriptor has been allocated elsewhere, and a descriptor is
* desired to "wrap" that storage.
*
* @param img Pointer to a vpx_image_t.
* @param fmt Format of the image.
* @param d_w Width of the image.
* @param d_h Height of the image.
* @param align Alignment, in bytes, of each row in the image.
* @param data Storage to use for the image
*/
public static native void img_wrap(long img,
int fmt,
int d_w,
int d_h,
int align,
long data);
/**
* Allocates memory for a vpx_codec_dec_cfg_t on the heap.
*
* @return A pointer to the allocated memory.
*/
public static native long codec_dec_cfg_malloc();
/**
* Sets the w field of a vpx_codec_dec_cfg_t.
*
* @param cfg Pointer to a vpx_codec_dec_cfg_t.
* @param value The value to set.
*/
public static native void codec_dec_cfg_set_w(long cfg, int value);
/**
* Sets the h field of a vpx_codec_dec_cfg_t.
*
* @param cfg Pointer to a vpx_codec_dec_cfg_t.
* @param value The value to set.
*/
public static native void codec_dec_cfg_set_h(long cfg, int value);
/**
* Allocates memory for a vpx_codec_enc_cfg_t on the heap.
*
* @return A pointer to the allocated memory.
*/
public static native long codec_enc_cfg_malloc();
/**
* Initializes a encoder configuration structure with default values.
*
* @param iface Interface. Should be one of the INTERFACE_*
* constants
* @param cfg Pointer to the vpx_codec_enc_cfg_t to initialize
* @param usage End usage. Set to 0 or use codec specific values.
*
* @return CODEC_OK on success, or an error code otherwise. The
* error code can be converted to a String with
* {@link VPX#codec_err_to_string(int)}
*/
public static native int codec_enc_config_default(int iface,
long cfg,
int usage);
/**
* Sets the g_profile field of a vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_profile(long cfg,
int value);
/**
* Sets the g_threads field of a vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_threads(long cfg,
int value);
/**
* Sets the g_w field of a vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_w(long cfg,
int value);
/**
* Sets the g_h field of a vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_h(long cfg,
int value);
/**
* Sets the g_error_resilient field of a
* vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_error_resilient(long cfg,
int value);
/**
* Sets the rc_target_bitrate field of a
* vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_target_bitrate(long cfg,
int value);
/**
* Sets the rc_dropframe_thresh field of a
* vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_dropframe_thresh(long cfg,
int value);
/**
* Sets the rc_resize_allowed field of a
* vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_resize_allowed(long cfg,
int value);
/**
* Sets the rc_resize_up_thresh field of a
* vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_resize_up_thresh(long cfg,
int value);
/**
* Sets the rc_resize_down_thresh field of a
* vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_resize_down_thresh(long cfg,
int value);
/**
* Sets the rc_end_usage field of a vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_end_usage(long cfg,
int value);
/**
* Sets the rc_min_quantizer field of a vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_min_quantizer(long cfg,
int value);
/**
* Sets the rc_max_quantizer field of a vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_max_quantizer(long cfg,
int value);
/**
* Sets the rc_undershoot_pct field of a vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_undershoot_pct(long cfg,
int value);
/**
* Sets the rc_overshoot_pct field of a
* vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_overshoot_pct(long cfg,
int value);
/**
* Sets the rc_buf_sz field of a vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_buf_sz(long cfg,
int value);
/**
* Sets the rc_buf_initial_sz field of a
* vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_buf_initial_sz(long cfg,
int value);
/**
* Sets the rc_buf_optimal_sz field of a
* vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_rc_buf_optimal_sz(long cfg,
int value);
/**
* Sets the kf_mode field of a vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_kf_mode(long cfg,
int value);
/**
* Sets the kf_min_dist field of a vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_kf_min_dist(long cfg,
int value);
/**
* Sets the kf_max_dist field of a vpx_codec_enc_cfg_t.
*
* @param cfg Pointer to a vpx_codec_enc_cfg_t.
* @param value The value to set.
*/
public static native void codec_enc_cfg_set_kf_max_dist(long cfg,
int value);
/**
* Allocates memory for a vpx_codec_stream_info_t on the heap.
*
* @return A pointer to the allocated memory.
*/
public static native long stream_info_malloc();
/**
* Returns the w field of a vpx_codec_stream_info_t.
*
* @param stream_info Pointer to a vpx_codec_stream_info_t.
*
* @return The w field of a stream_info.
*/
public static native int stream_info_get_w(long stream_info);
/**
* Returns the h field of a vpx_codec_stream_info_t.
*
* @param stream_info Pointer to a vpx_codec_stream_info_t.
*
* @return The h field of a stream_info.
*/
public static native int stream_info_get_h(long stream_info);
/**
* Returns the is_kf field of a vpx_codec_stream_info_t.
*
* @param stream_info Pointer to a vpx_codec_stream_info_t.
*
* @return The w field of a stream_info.
*/
public static native int stream_info_get_is_kf(long stream_info);
/**
* Performs high level parsing of the bitstream. Construction of a decoder
* context is not necessary. Can be used to determine if the bitstream is
* of the proper format, and to extract information from the stream.
*
* @param iface Interface, should be one of the INTERFACE_*
* constants.
* @param buf Buffer containing a compressed frame.
* @param buf_offset Offset into buf where the compressed frame
* begins.
* @param buf_size Size of the compressed frame.
* @param si_ptr Pointer to a vpx_codec_stream_info_t which will
* be filled with information about the compressed frame.
*
* @return CODEC_OK on success, or an error code otherwise. The
* error code can be converted to a String with
* {@link VPX#codec_err_to_string(int)}
*/
public static native int codec_peek_stream_info(int iface,
byte[] buf,
int buf_offset,
int buf_size,
long si_ptr);
/**
* Allocates memorry on the heap (a simple wrapped around the native
* malloc())
* @param s Number of bytes to allocate
*
* @return Pointer to the memory allocated.
*/
public static native long malloc(long s);
/**
* Frees memory, which has been allocated with {@link VPX#malloc(long)} or
* one of the *_malloc() functions.
*
* @param ptr Pointer to the memory to free.
*/
public static native void free(long ptr);
/**
* Copies n bytes from src to dst. Simple wrapper
* around the native memcpy() funciton.
*
* @param dst Destination.
* @param src Source.
* @param n Number of bytes to copy.
*/
public static native void memcpy(byte[] dst, long src, int n);
/**
* Fills in buf with a string description of the error code
* err. Fills at most buf_size bytes of buf
*
* @param err Error code
* @param buf Buffer to copy the string into
* @param buf_size Buffer size
*
* @return The number of bytes written to buf
*/
public static native int codec_err_to_string(int err,
byte[] buf,
int buf_size);
/**
* Returns a String describing the error code err.
* @param err Error code
*
* @return A String describing the error code err.
*/
public static String codec_err_to_string(int err)
{
byte[] buf = new byte[100];
codec_err_to_string(err, buf, buf.length);
return new String(buf);
}
static
{
OSUtils.loadLibrary("jnvpx", VPX.class);
}
/**
* Java wrapper around vpx_codec_stream_info_t. Contains basic information,
* obtainable from an encoded frame without a decoder context.
*/
static class StreamInfo
{
/**
* Width
*/
int w;
/**
* Height
*/
int h;
/**
* Is keyframe
*/
boolean is_kf;
/**
* Initializes this instance by parsing buf
*
* @param iface Interface, should be one of the INTERFACE_*
* constants.
* @param buf Buffer containing a compressed frame to parse.
* @param buf_offset Offset into buffer where the compressed frame
* begins.
* @param buf_size Size of the compressed frame.
*/
StreamInfo(int iface, byte[] buf, int buf_offset, int buf_size)
{
long si = stream_info_malloc();
if(codec_peek_stream_info(iface, buf, buf_offset, buf_size, si)
!= CODEC_OK)
return;
w = stream_info_get_w(si);
h = stream_info_get_h(si);
is_kf = stream_info_get_is_kf(si) != 0;
if(si != 0)
free(si);
}
/**
* Gets the w (width) field of this instance.
*
* @return the w (width) field of this instance.
*/
public int getW()
{
return w;
}
/**
* Gets the h (height) field of this instance.
*
* @return the h (height) field of this instance.
*/
public int getH()
{
return h;
}
/**
* Gets the is_kf (is keyframe) field of this instance.
*
* @return the is_kf (is keyframe) field of this instance.
*/
public boolean isKf()
{
return is_kf;
}
}
}
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