/*****************************************************************************
- * x264.h: h264 encoder library
+ * x264.h: x264 public header
*****************************************************************************
- * Copyright (C) 2003-2008 x264 Project
+ * Copyright (C) 2003-2015 x264 project
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Loren Merritt <lorenm@u.washington.edu>
+ * Fiona Glaser <fiona@x264.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
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
+ *
+ * This program is also available under a commercial proprietary license.
+ * For more information, contact us at licensing@x264.com.
*****************************************************************************/
#ifndef X264_X264_H
#define X264_X264_H
-#if !defined(_STDINT_H) && !defined(_STDINT_H_) && \
- !defined(_INTTYPES_H) && !defined(_INTTYPES_H_)
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(_STDINT_H) && !defined(_STDINT_H_) && !defined(_STDINT_H_INCLUDED) && !defined(_STDINT) &&\
+ !defined(_SYS_STDINT_H_) && !defined(_INTTYPES_H) && !defined(_INTTYPES_H_) && !defined(_INTTYPES)
# ifdef _MSC_VER
# pragma message("You must include stdint.h or inttypes.h before x264.h")
# else
#include <stdarg.h>
-#define X264_BUILD 96
+#include "x264_config.h"
+
+#define X264_BUILD 148
+
+/* Application developers planning to link against a shared library version of
+ * libx264 from a Microsoft Visual Studio or similar development environment
+ * will need to define X264_API_IMPORTS before including this header.
+ * This clause does not apply to MinGW, similar development environments, or non
+ * Windows platforms. */
+#ifdef X264_API_IMPORTS
+#define X264_API __declspec(dllimport)
+#else
+#define X264_API
+#endif
/* x264_t:
* opaque handler for encoder */
typedef struct x264_t x264_t;
+/****************************************************************************
+ * NAL structure and functions
+ ****************************************************************************/
+
+enum nal_unit_type_e
+{
+ NAL_UNKNOWN = 0,
+ NAL_SLICE = 1,
+ NAL_SLICE_DPA = 2,
+ NAL_SLICE_DPB = 3,
+ NAL_SLICE_DPC = 4,
+ NAL_SLICE_IDR = 5, /* ref_idc != 0 */
+ NAL_SEI = 6, /* ref_idc == 0 */
+ NAL_SPS = 7,
+ NAL_PPS = 8,
+ NAL_AUD = 9,
+ NAL_FILLER = 12,
+ /* ref_idc == 0 for 6,9,10,11,12 */
+};
+enum nal_priority_e
+{
+ NAL_PRIORITY_DISPOSABLE = 0,
+ NAL_PRIORITY_LOW = 1,
+ NAL_PRIORITY_HIGH = 2,
+ NAL_PRIORITY_HIGHEST = 3,
+};
+
+/* The data within the payload is already NAL-encapsulated; the ref_idc and type
+ * are merely in the struct for easy access by the calling application.
+ * All data returned in an x264_nal_t, including the data in p_payload, is no longer
+ * valid after the next call to x264_encoder_encode. Thus it must be used or copied
+ * before calling x264_encoder_encode or x264_encoder_headers again. */
+typedef struct x264_nal_t
+{
+ int i_ref_idc; /* nal_priority_e */
+ int i_type; /* nal_unit_type_e */
+ int b_long_startcode;
+ int i_first_mb; /* If this NAL is a slice, the index of the first MB in the slice. */
+ int i_last_mb; /* If this NAL is a slice, the index of the last MB in the slice. */
+
+ /* Size of payload (including any padding) in bytes. */
+ int i_payload;
+ /* If param->b_annexb is set, Annex-B bytestream with startcode.
+ * Otherwise, startcode is replaced with a 4-byte size.
+ * This size is the size used in mp4/similar muxing; it is equal to i_payload-4 */
+ uint8_t *p_payload;
+
+ /* Size of padding in bytes. */
+ int i_padding;
+} x264_nal_t;
+
/****************************************************************************
* Encoder parameters
****************************************************************************/
-/* CPU flags
- */
-#define X264_CPU_CACHELINE_32 0x000001 /* avoid memory loads that span the border between two cachelines */
-#define X264_CPU_CACHELINE_64 0x000002 /* 32/64 is the size of a cacheline in bytes */
-#define X264_CPU_ALTIVEC 0x000004
-#define X264_CPU_MMX 0x000008
-#define X264_CPU_MMXEXT 0x000010 /* MMX2 aka MMXEXT aka ISSE */
-#define X264_CPU_SSE 0x000020
-#define X264_CPU_SSE2 0x000040
-#define X264_CPU_SSE2_IS_SLOW 0x000080 /* avoid most SSE2 functions on Athlon64 */
-#define X264_CPU_SSE2_IS_FAST 0x000100 /* a few functions are only faster on Core2 and Phenom */
-#define X264_CPU_SSE3 0x000200
-#define X264_CPU_SSSE3 0x000400
-#define X264_CPU_SHUFFLE_IS_FAST 0x000800 /* Penryn, Nehalem, and Phenom have fast shuffle units */
-#define X264_CPU_STACK_MOD4 0x001000 /* if stack is only mod4 and not mod16 */
-#define X264_CPU_SSE4 0x002000 /* SSE4.1 */
-#define X264_CPU_SSE42 0x004000 /* SSE4.2 */
-#define X264_CPU_SSE_MISALIGN 0x008000 /* Phenom support for misaligned SSE instruction arguments */
-#define X264_CPU_LZCNT 0x010000 /* Phenom support for "leading zero count" instruction. */
-#define X264_CPU_ARMV6 0x020000
-#define X264_CPU_NEON 0x040000 /* ARM NEON */
-#define X264_CPU_FAST_NEON_MRC 0x080000 /* Transfer from NEON to ARM register is fast (Cortex-A9) */
-
-/* Analyse flags
- */
+/* CPU flags */
+
+/* x86 */
+#define X264_CPU_CMOV 0x0000001
+#define X264_CPU_MMX 0x0000002
+#define X264_CPU_MMX2 0x0000004 /* MMX2 aka MMXEXT aka ISSE */
+#define X264_CPU_MMXEXT X264_CPU_MMX2
+#define X264_CPU_SSE 0x0000008
+#define X264_CPU_SSE2 0x0000010
+#define X264_CPU_SSE3 0x0000020
+#define X264_CPU_SSSE3 0x0000040
+#define X264_CPU_SSE4 0x0000080 /* SSE4.1 */
+#define X264_CPU_SSE42 0x0000100 /* SSE4.2 */
+#define X264_CPU_LZCNT 0x0000200 /* Phenom support for "leading zero count" instruction. */
+#define X264_CPU_AVX 0x0000400 /* AVX support: requires OS support even if YMM registers aren't used. */
+#define X264_CPU_XOP 0x0000800 /* AMD XOP */
+#define X264_CPU_FMA4 0x0001000 /* AMD FMA4 */
+#define X264_CPU_FMA3 0x0002000 /* FMA3 */
+#define X264_CPU_AVX2 0x0004000 /* AVX2 */
+#define X264_CPU_BMI1 0x0008000 /* BMI1 */
+#define X264_CPU_BMI2 0x0010000 /* BMI2 */
+/* x86 modifiers */
+#define X264_CPU_CACHELINE_32 0x0020000 /* avoid memory loads that span the border between two cachelines */
+#define X264_CPU_CACHELINE_64 0x0040000 /* 32/64 is the size of a cacheline in bytes */
+#define X264_CPU_SSE2_IS_SLOW 0x0080000 /* avoid most SSE2 functions on Athlon64 */
+#define X264_CPU_SSE2_IS_FAST 0x0100000 /* a few functions are only faster on Core2 and Phenom */
+#define X264_CPU_SLOW_SHUFFLE 0x0200000 /* The Conroe has a slow shuffle unit (relative to overall SSE performance) */
+#define X264_CPU_STACK_MOD4 0x0400000 /* if stack is only mod4 and not mod16 */
+#define X264_CPU_SLOW_CTZ 0x0800000 /* BSR/BSF x86 instructions are really slow on some CPUs */
+#define X264_CPU_SLOW_ATOM 0x1000000 /* The Atom is terrible: slow SSE unaligned loads, slow
+ * SIMD multiplies, slow SIMD variable shifts, slow pshufb,
+ * cacheline split penalties -- gather everything here that
+ * isn't shared by other CPUs to avoid making half a dozen
+ * new SLOW flags. */
+#define X264_CPU_SLOW_PSHUFB 0x2000000 /* such as on the Intel Atom */
+#define X264_CPU_SLOW_PALIGNR 0x4000000 /* such as on the AMD Bobcat */
+
+/* PowerPC */
+#define X264_CPU_ALTIVEC 0x0000001
+
+/* ARM and AArch64 */
+#define X264_CPU_ARMV6 0x0000001
+#define X264_CPU_NEON 0x0000002 /* ARM NEON */
+#define X264_CPU_FAST_NEON_MRC 0x0000004 /* Transfer from NEON to ARM register is fast (Cortex-A9) */
+#define X264_CPU_ARMV8 0x0000008
+
+/* MIPS */
+#define X264_CPU_MSA 0x0000001 /* MIPS MSA */
+
+/* Analyse flags */
#define X264_ANALYSE_I4x4 0x0001 /* Analyse i4x4 */
#define X264_ANALYSE_I8x8 0x0002 /* Analyse i8x8 (requires 8x8 transform) */
#define X264_ANALYSE_PSUB16x16 0x0010 /* Analyse p16x8, p8x16 and p8x8 */
#define X264_RC_CQP 0
#define X264_RC_CRF 1
#define X264_RC_ABR 2
+#define X264_QP_AUTO 0
#define X264_AQ_NONE 0
#define X264_AQ_VARIANCE 1
#define X264_AQ_AUTOVARIANCE 2
+#define X264_AQ_AUTOVARIANCE_BIASED 3
#define X264_B_ADAPT_NONE 0
#define X264_B_ADAPT_FAST 1
#define X264_B_ADAPT_TRELLIS 2
#define X264_WEIGHTP_NONE 0
-#define X264_WEIGHTP_BLIND 1
+#define X264_WEIGHTP_SIMPLE 1
#define X264_WEIGHTP_SMART 2
#define X264_B_PYRAMID_NONE 0
#define X264_B_PYRAMID_STRICT 1
#define X264_B_PYRAMID_NORMAL 2
#define X264_KEYINT_MIN_AUTO 0
+#define X264_KEYINT_MAX_INFINITE (1<<30)
static const char * const x264_direct_pred_names[] = { "none", "spatial", "temporal", "auto", 0 };
static const char * const x264_motion_est_names[] = { "dia", "hex", "umh", "esa", "tesa", 0 };
static const char * const x264_overscan_names[] = { "undef", "show", "crop", 0 };
static const char * const x264_vidformat_names[] = { "component", "pal", "ntsc", "secam", "mac", "undef", 0 };
static const char * const x264_fullrange_names[] = { "off", "on", 0 };
-static const char * const x264_colorprim_names[] = { "", "bt709", "undef", "", "bt470m", "bt470bg", "smpte170m", "smpte240m", "film", 0 };
-static const char * const x264_transfer_names[] = { "", "bt709", "undef", "", "bt470m", "bt470bg", "smpte170m", "smpte240m", "linear", "log100", "log316", 0 };
-static const char * const x264_colmatrix_names[] = { "GBR", "bt709", "undef", "", "fcc", "bt470bg", "smpte170m", "smpte240m", "YCgCo", 0 };
+static const char * const x264_colorprim_names[] = { "", "bt709", "undef", "", "bt470m", "bt470bg", "smpte170m", "smpte240m", "film", "bt2020", 0 };
+static const char * const x264_transfer_names[] = { "", "bt709", "undef", "", "bt470m", "bt470bg", "smpte170m", "smpte240m", "linear", "log100", "log316",
+ "iec61966-2-4", "bt1361e", "iec61966-2-1", "bt2020-10", "bt2020-12", 0 };
+static const char * const x264_colmatrix_names[] = { "GBR", "bt709", "undef", "", "fcc", "bt470bg", "smpte170m", "smpte240m", "YCgCo", "bt2020nc", "bt2020c", 0 };
static const char * const x264_nal_hrd_names[] = { "none", "vbr", "cbr", 0 };
-/* Colorspace type
- * legacy only; nothing other than I420 is really supported. */
+/* Colorspace type */
#define X264_CSP_MASK 0x00ff /* */
#define X264_CSP_NONE 0x0000 /* Invalid mode */
#define X264_CSP_I420 0x0001 /* yuv 4:2:0 planar */
-#define X264_CSP_I422 0x0002 /* yuv 4:2:2 planar */
-#define X264_CSP_I444 0x0003 /* yuv 4:4:4 planar */
-#define X264_CSP_YV12 0x0004 /* yuv 4:2:0 planar */
-#define X264_CSP_YUYV 0x0005 /* yuv 4:2:2 packed */
-#define X264_CSP_RGB 0x0006 /* rgb 24bits */
-#define X264_CSP_BGR 0x0007 /* bgr 24bits */
-#define X264_CSP_BGRA 0x0008 /* bgr 32bits */
-#define X264_CSP_MAX 0x0009 /* end of list */
-#define X264_CSP_VFLIP 0x1000 /* */
+#define X264_CSP_YV12 0x0002 /* yvu 4:2:0 planar */
+#define X264_CSP_NV12 0x0003 /* yuv 4:2:0, with one y plane and one packed u+v */
+#define X264_CSP_NV21 0x0004 /* yuv 4:2:0, with one y plane and one packed v+u */
+#define X264_CSP_I422 0x0005 /* yuv 4:2:2 planar */
+#define X264_CSP_YV16 0x0006 /* yvu 4:2:2 planar */
+#define X264_CSP_NV16 0x0007 /* yuv 4:2:2, with one y plane and one packed u+v */
+#define X264_CSP_V210 0x0008 /* 10-bit yuv 4:2:2 packed in 32 */
+#define X264_CSP_I444 0x0009 /* yuv 4:4:4 planar */
+#define X264_CSP_YV24 0x000a /* yvu 4:4:4 planar */
+#define X264_CSP_BGR 0x000b /* packed bgr 24bits */
+#define X264_CSP_BGRA 0x000c /* packed bgr 32bits */
+#define X264_CSP_RGB 0x000d /* packed rgb 24bits */
+#define X264_CSP_MAX 0x000e /* end of list */
+#define X264_CSP_VFLIP 0x1000 /* the csp is vertically flipped */
+#define X264_CSP_HIGH_DEPTH 0x2000 /* the csp has a depth of 16 bits per pixel component */
/* Slice type */
#define X264_TYPE_AUTO 0x0000 /* Let x264 choose the right type */
#define X264_TYPE_P 0x0003
#define X264_TYPE_BREF 0x0004 /* Non-disposable B-frame */
#define X264_TYPE_B 0x0005
-#define IS_X264_TYPE_I(x) ((x)==X264_TYPE_I || (x)==X264_TYPE_IDR)
+#define X264_TYPE_KEYFRAME 0x0006 /* IDR or I depending on b_open_gop option */
+#define IS_X264_TYPE_I(x) ((x)==X264_TYPE_I || (x)==X264_TYPE_IDR || (x)==X264_TYPE_KEYFRAME)
#define IS_X264_TYPE_B(x) ((x)==X264_TYPE_B || (x)==X264_TYPE_BREF)
/* Log level */
/* Zones: override ratecontrol or other options for specific sections of the video.
* See x264_encoder_reconfig() for which options can be changed.
* If zones overlap, whichever comes later in the list takes precedence. */
-typedef struct
+typedef struct x264_zone_t
{
int i_start, i_end; /* range of frame numbers */
int b_force_qp; /* whether to use qp vs bitrate factor */
{
/* CPU flags */
unsigned int cpu;
- int i_threads; /* encode multiple frames in parallel */
+ int i_threads; /* encode multiple frames in parallel */
+ int i_lookahead_threads; /* multiple threads for lookahead analysis */
int b_sliced_threads; /* Whether to use slice-based threading. */
int b_deterministic; /* whether to allow non-deterministic optimizations when threaded */
+ int b_cpu_independent; /* force canonical behavior rather than cpu-dependent optimal algorithms */
int i_sync_lookahead; /* threaded lookahead buffer */
/* Video Properties */
int i_width;
int i_height;
- int i_csp; /* CSP of encoded bitstream, only i420 supported */
+ int i_csp; /* CSP of encoded bitstream */
int i_level_idc;
int i_frame_total; /* number of frames to encode if known, else 0 */
/* Bitstream parameters */
int i_frame_reference; /* Maximum number of reference frames */
+ int i_dpb_size; /* Force a DPB size larger than that implied by B-frames and reference frames.
+ * Useful in combination with interactive error resilience. */
int i_keyint_max; /* Force an IDR keyframe at this interval */
int i_keyint_min; /* Scenecuts closer together than this are coded as I, not IDR. */
int i_scenecut_threshold; /* how aggressively to insert extra I frames */
int i_bframe_adaptive;
int i_bframe_bias;
int i_bframe_pyramid; /* Keep some B-frames as references: 0=off, 1=strict hierarchical, 2=normal */
+ int b_open_gop;
+ int b_bluray_compat;
+ int i_avcintra_class;
int b_deblocking_filter;
int i_deblocking_filter_alphac0; /* [-6, 6] -6 light filter, 6 strong */
int b_constrained_intra;
int i_cqm_preset;
- char *psz_cqm_file; /* JM format */
+ char *psz_cqm_file; /* filename (in UTF-8) of CQM file, JM format */
uint8_t cqm_4iy[16]; /* used only if i_cqm_preset == X264_CQM_CUSTOM */
- uint8_t cqm_4ic[16];
uint8_t cqm_4py[16];
+ uint8_t cqm_4ic[16];
uint8_t cqm_4pc[16];
uint8_t cqm_8iy[64];
uint8_t cqm_8py[64];
+ uint8_t cqm_8ic[64];
+ uint8_t cqm_8pc[64];
/* Log */
void (*pf_log)( void *, int i_level, const char *psz, va_list );
void *p_log_private;
int i_log_level;
- int b_visualize;
- char *psz_dump_yuv; /* filename for reconstructed frames */
+ int b_full_recon; /* fully reconstruct frames, even when not necessary for encoding. Implied by psz_dump_yuv */
+ char *psz_dump_yuv; /* filename (in UTF-8) for reconstructed frames */
/* Encoder analyser parameters */
struct
float f_psy_trellis; /* Psy trellis strength */
int b_psy; /* Toggle all psy optimizations */
+ int b_mb_info; /* Use input mb_info data in x264_picture_t */
+ int b_mb_info_update; /* Update the values in mb_info according to the results of encoding. */
+
/* the deadzone size that will be used in luma quantization */
int i_luma_deadzone[2]; /* {inter, intra} */
{
int i_rc_method; /* X264_RC_* */
- int i_qp_constant; /* 0-51 */
+ int i_qp_constant; /* 0 to (51 + 6*(x264_bit_depth-8)). 0=lossless */
int i_qp_min; /* min allowed QP value */
int i_qp_max; /* max allowed QP value */
int i_qp_step; /* max QP step between frames */
float f_ip_factor;
float f_pb_factor;
+ /* VBV filler: force CBR VBV and use filler bytes to ensure hard-CBR.
+ * Implied by NAL-HRD CBR. */
+ int b_filler;
+
int i_aq_mode; /* psy adaptive QP. (X264_AQ_*) */
float f_aq_strength;
int b_mb_tree; /* Macroblock-tree ratecontrol. */
/* 2pass */
int b_stat_write; /* Enable stat writing in psz_stat_out */
- char *psz_stat_out;
+ char *psz_stat_out; /* output filename (in UTF-8) of the 2pass stats file */
int b_stat_read; /* Read stat from psz_stat_in and use it */
- char *psz_stat_in;
+ char *psz_stat_in; /* input filename (in UTF-8) of the 2pass stats file */
/* 2pass params (same as ffmpeg ones) */
float f_qcompress; /* 0.0 => cbr, 1.0 => constant qp */
char *psz_zones; /* alternate method of specifying zones */
} rc;
+ /* Cropping Rectangle parameters: added to those implicitly defined by
+ non-mod16 video resolutions. */
+ struct
+ {
+ unsigned int i_left;
+ unsigned int i_top;
+ unsigned int i_right;
+ unsigned int i_bottom;
+ } crop_rect;
+
+ /* frame packing arrangement flag */
+ int i_frame_packing;
+
/* Muxing parameters */
int b_aud; /* generate access unit delimiters */
int b_repeat_headers; /* put SPS/PPS before each keyframe */
int b_annexb; /* if set, place start codes (4 bytes) before NAL units,
* otherwise place size (4 bytes) before NAL units. */
int i_sps_id; /* SPS and PPS id number */
- int b_vfr_input; /* VFR input */
+ int b_vfr_input; /* VFR input. If 1, use timebase and timestamps for ratecontrol purposes.
+ * If 0, use fps only. */
+ int b_pulldown; /* use explicity set timebase for CFR */
uint32_t i_fps_num;
uint32_t i_fps_den;
uint32_t i_timebase_num; /* Timebase numerator */
uint32_t i_timebase_den; /* Timebase denominator */
- int b_dts_compress; /* DTS compression: this algorithm eliminates negative DTS
- * by compressing them to be less than the second PTS.
- * Warning: this will change the timebase! */
int b_tff;
int b_fake_interlaced;
+ /* Don't optimize header parameters based on video content, e.g. ensure that splitting an input video, compressing
+ * each part, and stitching them back together will result in identical SPS/PPS. This is necessary for stitching
+ * with container formats that don't allow multiple SPS/PPS. */
+ int b_stitchable;
+
+ int b_opencl; /* use OpenCL when available */
+ int i_opencl_device; /* specify count of GPU devices to skip, for CLI users */
+ void *opencl_device_id; /* pass explicit cl_device_id as void*, for API users */
+ char *psz_clbin_file; /* filename (in UTF-8) of the compiled OpenCL kernel cache file */
+
/* Slicing parameters */
int i_slice_max_size; /* Max size per slice in bytes; includes estimated NAL overhead. */
int i_slice_max_mbs; /* Max number of MBs per slice; overrides i_slice_count. */
+ int i_slice_min_mbs; /* Min number of MBs per slice */
int i_slice_count; /* Number of slices per frame: forces rectangular slices. */
+ int i_slice_count_max; /* Absolute cap on slices per frame; stops applying slice-max-size
+ * and slice-max-mbs if this is reached. */
/* Optional callback for freeing this x264_param_t when it is done being used.
* Only used when the x264_param_t sits in memory for an indefinite period of time,
* i.e. when an x264_param_t is passed to x264_t in an x264_picture_t or in zones.
* Not used when x264_encoder_reconfig is called directly. */
void (*param_free)( void* );
+
+ /* Optional low-level callback for low-latency encoding. Called for each output NAL unit
+ * immediately after the NAL unit is finished encoding. This allows the calling application
+ * to begin processing video data (e.g. by sending packets over a network) before the frame
+ * is done encoding.
+ *
+ * This callback MUST do the following in order to work correctly:
+ * 1) Have available an output buffer of at least size nal->i_payload*3/2 + 5 + 64.
+ * 2) Call x264_nal_encode( h, dst, nal ), where dst is the output buffer.
+ * After these steps, the content of nal is valid and can be used in the same way as if
+ * the NAL unit were output by x264_encoder_encode.
+ *
+ * This does not need to be synchronous with the encoding process: the data pointed to
+ * by nal (both before and after x264_nal_encode) will remain valid until the next
+ * x264_encoder_encode call. The callback must be re-entrant.
+ *
+ * This callback does not work with frame-based threads; threads must be disabled
+ * or sliced-threads enabled. This callback also does not work as one would expect
+ * with HRD -- since the buffering period SEI cannot be calculated until the frame
+ * is finished encoding, it will not be sent via this callback.
+ *
+ * Note also that the NALs are not necessarily returned in order when sliced threads is
+ * enabled. Accordingly, the variable i_first_mb and i_last_mb are available in
+ * x264_nal_t to help the calling application reorder the slices if necessary.
+ *
+ * When this callback is enabled, x264_encoder_encode does not return valid NALs;
+ * the calling application is expected to acquire all output NALs through the callback.
+ *
+ * It is generally sensible to combine this callback with a use of slice-max-mbs or
+ * slice-max-size.
+ *
+ * The opaque pointer is the opaque pointer from the input frame associated with this
+ * NAL unit. This helps distinguish between nalu_process calls from different sources,
+ * e.g. if doing multiple encodes in one process.
+ */
+ void (*nalu_process) ( x264_t *h, x264_nal_t *nal, void *opaque );
} x264_param_t;
+void x264_nal_encode( x264_t *h, uint8_t *dst, x264_nal_t *nal );
+
/****************************************************************************
* H.264 level restriction information
****************************************************************************/
-typedef struct {
+typedef struct x264_level_t
+{
int level_idc;
int mbps; /* max macroblock processing rate (macroblocks/sec) */
int frame_size; /* max frame size (macroblocks) */
- int dpb; /* max decoded picture buffer (bytes) */
+ int dpb; /* max decoded picture buffer (mbs) */
int bitrate; /* max bitrate (kbit/sec) */
int cpb; /* max vbv buffer (kbit) */
int mv_range; /* max vertical mv component range (pixels) */
} x264_level_t;
/* all of the levels defined in the standard, terminated by .level_idc=0 */
-extern const x264_level_t x264_levels[];
+X264_API extern const x264_level_t x264_levels[];
/****************************************************************************
* Basic parameter handling functions
* Currently available presets are, ordered from fastest to slowest: */
static const char * const x264_preset_names[] = { "ultrafast", "superfast", "veryfast", "faster", "fast", "medium", "slow", "slower", "veryslow", "placebo", 0 };
-/* Warning: the speed of these presets scales dramatically. Ultrafast is a full
+/* The presets can also be indexed numerically, as in:
+ * x264_param_default_preset( ¶m, "3", ... )
+ * with ultrafast mapping to "0" and placebo mapping to "9". This mapping may
+ * of course change if new presets are added in between, but will always be
+ * ordered from fastest to slowest.
+ *
+ * Warning: the speed of these presets scales dramatically. Ultrafast is a full
* 100 times faster than placebo!
*
* Currently available tunings are: */
/* Multiple tunings can be used if separated by a delimiter in ",./-+",
* however multiple psy tunings cannot be used.
- * film, animation, grain, psnr, and ssim are psy tunings.
+ * film, animation, grain, stillimage, psnr, and ssim are psy tunings.
*
* returns 0 on success, negative on failure (e.g. invalid preset/tune name). */
int x264_param_default_preset( x264_param_t *, const char *preset, const char *tune );
/* x264_param_apply_profile:
* Applies the restrictions of the given profile.
* Currently available profiles are, from most to least restrictive: */
-static const char * const x264_profile_names[] = { "baseline", "main", "high", 0 };
+static const char * const x264_profile_names[] = { "baseline", "main", "high", "high10", "high422", "high444", 0 };
/* (can be NULL, in which case the function will do nothing)
*
* Picture structures and functions
****************************************************************************/
+/* x264_bit_depth:
+ * Specifies the number of bits per pixel that x264 uses. This is also the
+ * bit depth that x264 encodes in. If this value is > 8, x264 will read
+ * two bytes of input data for each pixel sample, and expect the upper
+ * (16-x264_bit_depth) bits to be zero.
+ * Note: The flag X264_CSP_HIGH_DEPTH must be used to specify the
+ * colorspace depth as well. */
+X264_API extern const int x264_bit_depth;
+
+/* x264_chroma_format:
+ * Specifies the chroma formats that x264 supports encoding. When this
+ * value is non-zero, then it represents a X264_CSP_* that is the only
+ * chroma format that x264 supports encoding. If the value is 0 then
+ * there are no restrictions. */
+X264_API extern const int x264_chroma_format;
+
enum pic_struct_e
{
PIC_STRUCT_AUTO = 0, // automatically decide (default)
PIC_STRUCT_TRIPLE = 9, // triple frame
};
-typedef struct
+typedef struct x264_hrd_t
{
double cpb_initial_arrival_time;
double cpb_final_arrival_time;
double dpb_output_time;
} x264_hrd_t;
-typedef struct
+/* Arbitrary user SEI:
+ * Payload size is in bytes and the payload pointer must be valid.
+ * Payload types and syntax can be found in Annex D of the H.264 Specification.
+ * SEI payload alignment bits as described in Annex D must be included at the
+ * end of the payload if needed.
+ * The payload should not be NAL-encapsulated.
+ * Payloads are written first in order of input, apart from in the case when HRD
+ * is enabled where payloads are written after the Buffering Period SEI. */
+
+typedef struct x264_sei_payload_t
+{
+ int payload_size;
+ int payload_type;
+ uint8_t *payload;
+} x264_sei_payload_t;
+
+typedef struct x264_sei_t
+{
+ int num_payloads;
+ x264_sei_payload_t *payloads;
+ /* In: optional callback to free each payload AND x264_sei_payload_t when used. */
+ void (*sei_free)( void* );
+} x264_sei_t;
+
+typedef struct x264_image_t
{
int i_csp; /* Colorspace */
int i_plane; /* Number of image planes */
uint8_t *plane[4]; /* Pointers to each plane */
} x264_image_t;
-typedef struct
+typedef struct x264_image_properties_t
+{
+ /* All arrays of data here are ordered as follows:
+ * each array contains one offset per macroblock, in raster scan order. In interlaced
+ * mode, top-field MBs and bottom-field MBs are interleaved at the row level.
+ * Macroblocks are 16x16 blocks of pixels (with respect to the luma plane). For the
+ * purposes of calculating the number of macroblocks, width and height are rounded up to
+ * the nearest 16. If in interlaced mode, height is rounded up to the nearest 32 instead. */
+
+ /* In: an array of quantizer offsets to be applied to this image during encoding.
+ * These are added on top of the decisions made by x264.
+ * Offsets can be fractional; they are added before QPs are rounded to integer.
+ * Adaptive quantization must be enabled to use this feature. Behavior if quant
+ * offsets differ between encoding passes is undefined. */
+ float *quant_offsets;
+ /* In: optional callback to free quant_offsets when used.
+ * Useful if one wants to use a different quant_offset array for each frame. */
+ void (*quant_offsets_free)( void* );
+
+ /* In: optional array of flags for each macroblock.
+ * Allows specifying additional information for the encoder such as which macroblocks
+ * remain unchanged. Usable flags are listed below.
+ * x264_param_t.analyse.b_mb_info must be set to use this, since x264 needs to track
+ * extra data internally to make full use of this information.
+ *
+ * Out: if b_mb_info_update is set, x264 will update this array as a result of encoding.
+ *
+ * For "MBINFO_CONSTANT", it will remove this flag on any macroblock whose decoded
+ * pixels have changed. This can be useful for e.g. noting which areas of the
+ * frame need to actually be blitted. Note: this intentionally ignores the effects
+ * of deblocking for the current frame, which should be fine unless one needs exact
+ * pixel-perfect accuracy.
+ *
+ * Results for MBINFO_CONSTANT are currently only set for P-frames, and are not
+ * guaranteed to enumerate all blocks which haven't changed. (There may be false
+ * negatives, but no false positives.)
+ */
+ uint8_t *mb_info;
+ /* In: optional callback to free mb_info when used. */
+ void (*mb_info_free)( void* );
+
+ /* The macroblock is constant and remains unchanged from the previous frame. */
+ #define X264_MBINFO_CONSTANT (1<<0)
+ /* More flags may be added in the future. */
+
+ /* Out: SSIM of the the frame luma (if x264_param_t.b_ssim is set) */
+ double f_ssim;
+ /* Out: Average PSNR of the frame (if x264_param_t.b_psnr is set) */
+ double f_psnr_avg;
+ /* Out: PSNR of Y, U, and V (if x264_param_t.b_psnr is set) */
+ double f_psnr[3];
+
+ /* Out: Average effective CRF of the encoded frame */
+ double f_crf_avg;
+} x264_image_properties_t;
+
+typedef struct x264_picture_t
{
/* In: force picture type (if not auto)
* If x264 encoding parameters are violated in the forcing of picture types,
* x264 will correct the input picture type and log a warning.
- * The quality of frametype decisions may suffer if a great deal of fine-grained
- * mixing of auto and forced frametypes is done.
* Out: type of the picture encoded */
int i_type;
- /* In: force quantizer for > 0 */
+ /* In: force quantizer for != X264_QP_AUTO */
int i_qpplus1;
- /* In: pic_struct, for pulldown/doubling/etc...used only if b_pic_timing_sei=1.
- * use pic_struct_e for pic_struct inputs */
+ /* In: pic_struct, for pulldown/doubling/etc...used only if b_pic_struct=1.
+ * use pic_struct_e for pic_struct inputs
+ * Out: pic_struct element associated with frame */
int i_pic_struct;
/* Out: whether this frame is a keyframe. Important when using modes that result in
* SEI recovery points being used instead of IDR frames. */
int b_keyframe;
/* In: user pts, Out: pts of encoded picture (user)*/
int64_t i_pts;
- /* Out: frame dts. Since the pts of the first frame is always zero,
+ /* Out: frame dts. When the pts of the first frame is close to zero,
* initial frames may have a negative dts which must be dealt with by any muxer */
int64_t i_dts;
/* In: custom encoding parameters to be set from this frame forwards
of H.264 itself; in this case, the caller must force an IDR frame
if it needs the changed parameter to apply immediately. */
x264_param_t *param;
- /* In: raw data */
+ /* In: raw image data */
+ /* Out: reconstructed image data. x264 may skip part of the reconstruction process,
+ e.g. deblocking, in frames where it isn't necessary. To force complete
+ reconstruction, at a small speed cost, set b_full_recon. */
x264_image_t img;
+ /* In: optional information to modify encoder decisions for this frame
+ * Out: information about the encoded frame */
+ x264_image_properties_t prop;
/* Out: HRD timing information. Output only when i_nal_hrd is set. */
x264_hrd_t hrd_timing;
- /* private user data. libx264 doesn't touch this,
- not even copy it from input to output frames. */
+ /* In: arbitrary user SEI (e.g subtitles, AFDs) */
+ x264_sei_t extra_sei;
+ /* private user data. copied from input to output frames. */
void *opaque;
} x264_picture_t;
+/* x264_picture_init:
+ * initialize an x264_picture_t. Needs to be done if the calling application
+ * allocates its own x264_picture_t as opposed to using x264_picture_alloc. */
+void x264_picture_init( x264_picture_t *pic );
+
/* x264_picture_alloc:
* alloc data for a picture. You must call x264_picture_clean on it.
- * returns 0 on success, or -1 on malloc failure. */
+ * returns 0 on success, or -1 on malloc failure or invalid colorspace. */
int x264_picture_alloc( x264_picture_t *pic, int i_csp, int i_width, int i_height );
/* x264_picture_clean:
* x264_picture_alloc ONLY */
void x264_picture_clean( x264_picture_t *pic );
-/****************************************************************************
- * NAL structure and functions
- ****************************************************************************/
-
-enum nal_unit_type_e
-{
- NAL_UNKNOWN = 0,
- NAL_SLICE = 1,
- NAL_SLICE_DPA = 2,
- NAL_SLICE_DPB = 3,
- NAL_SLICE_DPC = 4,
- NAL_SLICE_IDR = 5, /* ref_idc != 0 */
- NAL_SEI = 6, /* ref_idc == 0 */
- NAL_SPS = 7,
- NAL_PPS = 8,
- NAL_AUD = 9,
- NAL_FILLER = 12,
- /* ref_idc == 0 for 6,9,10,11,12 */
-};
-enum nal_priority_e
-{
- NAL_PRIORITY_DISPOSABLE = 0,
- NAL_PRIORITY_LOW = 1,
- NAL_PRIORITY_HIGH = 2,
- NAL_PRIORITY_HIGHEST = 3,
-};
-
-/* The data within the payload is already NAL-encapsulated; the ref_idc and type
- * are merely in the struct for easy access by the calling application.
- * All data returned in an x264_nal_t, including the data in p_payload, is no longer
- * valid after the next call to x264_encoder_encode. Thus it must be used or copied
- * before calling x264_encoder_encode or x264_encoder_headers again. */
-typedef struct
-{
- int i_ref_idc; /* nal_priority_e */
- int i_type; /* nal_unit_type_e */
-
- /* Size of payload in bytes. */
- int i_payload;
- /* If param->b_annexb is set, Annex-B bytestream with 4-byte startcode.
- * Otherwise, startcode is replaced with a 4-byte size.
- * This size is the size used in mp4/similar muxing; it is equal to i_payload-4 */
- uint8_t *p_payload;
-} x264_nal_t;
-
/****************************************************************************
* Encoder functions
****************************************************************************/
* due to delay, this may not be the next frame passed to encoder_encode.
* if the change should apply to some particular frame, use x264_picture_t->param instead.
* returns 0 on success, negative on parameter validation error.
- * not all parameters can be changed; see the actual function for a detailed breakdown. */
+ * not all parameters can be changed; see the actual function for a detailed breakdown.
+ *
+ * since not all parameters can be changed, moving from preset to preset may not always
+ * fully copy all relevant parameters, but should still work usably in practice. however,
+ * more so than for other presets, many of the speed shortcuts used in ultrafast cannot be
+ * switched out of; using reconfig to switch between ultrafast and other presets is not
+ * recommended without a more fine-grained breakdown of parameters to take this into account. */
int x264_encoder_reconfig( x264_t *, x264_param_t * );
/* x264_encoder_parameters:
* copies the current internal set of parameters to the pointer provided
/* x264_encoder_headers:
* return the SPS and PPS that will be used for the whole stream.
* *pi_nal is the number of NAL units outputted in pp_nal.
+ * returns the number of bytes in the returned NALs.
* returns negative on error.
* the payloads of all output NALs are guaranteed to be sequential in memory. */
int x264_encoder_headers( x264_t *, x264_nal_t **pp_nal, int *pi_nal );
/* x264_encoder_encode:
* encode one picture.
* *pi_nal is the number of NAL units outputted in pp_nal.
- * returns negative on error, zero if no NAL units returned.
+ * returns the number of bytes in the returned NALs.
+ * returns negative on error and zero if no NAL units returned.
* the payloads of all output NALs are guaranteed to be sequential in memory. */
int x264_encoder_encode( x264_t *, x264_nal_t **pp_nal, int *pi_nal, x264_picture_t *pic_in, x264_picture_t *pic_out );
/* x264_encoder_close:
* return the number of currently delayed (buffered) frames
* this should be used at the end of the stream, to know when you have all the encoded frames. */
int x264_encoder_delayed_frames( x264_t * );
+/* x264_encoder_maximum_delayed_frames( x264_t *h ):
+ * return the maximum number of delayed (buffered) frames that can occur with the current
+ * parameters. */
+int x264_encoder_maximum_delayed_frames( x264_t *h );
/* x264_encoder_intra_refresh:
* If an intra refresh is not in progress, begin one with the next P-frame.
* If an intra refresh is in progress, begin one as soon as the current one finishes.
* Requires that b_intra_refresh be set.
+ *
* Useful for interactive streaming where the client can tell the server that packet loss has
* occurred. In this case, keyint can be set to an extremely high value so that intra refreshes
- * only occur when calling x264_encoder_intra_refresh. */
+ * only occur when calling x264_encoder_intra_refresh.
+ *
+ * In multi-pass encoding, if x264_encoder_intra_refresh is called differently in each pass,
+ * behavior is undefined.
+ *
+ * Should not be called during an x264_encoder_encode. */
void x264_encoder_intra_refresh( x264_t * );
+/* x264_encoder_invalidate_reference:
+ * An interactive error resilience tool, designed for use in a low-latency one-encoder-few-clients
+ * system. When the client has packet loss or otherwise incorrectly decodes a frame, the encoder
+ * can be told with this command to "forget" the frame and all frames that depend on it, referencing
+ * only frames that occurred before the loss. This will force a keyframe if no frames are left to
+ * reference after the aforementioned "forgetting".
+ *
+ * It is strongly recommended to use a large i_dpb_size in this case, which allows the encoder to
+ * keep around extra, older frames to fall back on in case more recent frames are all invalidated.
+ * Unlike increasing i_frame_reference, this does not increase the number of frames used for motion
+ * estimation and thus has no speed impact. It is also recommended to set a very large keyframe
+ * interval, so that keyframes are not used except as necessary for error recovery.
+ *
+ * x264_encoder_invalidate_reference is not currently compatible with the use of B-frames or intra
+ * refresh.
+ *
+ * In multi-pass encoding, if x264_encoder_invalidate_reference is called differently in each pass,
+ * behavior is undefined.
+ *
+ * Should not be called during an x264_encoder_encode, but multiple calls can be made simultaneously.
+ *
+ * Returns 0 on success, negative on failure. */
+int x264_encoder_invalidate_reference( x264_t *, int64_t pts );
+
+#ifdef __cplusplus
+}
+#endif
#endif
projects / x264 / blobdiff