/**
* @file avcodec.h
- * @brief
- * external api header
+ * external api header.
*/
#include "common.h"
-#define LIBAVCODEC_VERSION_INT 0x000406
-#define LIBAVCODEC_VERSION "0.4.6"
-#define LIBAVCODEC_BUILD 4659
-#define LIBAVCODEC_BUILD_STR "4659"
+#define FFMPEG_VERSION_INT 0x000408
+#define FFMPEG_VERSION "0.4.8"
+#define LIBAVCODEC_BUILD 4681
+
+#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
+#define LIBAVCODEC_VERSION FFMPEG_VERSION
+
+#define AV_STRINGIFY(s) AV_TOSTRING(s)
+#define AV_TOSTRING(s) #s
+#define LIBAVCODEC_IDENT "FFmpeg" LIBAVCODEC_VERSION "b" AV_STRINGIFY(LIBAVCODEC_BUILD)
enum CodecID {
CODEC_ID_NONE,
CODEC_ID_MPEG1VIDEO,
+ CODEC_ID_MPEG2VIDEO, /* prefered ID for MPEG Video 1 or 2 decoding */
+ CODEC_ID_MPEG2VIDEO_XVMC,
CODEC_ID_H263,
CODEC_ID_RV10,
CODEC_ID_MP2,
- CODEC_ID_MP3LAME,
+ CODEC_ID_MP3, /* prefered ID for MPEG Audio layer 1, 2 or3 decoding */
CODEC_ID_VORBIS,
CODEC_ID_AC3,
CODEC_ID_MJPEG,
CODEC_ID_MJPEGB,
+ CODEC_ID_LJPEG,
CODEC_ID_MPEG4,
CODEC_ID_RAWVIDEO,
CODEC_ID_MSMPEG4V1,
CODEC_ID_WMV2,
CODEC_ID_H263P,
CODEC_ID_H263I,
+ CODEC_ID_FLV1,
CODEC_ID_SVQ1,
+ CODEC_ID_SVQ3,
CODEC_ID_DVVIDEO,
CODEC_ID_DVAUDIO,
CODEC_ID_WMAV1,
CODEC_ID_MACE6,
CODEC_ID_HUFFYUV,
CODEC_ID_CYUV,
+ CODEC_ID_H264,
+ CODEC_ID_INDEO3,
+ CODEC_ID_VP3,
+ CODEC_ID_AAC,
+ CODEC_ID_MPEG4AAC,
+ CODEC_ID_ASV1,
+ CODEC_ID_ASV2,
+ CODEC_ID_FFV1,
+ CODEC_ID_4XM,
+ CODEC_ID_VCR1,
+ CODEC_ID_CLJR,
+ CODEC_ID_MDEC,
+ CODEC_ID_ROQ,
+ CODEC_ID_INTERPLAY_VIDEO,
+ CODEC_ID_XAN_WC3,
+ CODEC_ID_XAN_WC4,
/* various pcm "codecs" */
CODEC_ID_PCM_S16LE,
/* various adpcm codecs */
CODEC_ID_ADPCM_IMA_QT,
CODEC_ID_ADPCM_IMA_WAV,
+ CODEC_ID_ADPCM_IMA_DK3,
+ CODEC_ID_ADPCM_IMA_DK4,
CODEC_ID_ADPCM_MS,
+ CODEC_ID_ADPCM_4XM,
+
+ /* AMR */
+ CODEC_ID_AMR_NB,
+ CODEC_ID_AMR_WB,
+
+ /* RealAudio codecs*/
+ CODEC_ID_RA_144,
+ CODEC_ID_RA_288,
+
+ /* various DPCM codecs */
+ CODEC_ID_ROQ_DPCM,
+ CODEC_ID_INTERPLAY_DPCM,
+ CODEC_ID_XAN_DPCM,
};
+/* CODEC_ID_MP3LAME is absolete */
+#define CODEC_ID_MP3LAME CODEC_ID_MP3
+
enum CodecType {
CODEC_TYPE_UNKNOWN = -1,
CODEC_TYPE_VIDEO,
CODEC_TYPE_AUDIO,
};
+/**
+ * Pixel format. Notes:
+ *
+ * PIX_FMT_RGBA32 is handled in an endian-specific manner. A RGBA
+ * color is put together as:
+ * (A << 24) | (R << 16) | (G << 8) | B
+ * This is stored as BGRA on little endian CPU architectures and ARGB on
+ * big endian CPUs.
+ *
+ * When the pixel format is palettized RGB (PIX_FMT_PAL8), the palettized
+ * image data is stored in AVFrame.data[0]. The palette is transported in
+ * AVFrame.data[1] and, is 1024 bytes long (256 4-byte entries) and is
+ * formatted the same as in PIX_FMT_RGBA32 described above (i.e., it is
+ * also endian-specific).
+ */
enum PixelFormat {
- PIX_FMT_YUV420P,
- PIX_FMT_YUV422,
- PIX_FMT_RGB24, /* 3 bytes, R is first */
- PIX_FMT_BGR24, /* 3 bytes, B is first */
- PIX_FMT_YUV422P,
- PIX_FMT_YUV444P,
- PIX_FMT_RGBA32, /* always stored in cpu endianness */
- PIX_FMT_YUV410P,
- PIX_FMT_YUV411P,
- PIX_FMT_RGB565, /* always stored in cpu endianness */
- PIX_FMT_RGB555, /* always stored in cpu endianness, most significant bit to 1 */
+ PIX_FMT_YUV420P, ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
+ PIX_FMT_YUV422,
+ PIX_FMT_RGB24, ///< Packed pixel, 3 bytes per pixel, RGBRGB...
+ PIX_FMT_BGR24, ///< Packed pixel, 3 bytes per pixel, BGRBGR...
+ PIX_FMT_YUV422P, ///< Planar YUV 4:2:2 (1 Cr & Cb sample per 2x1 Y samples)
+ PIX_FMT_YUV444P, ///< Planar YUV 4:4:4 (1 Cr & Cb sample per 1x1 Y samples)
+ PIX_FMT_RGBA32, ///< Packed pixel, 4 bytes per pixel, BGRABGRA..., stored in cpu endianness
+ PIX_FMT_YUV410P, ///< Planar YUV 4:1:0 (1 Cr & Cb sample per 4x4 Y samples)
+ PIX_FMT_YUV411P, ///< Planar YUV 4:1:1 (1 Cr & Cb sample per 4x1 Y samples)
+ PIX_FMT_RGB565, ///< always stored in cpu endianness
+ PIX_FMT_RGB555, ///< always stored in cpu endianness, most significant bit to 1
PIX_FMT_GRAY8,
- PIX_FMT_MONOWHITE, /* 0 is white */
- PIX_FMT_MONOBLACK, /* 0 is black */
- PIX_FMT_PAL8, /* 8 bit with RGBA palette */
+ PIX_FMT_MONOWHITE, ///< 0 is white
+ PIX_FMT_MONOBLACK, ///< 0 is black
+ PIX_FMT_PAL8, ///< 8 bit with RGBA palette
+ PIX_FMT_YUVJ420P, ///< Planar YUV 4:2:0 full scale (jpeg)
+ PIX_FMT_YUVJ422P, ///< Planar YUV 4:2:2 full scale (jpeg)
+ PIX_FMT_YUVJ444P, ///< Planar YUV 4:4:4 full scale (jpeg)
+ PIX_FMT_XVMC_MPEG2_MC,///< XVideo Motion Acceleration via common packet passing(xvmc_render.h)
+ PIX_FMT_XVMC_MPEG2_IDCT,
PIX_FMT_NB,
};
/* currently unused, may be used if 24/32 bits samples ever supported */
enum SampleFormat {
- SAMPLE_FMT_S16 = 0, /* signed 16 bits */
+ SAMPLE_FMT_S16 = 0, ///< signed 16 bits
};
/* in bytes */
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
/**
- * Required number of zero bytes at the end of the input bitstream for decoding.
- * to avoid overreading (and possibly segfaulting)
+ * Required number of additionally allocated bytes at the end of the input bitstream for decoding.
+ * this is mainly needed because some optimized bitstream readers read
+ * 32 or 64 bit at once and could read over the end<br>
+ * Note, if the first 23 bits of the additional bytes are not 0 then damaged
+ * MPEG bitstreams could cause overread and segfault
*/
#define FF_INPUT_BUFFER_PADDING_SIZE 8
Note: note not everything is supported yet
*/
-#define CODEC_FLAG_HQ 0x0001 /* brute force MB-type decission mode (slow) */
-#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
-#define CODEC_FLAG_4MV 0x0004 /* 4 MV per MB allowed */
-#define CODEC_FLAG_QPEL 0x0010 /* use qpel MC */
-#define CODEC_FLAG_GMC 0x0020 /* use GMC */
-#define CODEC_FLAG_PART 0x0080 /* use data partitioning */
+#define CODEC_FLAG_QSCALE 0x0002 ///< use fixed qscale
+#define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed
+#define CODEC_FLAG_QPEL 0x0010 ///< use qpel MC
+#define CODEC_FLAG_GMC 0x0020 ///< use GMC
+#define CODEC_FLAG_PART 0x0080 ///< use data partitioning
/* parent program gurantees that the input for b-frame containing streams is not written to
for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
#define CODEC_FLAG_INPUT_PRESERVED 0x0100
-#define CODEC_FLAG_PASS1 0x0200 /* use internal 2pass ratecontrol in first pass mode */
-#define CODEC_FLAG_PASS2 0x0400 /* use internal 2pass ratecontrol in second pass mode */
-#define CODEC_FLAG_EXTERN_HUFF 0x1000 /* use external huffman table (for mjpeg) */
-#define CODEC_FLAG_GRAY 0x2000 /* only decode/encode grayscale */
-#define CODEC_FLAG_EMU_EDGE 0x4000/* dont draw edges */
-#define CODEC_FLAG_PSNR 0x8000 /* error[?] variables will be set during encoding */
-#define CODEC_FLAG_TRUNCATED 0x00010000 /* input bitstream might be truncated at a random location instead
+#define CODEC_FLAG_PASS1 0x0200 ///< use internal 2pass ratecontrol in first pass mode
+#define CODEC_FLAG_PASS2 0x0400 ///< use internal 2pass ratecontrol in second pass mode
+#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg)
+#define CODEC_FLAG_GRAY 0x2000 ///< only decode/encode grayscale
+#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges
+#define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding
+#define CODEC_FLAG_TRUNCATED 0x00010000 /** input bitstream might be truncated at a random location instead
of only at frame boundaries */
-#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 /* normalize adaptive quantization */
-#define CODEC_FLAG_INTERLACED_DCT 0x00040000 /* use interlaced dct */
-#define CODEC_FLAG_LOW_DELAY 0x00080000 /* force low delay / will fail on b frames */
-#define CODEC_FLAG_ALT_SCAN 0x00100000 /* use alternate scan */
-#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 /* use trellis quantization */
-#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 /* place global headers in extradata instead of every keyframe */
-
+#define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< normalize adaptive quantization
+#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct
+#define CODEC_FLAG_LOW_DELAY 0x00080000 ///< force low delay
+#define CODEC_FLAG_ALT_SCAN 0x00100000 ///< use alternate scan
+#define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< use trellis quantization
+#define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< place global headers in extradata instead of every keyframe
+#define CODEC_FLAG_BITEXACT 0x00800000 ///< use only bitexact stuff (except (i)dct)
+/* Fx : Flag for h263+ extra options */
+#define CODEC_FLAG_H263P_AIC 0x01000000 ///< Advanced intra coding
+#define CODEC_FLAG_H263P_UMV 0x02000000 ///< Unlimited motion vector
+#define CODEC_FLAG_CBP_RD 0x04000000 ///< use rate distortion optimization for cbp
+/* For advanced prediction mode, we reuse the 4MV flag */
+/* Unsupported options :
+ * Syntax Arithmetic coding (SAC)
+ * Deblocking filter internal loop
+ * Slice structured
+ * Reference Picture Selection
+ * Independant Segment Decoding
+ * Alternative Inter * VLC
+ * Modified Quantization */
+/* /Fx */
/* codec capabilities */
-#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 /* decoder can use draw_horiz_band callback */
-#define CODEC_CAP_DR1 0x0002 /* direct rendering method 1 */
+#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback
+/**
+ * Codec uses get_buffer() for allocating buffers.
+ * direct rendering method 1
+ */
+#define CODEC_CAP_DR1 0x0002
/* if 'parse_only' field is true, then avcodec_parse_frame() can be
used */
#define CODEC_CAP_PARSE_ONLY 0x0004
#define CODEC_CAP_TRUNCATED 0x0008
-#define FRAME_RATE_BASE 10000
-
#define FF_COMMON_FRAME \
+ /**\
+ * pointer to the picture planes.\
+ * this might be different from the first allocated byte\
+ * - encoding: \
+ * - decoding: \
+ */\
uint8_t *data[4];\
int linesize[4];\
/**\
* pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
* this isnt used by lavc unless the default get/release_buffer() is used\
- * encoding: \
- * decoding: \
+ * - encoding: \
+ * - decoding: \
*/\
uint8_t *base[4];\
/**\
* 1 -> keyframe, 0-> not\
- * encoding: set by lavc\
- * decoding: set by lavc\
+ * - encoding: set by lavc\
+ * - decoding: set by lavc\
*/\
int key_frame;\
\
/**\
- * picture type of the frame, see ?_TYPE below\
- * encoding: set by lavc for coded_picture (and set by user for input)\
- * decoding: set by lavc\
+ * picture type of the frame, see ?_TYPE below.\
+ * - encoding: set by lavc for coded_picture (and set by user for input)\
+ * - decoding: set by lavc\
*/\
int pict_type;\
\
/**\
* presentation timestamp in micro seconds (time when frame should be shown to user)\
* if 0 then the frame_rate will be used as reference\
- * encoding: MUST be set by user\
- * decoding: set by lavc\
+ * - encoding: MUST be set by user\
+ * - decoding: set by lavc\
*/\
- long long int pts;\
+ int64_t pts;\
\
/**\
* picture number in bitstream order.\
- * encoding: set by\
- * decoding: set by lavc\
+ * - encoding: set by\
+ * - decoding: set by lavc\
*/\
int coded_picture_number;\
/**\
- * encoding: set by\
- * decoding: set by lavc\
* picture number in display order.\
+ * - encoding: set by\
+ * - decoding: set by lavc\
*/\
int display_picture_number;\
\
/**\
* quality (between 1 (good) and 31 (bad)) \
- * encoding: set by lavc for coded_picture (and set by user for input)\
- * decoding: set by lavc\
+ * - encoding: set by lavc for coded_picture (and set by user for input)\
+ * - decoding: set by lavc\
*/\
float quality; \
\
/**\
* buffer age (1->was last buffer and dint change, 2->..., ...).\
* set to something large if the buffer has not been used yet \
- * encoding: unused\
- * decoding: MUST be set by get_buffer()\
+ * - encoding: unused\
+ * - decoding: MUST be set by get_buffer()\
*/\
int age;\
\
/**\
* is this picture used as reference\
- * encoding: unused\
- * decoding: set by lavc (before get_buffer() call))\
+ * - encoding: unused\
+ * - decoding: set by lavc (before get_buffer() call))\
*/\
int reference;\
\
/**\
* QP table\
- * encoding: unused\
- * decoding: set by lavc\
+ * - encoding: unused\
+ * - decoding: set by lavc\
*/\
int8_t *qscale_table;\
/**\
* QP store stride\
- * encoding: unused\
- * decoding: set by lavc\
+ * - encoding: unused\
+ * - decoding: set by lavc\
*/\
int qstride;\
\
/**\
* mbskip_table[mb]>=1 if MB didnt change\
* stride= mb_width = (width+15)>>4\
- * encoding: unused\
- * decoding: set by lavc\
+ * - encoding: unused\
+ * - decoding: set by lavc\
*/\
uint8_t *mbskip_table;\
\
/**\
* for some private data of the user\
- * encoding: unused\
- * decoding: set by user\
+ * - encoding: unused\
+ * - decoding: set by user\
*/\
void *opaque;\
\
/**\
* error\
- * encoding: set by lavc if flags&CODEC_FLAG_PSNR\
- * decoding: unused\
+ * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
+ * - decoding: unused\
*/\
uint64_t error[4];\
\
/**\
* type of the buffer (to keep track of who has to dealloc data[*])\
- * encoding: set by the one who allocs it\
- * decoding: set by the one who allocs it\
- * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
+ * - encoding: set by the one who allocs it\
+ * - decoding: set by the one who allocs it\
+ * Note: user allocated (direct rendering) & internal buffers can not coexist currently\
*/\
int type;\
\
/**\
* when decoding, this signal how much the picture must be delayed.\
* extra_delay = repeat_pict / (2*fps)\
- * encoding: unused\
- * decoding: set by lavc\
+ * - encoding: unused\
+ * - decoding: set by lavc\
*/\
- int repeat_pict;
+ int repeat_pict;\
+ \
+ /**\
+ * \
+ */\
+ int qscale_type;\
+#define FF_QSCALE_TYPE_MPEG1 0
+#define FF_QSCALE_TYPE_MPEG2 1
#define FF_BUFFER_TYPE_INTERNAL 1
-#define FF_BUFFER_TYPE_USER 2 // Direct rendering buffers
-#define FF_BUFFER_TYPE_SHARED 4 // input frame for encoding(wont be dealloced)
+#define FF_BUFFER_TYPE_USER 2 ///< Direct rendering buffers (image is (de)allocated by user)
+#define FF_BUFFER_TYPE_SHARED 4 ///< buffer from somewher else, dont dealloc image (data/base)
+#define FF_BUFFER_TYPE_COPY 8 ///< just a (modified) copy of some other buffer, dont dealloc anything
#define FF_I_TYPE 1 // Intra
#define FF_P_TYPE 2 // Predicted
#define FF_B_TYPE 3 // Bi-dir predicted
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
+#define FF_SI_TYPE 5
+#define FF_SP_TYPE 6
+/**
+ * Audio Video Frame.
+ */
typedef struct AVFrame {
FF_COMMON_FRAME
} AVFrame;
+#define DEFAULT_FRAME_RATE_BASE 1001000
+
+/**
+ * main external api structure.
+ */
typedef struct AVCodecContext {
/**
- * the average bitrate
- * encoding: set by user. unused for constant quantizer encoding
- * decoding: set by lavc. 0 or some bitrate if this info is available in the stream
+ * the average bitrate.
+ * - encoding: set by user. unused for constant quantizer encoding
+ * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream
*/
int bit_rate;
/**
- * number of bits the bitstream is allowed to diverge from the reference
+ * number of bits the bitstream is allowed to diverge from the reference.
* the reference can be CBR (for CBR pass1) or VBR (for pass2)
- * encoding: set by user. unused for constant quantizer encoding
- * decoding: unused
+ * - encoding: set by user. unused for constant quantizer encoding
+ * - decoding: unused
*/
int bit_rate_tolerance;
/**
- * CODEC_FLAG_*
- * encoding: set by user.
- * decoding: set by user.
+ * CODEC_FLAG_*.
+ * - encoding: set by user.
+ * - decoding: set by user.
*/
int flags;
/**
* some codecs needs additionnal format info. It is stored here
- * encoding: set by user.
- * decoding: set by lavc. (FIXME is this ok?)
+ * - encoding: set by user.
+ * - decoding: set by lavc. (FIXME is this ok?)
*/
int sub_id;
/**
- * motion estimation algorithm used for video coding
- * encoding: MUST be set by user.
- * decoding: unused
+ * motion estimation algorithm used for video coding.
+ * - encoding: MUST be set by user.
+ * - decoding: unused
*/
int me_method;
/**
- * some codecs need / can use extra-data like huffman tables
+ * some codecs need / can use extra-data like huffman tables.
* mjpeg: huffman tables
* rv10: additional flags
* mpeg4: global headers (they can be in the bitstream or here)
- * encoding: set/allocated/freed by lavc.
- * decoding: set/allocated/freed by user.
+ * - encoding: set/allocated/freed by lavc.
+ * - decoding: set/allocated/freed by user.
*/
void *extradata;
int extradata_size;
/* video only */
/**
- * frames per sec multiplied by FRAME_RATE_BASE
+ * frames per sec multiplied by frame_rate_base.
* for variable fps this is the precission, so if the timestamps
- * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
- * encoding: MUST be set by user
- * decoding: set by lavc. 0 or the frame_rate if available
+ * can be specified in msec precssion then this is 1000*frame_rate_base
+ * - encoding: MUST be set by user
+ * - decoding: set by lavc. 0 or the frame_rate if available
*/
int frame_rate;
-
+
/**
- * encoding: MUST be set by user.
- * decoding: set by user, some codecs might override / change it during playback
+ * width / height.
+ * - encoding: MUST be set by user.
+ * - decoding: set by user, some codecs might override / change it during playback
*/
int width, height;
#define FF_ASPECT_EXTENDED 15
/**
- * the number of pictures in a group of pitures, or 0 for intra_only
- * encoding: set by user.
- * decoding: unused
+ * the number of pictures in a group of pitures, or 0 for intra_only.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int gop_size;
/**
- * pixel format, see PIX_FMT_xxx
- * encoding: unused
- * decoding: set by lavc.
+ * pixel format, see PIX_FMT_xxx.
+ * - encoding: FIXME: used by ffmpeg to decide whether an pix_fmt
+ * conversion is in order. This only works for
+ * codecs with one supported pix_fmt, we should
+ * do something for a generic case as well.
+ * - decoding: set by lavc.
*/
enum PixelFormat pix_fmt;
-
+
+ /**
+ * Frame rate emulation. If not zero lower layer (i.e. format handler)
+ * has to read frames at native frame rate.
+ * - encoding: set by user.
+ * - decoding: unused.
+ */
+ int rate_emu;
+
/**
* if non NULL, 'draw_horiz_band' is called by the libavcodec
* decoder to draw an horizontal band. It improve cache usage. Not
* all codecs can do that. You must check the codec capabilities
* before
- * encoding: unused
- * decoding: set by user.
+ * - encoding: unused
+ * - decoding: set by user.
+ * @param height the height of the slice
+ * @param y the y position of the slice
+ * @param type 1->top field, 2->bottom field, 3->frame
+ * @param offset offset into the AVFrame.data from which the slice should be read
*/
void (*draw_horiz_band)(struct AVCodecContext *s,
- uint8_t **src_ptr, int linesize,
- int y, int width, int height);
+ const AVFrame *src, int offset[4],
+ int y, int type, int height);
/* audio only */
- int sample_rate; /* samples per sec */
+ int sample_rate; ///< samples per sec
int channels;
- int sample_fmt; /* sample format, currenly unused */
+ int sample_fmt; ///< sample format, currenly unused
/* the following data should not be initialized */
- int frame_size; /* in samples, initialized when calling 'init' */
- int frame_number; /* audio or video frame number */
- int real_pict_num; /* returns the real picture number of
- previous encoded frame */
+ int frame_size; ///< in samples, initialized when calling 'init'
+ int frame_number; ///< audio or video frame number
+ int real_pict_num; ///< returns the real picture number of previous encoded frame
/**
* number of frames the decoded output will be delayed relative to
- * the encoded input
- * encoding: set by lavc.
- * decoding: unused
+ * the encoded input.
+ * - encoding: set by lavc.
+ * - decoding: unused
*/
int delay;
- /* encoding parameters */
- float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0)*/
- float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
+ /* - encoding parameters */
+ float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
+ float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
/**
- * minimum quantizer
- * encoding: set by user.
- * decoding: unused
+ * minimum quantizer.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int qmin;
/**
- * maximum quantizer
- * encoding: set by user.
- * decoding: unused
+ * maximum quantizer.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int qmax;
/**
- * maximum quantizer difference etween frames
- * encoding: set by user.
- * decoding: unused
+ * maximum quantizer difference etween frames.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int max_qdiff;
/**
- * maximum number of b frames between non b frames
+ * maximum number of b frames between non b frames.
* note: the output will be delayed by max_b_frames+1 relative to the input
- * encoding: set by user.
- * decoding: unused
+ * - encoding: set by user.
+ * - decoding: unused
*/
int max_b_frames;
/**
- * qscale factor between ip and b frames
- * encoding: set by user.
- * decoding: unused
+ * qscale factor between ip and b frames.
+ * - encoding: set by user.
+ * - decoding: unused
*/
float b_quant_factor;
int b_frame_strategy;
/**
- * encoding: unused
- * decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
+ * hurry up amount.
+ * - encoding: unused
+ * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
*/
int hurry_up;
int misc_bits;
/**
- * number of bits used for the previously encoded frame
- * encoding: set by lavc
- * decoding: - for audio - bits_per_sample
+ * number of bits used for the previously encoded frame.
+ * - encoding: set by lavc
+ * - decoding: unused
*/
int frame_bits;
-
+
/**
- * private data of the user, can be used to carry app specific stuff
- * encoding: set by user
- * decoding: set by user
+ * private data of the user, can be used to carry app specific stuff.
+ * - encoding: set by user
+ * - decoding: set by user
*/
void *opaque;
char codec_name[32];
enum CodecType codec_type; /* see CODEC_TYPE_xxx */
enum CodecID codec_id; /* see CODEC_ID_xxx */
- unsigned int codec_tag; /* codec tag, only used if unknown codec */
/**
- * workaround bugs in encoders which sometimes cannot be detected automatically
- * encoding: unused
- * decoding: set by user
+ * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
+ * this is used to workaround some encoder bugs
+ * - encoding: set by user, if not then the default based on codec_id will be used
+ * - decoding: set by user, will be converted to upper case by lavc during init
+ */
+ unsigned int codec_tag;
+
+ /**
+ * workaround bugs in encoders which sometimes cannot be detected automatically.
+ * - encoding: unused
+ * - decoding: set by user
*/
int workaround_bugs;
-#define FF_BUG_AUTODETECT 1 //autodetection
+#define FF_BUG_AUTODETECT 1 ///< autodetection
#define FF_BUG_OLD_MSMPEG4 2
#define FF_BUG_XVID_ILACE 4
#define FF_BUG_UMP4 8
#define FF_BUG_STD_QPEL 128
#define FF_BUG_QPEL_CHROMA2 256
#define FF_BUG_DIRECT_BLOCKSIZE 512
+#define FF_BUG_EDGE 1024
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
/**
- * encoding: set by user
- * decoding: unused
+ * luma single coeff elimination threshold.
+ * - encoding: set by user
+ * - decoding: unused
*/
int luma_elim_threshold;
/**
- * encoding: set by user
- * decoding: unused
+ * chroma single coeff elimination threshold.
+ * - encoding: set by user
+ * - decoding: unused
*/
int chroma_elim_threshold;
/**
- * strictly follow the std (MPEG4, ...)
- * encoding: set by user
- * decoding: unused
+ * strictly follow the std (MPEG4, ...).
+ * - encoding: set by user
+ * - decoding: unused
*/
int strict_std_compliance;
/**
- * qscale offset between ip and b frames
+ * qscale offset between ip and b frames.
* if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
* if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
- * encoding: set by user.
- * decoding: unused
+ * - encoding: set by user.
+ * - decoding: unused
*/
float b_quant_offset;
/**
* error resilience higher values will detect more errors but may missdetect
- * some more or less valid parts as errors
- * encoding: unused
- * decoding: set by user
+ * some more or less valid parts as errors.
+ * - encoding: unused
+ * - decoding: set by user
*/
int error_resilience;
#define FF_ER_CAREFULL 1
/**
* called at the beginning of each frame to get a buffer for it.
* if pic.reference is set then the frame will be read later by lavc
- * encoding: unused
- * decoding: set by lavc, user can override
+ * width and height should be rounded up to the next multiple of 16
+ * - encoding: unused
+ * - decoding: set by lavc, user can override
*/
int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
* called to release buffers which where allocated with get_buffer.
* a released buffer can be reused in get_buffer()
* pic.data[*] must be set to NULL
- * encoding: unused
- * decoding: set by lavc, user can override
+ * - encoding: unused
+ * - decoding: set by lavc, user can override
*/
void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
/**
- * is 1 if the decoded stream contains b frames, 0 otherwise
- * encoding: unused
- * decoding: set by lavc
+ * is 1 if the decoded stream contains b frames, 0 otherwise.
+ * - encoding: unused
+ * - decoding: set by lavc
*/
int has_b_frames;
- int block_align; /* used by some WAV based audio codecs */
+ int block_align; ///< used by some WAV based audio codecs
- int parse_only; /* decoding only: if true, only parsing is done
+ int parse_only; /* - decoding only: if true, only parsing is done
(function avcodec_parse_frame()). The frame
data is returned. Only MPEG codecs support this now. */
/**
- * 0-> h263 quant 1-> mpeg quant
- * encoding: set by user.
- * decoding: unused
+ * 0-> h263 quant 1-> mpeg quant.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int mpeg_quant;
/**
- * pass1 encoding statistics output buffer
- * encoding: set by lavc
- * decoding: unused
+ * pass1 encoding statistics output buffer.
+ * - encoding: set by lavc
+ * - decoding: unused
*/
- char *stats_out; /* encoding statistics output buffer */
+ char *stats_out;
/**
* pass2 encoding statistics input buffer.
* concatenated stuff from stats_out of pass1 should be placed here
- * encoding: allocated/set/freed by user
- * decoding: unused
+ * - encoding: allocated/set/freed by user
+ * - decoding: unused
*/
char *stats_in;
/**
- * ratecontrol qmin qmax limiting method
+ * ratecontrol qmin qmax limiting method.
* 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
- * encoding: set by user.
- * decoding: unused
+ * - encoding: set by user.
+ * - decoding: unused
*/
float rc_qsquish;
int rc_qmod_freq;
/**
- * ratecontrol override, see RcOverride
- * encoding: allocated/set/freed by user.
- * decoding: unused
+ * ratecontrol override, see RcOverride.
+ * - encoding: allocated/set/freed by user.
+ * - decoding: unused
*/
RcOverride *rc_override;
int rc_override_count;
/**
- * rate control equation
- * encoding: set by user
- * decoding: unused
+ * rate control equation.
+ * - encoding: set by user
+ * - decoding: unused
*/
char *rc_eq;
/**
- * maximum bitrate
- * encoding: set by user.
- * decoding: unused
+ * maximum bitrate.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int rc_max_rate;
/**
- * minimum bitrate
- * encoding: set by user.
- * decoding: unused
+ * minimum bitrate.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int rc_min_rate;
/**
- * decoder bitstream buffer size
- * encoding: set by user.
- * decoding: unused
+ * decoder bitstream buffer size.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int rc_buffer_size;
float rc_buffer_aggressivity;
/**
- * qscale factor between p and i frames
- * encoding: set by user.
- * decoding: unused
+ * qscale factor between p and i frames.
+ * - encoding: set by user.
+ * - decoding: unused
*/
float i_quant_factor;
/**
- * qscale offset between p and i frames
+ * qscale offset between p and i frames.
* if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
* if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
- * encoding: set by user.
- * decoding: unused
+ * - encoding: set by user.
+ * - decoding: unused
*/
float i_quant_offset;
/**
- * initial complexity for pass1 ratecontrol
- * encoding: set by user.
- * decoding: unused
+ * initial complexity for pass1 ratecontrol.
+ * - encoding: set by user.
+ * - decoding: unused
*/
float rc_initial_cplx;
/**
- * dct algorithm, see FF_DCT_* below
- * encoding: set by user
- * decoding: unused
+ * dct algorithm, see FF_DCT_* below.
+ * - encoding: set by user
+ * - decoding: unused
*/
int dct_algo;
#define FF_DCT_AUTO 0
#define FF_DCT_ALTIVEC 5
/**
- * luminance masking (0-> disabled)
- * encoding: set by user
- * decoding: unused
+ * luminance masking (0-> disabled).
+ * - encoding: set by user
+ * - decoding: unused
*/
float lumi_masking;
/**
- * temporary complexity masking (0-> disabled)
- * encoding: set by user
- * decoding: unused
+ * temporary complexity masking (0-> disabled).
+ * - encoding: set by user
+ * - decoding: unused
*/
float temporal_cplx_masking;
/**
- * spatial complexity masking (0-> disabled)
- * encoding: set by user
- * decoding: unused
+ * spatial complexity masking (0-> disabled).
+ * - encoding: set by user
+ * - decoding: unused
*/
float spatial_cplx_masking;
/**
- * p block masking (0-> disabled)
- * encoding: set by user
- * decoding: unused
+ * p block masking (0-> disabled).
+ * - encoding: set by user
+ * - decoding: unused
*/
float p_masking;
/**
- * darkness masking (0-> disabled)
- * encoding: set by user
- * decoding: unused
+ * darkness masking (0-> disabled).
+ * - encoding: set by user
+ * - decoding: unused
*/
float dark_masking;
+
+ /* for binary compatibility */
+ int unused;
+
/**
- * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A')
- * this is used to workaround some encoder bugs
- * encoding: unused
- * decoding: set by user, will be converted to upper case by lavc during init
- */
- int fourcc;
-
- /**
- * idct algorithm, see FF_IDCT_* below
- * encoding: set by user
- * decoding: set by user
+ * idct algorithm, see FF_IDCT_* below.
+ * - encoding: set by user
+ * - decoding: set by user
*/
int idct_algo;
#define FF_IDCT_AUTO 0
#define FF_IDCT_MLIB 6
#define FF_IDCT_ARM 7
#define FF_IDCT_ALTIVEC 8
+#define FF_IDCT_SH4 9
+#define FF_IDCT_SIMPLEARM 10
/**
- * slice count
- * encoding: set by lavc
- * decoding: set by user (or 0)
+ * slice count.
+ * - encoding: set by lavc
+ * - decoding: set by user (or 0)
*/
int slice_count;
/**
- * slice offsets in the frame in bytes
- * encoding: set/allocated by lavc
- * decoding: set/allocated by user (or NULL)
+ * slice offsets in the frame in bytes.
+ * - encoding: set/allocated by lavc
+ * - decoding: set/allocated by user (or NULL)
*/
int *slice_offset;
/**
- * error concealment flags
- * encoding: unused
- * decoding: set by user
+ * error concealment flags.
+ * - encoding: unused
+ * - decoding: set by user
*/
int error_concealment;
#define FF_EC_GUESS_MVS 1
#define FF_EC_DEBLOCK 2
/**
- * dsp_mask could be used to disable unwanted
+ * dsp_mask could be add used to disable unwanted CPU features
* CPU features (i.e. MMX, SSE. ...)
- */
- unsigned dsp_mask;
-
- /**
- * bits per sample/pixel from the demuxer (needed for huffyuv)
- * encoding: set by lavc
- * decoding: set by user
+ *
+ * with FORCE flag you may instead enable given CPU features
+ * (Dangerous: usable in case of misdetection, improper usage however will
+ * result into program crash)
+ */
+ unsigned dsp_mask;
+#define FF_MM_FORCE 0x80000000 /* force usage of selected flags (OR) */
+ /* lower 16 bits - CPU features */
+#ifdef HAVE_MMX
+#define FF_MM_MMX 0x0001 /* standard MMX */
+#define FF_MM_3DNOW 0x0004 /* AMD 3DNOW */
+#define FF_MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
+#define FF_MM_SSE 0x0008 /* SSE functions */
+#define FF_MM_SSE2 0x0010 /* PIV SSE2 functions */
+#endif /* HAVE_MMX */
+
+ /**
+ * bits per sample/pixel from the demuxer (needed for huffyuv).
+ * - encoding: set by lavc
+ * - decoding: set by user
*/
int bits_per_sample;
/**
- * prediction method (needed for huffyuv)
- * encoding: set by user
- * decoding: unused
+ * prediction method (needed for huffyuv).
+ * - encoding: set by user
+ * - decoding: unused
*/
int prediction_method;
#define FF_PRED_LEFT 0
#define FF_PRED_MEDIAN 2
/**
- * aspect ratio. (0 if unknown)
- * encoding: set by user.
- * decoding: set by lavc.
+ * aspect ratio (0 if unknown).
+ * - encoding: set by user.
+ * - decoding: set by lavc.
*/
float aspect_ratio;
/**
- * the picture in the bitstream
- * encoding: set by lavc
- * decoding: set by lavc
+ * the picture in the bitstream.
+ * - encoding: set by lavc
+ * - decoding: set by lavc
*/
AVFrame *coded_frame;
/**
- * debug
- * encoding: set by user.
- * decoding: set by user.
+ * debug.
+ * - encoding: set by user.
+ * - decoding: set by user.
*/
int debug;
#define FF_DEBUG_PICT_INFO 1
#define FF_DEBUG_SKIP 0x00000080
#define FF_DEBUG_STARTCODE 0x00000100
#define FF_DEBUG_PTS 0x00000200
+#define FF_DEBUG_ER 0x00000400
+#define FF_DEBUG_MMCO 0x00000800
+#define FF_DEBUG_BUGS 0x00001000
/**
- * error
- * encoding: set by lavc if flags&CODEC_FLAG_PSNR
- * decoding: unused
+ * error.
+ * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
+ * - decoding: unused
*/
uint64_t error[4];
/**
- * minimum MB quantizer
- * encoding: set by user.
- * decoding: unused
+ * minimum MB quantizer.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int mb_qmin;
/**
- * maximum MB quantizer
- * encoding: set by user.
- * decoding: unused
+ * maximum MB quantizer.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int mb_qmax;
/**
- * motion estimation compare function
- * encoding: set by user.
- * decoding: unused
+ * motion estimation compare function.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int me_cmp;
/**
- * subpixel motion estimation compare function
- * encoding: set by user.
- * decoding: unused
+ * subpixel motion estimation compare function.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int me_sub_cmp;
/**
- * macroblock compare function (not supported yet)
- * encoding: set by user.
- * decoding: unused
+ * macroblock compare function (not supported yet).
+ * - encoding: set by user.
+ * - decoding: unused
*/
int mb_cmp;
#define FF_CMP_SAD 0
#define FF_CMP_CHROMA 256
/**
- * ME diamond size & shape
- * encoding: set by user.
- * decoding: unused
+ * ME diamond size & shape.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int dia_size;
/**
- * amount of previous MV predictors (2a+1 x 2a+1 square)
- * encoding: set by user.
- * decoding: unused
+ * amount of previous MV predictors (2a+1 x 2a+1 square).
+ * - encoding: set by user.
+ * - decoding: unused
*/
int last_predictor_count;
/**
- * pre pass for motion estimation
- * encoding: set by user.
- * decoding: unused
+ * pre pass for motion estimation.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int pre_me;
/**
- * motion estimation pre pass compare function
- * encoding: set by user.
- * decoding: unused
+ * motion estimation pre pass compare function.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int me_pre_cmp;
/**
- * ME pre pass diamond size & shape
- * encoding: set by user.
- * decoding: unused
+ * ME pre pass diamond size & shape.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int pre_dia_size;
/**
- * subpel ME quality
- * encoding: set by user.
- * decoding: unused
+ * subpel ME quality.
+ * - encoding: set by user.
+ * - decoding: unused
*/
int me_subpel_quality;
/**
- * callback to negotiate the pixelFormat
+ * callback to negotiate the pixelFormat.
* @param fmt is the list of formats which are supported by the codec,
* its terminated by -1 as 0 is a valid format, the formats are ordered by quality
* the first is allways the native one
* @return the choosen format
- * encoding: unused
- * decoding: set by user, if not set then the native format will always be choosen
+ * - encoding: unused
+ * - decoding: set by user, if not set then the native format will always be choosen
*/
enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
* information only used in DVB MPEG2 transport streams). 0 if
* not set.
*
- * encoding: unused.
- * decoding: set by decoder
+ * - encoding: unused.
+ * - decoding: set by decoder
*/
int dtg_active_format;
#define FF_DTG_AFD_SAME 8
#define FF_DTG_AFD_16_9_SP_14_9 14
#define FF_DTG_AFD_SP_4_3 15
- int me_range;
/**
* Maximum motion estimation search range in subpel units.
* if 0 then no limit
*
- * encoding: set by user.
- * decoding: unused.
+ * - encoding: set by user.
+ * - decoding: unused.
+ */
+ int me_range;
+
+ /**
+ * frame_rate_base.
+ * for variable fps this is 1
+ * - encoding: set by user.
+ * - decoding: set by lavc.
+ * @todo move this after frame_rate
+ */
+
+ int frame_rate_base;
+ /**
+ * intra quantizer bias.
+ * - encoding: set by user.
+ * - decoding: unused
+ */
+ int intra_quant_bias;
+#define FF_DEFAULT_QUANT_BIAS 999999
+
+ /**
+ * inter quantizer bias.
+ * - encoding: set by user.
+ * - decoding: unused
+ */
+ int inter_quant_bias;
+
+ /**
+ * color table ID.
+ * - encoding: unused.
+ * - decoding: which clrtable should be used for 8bit RGB images
+ * table have to be stored somewhere FIXME
+ */
+ int color_table_id;
+
+ /**
+ * internal_buffer count.
+ * Dont touch, used by lavc default_get_buffer()
+ */
+ int internal_buffer_count;
+
+ /**
+ * internal_buffers.
+ * Dont touch, used by lavc default_get_buffer()
+ */
+ void *internal_buffer;
+
+#define FF_QUALITY_SCALE 256
+ /**
+ * global quality for codecs which cannot change it per frame.
+ * this should be proportional to MPEG1/2/4 qscale.
+ * - encoding: set by user.
+ * - decoding: unused
+ */
+ int global_quality;
+
+#define FF_CODER_TYPE_VLC 0
+#define FF_CODER_TYPE_AC 1
+ /**
+ * coder type
+ * - encoding: set by user.
+ * - decoding: unused
+ */
+ int coder_type;
+
+ /**
+ * context model
+ * - encoding: set by user.
+ * - decoding: unused
+ */
+ int context_model;
+
+ /**
+ * slice flags
+ * - encoding: unused
+ * - decoding: set by user.
*/
+ int slice_flags;
+#define SLICE_FLAG_CODED_ORDER 0x0001 ///< draw_horiz_band() is called in coded order instead of display
+#define SLICE_FLAG_ALLOW_FIELD 0x0002 ///< allow draw_horiz_band() with field slices (MPEG2 field pics)
+#define SLICE_FLAG_ALLOW_PLANE 0x0004 ///< allow draw_horiz_band() with 1 component at a time (SVQ1)
+ /**
+ * XVideo Motion Acceleration
+ * - encoding: forbidden
+ * - decoding: set by decoder
+ */
+ int xvmc_acceleration;
+
+ /**
+ * macroblock decision mode
+ * - encoding: set by user.
+ * - decoding: unused
+ */
+ int mb_decision;
+#define FF_MB_DECISION_SIMPLE 0 ///< uses mb_cmp
+#define FF_MB_DECISION_BITS 1 ///< chooses the one which needs the fewest bits
+#define FF_MB_DECISION_RD 2 ///< rate distoration
+
+ /**
+ * custom intra quantization matrix
+ * - encoding: set by user, can be NULL
+ * - decoding: set by lavc
+ */
+ uint16_t *intra_matrix;
+
+ /**
+ * custom inter quantization matrix
+ * - encoding: set by user, can be NULL
+ * - decoding: set by lavc
+ */
+ uint16_t *inter_matrix;
+
+ /**
+ * fourcc from the AVI stream header (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
+ * this is used to workaround some encoder bugs
+ * - encoding: unused
+ * - decoding: set by user, will be converted to upper case by lavc during init
+ */
+ unsigned int stream_codec_tag;
+
+ /**
+ * scene change detection threshold.
+ * 0 is default, larger means fewer detected scene changes
+ * - encoding: set by user.
+ * - decoding: unused
+ */
+ int scenechange_threshold;
} AVCodecContext;
-//void avcodec_getopt(AVCodecContext* avctx, const char* str, avc_config_t** config);
+/**
+ * AVOption.
+ */
typedef struct AVOption {
/** options' name */
const char *name; /* if name is NULL, it indicates a link to next */
- /** short English text help */
- const char *help;
+ /** short English text help or const struct AVOption* subpointer */
+ const char *help; // const struct AVOption* sub;
/** offset to context structure where the parsed value should be stored */
int offset;
/** options' type */
int type;
-#define FF_OPT_TYPE_BOOL 1 // boolean - true,1,on (or simply presence)
-#define FF_OPT_TYPE_DOUBLE 2 // double
-#define FF_OPT_TYPE_INT 3 // integer
-#define FF_OPT_TYPE_STRING 4 // string (finished with \0)
-#define FF_OPT_TYPE_MASK 0x1f // mask for types - upper bits are various flags
+#define FF_OPT_TYPE_BOOL 1 ///< boolean - true,1,on (or simply presence)
+#define FF_OPT_TYPE_DOUBLE 2 ///< double
+#define FF_OPT_TYPE_INT 3 ///< integer
+#define FF_OPT_TYPE_STRING 4 ///< string (finished with \0)
+#define FF_OPT_TYPE_MASK 0x1f ///< mask for types - upper bits are various flags
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
* defval might select other then first argument as default
*/
const char *defstr;
- const struct AVOption *sub; /* used when name is NULL */
- /* when it's NULL return to previous level (or finish reading) */
#define FF_OPT_MAX_DEPTH 10
} AVOption;
+/**
+ * Parse option(s) and sets fields in passed structure
+ * @param strct structure where the parsed results will be written
+ * @param list list with AVOptions
+ * @param opts string with options for parsing
+ */
+int avoption_parse(void* strct, const AVOption* list, const char* opts);
+
+
+/**
+ * AVCodec.
+ */
typedef struct AVCodec {
const char *name;
- int type;
+ enum CodecType type;
int id;
int priv_data_size;
int (*init)(AVCodecContext *);
int capabilities;
const AVOption *options;
struct AVCodec *next;
+ void (*flush)(AVCodecContext *);
} AVCodec;
/**
*/
typedef struct AVPicture {
uint8_t *data[4];
- int linesize[4];
+ int linesize[4]; ///< number of bytes per line
} AVPicture;
+/**
+ * AVPaletteControl
+ * This structure defines a method for communicating palette changes
+ * between and demuxer and a decoder.
+ */
+typedef struct AVPaletteControl {
+
+ /* demuxer sets this to 1 to indicate the palette has changed;
+ * decoder resets to 0 */
+ int palette_changed;
+
+ /* 256 3-byte RGB palette entries; the components should be
+ * formatted in the buffer as "RGBRGB..." and should be scaled to
+ * 8 bits if they originally represented 6-bit VGA palette
+ * components */
+ unsigned char palette[256 * 3];
+
+} AVPaletteControl;
+
extern AVCodec ac3_encoder;
extern AVCodec mp2_encoder;
extern AVCodec mp3lame_encoder;
extern AVCodec oggvorbis_encoder;
extern AVCodec mpeg1video_encoder;
+extern AVCodec mpeg2video_encoder;
extern AVCodec h263_encoder;
extern AVCodec h263p_encoder;
+extern AVCodec flv_encoder;
extern AVCodec rv10_encoder;
extern AVCodec mjpeg_encoder;
+extern AVCodec ljpeg_encoder;
extern AVCodec mpeg4_encoder;
extern AVCodec msmpeg4v1_encoder;
extern AVCodec msmpeg4v2_encoder;
extern AVCodec wmv1_encoder;
extern AVCodec wmv2_encoder;
extern AVCodec huffyuv_encoder;
+extern AVCodec h264_encoder;
+extern AVCodec asv1_encoder;
+extern AVCodec asv2_encoder;
+extern AVCodec vcr1_encoder;
+extern AVCodec ffv1_encoder;
+extern AVCodec mdec_encoder;
extern AVCodec h263_decoder;
extern AVCodec mpeg4_decoder;
extern AVCodec msmpeg4v3_decoder;
extern AVCodec wmv1_decoder;
extern AVCodec wmv2_decoder;
-extern AVCodec mpeg_decoder;
+extern AVCodec mpeg1video_decoder;
+extern AVCodec mpeg2video_decoder;
+extern AVCodec mpeg_xvmc_decoder;
extern AVCodec h263i_decoder;
+extern AVCodec flv_decoder;
extern AVCodec rv10_decoder;
extern AVCodec svq1_decoder;
+extern AVCodec svq3_decoder;
extern AVCodec dvvideo_decoder;
-extern AVCodec dvaudio_decoder;
extern AVCodec wmav1_decoder;
extern AVCodec wmav2_decoder;
extern AVCodec mjpeg_decoder;
extern AVCodec huffyuv_decoder;
extern AVCodec oggvorbis_decoder;
extern AVCodec cyuv_decoder;
+extern AVCodec h264_decoder;
+extern AVCodec indeo3_decoder;
+extern AVCodec vp3_decoder;
+extern AVCodec amr_nb_decoder;
+extern AVCodec amr_nb_encoder;
+extern AVCodec amr_wb_encoder;
+extern AVCodec amr_wb_decoder;
+extern AVCodec aac_decoder;
+extern AVCodec mpeg4aac_decoder;
+extern AVCodec asv1_decoder;
+extern AVCodec asv2_decoder;
+extern AVCodec vcr1_decoder;
+extern AVCodec cljr_decoder;
+extern AVCodec ffv1_decoder;
+extern AVCodec fourxm_decoder;
+extern AVCodec mdec_decoder;
+extern AVCodec roq_decoder;
+extern AVCodec interplay_video_decoder;
+extern AVCodec xan_wc3_decoder;
+extern AVCodec ra_144_decoder;
+extern AVCodec ra_288_decoder;
+extern AVCodec roq_dpcm_decoder;
+extern AVCodec interplay_dpcm_decoder;
+extern AVCodec xan_dpcm_decoder;
/* pcm codecs */
#define PCM_CODEC(id, name) \
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
+PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
+PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
+PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
#undef PCM_CODEC
/* dummy raw video codec */
-extern AVCodec rawvideo_codec;
+extern AVCodec rawvideo_encoder;
+extern AVCodec rawvideo_decoder;
/* the following codecs use external GPL libs */
extern AVCodec ac3_decoder;
int leftBand, int rightBand);
void img_resample(ImgReSampleContext *s,
- AVPicture *output, AVPicture *input);
+ AVPicture *output, const AVPicture *input);
void img_resample_close(ImgReSampleContext *s);
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
int pix_fmt, int width, int height);
+int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
+ unsigned char *dest, int dest_size);
int avpicture_get_size(int pix_fmt, int width, int height);
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
const char *avcodec_get_pix_fmt_name(int pix_fmt);
+enum PixelFormat avcodec_get_pix_fmt(const char* name);
+
+#define FF_LOSS_RESOLUTION 0x0001 /* loss due to resolution change */
+#define FF_LOSS_DEPTH 0x0002 /* loss due to color depth change */
+#define FF_LOSS_COLORSPACE 0x0004 /* loss due to color space conversion */
+#define FF_LOSS_ALPHA 0x0008 /* loss of alpha bits */
+#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
+#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
+
+int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
+ int has_alpha);
+int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
+ int has_alpha, int *loss_ptr);
+
+#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
+#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
+int img_get_alpha_info(const AVPicture *src,
+ int pix_fmt, int width, int height);
/* convert among pixel formats */
int img_convert(AVPicture *dst, int dst_pix_fmt,
- AVPicture *src, int pix_fmt,
+ const AVPicture *src, int pix_fmt,
int width, int height);
/* deinterlace a picture */
-int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
+int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
int pix_fmt, int width, int height);
/* external high level API */
unsigned avcodec_build(void);
void avcodec_init(void);
-void avcodec_set_bit_exact(void);
-
void register_avcodec(AVCodec *format);
AVCodec *avcodec_find_encoder(enum CodecID id);
AVCodec *avcodec_find_encoder_by_name(const char *name);
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
+void avcodec_default_free_buffers(AVCodecContext *s);
+/**
+ * opens / inits the AVCodecContext.
+ * not thread save!
+ */
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
+
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
int *frame_size_ptr,
uint8_t *buf, int buf_size);
void avcodec_flush_buffers(AVCodecContext *avctx);
+/* misc usefull functions */
+
+/**
+ * returns a single letter to describe the picture type
+ */
+char av_get_pict_type_char(int pict_type);
+
+/**
+ * reduce a fraction.
+ * this is usefull for framerate calculations
+ * @param max the maximum allowed for dst_nom & dst_den
+ * @return 1 if exact, 0 otherwise
+ */
+int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max);
+
+/**
+ * rescale a 64bit integer.
+ * a simple a*b/c isnt possible as it can overflow
+ */
+int64_t av_rescale(int64_t a, int b, int c);
/**
*/
typedef struct {
- // compressed size used from given memory buffer
+ /// compressed size used from given memory buffer
int size;
/// I/P/B frame type
int frame_type;
projects / ffmpeg / blobdiff