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#ifndef AVCODEC_H
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#define AVCODEC_H
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/**
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 * @file avcodec.h
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 * external api header.
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 */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "common.h"
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#define LIBAVCODEC_VERSION_INT 0x000406
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#define LIBAVCODEC_VERSION     "0.4.6"
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#define LIBAVCODEC_BUILD       4660
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#define LIBAVCODEC_BUILD_STR   "4660"
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enum CodecID {
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    CODEC_ID_NONE, 
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    CODEC_ID_MPEG1VIDEO,
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    CODEC_ID_H263,
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    CODEC_ID_RV10,
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    CODEC_ID_MP2,
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    CODEC_ID_MP3LAME,
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    CODEC_ID_VORBIS,
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    CODEC_ID_AC3,
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    CODEC_ID_MJPEG,
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    CODEC_ID_MJPEGB,
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    CODEC_ID_MPEG4,
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    CODEC_ID_RAWVIDEO,
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    CODEC_ID_MSMPEG4V1,
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    CODEC_ID_MSMPEG4V2,
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    CODEC_ID_MSMPEG4V3,
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    CODEC_ID_WMV1,
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    CODEC_ID_WMV2,
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    CODEC_ID_H263P,
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    CODEC_ID_H263I,
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    CODEC_ID_SVQ1,
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    CODEC_ID_DVVIDEO,
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    CODEC_ID_DVAUDIO,
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    CODEC_ID_WMAV1,
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    CODEC_ID_WMAV2,
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    CODEC_ID_MACE3,
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    CODEC_ID_MACE6,
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    CODEC_ID_HUFFYUV,
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    CODEC_ID_CYUV,
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    /* various pcm "codecs" */
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    CODEC_ID_PCM_S16LE,
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    CODEC_ID_PCM_S16BE,
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    CODEC_ID_PCM_U16LE,
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    CODEC_ID_PCM_U16BE,
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    CODEC_ID_PCM_S8,
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    CODEC_ID_PCM_U8,
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    CODEC_ID_PCM_MULAW,
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    CODEC_ID_PCM_ALAW,
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    /* various adpcm codecs */
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    CODEC_ID_ADPCM_IMA_QT,
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    CODEC_ID_ADPCM_IMA_WAV,
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    CODEC_ID_ADPCM_MS,
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};
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enum CodecType {
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    CODEC_TYPE_UNKNOWN = -1,
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    CODEC_TYPE_VIDEO,
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    CODEC_TYPE_AUDIO,
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};
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/**
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 * Pixel format.
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 */
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enum PixelFormat {
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    PIX_FMT_YUV420P,
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    PIX_FMT_YUV422,
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    PIX_FMT_RGB24,     ///< 3 bytes, R is first 
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    PIX_FMT_BGR24,     ///< 3 bytes, B is first 
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    PIX_FMT_YUV422P,
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    PIX_FMT_YUV444P,
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    PIX_FMT_RGBA32,    ///< always stored in cpu endianness 
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    PIX_FMT_YUV410P,
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    PIX_FMT_YUV411P,
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    PIX_FMT_RGB565,    ///< always stored in cpu endianness 
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    PIX_FMT_RGB555,    ///< always stored in cpu endianness, most significant bit to 1 
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    PIX_FMT_GRAY8,
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    PIX_FMT_MONOWHITE, ///< 0 is white 
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    PIX_FMT_MONOBLACK, ///< 0 is black 
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    PIX_FMT_PAL8,      ///< 8 bit with RGBA palette 
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    PIX_FMT_NB,
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};
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/* currently unused, may be used if 24/32 bits samples ever supported */
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enum SampleFormat {
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    SAMPLE_FMT_S16 = 0,         ///< signed 16 bits 
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};
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100
/* in bytes */
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#define AVCODEC_MAX_AUDIO_FRAME_SIZE 131072
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/**
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 * Required number of zero bytes at the end of the input bitstream for decoding.
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 * to avoid overreading (and possibly segfaulting)
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 */
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#define FF_INPUT_BUFFER_PADDING_SIZE 8
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/* motion estimation type, EPZS by default */
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enum Motion_Est_ID {
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    ME_ZERO = 1,
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    ME_FULL,
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    ME_LOG,
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    ME_PHODS,
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    ME_EPZS,
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    ME_X1
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};
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119
typedef struct RcOverride{
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    int start_frame;
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    int end_frame;
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    int qscale; // if this is 0 then quality_factor will be used instead
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    float quality_factor;
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} RcOverride;
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/* only for ME compatiblity with old apps */
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extern int motion_estimation_method;
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/* ME algos sorted by quality */
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static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG, 
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                                       ME_X1, ME_EPZS, ME_FULL };
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133

    
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#define FF_MAX_B_FRAMES 8
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136
/* encoding support
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   these flags can be passed in AVCodecContext.flags before initing 
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   Note: note not everything is supported yet 
139
*/
140

    
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#define CODEC_FLAG_HQ     0x0001  ///< brute force MB-type decission mode (slow) 
142
#define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale 
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#define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed 
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#define CODEC_FLAG_QPEL   0x0010  ///< use qpel MC 
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#define CODEC_FLAG_GMC    0x0020  ///< use GMC 
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#define CODEC_FLAG_PART   0x0080  ///< use data partitioning 
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/* parent program gurantees that the input for b-frame containing streams is not written to 
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   for at least s->max_b_frames+1 frames, if this is not set than the input will be copied */
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#define CODEC_FLAG_INPUT_PRESERVED 0x0100
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#define CODEC_FLAG_PASS1 0x0200   ///< use internal 2pass ratecontrol in first  pass mode 
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#define CODEC_FLAG_PASS2 0x0400   ///< use internal 2pass ratecontrol in second pass mode 
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#define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< use external huffman table (for mjpeg) 
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#define CODEC_FLAG_GRAY  0x2000   ///< only decode/encode grayscale 
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#define CODEC_FLAG_EMU_EDGE 0x4000///< dont draw edges 
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#define CODEC_FLAG_PSNR           0x8000 ///< error[?] variables will be set during encoding 
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#define CODEC_FLAG_TRUNCATED  0x00010000 /** input bitstream might be truncated at a random location instead 
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                                            of only at frame boundaries */
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#define CODEC_FLAG_NORMALIZE_AQP  0x00020000 ///< normalize adaptive quantization 
159
#define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< use interlaced dct 
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#define CODEC_FLAG_LOW_DELAY      0x00080000 ///< force low delay / will fail on b frames 
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#define CODEC_FLAG_ALT_SCAN       0x00100000 ///< use alternate scan 
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#define CODEC_FLAG_TRELLIS_QUANT  0x00200000 ///< use trellis quantization 
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#define CODEC_FLAG_GLOBAL_HEADER  0x00400000 ///< place global headers in extradata instead of every keyframe 
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#define CODEC_FLAG_BITEXACT       0x00800000 ///< use only bitexact stuff (except (i)dct) 
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/* Fx : Flag for h263+ extra options */
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#define CODEC_FLAG_H263P_AIC      0x01000000 ///< Advanced intra coding 
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#define CODEC_FLAG_H263P_UMV      0x02000000 ///< Unlimited motion vector  
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/* For advanced prediction mode, we reuse the 4MV flag */
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/* Unsupported options :
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 *                 Syntax Arithmetic coding (SAC)
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 *                 Deblocking filter internal loop
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 *                 Slice structured
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 *                 Reference Picture Selection
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 *                 Independant Segment Decoding
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 *                 Alternative Inter *                 VLC
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 *                 Modified Quantization */
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/* /Fx */
178
/* codec capabilities */
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#define CODEC_CAP_DRAW_HORIZ_BAND 0x0001 ///< decoder can use draw_horiz_band callback 
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#define CODEC_CAP_DR1             0x0002 ///< direct rendering method 1 
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/* if 'parse_only' field is true, then avcodec_parse_frame() can be
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   used */
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#define CODEC_CAP_PARSE_ONLY      0x0004
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#define CODEC_CAP_TRUNCATED       0x0008
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187
#define FRAME_RATE_BASE 10010
188

    
189
#define FF_COMMON_FRAME \
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    uint8_t *data[4];\
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    int linesize[4];\
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    /**\
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     * pointer to the first allocated byte of the picture. can be used in get_buffer/release_buffer\
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     * this isnt used by lavc unless the default get/release_buffer() is used\
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     * - encoding: \
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     * - decoding: \
197
     */\
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    uint8_t *base[4];\
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    /**\
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     * 1 -> keyframe, 0-> not\
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     * - encoding: set by lavc\
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     * - decoding: set by lavc\
203
     */\
204
    int key_frame;\
205
\
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    /**\
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     * picture type of the frame, see ?_TYPE below\
208
     * - encoding: set by lavc for coded_picture (and set by user for input)\
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     * - decoding: set by lavc\
210
     */\
211
    int pict_type;\
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\
213
    /**\
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     * presentation timestamp in micro seconds (time when frame should be shown to user)\
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     * if 0 then the frame_rate will be used as reference\
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     * - encoding: MUST be set by user\
217
     * - decoding: set by lavc\
218
     */\
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    long long int pts;\
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\
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    /**\
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     * picture number in bitstream order.\
223
     * - encoding: set by\
224
     * - decoding: set by lavc\
225
     */\
226
    int coded_picture_number;\
227
    /**\
228
     * picture number in display order.\
229
     * - encoding: set by\
230
     * - decoding: set by lavc\
231
     */\
232
    int display_picture_number;\
233
\
234
    /**\
235
     * quality (between 1 (good) and 31 (bad)) \
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     * - encoding: set by lavc for coded_picture (and set by user for input)\
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     * - decoding: set by lavc\
238
     */\
239
    float quality; \
240
\
241
    /**\
242
     * buffer age (1->was last buffer and dint change, 2->..., ...).\
243
     * set to something large if the buffer has not been used yet \
244
     * - encoding: unused\
245
     * - decoding: MUST be set by get_buffer()\
246
     */\
247
    int age;\
248
\
249
    /**\
250
     * is this picture used as reference\
251
     * - encoding: unused\
252
     * - decoding: set by lavc (before get_buffer() call))\
253
     */\
254
    int reference;\
255
\
256
    /**\
257
     * QP table\
258
     * - encoding: unused\
259
     * - decoding: set by lavc\
260
     */\
261
    int8_t *qscale_table;\
262
    /**\
263
     * QP store stride\
264
     * - encoding: unused\
265
     * - decoding: set by lavc\
266
     */\
267
    int qstride;\
268
\
269
    /**\
270
     * mbskip_table[mb]>=1 if MB didnt change\
271
     * stride= mb_width = (width+15)>>4\
272
     * - encoding: unused\
273
     * - decoding: set by lavc\
274
     */\
275
    uint8_t *mbskip_table;\
276
\
277
    /**\
278
     * for some private data of the user\
279
     * - encoding: unused\
280
     * - decoding: set by user\
281
     */\
282
    void *opaque;\
283
\
284
    /**\
285
     * error\
286
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR\
287
     * - decoding: unused\
288
     */\
289
    uint64_t error[4];\
290
\
291
    /**\
292
     * type of the buffer (to keep track of who has to dealloc data[*])\
293
     * - encoding: set by the one who allocs it\
294
     * - decoding: set by the one who allocs it\
295
     * Note: user allocated (direct rendering) & internal buffers can not coexist currently\ 
296
     */\
297
    int type;\
298
    \
299
    /**\
300
     * when decoding, this signal how much the picture must be delayed.\
301
     * extra_delay = repeat_pict / (2*fps)\
302
     * - encoding: unused\
303
     * - decoding: set by lavc\
304
     */\
305
    int repeat_pict;
306

    
307

    
308
#define FF_BUFFER_TYPE_INTERNAL 1
309
#define FF_BUFFER_TYPE_USER     2 // Direct rendering buffers
310
#define FF_BUFFER_TYPE_SHARED   4 // input frame for encoding(wont be dealloced)
311

    
312

    
313
#define FF_I_TYPE 1 // Intra
314
#define FF_P_TYPE 2 // Predicted
315
#define FF_B_TYPE 3 // Bi-dir predicted
316
#define FF_S_TYPE 4 // S(GMC)-VOP MPEG4
317

    
318
typedef struct AVFrame {
319
    FF_COMMON_FRAME
320
} AVFrame;
321

    
322

    
323
/**
324
 * main external api structure.
325
 */
326
typedef struct AVCodecContext {
327
    /**
328
     * the average bitrate.
329
     * - encoding: set by user. unused for constant quantizer encoding
330
     * - decoding: set by lavc. 0 or some bitrate if this info is available in the stream 
331
     */
332
    int bit_rate;
333

    
334
    /**
335
     * number of bits the bitstream is allowed to diverge from the reference.
336
     *           the reference can be CBR (for CBR pass1) or VBR (for pass2)
337
     * - encoding: set by user. unused for constant quantizer encoding
338
     * - decoding: unused
339
     */
340
    int bit_rate_tolerance; 
341

    
342
    /**
343
     * CODEC_FLAG_*.
344
     * - encoding: set by user.
345
     * - decoding: set by user.
346
     */
347
    int flags;
348

    
349
    /**
350
     * some codecs needs additionnal format info. It is stored here
351
     * - encoding: set by user. 
352
     * - decoding: set by lavc. (FIXME is this ok?)
353
     */
354
    int sub_id;
355

    
356
    /**
357
     * motion estimation algorithm used for video coding.
358
     * - encoding: MUST be set by user.
359
     * - decoding: unused
360
     */
361
    int me_method;
362

    
363
    /**
364
     * some codecs need / can use extra-data like huffman tables.
365
     * mjpeg: huffman tables
366
     * rv10: additional flags
367
     * mpeg4: global headers (they can be in the bitstream or here)
368
     * - encoding: set/allocated/freed by lavc.
369
     * - decoding: set/allocated/freed by user.
370
     */
371
    void *extradata;
372
    int extradata_size;
373
    
374
    /* video only */
375
    /**
376
     * frames per sec multiplied by FRAME_RATE_BASE.
377
     * for variable fps this is the precission, so if the timestamps 
378
     * can be specified in msec precssion then this is 1000*FRAME_RATE_BASE
379
     * - encoding: MUST be set by user
380
     * - decoding: set by lavc. 0 or the frame_rate if available
381
     */
382
    int frame_rate;
383

    
384
    /**
385
     * width / height.
386
     * - encoding: MUST be set by user. 
387
     * - decoding: set by user, some codecs might override / change it during playback
388
     */
389
    int width, height;
390
    
391
#define FF_ASPECT_SQUARE 1
392
#define FF_ASPECT_4_3_625 2
393
#define FF_ASPECT_4_3_525 3
394
#define FF_ASPECT_16_9_625 4
395
#define FF_ASPECT_16_9_525 5
396
#define FF_ASPECT_EXTENDED 15
397

    
398
    /**
399
     * the number of pictures in a group of pitures, or 0 for intra_only.
400
     * - encoding: set by user.
401
     * - decoding: unused
402
     */
403
    int gop_size;
404

    
405
    /**
406
     * pixel format, see PIX_FMT_xxx.
407
     * - encoding: unused
408
     * - decoding: set by lavc.
409
     */
410
    enum PixelFormat pix_fmt;
411
        
412
    /**
413
     * if non NULL, 'draw_horiz_band' is called by the libavcodec
414
     * decoder to draw an horizontal band. It improve cache usage. Not
415
     * all codecs can do that. You must check the codec capabilities
416
     * before
417
     * - encoding: unused
418
     * - decoding: set by user.
419
     */
420
    void (*draw_horiz_band)(struct AVCodecContext *s,
421
                            uint8_t **src_ptr, int linesize,
422
                            int y, int width, int height);
423

    
424
    /* audio only */
425
    int sample_rate; ///< samples per sec 
426
    int channels;
427
    int sample_fmt;  ///< sample format, currenly unused 
428

    
429
    /* the following data should not be initialized */
430
    int frame_size;     ///< in samples, initialized when calling 'init' 
431
    int frame_number;   ///< audio or video frame number 
432
    int real_pict_num;  ///< returns the real picture number of previous encoded frame 
433
    
434
    /**
435
     * number of frames the decoded output will be delayed relative to 
436
     * the encoded input.
437
     * - encoding: set by lavc.
438
     * - decoding: unused
439
     */
440
    int delay;
441
    
442
    /* - encoding parameters */
443
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0)
444
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
445
    
446
    /**
447
     * minimum quantizer.
448
     * - encoding: set by user.
449
     * - decoding: unused
450
     */
451
    int qmin;
452

    
453
    /**
454
     * maximum quantizer.
455
     * - encoding: set by user.
456
     * - decoding: unused
457
     */
458
    int qmax;
459

    
460
    /**
461
     * maximum quantizer difference etween frames.
462
     * - encoding: set by user.
463
     * - decoding: unused
464
     */
465
    int max_qdiff;
466

    
467
    /**
468
     * maximum number of b frames between non b frames.
469
     * note: the output will be delayed by max_b_frames+1 relative to the input
470
     * - encoding: set by user.
471
     * - decoding: unused
472
     */
473
    int max_b_frames;
474

    
475
    /**
476
     * qscale factor between ip and b frames.
477
     * - encoding: set by user.
478
     * - decoding: unused
479
     */
480
    float b_quant_factor;
481
    
482
    /** obsolete FIXME remove */
483
    int rc_strategy;
484
    int b_frame_strategy;
485

    
486
    /**
487
     * hurry up amount.
488
     * - encoding: unused
489
     * - decoding: set by user. 1-> skip b frames, 2-> skip idct/dequant too, 5-> skip everything except header
490
     */
491
    int hurry_up;
492
    
493
    struct AVCodec *codec;
494
    
495
    void *priv_data;
496

    
497
    /* The following data is for RTP friendly coding */
498
    /* By now only H.263/H.263+/MPEG4 coder honours this   */
499
    int rtp_mode;   /* 1 for activate RTP friendly-mode           */
500
                    /* highers numbers represent more error-prone */
501
                    /* enviroments, by now just "1" exist         */
502
    
503
    int rtp_payload_size;   /* The size of the RTP payload, the coder will  */
504
                            /* do it's best to deliver a chunk with size    */
505
                            /* below rtp_payload_size, the chunk will start */
506
                            /* with a start code on some codecs like H.263  */
507
                            /* This doesn't take account of any particular  */
508
                            /* headers inside the transmited RTP payload    */
509

    
510
    
511
    /* The RTP callcack: This function is called  */
512
    /* every time the encoder as a packet to send */
513
    /* Depends on the encoder if the data starts  */
514
    /* with a Start Code (it should) H.263 does   */
515
    void (*rtp_callback)(void *data, int size, int packet_number); 
516

    
517
    /* statistics, used for 2-pass encoding */
518
    int mv_bits;
519
    int header_bits;
520
    int i_tex_bits;
521
    int p_tex_bits;
522
    int i_count;
523
    int p_count;
524
    int skip_count;
525
    int misc_bits;
526
    
527
    /**
528
     * number of bits used for the previously encoded frame.
529
     * - encoding: set by lavc
530
     * - decoding: - for audio - bits_per_sample
531
     */
532
    int frame_bits;
533
                 
534
    /**
535
     * private data of the user, can be used to carry app specific stuff.
536
     * - encoding: set by user
537
     * - decoding: set by user
538
     */
539
    void *opaque;
540

    
541
    char codec_name[32];
542
    enum CodecType codec_type; /* see CODEC_TYPE_xxx */
543
    enum CodecID codec_id; /* see CODEC_ID_xxx */
544
    unsigned int codec_tag;  ///< codec tag, only used if unknown codec
545
    
546
    /**
547
     * workaround bugs in encoders which sometimes cannot be detected automatically.
548
     * - encoding: unused
549
     * - decoding: set by user
550
     */
551
    int workaround_bugs;
552
#define FF_BUG_AUTODETECT       1  ///< autodetection
553
#define FF_BUG_OLD_MSMPEG4      2
554
#define FF_BUG_XVID_ILACE       4
555
#define FF_BUG_UMP4             8
556
#define FF_BUG_NO_PADDING       16
557
#define FF_BUG_AC_VLC           32
558
#define FF_BUG_QPEL_CHROMA      64
559
#define FF_BUG_STD_QPEL         128
560
#define FF_BUG_QPEL_CHROMA2     256
561
#define FF_BUG_DIRECT_BLOCKSIZE 512
562
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
563
        
564
    /**
565
     * luma single coeff elimination threshold.
566
     * - encoding: set by user
567
     * - decoding: unused
568
     */
569
    int luma_elim_threshold;
570
    
571
    /**
572
     * chroma single coeff elimination threshold.
573
     * - encoding: set by user
574
     * - decoding: unused
575
     */
576
    int chroma_elim_threshold;
577
    
578
    /**
579
     * strictly follow the std (MPEG4, ...).
580
     * - encoding: set by user
581
     * - decoding: unused
582
     */
583
    int strict_std_compliance;
584
    
585
    /**
586
     * qscale offset between ip and b frames.
587
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
588
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
589
     * - encoding: set by user.
590
     * - decoding: unused
591
     */
592
    float b_quant_offset;
593
    
594
    /**
595
     * error resilience higher values will detect more errors but may missdetect
596
     * some more or less valid parts as errors.
597
     * - encoding: unused
598
     * - decoding: set by user
599
     */
600
    int error_resilience;
601
#define FF_ER_CAREFULL        1
602
#define FF_ER_COMPLIANT       2
603
#define FF_ER_AGGRESSIVE      3
604
#define FF_ER_VERY_AGGRESSIVE 4
605
    
606
    /**
607
     * called at the beginning of each frame to get a buffer for it.
608
     * if pic.reference is set then the frame will be read later by lavc
609
     * - encoding: unused
610
     * - decoding: set by lavc, user can override
611
     */
612
    int (*get_buffer)(struct AVCodecContext *c, AVFrame *pic);
613
    
614
    /**
615
     * called to release buffers which where allocated with get_buffer.
616
     * a released buffer can be reused in get_buffer()
617
     * pic.data[*] must be set to NULL
618
     * - encoding: unused
619
     * - decoding: set by lavc, user can override
620
     */
621
    void (*release_buffer)(struct AVCodecContext *c, AVFrame *pic);
622

    
623
    /**
624
     * is 1 if the decoded stream contains b frames, 0 otherwise.
625
     * - encoding: unused
626
     * - decoding: set by lavc
627
     */
628
    int has_b_frames;
629
    
630
    int block_align; ///< used by some WAV based audio codecs
631
    
632
    int parse_only; /* - decoding only: if true, only parsing is done
633
                       (function avcodec_parse_frame()). The frame
634
                       data is returned. Only MPEG codecs support this now. */
635
    
636
    /**
637
     * 0-> h263 quant 1-> mpeg quant.
638
     * - encoding: set by user.
639
     * - decoding: unused
640
     */
641
    int mpeg_quant;
642
    
643
    /**
644
     * pass1 encoding statistics output buffer.
645
     * - encoding: set by lavc
646
     * - decoding: unused
647
     */
648
    char *stats_out;
649
    
650
    /**
651
     * pass2 encoding statistics input buffer.
652
     * concatenated stuff from stats_out of pass1 should be placed here
653
     * - encoding: allocated/set/freed by user
654
     * - decoding: unused
655
     */
656
    char *stats_in;
657
    
658
    /**
659
     * ratecontrol qmin qmax limiting method.
660
     * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax
661
     * - encoding: set by user.
662
     * - decoding: unused
663
     */
664
    float rc_qsquish;
665

    
666
    float rc_qmod_amp;
667
    int rc_qmod_freq;
668
    
669
    /**
670
     * ratecontrol override, see RcOverride.
671
     * - encoding: allocated/set/freed by user.
672
     * - decoding: unused
673
     */
674
    RcOverride *rc_override;
675
    int rc_override_count;
676
    
677
    /**
678
     * rate control equation.
679
     * - encoding: set by user
680
     * - decoding: unused
681
     */
682
    char *rc_eq;
683
    
684
    /**
685
     * maximum bitrate.
686
     * - encoding: set by user.
687
     * - decoding: unused
688
     */
689
    int rc_max_rate;
690
    
691
    /**
692
     * minimum bitrate.
693
     * - encoding: set by user.
694
     * - decoding: unused
695
     */
696
    int rc_min_rate;
697
    
698
    /**
699
     * decoder bitstream buffer size.
700
     * - encoding: set by user.
701
     * - decoding: unused
702
     */
703
    int rc_buffer_size;
704
    float rc_buffer_aggressivity;
705

    
706
    /**
707
     * qscale factor between p and i frames.
708
     * - encoding: set by user.
709
     * - decoding: unused
710
     */
711
    float i_quant_factor;
712
    
713
    /**
714
     * qscale offset between p and i frames.
715
     * if > 0 then the last p frame quantizer will be used (q= lastp_q*factor+offset)
716
     * if < 0 then normal ratecontrol will be done (q= -normal_q*factor+offset)
717
     * - encoding: set by user.
718
     * - decoding: unused
719
     */
720
    float i_quant_offset;
721
    
722
    /**
723
     * initial complexity for pass1 ratecontrol.
724
     * - encoding: set by user.
725
     * - decoding: unused
726
     */
727
    float rc_initial_cplx;
728

    
729
    /**
730
     * dct algorithm, see FF_DCT_* below.
731
     * - encoding: set by user
732
     * - decoding: unused
733
     */
734
    int dct_algo;
735
#define FF_DCT_AUTO    0
736
#define FF_DCT_FASTINT 1
737
#define FF_DCT_INT     2
738
#define FF_DCT_MMX     3
739
#define FF_DCT_MLIB    4
740
#define FF_DCT_ALTIVEC 5
741
    
742
    /**
743
     * luminance masking (0-> disabled).
744
     * - encoding: set by user
745
     * - decoding: unused
746
     */
747
    float lumi_masking;
748
    
749
    /**
750
     * temporary complexity masking (0-> disabled).
751
     * - encoding: set by user
752
     * - decoding: unused
753
     */
754
    float temporal_cplx_masking;
755
    
756
    /**
757
     * spatial complexity masking (0-> disabled).
758
     * - encoding: set by user
759
     * - decoding: unused
760
     */
761
    float spatial_cplx_masking;
762
    
763
    /**
764
     * p block masking (0-> disabled).
765
     * - encoding: set by user
766
     * - decoding: unused
767
     */
768
    float p_masking;
769

    
770
    /**
771
     * darkness masking (0-> disabled).
772
     * - encoding: set by user
773
     * - decoding: unused
774
     */
775
    float dark_masking;
776
    
777
    /**
778
     * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
779
     * this is used to workaround some encoder bugs
780
     * - encoding: unused
781
     * - decoding: set by user, will be converted to upper case by lavc during init
782
     */
783
    int fourcc;
784

    
785
    /**
786
     * idct algorithm, see FF_IDCT_* below.
787
     * - encoding: set by user
788
     * - decoding: set by user
789
     */
790
    int idct_algo;
791
#define FF_IDCT_AUTO         0
792
#define FF_IDCT_INT          1
793
#define FF_IDCT_SIMPLE       2
794
#define FF_IDCT_SIMPLEMMX    3
795
#define FF_IDCT_LIBMPEG2MMX  4
796
#define FF_IDCT_PS2          5
797
#define FF_IDCT_MLIB         6
798
#define FF_IDCT_ARM          7
799
#define FF_IDCT_ALTIVEC      8
800

    
801
    /**
802
     * slice count.
803
     * - encoding: set by lavc
804
     * - decoding: set by user (or 0)
805
     */
806
    int slice_count;
807
    /**
808
     * slice offsets in the frame in bytes.
809
     * - encoding: set/allocated by lavc
810
     * - decoding: set/allocated by user (or NULL)
811
     */
812
    int *slice_offset;
813

    
814
    /**
815
     * error concealment flags.
816
     * - encoding: unused
817
     * - decoding: set by user
818
     */
819
    int error_concealment;
820
#define FF_EC_GUESS_MVS   1
821
#define FF_EC_DEBLOCK     2
822

    
823
    /**
824
     * dsp_mask could be used to disable unwanted
825
     * CPU features (i.e. MMX, SSE. ...)
826
     */
827
     unsigned dsp_mask;
828

    
829
    /**
830
     * bits per sample/pixel from the demuxer (needed for huffyuv).
831
     * - encoding: set by lavc
832
     * - decoding: set by user
833
     */
834
     int bits_per_sample;
835
    
836
    /**
837
     * prediction method (needed for huffyuv).
838
     * - encoding: set by user
839
     * - decoding: unused
840
     */
841
     int prediction_method;
842
#define FF_PRED_LEFT   0
843
#define FF_PRED_PLANE  1
844
#define FF_PRED_MEDIAN 2
845
    
846
    /**
847
     * aspect ratio (0 if unknown).
848
     * - encoding: set by user.
849
     * - decoding: set by lavc.
850
     */
851
    float aspect_ratio;
852

    
853
    /**
854
     * the picture in the bitstream.
855
     * - encoding: set by lavc
856
     * - decoding: set by lavc
857
     */
858
    AVFrame *coded_frame;
859

    
860
    /**
861
     * debug.
862
     * - encoding: set by user.
863
     * - decoding: set by user.
864
     */
865
    int debug;
866
#define FF_DEBUG_PICT_INFO 1
867
#define FF_DEBUG_RC        2
868
#define FF_DEBUG_BITSTREAM 4
869
#define FF_DEBUG_MB_TYPE   8
870
#define FF_DEBUG_QP        16
871
#define FF_DEBUG_MV        32
872
#define FF_DEBUG_VIS_MV    0x00000040
873
#define FF_DEBUG_SKIP      0x00000080
874
#define FF_DEBUG_STARTCODE 0x00000100
875
#define FF_DEBUG_PTS       0x00000200
876
    
877
    /**
878
     * error.
879
     * - encoding: set by lavc if flags&CODEC_FLAG_PSNR
880
     * - decoding: unused
881
     */
882
    uint64_t error[4];
883
    
884
    /**
885
     * minimum MB quantizer.
886
     * - encoding: set by user.
887
     * - decoding: unused
888
     */
889
    int mb_qmin;
890

    
891
    /**
892
     * maximum MB quantizer.
893
     * - encoding: set by user.
894
     * - decoding: unused
895
     */
896
    int mb_qmax;
897
    
898
    /**
899
     * motion estimation compare function.
900
     * - encoding: set by user.
901
     * - decoding: unused
902
     */
903
    int me_cmp;
904
    /**
905
     * subpixel motion estimation compare function.
906
     * - encoding: set by user.
907
     * - decoding: unused
908
     */
909
    int me_sub_cmp;
910
    /**
911
     * macroblock compare function (not supported yet).
912
     * - encoding: set by user.
913
     * - decoding: unused
914
     */
915
    int mb_cmp;
916
#define FF_CMP_SAD  0
917
#define FF_CMP_SSE  1
918
#define FF_CMP_SATD 2
919
#define FF_CMP_DCT  3
920
#define FF_CMP_PSNR 4
921
#define FF_CMP_BIT  5
922
#define FF_CMP_RD   6
923
#define FF_CMP_ZERO 7
924
#define FF_CMP_CHROMA 256
925
    
926
    /**
927
     * ME diamond size & shape.
928
     * - encoding: set by user.
929
     * - decoding: unused
930
     */
931
    int dia_size;
932

    
933
    /**
934
     * amount of previous MV predictors (2a+1 x 2a+1 square).
935
     * - encoding: set by user.
936
     * - decoding: unused
937
     */
938
    int last_predictor_count;
939

    
940
    /**
941
     * pre pass for motion estimation.
942
     * - encoding: set by user.
943
     * - decoding: unused
944
     */
945
    int pre_me;
946

    
947
    /**
948
     * motion estimation pre pass compare function.
949
     * - encoding: set by user.
950
     * - decoding: unused
951
     */
952
    int me_pre_cmp;
953

    
954
    /**
955
     * ME pre pass diamond size & shape.
956
     * - encoding: set by user.
957
     * - decoding: unused
958
     */
959
    int pre_dia_size;
960

    
961
    /**
962
     * subpel ME quality.
963
     * - encoding: set by user.
964
     * - decoding: unused
965
     */
966
    int me_subpel_quality;
967

    
968
    /**
969
     * callback to negotiate the pixelFormat.
970
     * @param fmt is the list of formats which are supported by the codec,
971
     * its terminated by -1 as 0 is a valid format, the formats are ordered by quality
972
     * the first is allways the native one
973
     * @return the choosen format
974
     * - encoding: unused
975
     * - decoding: set by user, if not set then the native format will always be choosen
976
     */
977
    enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
978

    
979
    /**
980
     * DTG active format information (additionnal aspect ratio
981
     * information only used in DVB MPEG2 transport streams). 0 if
982
     * not set.
983
     * 
984
     * - encoding: unused.
985
     * - decoding: set by decoder 
986
     */
987
    int dtg_active_format;
988
#define FF_DTG_AFD_SAME         8
989
#define FF_DTG_AFD_4_3          9
990
#define FF_DTG_AFD_16_9         10
991
#define FF_DTG_AFD_14_9         11
992
#define FF_DTG_AFD_4_3_SP_14_9  13
993
#define FF_DTG_AFD_16_9_SP_14_9 14
994
#define FF_DTG_AFD_SP_4_3       15
995

    
996
    int me_range;
997
    /**
998
     * Maximum motion estimation search range in subpel units.
999
     * if 0 then no limit
1000
     * 
1001
     * - encoding: set by user.
1002
     * - decoding: unused.
1003
     */
1004

    
1005
} AVCodecContext;
1006

    
1007
//void avcodec_getopt(AVCodecContext* avctx, const char* str, avc_config_t** config);
1008

    
1009
/**
1010
 * AVOption.
1011
 */
1012
typedef struct AVOption {
1013
    /** options' name */
1014
    const char *name; /* if name is NULL, it indicates a link to next */
1015
    /** short English text help */
1016
    const char *help;
1017
    /** offset to context structure where the parsed value should be stored */
1018
    int offset;
1019
    /** options' type */
1020
    int type;
1021
#define FF_OPT_TYPE_BOOL 1      ///< boolean - true,1,on  (or simply presence)
1022
#define FF_OPT_TYPE_DOUBLE 2    ///< double
1023
#define FF_OPT_TYPE_INT 3       ///< integer
1024
#define FF_OPT_TYPE_STRING 4    ///< string (finished with \0)
1025
#define FF_OPT_TYPE_MASK 0x1f        ///< mask for types - upper bits are various flags
1026
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
1027
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
1028
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
1029
    /** min value  (min == max   ->  no limits) */
1030
    double min;
1031
    /** maximum value for double/int */
1032
    double max;
1033
    /** default boo [0,1]l/double/int value */
1034
    double defval;
1035
    /**
1036
     * default string value (with optional semicolon delimited extra option-list
1037
     * i.e.   option1;option2;option3
1038
     * defval might select other then first argument as default
1039
     */
1040
    const char *defstr;
1041
    const struct AVOption *sub; /* used when name is NULL */
1042
    /* when it's NULL return to previous level (or finish reading) */
1043
#define FF_OPT_MAX_DEPTH 10
1044
} AVOption;
1045

    
1046
/**
1047
 * AVCodec.
1048
 */
1049
typedef struct AVCodec {
1050
    const char *name;
1051
    int type;
1052
    int id;
1053
    int priv_data_size;
1054
    int (*init)(AVCodecContext *);
1055
    int (*encode)(AVCodecContext *, uint8_t *buf, int buf_size, void *data);
1056
    int (*close)(AVCodecContext *);
1057
    int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
1058
                  uint8_t *buf, int buf_size);
1059
    int capabilities;
1060
    const AVOption *options;
1061
    struct AVCodec *next;
1062
} AVCodec;
1063

    
1064
/**
1065
 * four components are given, that's all.
1066
 * the last component is alpha
1067
 */
1068
typedef struct AVPicture {
1069
    uint8_t *data[4];
1070
    int linesize[4];
1071
} AVPicture;
1072

    
1073
extern AVCodec ac3_encoder;
1074
extern AVCodec mp2_encoder;
1075
extern AVCodec mp3lame_encoder;
1076
extern AVCodec oggvorbis_encoder;
1077
extern AVCodec mpeg1video_encoder;
1078
extern AVCodec h263_encoder;
1079
extern AVCodec h263p_encoder;
1080
extern AVCodec rv10_encoder;
1081
extern AVCodec mjpeg_encoder;
1082
extern AVCodec mpeg4_encoder;
1083
extern AVCodec msmpeg4v1_encoder;
1084
extern AVCodec msmpeg4v2_encoder;
1085
extern AVCodec msmpeg4v3_encoder;
1086
extern AVCodec wmv1_encoder;
1087
extern AVCodec wmv2_encoder;
1088
extern AVCodec huffyuv_encoder;
1089

    
1090
extern AVCodec h263_decoder;
1091
extern AVCodec mpeg4_decoder;
1092
extern AVCodec msmpeg4v1_decoder;
1093
extern AVCodec msmpeg4v2_decoder;
1094
extern AVCodec msmpeg4v3_decoder;
1095
extern AVCodec wmv1_decoder;
1096
extern AVCodec wmv2_decoder;
1097
extern AVCodec mpeg_decoder;
1098
extern AVCodec h263i_decoder;
1099
extern AVCodec rv10_decoder;
1100
extern AVCodec svq1_decoder;
1101
extern AVCodec dvvideo_decoder;
1102
extern AVCodec dvaudio_decoder;
1103
extern AVCodec wmav1_decoder;
1104
extern AVCodec wmav2_decoder;
1105
extern AVCodec mjpeg_decoder;
1106
extern AVCodec mjpegb_decoder;
1107
extern AVCodec mp2_decoder;
1108
extern AVCodec mp3_decoder;
1109
extern AVCodec mace3_decoder;
1110
extern AVCodec mace6_decoder;
1111
extern AVCodec huffyuv_decoder;
1112
extern AVCodec oggvorbis_decoder;
1113
extern AVCodec cyuv_decoder;
1114

    
1115
/* pcm codecs */
1116
#define PCM_CODEC(id, name) \
1117
extern AVCodec name ## _decoder; \
1118
extern AVCodec name ## _encoder
1119

    
1120
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
1121
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
1122
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
1123
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
1124
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
1125
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
1126
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
1127
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
1128

    
1129
/* adpcm codecs */
1130

    
1131
PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
1132
PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
1133
PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
1134

    
1135
#undef PCM_CODEC
1136

    
1137
/* dummy raw video codec */
1138
extern AVCodec rawvideo_codec;
1139

    
1140
/* the following codecs use external GPL libs */
1141
extern AVCodec ac3_decoder;
1142

    
1143
/* resample.c */
1144

    
1145
struct ReSampleContext;
1146

    
1147
typedef struct ReSampleContext ReSampleContext;
1148

    
1149
ReSampleContext *audio_resample_init(int output_channels, int input_channels, 
1150
                                     int output_rate, int input_rate);
1151
int audio_resample(ReSampleContext *s, short *output, short *input, int nb_samples);
1152
void audio_resample_close(ReSampleContext *s);
1153

    
1154
/* YUV420 format is assumed ! */
1155

    
1156
struct ImgReSampleContext;
1157

    
1158
typedef struct ImgReSampleContext ImgReSampleContext;
1159

    
1160
ImgReSampleContext *img_resample_init(int output_width, int output_height,
1161
                                      int input_width, int input_height);
1162

    
1163
ImgReSampleContext *img_resample_full_init(int owidth, int oheight,
1164
                                      int iwidth, int iheight,
1165
                                      int topBand, int bottomBand,
1166
                                      int leftBand, int rightBand);
1167

    
1168
void img_resample(ImgReSampleContext *s, 
1169
                  AVPicture *output, AVPicture *input);
1170

    
1171
void img_resample_close(ImgReSampleContext *s);
1172

    
1173
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
1174
                   int pix_fmt, int width, int height);
1175
int avpicture_get_size(int pix_fmt, int width, int height);
1176
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
1177
const char *avcodec_get_pix_fmt_name(int pix_fmt);
1178

    
1179
/* convert among pixel formats */
1180
int img_convert(AVPicture *dst, int dst_pix_fmt,
1181
                AVPicture *src, int pix_fmt, 
1182
                int width, int height);
1183

    
1184
/* deinterlace a picture */
1185
int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
1186
                          int pix_fmt, int width, int height);
1187

    
1188
/* external high level API */
1189

    
1190
extern AVCodec *first_avcodec;
1191

    
1192
/* returns LIBAVCODEC_VERSION_INT constant */
1193
unsigned avcodec_version(void);
1194
/* returns LIBAVCODEC_BUILD constant */
1195
unsigned avcodec_build(void);
1196
void avcodec_init(void);
1197

    
1198
void register_avcodec(AVCodec *format);
1199
AVCodec *avcodec_find_encoder(enum CodecID id);
1200
AVCodec *avcodec_find_encoder_by_name(const char *name);
1201
AVCodec *avcodec_find_decoder(enum CodecID id);
1202
AVCodec *avcodec_find_decoder_by_name(const char *name);
1203
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
1204

    
1205
void avcodec_get_context_defaults(AVCodecContext *s);
1206
AVCodecContext *avcodec_alloc_context(void);
1207
AVFrame *avcodec_alloc_frame(void);
1208

    
1209
int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
1210
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
1211

    
1212
int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
1213
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples, 
1214
                         int *frame_size_ptr,
1215
                         uint8_t *buf, int buf_size);
1216
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 
1217
                         int *got_picture_ptr,
1218
                         uint8_t *buf, int buf_size);
1219
int avcodec_parse_frame(AVCodecContext *avctx, uint8_t **pdata, 
1220
                        int *data_size_ptr,
1221
                        uint8_t *buf, int buf_size);
1222
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1223
                         const short *samples);
1224
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
1225
                         const AVFrame *pict);
1226

    
1227
int avcodec_close(AVCodecContext *avctx);
1228

    
1229
void avcodec_register_all(void);
1230

    
1231
void avcodec_flush_buffers(AVCodecContext *avctx);
1232

    
1233

    
1234

    
1235
/**
1236
 * Interface for 0.5.0 version
1237
 *
1238
 * do not even think about it's usage for this moment
1239
 */
1240

    
1241
typedef struct {
1242
    /// compressed size used from given memory buffer
1243
    int size;
1244
    /// I/P/B frame type
1245
    int frame_type;
1246
} avc_enc_result_t;
1247

    
1248
/**
1249
 * Commands
1250
 * order can't be changed - once it was defined
1251
 */
1252
typedef enum {
1253
    // general commands
1254
    AVC_OPEN_BY_NAME = 0xACA000,
1255
    AVC_OPEN_BY_CODEC_ID,
1256
    AVC_OPEN_BY_FOURCC,
1257
    AVC_CLOSE,
1258

    
1259
    AVC_FLUSH,
1260
    // pin - struct { uint8_t* src, uint_t src_size }
1261
    // pout - struct { AVPicture* img, consumed_bytes,
1262
    AVC_DECODE,
1263
    // pin - struct { AVPicture* img, uint8_t* dest, uint_t dest_size }
1264
    // pout - uint_t used_from_dest_size
1265
    AVC_ENCODE, 
1266

    
1267
    // query/get video commands
1268
    AVC_GET_VERSION = 0xACB000,
1269
    AVC_GET_WIDTH,
1270
    AVC_GET_HEIGHT,
1271
    AVC_GET_DELAY,
1272
    AVC_GET_QUANT_TABLE,
1273
    // ...
1274

    
1275
    // query/get audio commands
1276
    AVC_GET_FRAME_SIZE = 0xABC000,
1277

    
1278
    // maybe define some simple structure which
1279
    // might be passed to the user - but they can't
1280
    // contain any codec specific parts and these
1281
    // calls are usualy necessary only few times
1282

    
1283
    // set video commands
1284
    AVC_SET_WIDTH = 0xACD000,
1285
    AVC_SET_HEIGHT,
1286

    
1287
    // set video encoding commands
1288
    AVC_SET_FRAME_RATE = 0xACD800,
1289
    AVC_SET_QUALITY,
1290
    AVC_SET_HURRY_UP,
1291

    
1292
    // set audio commands
1293
    AVC_SET_SAMPLE_RATE = 0xACE000,
1294
    AVC_SET_CHANNELS,
1295

    
1296
} avc_cmd_t;
1297

    
1298
/**
1299
 * \param handle  allocated private structure by libavcodec
1300
 *                for initialization pass NULL - will be returned pout
1301
 *                user is supposed to know nothing about its structure
1302
 * \param cmd     type of operation to be performed
1303
 * \param pint    input parameter
1304
 * \param pout    output parameter
1305
 *
1306
 * \returns  command status - eventually for query command it might return
1307
 * integer resulting value
1308
 */
1309
int avcodec(void* handle, avc_cmd_t cmd, void* pin, void* pout);
1310

    
1311
/* memory */
1312
void *av_malloc(unsigned int size);
1313
void *av_mallocz(unsigned int size);
1314
void *av_realloc(void *ptr, unsigned int size);
1315
void av_free(void *ptr);
1316
char *av_strdup(const char *s);
1317
void __av_freep(void **ptr);
1318
#define av_freep(p) __av_freep((void **)(p))
1319
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
1320
/* for static data only */
1321
/* call av_free_static to release all staticaly allocated tables */
1322
void av_free_static(void);
1323
void *__av_mallocz_static(void** location, unsigned int size);
1324
#define av_mallocz_static(p, s) __av_mallocz_static((void **)(p), s)
1325

    
1326
#ifdef __cplusplus
1327
}
1328
#endif
1329

    
1330
#endif /* AVCODEC_H */