41 #define EA_PREAMBLE_SIZE 8
42 #define MADk_TAG MKTAG('M', 'A', 'D', 'k')
43 #define MADm_TAG MKTAG('M', 'A', 'D', 'm')
44 #define MADe_TAG MKTAG('M', 'A', 'D', 'e')
77 static inline void comp(
unsigned char *dst,
int dst_stride,
78 unsigned char *src,
int src_stride,
int add)
83 dst[j*dst_stride + i] = av_clip_uint8(src[j*src_stride + i] + add);
88 int j,
int mv_x,
int mv_y,
int add)
91 comp(frame->
data[0] + (mb_y*16 + ((j&2)<<2))*frame->
linesize[0] + mb_x*16 + ((j&1)<<3),
105 int mb_x,
int mb_y,
int j)
109 frame->
data[0] + (mb_y*16 + ((j&2)<<2))*frame->
linesize[0] + mb_x*16 + ((j&1)<<3),
114 frame->
data[index] + (mb_y*8)*frame->
linesize[index] + mb_x*8,
126 block[0] = (128 +
get_sbits(&s->
gb, 8)) * quant_matrix[0];
140 }
else if (level != 0) {
143 level = (level*quant_matrix[j]) >> 4;
159 level = (level*quant_matrix[j]) >> 4;
163 level = (level*quant_matrix[j]) >> 4;
206 for (j=0; j<6; j++) {
207 if (mv_map & (1<<j)) {
228 void *
data,
int *got_frame,
232 int buf_size = avpkt->
size;
242 chunk_type = bytestream2_get_le32(&gb);
247 bytestream2_get_le16(&gb), 1000, 1<<30);
249 width = bytestream2_get_le16(&gb);
250 height = bytestream2_get_le16(&gb);
260 if (avctx->
width != width || avctx->
height != height) {
av_cold void ff_dsputil_init(DSPContext *c, AVCodecContext *avctx)
av_cold void ff_init_scantable_permutation(uint8_t *idct_permutation, int idct_permutation_type)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
uint16_t quant_matrix[64]
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
#define AV_LOG_WARNING
Something somehow does not look correct.
av_cold void ff_mpeg12_init_vlcs(void)
static void comp_block(MadContext *t, AVFrame *frame, int mb_x, int mb_y, int j, int mv_x, int mv_y, int add)
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
#define DECLARE_ALIGNED(n, t, v)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer with padding, reusing the given one if large enough.
static int get_sbits(GetBitContext *s, int n)
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
static void decode_block_intra(MadContext *s, int16_t *block)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
bitstream reader API header.
uint8_t idct_permutation[64]
idct input permutation.
static void decode_mb(MadContext *s, AVFrame *frame, int inter)
static void calc_quant_matrix(MadContext *s, int qscale)
const uint16_t ff_mpeg1_default_intra_matrix[64]
#define UPDATE_CACHE(name, gb)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
void(* bswap16_buf)(uint16_t *dst, const uint16_t *src, int len)
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
static av_cold int decode_end(AVCodecContext *avctx)
#define CLOSE_READER(name, gb)
#define GET_RL_VLC(level, run, name, gb, table, bits,max_depth, need_update)
#define SKIP_BITS(name, gb, num)
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
int width
picture width / height.
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
#define LAST_SKIP_BITS(name, gb, num)
RL_VLC_ELEM * rl_vlc[32]
decoding only
#define SHOW_UBITS(name, gb, num)
static int decode210(GetBitContext *gb)
static av_always_inline int bytestream2_tell(GetByteContext *g)
Libavcodec external API header.
static void idct_put(MadContext *t, AVFrame *frame, int16_t *block, int mb_x, int mb_y, int j)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
const uint16_t ff_inv_aanscales[64]
main external API structure.
static void close(AVCodecParserContext *s)
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
#define OPEN_READER(name, gb)
av_cold void ff_init_scantable(uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable)
static int decode_motion(GetBitContext *gb)
static unsigned int get_bits1(GetBitContext *s)
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
AAN (Arai Agui Nakajima) (I)DCT tables.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
void ff_ea_idct_put_c(uint8_t *dest, int linesize, int16_t *block)
#define SHOW_SBITS(name, gb, num)
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
common internal api header.
const uint8_t ff_zigzag_direct[64]
#define CODEC_FLAG_GRAY
Only decode/encode grayscale.
void(* clear_block)(int16_t *block)
static av_cold int init(AVCodecParserContext *s)
static void comp(unsigned char *dst, int dst_stride, unsigned char *src, int src_stride, int add)
unsigned int bitstream_buf_size
This structure stores compressed data.
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
static av_cold int decode_init(AVCodecContext *avctx)