27 #define MAX_HUFF_CODES 16
69 int w4 = (avctx->
width + 3) & ~3;
70 int h4 = (avctx->
height + 3) & ~3;
93 int offset, w, h,
color = 0, x, y, i;
111 for (i = 0; i < w; ++i)
198 while (x < mp->avctx->width) {
205 for (i = (x + 3) & ~3; i < x + w; i += 4) {
215 p.
y = av_clip(p.
y, 0, 31);
219 p.
v = av_clip(p.
v, -32, 31);
221 p.
u = av_clip(p.
u, -32, 31);
245 p.
y = av_clip(p.
y, 0, 31);
248 p.
v = av_clip(p.
v, -32, 31);
250 p.
u = av_clip(p.
u, -32, 31);
256 for (y0 = 0; y0 < 2; ++y0)
262 void *
data,
int *got_frame,
266 int buf_size = avpkt->
size;
269 int i, count1, count2, sz, ret;
283 memcpy(mp->
bswapbuf + (buf_size & ~3), buf + (buf_size & ~3), buf_size & 3);
288 for (i = !(avctx->
extradata[1] & 2); i < 2; ++i) {
326 .
name =
"motionpixels",
void(* bswap_buf)(uint32_t *dst, const uint32_t *src, int w)
This structure describes decoded (raw) audio or video data.
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
AVCodec ff_motionpixels_decoder
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
#define FF_ARRAY_ELEMS(a)
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
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.
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static YuvPixel mp_get_yuv_from_rgb(MotionPixelsContext *mp, int x, int y)
bitstream reader API header.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
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. ...
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
av_cold void ff_bswapdsp_init(BswapDSPContext *c)
#define FF_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buf...
static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb)
int width
picture width / height.
static int mp_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
static void mp_decode_frame_helper(MotionPixelsContext *mp, GetBitContext *gb)
static av_cold int mp_decode_init(AVCodecContext *avctx)
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
HuffCode codes[MAX_HUFF_CODES]
static void close(AVCodecParserContext *s)
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
static unsigned int get_bits1(GetBitContext *s)
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
static int mp_gradient(MotionPixelsContext *mp, int component, int v)
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
static int mp_get_vlc(MotionPixelsContext *mp, GetBitContext *gb)
uint8_t gradient_scale[3]
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static void mp_get_code(MotionPixelsContext *mp, GetBitContext *gb, int size, int code)
static void mp_decode_line(MotionPixelsContext *mp, GetBitContext *gb, int y)
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer, reusing the given one if large enough.
common internal api header.
static void mp_read_changes_map(MotionPixelsContext *mp, GetBitContext *gb, int count, int bits_len, int read_color)
#define AV_PIX_FMT_RGB555
static const uint8_t color[]
static av_cold int init(AVCodecParserContext *s)
static void mp_set_rgb_from_yuv(MotionPixelsContext *mp, int x, int y, const YuvPixel *p)
static av_cold int mp_decode_end(AVCodecContext *avctx)
VLC_TYPE(* table)[2]
code, bits
static YuvPixel mp_rgb_yuv_table[1<< 15]
static void mp_read_codes_table(MotionPixelsContext *mp, GetBitContext *gb)
static void motionpixels_tableinit(void)
This structure stores compressed data.
void ff_free_vlc(VLC *vlc)
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...