27 #define MAX_HUFF_CODES 16
56 int w4 = (avctx->
width + 3) & ~3;
57 int h4 = (avctx->
height + 3) & ~3;
103 for (i = 0; i < w; ++i)
199 while (x < mp->avctx->width) {
206 for (i = (x + 3) & ~3; i < x + w; i += 4) {
216 p.
y = av_clip(p.
y, 0, 31);
220 p.
v = av_clip(p.
v, -32, 31);
222 p.
u = av_clip(p.
u, -32, 31);
248 p.
y = av_clip(p.
y, 0, 31);
251 p.
v = av_clip(p.
v, -32, 31);
253 p.
u = av_clip(p.
u, -32, 31);
259 for (y0 = 0; y0 < 2; ++y0)
265 void *
data,
int *got_frame,
269 int buf_size = avpkt->
size;
272 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) {
340 .
name =
"motionpixels",
av_cold void ff_dsputil_init(DSPContext *c, AVCodecContext *avctx)
This structure describes decoded (raw) audio or video data.
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
static av_cold int init(AVCodecContext *avctx)
AVCodec ff_motionpixels_decoder
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
void av_freep(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer, reusing the given one if large enough.
#define AV_PIX_FMT_RGB555
static const uint32_t color[16+AV_CLASS_CATEGORY_NB]
static const uint8_t offset[511][2]
static av_cold int end(AVCodecContext *avctx)
const char * name
Name of the codec implementation.
int av_frame_ref(AVFrame *dst, AVFrame *src)
Setup a new reference to the data described by a given frame.
#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(* bswap_buf)(uint32_t *dst, const uint32_t *src, int w)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Libavcodec external API header.
#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...
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb)
int width
picture width / height.
static int mp_get_code(MotionPixelsContext *mp, GetBitContext *gb, int size, int code)
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)
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)
void avcodec_get_frame_defaults(AVFrame *frame)
Set the fields of the given AVFrame to default values.
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)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
static int mp_get_vlc(MotionPixelsContext *mp, GetBitContext *gb)
uint8_t gradient_scale[3]
static void mp_decode_line(MotionPixelsContext *mp, GetBitContext *gb, int y)
common internal api header.
static void mp_read_changes_map(MotionPixelsContext *mp, GetBitContext *gb, int count, int bits_len, int read_color)
#define AVERROR_INVALIDDATA
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 int mp_read_codes_table(MotionPixelsContext *mp, GetBitContext *gb)
static YuvPixel mp_rgb_yuv_table[1<< 15]
static int decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static void motionpixels_tableinit(void)
This structure stores compressed data.
void ff_free_vlc(VLC *vlc)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
void * av_mallocz(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...