31 #define MAX_HUFF_CODES 16
73 int w4 = (avctx->
width + 3) & ~3;
74 int h4 = (avctx->
height + 3) & ~3;
95 #if !CONFIG_HARDCODED_TABLES
123 for (
i = 0;
i <
w; ++
i)
215 while (x < mp->avctx->width) {
222 for (
i = (x + 3) & ~3;
i < x +
w;
i += 4) {
275 for (y0 = 0; y0 < 2; ++y0)
281 void *
data,
int *got_frame,
285 int buf_size = avpkt->
size;
288 int i, count1, count2, sz, ret;
300 memcpy(mp->
bswapbuf + (buf_size & ~3), buf + (buf_size & ~3), buf_size & 3);
349 .
name =
"motionpixels",
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Libavcodec external API header.
static av_cold int init(AVCodecContext *avctx)
void ff_free_vlc(VLC *vlc)
int ff_init_vlc_from_lengths(VLC *vlc_arg, int nb_bits, int nb_codes, const int8_t *lens, int lens_wrap, const void *symbols, int symbols_wrap, int symbols_size, int offset, int flags, void *logctx)
Build VLC decoding tables suitable for use with get_vlc2()
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Identical in function to ff_get_buffer(), except it reuses the existing buffer if available.
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
bitstream reader API header.
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
static unsigned int get_bits1(GetBitContext *s)
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
@ AV_CODEC_ID_MOTIONPIXELS
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional AV_INPUT_BUFFER_PADDING_SIZE at the end w...
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
av_cold void ff_bswapdsp_init(BswapDSPContext *c)
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static int ff_thread_once(char *control, void(*routine)(void))
static const uint32_t color[16+AV_CLASS_CATEGORY_NB]
static av_cold int mp_decode_end(AVCodecContext *avctx)
static void mp_decode_frame_helper(MotionPixelsContext *mp, GetBitContext *gb)
static void mp_decode_line(MotionPixelsContext *mp, GetBitContext *gb, int y)
AVCodec ff_motionpixels_decoder
static int mp_get_code(MotionPixelsContext *mp, GetBitContext *gb, int size)
static void mp_set_rgb_from_yuv(MotionPixelsContext *mp, int x, int y, const YuvPixel *p)
static int mp_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static void mp_read_changes_map(MotionPixelsContext *mp, GetBitContext *gb, int count, int bits_len, int read_color)
static av_cold int mp_decode_init(AVCodecContext *avctx)
static av_always_inline int mp_gradient(MotionPixelsContext *mp, int component, int v)
static av_always_inline int mp_get_vlc(MotionPixelsContext *mp, GetBitContext *gb)
static int mp_read_codes_table(MotionPixelsContext *mp, GetBitContext *gb)
static YuvPixel mp_get_yuv_from_rgb(MotionPixelsContext *mp, int x, int y)
static av_cold void motionpixels_tableinit(void)
static YuvPixel mp_rgb_yuv_table[1<< 15]
static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb)
#define AV_PIX_FMT_RGB555
main external API structure.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
int width
picture width / height.
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
const char * name
Name of the codec implementation.
This structure describes decoded (raw) audio or video data.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
This structure stores compressed data.
void(* bswap_buf)(uint32_t *dst, const uint32_t *src, int w)
HuffCode codes[MAX_HUFF_CODES]
uint8_t gradient_scale[3]
VLC_TYPE(* table)[2]
code, bits
static const uint8_t offset[127][2]