70 int h,
int w,
int stride, uint8_t *pfptr)
77 for (i = dx + h; i > dx; i--) {
78 nsptr = sptr + i * stride + dy * 3;
79 npfptr = pfptr + i * stride + dy * 3;
80 for (j = 0; j < w * 3; j++) {
81 diff |= npfptr[j] ^ nsptr[j];
99 "Input dimensions too large, input must be max 4096x4096 !\n");
104 memset(&s->
zstream, 0,
sizeof(z_stream));
124 int buf_size,
int block_width,
int block_height,
125 uint8_t *previous_frame,
int *I_frame)
129 int h_blocks, v_blocks, h_part, v_part, i, j;
135 put_bits(&pb, 4, block_width / 16 - 1);
137 put_bits(&pb, 4, block_height / 16 - 1);
148 for (j = 0; j < v_blocks + (v_part ? 1 : 0); j++) {
150 int y_pos = j * block_height;
151 int cur_blk_height = (j < v_blocks) ? block_height : v_part;
154 for (i = 0; i < h_blocks + (h_part ? 1 : 0); i++) {
155 int x_pos = i * block_width;
156 int cur_blk_width = (i < h_blocks) ? block_width : h_part;
158 uint8_t *ptr = buf + buf_pos;
164 x_pos, cur_blk_height, cur_blk_width,
167 if (res || *I_frame) {
168 unsigned long zsize = 3 * block_width * block_height;
169 ret = compress2(ptr + 2, &zsize, s->
tmpblock,
170 3 * cur_blk_width * cur_blk_height, 9);
175 "error while compressing block %dx%d\n", i, j);
177 bytestream_put_be16(&ptr, zsize);
178 buf_pos += zsize + 2;
182 bytestream_put_be16(&ptr, 0);
198 int buf_size,
void *
data)
206 int opt_w = 4, opt_h = 4;
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
AVFrame * coded_frame
the picture in the bitstream
static int encode_bitstream(FlashSVContext *s, AVFrame *p, uint8_t *buf, int buf_size, int block_width, int block_height, uint8_t *previous_frame, int *I_frame)
static int copy_region_enc(uint8_t *sptr, uint8_t *dptr, int dx, int dy, int h, int w, int stride, uint8_t *pfptr)
static int init(AVCodecParserContext *s)
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
struct FlashSVContext FlashSVContext
#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.
static void put_bits(PutBitContext *s, int n, unsigned int value)
Write up to 31 bits into a bitstream.
AVCodec ff_flashsv_encoder
enum AVPictureType pict_type
Picture type of the frame, see ?_TYPE below.
static av_cold int flashsv_encode_end(AVCodecContext *avctx)
int width
picture width / height.
static int flashsv_encode_frame(AVCodecContext *avctx, uint8_t *buf, int buf_size, void *data)
#define av_dlog(pctx,...)
av_dlog macros Useful to print debug messages that shouldn't get compiled in normally.
int linesize[AV_NUM_DATA_POINTERS]
Size, in bytes, of the data for each picture/channel plane.
main external API structure.
static void close(AVCodecParserContext *s)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
packed RGB 8:8:8, 24bpp, BGRBGR...
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
static av_cold int flashsv_encode_init(AVCodecContext *avctx)
int key_frame
1 -> keyframe, 0-> not
int frame_number
audio or video frame number