76 for (i = dx + h; i > dx; i--) {
77 nsptr = sptr + i * stride + dy * 3;
78 npfptr = pfptr + i * stride + dy * 3;
79 for (j = 0; j < w * 3; j++) {
80 diff |= npfptr[j] ^ nsptr[j];
108 "Input dimensions too large, input must be max 4095x4095 !\n");
134 int h_blocks, v_blocks, h_part, v_part,
i, j;
140 put_bits(&pb, 4, block_width / 16 - 1);
142 put_bits(&pb, 4, block_height / 16 - 1);
153 for (j = 0; j < v_blocks + (v_part ? 1 : 0); j++) {
156 int cur_blk_height = (j < v_blocks) ? block_height : v_part;
159 for (i = 0; i < h_blocks + (h_part ? 1 : 0); i++) {
161 int cur_blk_width = (i < h_blocks) ? block_width : h_part;
169 x_pos, cur_blk_height, cur_blk_width,
172 if (res || *I_frame) {
174 ret = compress2(ptr + 2, &zsize, s->
tmpblock,
175 3 * cur_blk_width * cur_blk_height, 9);
179 "error while compressing block %dx%d\n", i, j);
181 bytestream_put_be16(&ptr, zsize);
182 buf_pos += zsize + 2;
186 bytestream_put_be16(&ptr, 0);
202 const AVFrame *pict,
int *got_packet)
205 const AVFrame *
const p = pict;
209 int opt_w = 4, opt_h = 4;
248 #if FF_API_CODED_FRAME 257 #if FF_API_CODED_FRAME static int encode_bitstream(FlashSVContext *s, const AVFrame *p, uint8_t *buf, int buf_size, int block_width, int block_height, uint8_t *previous_frame, int *I_frame)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
static av_cold int init(AVCodecContext *avctx)
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
static int copy_region_enc(uint8_t *sptr, uint8_t *dptr, int dx, int dy, int h, int w, int stride, uint8_t *pfptr)
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static int flashsv_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
const char * name
Name of the codec implementation.
AVCodec ff_flashsv_encoder
int flags
A combination of AV_PKT_FLAG values.
enum AVPictureType pict_type
Picture type of the frame.
static av_cold int flashsv_encode_end(AVCodecContext *avctx)
int width
picture width / height.
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
packed RGB 8:8:8, 24bpp, BGRBGR...
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
static enum AVPixelFormat pix_fmts[]
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
GLint GLenum GLboolean GLsizei stride
#define FF_DISABLE_DEPRECATION_WARNINGS
common internal api header.
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
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)
static av_always_inline int diff(const uint32_t a, const uint32_t b)
#define FF_ENABLE_DEPRECATION_WARNINGS
int key_frame
1 -> keyframe, 0-> not
int frame_number
Frame counter, set by libavcodec.
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
AVPixelFormat
Pixel format.
This structure stores compressed data.