31 #define MAX_RLE_BULK 127
33 #define MAX_RLE_REPEAT 128
35 #define MAX_RLE_SKIP 254
89 if (avctx->
width % 4) {
148 unsigned int skipcount;
155 int total_repeat_cost;
158 int lowest_bulk_cost;
159 int lowest_bulk_cost_index;
160 int sec_lowest_bulk_cost;
161 int sec_lowest_bulk_cost_index;
163 uint8_t *this_line = p->
data[0] + line*p-> linesize[0] +
172 lowest_bulk_cost = INT_MAX / 2;
173 lowest_bulk_cost_index =
width;
174 sec_lowest_bulk_cost = INT_MAX / 2;
175 sec_lowest_bulk_cost_index =
width;
179 for (i = width - 1; i >= 0; i--) {
186 lowest_bulk_cost = sec_lowest_bulk_cost;
187 lowest_bulk_cost_index = sec_lowest_bulk_cost_index;
189 sec_lowest_bulk_cost = INT_MAX / 2;
190 sec_lowest_bulk_cost_index =
width;
197 sec_lowest_bulk_cost++;
202 prev_bulk_cost = s->
length_table[i + 1] + base_bulk_cost;
203 if (prev_bulk_cost <= sec_lowest_bulk_cost) {
206 if (prev_bulk_cost <= lowest_bulk_cost) {
211 sec_lowest_bulk_cost = INT_MAX / 2;
213 lowest_bulk_cost = prev_bulk_cost;
214 lowest_bulk_cost_index = i + 1;
217 sec_lowest_bulk_cost = prev_bulk_cost;
218 sec_lowest_bulk_cost_index = i + 1;
245 if (repeatcount > 1 && (skipcount == 0 || total_repeat_cost < total_skip_cost)) {
250 else if (skipcount > 0) {
281 bytestream_put_byte(buf, s->
skip_table[0] + 1);
284 else bytestream_put_byte(buf, 1);
289 bytestream_put_byte(buf, rlecode);
292 bytestream_put_byte(buf, s->
skip_table[i] + 1);
295 else if (rlecode > 0) {
303 bytestream_put_byte(buf, *(this_line + i*s->
pixel_size + j) ^ 0xff);
315 bytestream_put_byte(buf, *(this_line + i*s->
pixel_size + j) ^ 0xff);
322 bytestream_put_byte(buf, -1);
335 for (start_line = 0; start_line < s->
avctx->
height; start_line++)
341 for (end_line=s->
avctx->
height; end_line > start_line; end_line--)
348 bytestream_put_be32(&buf, 0);
351 bytestream_put_be16(&buf, 0);
353 bytestream_put_be16(&buf, 8);
354 bytestream_put_be16(&buf, start_line);
355 bytestream_put_be16(&buf, 0);
356 bytestream_put_be16(&buf, end_line - start_line);
357 bytestream_put_be16(&buf, 0);
359 for (i = start_line; i < end_line; i++)
362 bytestream_put_byte(&buf, 0);
363 AV_WB32(orig_buf, buf - orig_buf);
364 return buf - orig_buf;
368 const AVFrame *pict,
int *got_packet)
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
Check AVPacket size and/or allocate data.
int linesize[AV_NUM_DATA_POINTERS]
number of bytes per line
int * length_table
This array will contain the length of the best rle encoding of the line starting at ith pixel...
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
packed RGB 8:8:8, 24bpp, RGBRGB...
AVFrame * coded_frame
the picture in the bitstream
static av_cold int init(AVCodecContext *avctx)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static int encode_frame(QtrleEncContext *s, const AVFrame *p, uint8_t *buf)
Encode frame including header.
static av_cold int qtrle_encode_end(AVCodecContext *avctx)
void av_picture_copy(AVPicture *dst, const AVPicture *src, enum AVPixelFormat pix_fmt, int width, int height)
Copy image src to dst.
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointers to the image data planes
uint8_t * skip_table
Will contain at ith position the number of consecutive pixels equal to the previous frame starting fr...
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
void avpicture_free(AVPicture *picture)
Free a picture previously allocated by avpicture_alloc().
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#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. ...
#define MAX_RLE_BULK
Maximum RLE code for bulk copy.
static int qtrle_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
const char * name
Name of the codec implementation.
#define MAX_RLE_SKIP
Maximum RLE code for skip.
Libavcodec external API header.
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
int flags
A combination of AV_PKT_FLAG values.
static av_cold int qtrle_encode_init(AVCodecContext *avctx)
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
enum AVPictureType pict_type
Picture type of the frame.
int width
picture width / height.
#define MAX_RLE_REPEAT
Maximum RLE code for repeat.
unsigned int max_buf_size
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
int avpicture_alloc(AVPicture *picture, enum AVPixelFormat pix_fmt, int width, int height)
Allocate memory for the pixels of a picture and setup the AVPicture fields for it.
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), big-endian , X=unused/undefined
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static void qtrle_encode_line(QtrleEncContext *s, const AVFrame *p, int line, uint8_t **buf)
Compute the best RLE sequence for a line.
int gop_size
the number of pictures in a group of pictures, or 0 for intra_only
common internal api header.
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
signed char * rlecode_table
This array will contain at ith position the value of the best RLE code if the line started at pixel i...
int key_frame
1 -> keyframe, 0-> not
static void * av_mallocz_array(size_t nmemb, size_t size)
int frame_number
Frame counter, set by libavcodec.
AVPixelFormat
Pixel format.
This structure stores compressed data.
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...