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38 #define ZMBV_KEYFRAME 1
39 #define ZMBV_DELTAPAL 2
86 uint8_t *src2,
int stride2,
int bw,
int bh,
91 uint16_t histogram[256] = {0};
92 int bw_bytes = bw *
c->bypp;
95 for(j = 0; j < bh; j++){
96 for(
i = 0;
i < bw_bytes;
i++){
97 int t =
src[
i] ^ src2[
i];
105 *xored = (histogram[0] < bw_bytes * bh);
108 if (!*xored)
return 0;
111 for(
i = 0;
i < 256;
i++)
112 sum +=
c->score_tab[histogram[
i]];
121 int pstride,
int x,
int y,
int *mx,
int *my,
int *xored)
123 int dx, dy, txored, tv, bv, bw, bh;
132 bv =
block_cmp(
c,
src, sstride, prev, pstride, bw, bh, xored);
138 tv =
block_cmp(
c,
src, sstride, prev + mx0 *
c->bypp + my0 * pstride, pstride, bw, bh, &txored);
149 for(dy = -
c->lrange; dy <= c->urange; dy++){
150 for(dx = -
c->lrange; dx <= c->urange; dx++){
151 if(!dx && !dy)
continue;
152 if(dx == mx0 && dy == my0)
continue;
153 tv =
block_cmp(
c,
src, sstride, prev + dx *
c->bypp + dy * pstride, pstride, bw, bh, &txored);
167 const AVFrame *pict,
int *got_packet)
170 const AVFrame *
const p = pict;
175 int work_size = 0, pkt_size;
179 keyframe = !
c->curfrm;
181 if(
c->curfrm ==
c->keyint)
183 #if FF_API_CODED_FRAME
191 chpal = !keyframe && palptr && memcmp(palptr,
c->pal2, 1024);
197 for(
i = 0;
i < 256;
i++){
199 c->work_buf[work_size++] = tpal[0] ^
c->pal[
i * 3 + 0];
200 c->work_buf[work_size++] = tpal[1] ^
c->pal[
i * 3 + 1];
201 c->work_buf[work_size++] = tpal[2] ^
c->pal[
i * 3 + 2];
202 c->pal[
i * 3 + 0] = tpal[0];
203 c->pal[
i * 3 + 1] = tpal[1];
204 c->pal[
i * 3 + 2] = tpal[2];
206 memcpy(
c->pal2, palptr, 1024);
210 for(
i = 0;
i < 256;
i++){
213 memcpy(
c->work_buf,
c->pal, 768);
214 memcpy(
c->pal2, palptr, 1024);
218 memcpy(
c->work_buf + work_size,
src, avctx->
width *
c->bypp);
220 work_size += avctx->
width *
c->bypp;
223 int x, y, bh2, bw2, xored;
230 mv =
c->work_buf + work_size;
231 memset(
c->work_buf + work_size, 0, (bw * bh * 2 + 3) & ~3);
232 work_size += (bw * bh * 2 + 3) & ~3;
239 tsrc =
src +
x *
c->bypp;
240 tprev = prev +
x *
c->bypp;
243 mv[0] = (mx * 2) | !!xored;
245 tprev += mx *
c->bypp + my *
c->pstride;
247 for(j = 0; j < bh2; j++){
248 for(
i = 0;
i < bw2 *
c->bypp;
i++)
249 c->work_buf[work_size++] = tsrc[
i] ^ tprev[
i];
263 memcpy(prev,
src, avctx->
width *
c->bypp);
269 deflateReset(&
c->zstream);
271 c->zstream.next_in =
c->work_buf;
272 c->zstream.avail_in = work_size;
273 c->zstream.total_in = 0;
275 c->zstream.next_out =
c->comp_buf;
276 c->zstream.avail_out =
c->comp_size;
277 c->zstream.total_out = 0;
278 if(
deflate(&
c->zstream, Z_SYNC_FLUSH) != Z_OK){
283 pkt_size =
c->zstream.total_out + 1 + 6*keyframe;
298 memcpy(buf,
c->comp_buf,
c->zstream.total_out);
313 deflateEnd(&
c->zstream);
328 int prev_size, prev_offset;
343 #ifdef ZMBV_ENABLE_24BPP
348 #endif //ZMBV_ENABLE_24BPP
371 c->lrange =
c->urange = 8;
379 if(lvl < 0 || lvl > 9){
385 memset(&
c->zstream, 0,
sizeof(z_stream));
386 c->comp_size = avctx->
width *
c->bypp * avctx->
height + 1024 +
393 c->comp_size =
c->comp_size + ((
c->comp_size + 7) >> 3) +
394 ((
c->comp_size + 63) >> 6) + 11;
411 prev_size =
FFALIGN(
c->lrange *
c->bypp, 16) +
c->pstride * (
c->lrange + avctx->
height +
c->urange);
412 prev_offset =
FFALIGN(
c->lrange *
c->bypp, 16) +
c->pstride *
c->lrange;
417 c->prev =
c->prev_buf + prev_offset;
419 c->zstream.zalloc = Z_NULL;
420 c->zstream.zfree = Z_NULL;
421 c->zstream.opaque = Z_NULL;
422 zret = deflateInit(&
c->zstream, lvl);
443 #ifdef ZMBV_ENABLE_24BPP
445 #endif //ZMBV_ENABLE_24BPP
#define FF_ENABLE_DEPRECATION_WARNINGS
AVPixelFormat
Pixel format.
int keyint_min
minimum GOP size
static av_cold int init(AVCodecContext *avctx)
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
static const int8_t mv[256][2]
This structure describes decoded (raw) audio or video data.
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
static av_cold int encode_end(AVCodecContext *avctx)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo x
int key_frame
1 -> keyframe, 0-> not
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static av_cold int encode_init(AVCodecContext *avctx)
Init zmbv encoder.
static enum AVPixelFormat pix_fmts[]
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
@ AV_PIX_FMT_RGB565LE
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
@ AV_PICTURE_TYPE_I
Intra.
static void deflate(uint8_t *dst, const uint8_t *p1, int width, int threshold, const uint8_t *coordinates[], int coord, int maxc)
@ AV_PIX_FMT_BGR0
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
enum AVPictureType pict_type
Picture type of the frame.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
int me_range
maximum motion estimation search range in subpel units If 0 then no limit.
static int zmbv_me(ZmbvEncContext *c, uint8_t *src, int sstride, uint8_t *prev, int pstride, int x, int y, int *mx, int *my, int *xored)
Motion estimation function TODO make better ME decisions.
int flags
A combination of AV_PKT_FLAG values.
#define AV_LOG_INFO
Standard information.
@ AV_PIX_FMT_RGB555LE
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), little-endian, X=unused/undefined
#define i(width, name, range_min, range_max)
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
const char * name
Name of the codec implementation.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
main external API structure.
#define FF_DISABLE_DEPRECATION_WARNINGS
@ AV_PICTURE_TYPE_P
Predicted.
This structure stores compressed data.
int width
picture width / height.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
static int block_cmp(ZmbvEncContext *c, uint8_t *src, int stride, uint8_t *src2, int stride2, int bw, int bh, int *xored)
Block comparing function XXX should be optimized and moved to DSPContext.
int score_tab[ZMBV_BLOCK *ZMBV_BLOCK *4+1]