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38 #define ZMBV_KEYFRAME 1
39 #define ZMBV_DELTAPAL 2
87 int d, dx, dy, bw2, bh2;
96 for (
i = 0;
i < 768;
i++)
101 src += ((
c->bx *
c->by * 2 + 3) & ~3);
104 for (y = 0; y <
c->height; y +=
c->bh) {
105 bh2 = ((
c->height - y) >
c->bh) ?
c->bh : (
c->height - y);
106 for (
x = 0;
x <
c->width;
x +=
c->bw) {
110 dx = mvec[
block] >> 1;
111 dy = mvec[
block + 1] >> 1;
114 bw2 = ((
c->width -
x) >
c->bw) ?
c->bw : (
c->width -
x);
118 tprev =
prev +
x + dx + dy *
c->width;
121 for (j = 0; j < bh2; j++) {
122 if (my + j < 0 || my + j >=
c->height) {
124 }
else if (mx >= 0 && mx + bw2 <= c->
width){
125 memcpy(
out, tprev,
sizeof(*
out) * bw2);
127 for (
i = 0;
i < bw2;
i++) {
128 if (mx + i < 0 || mx + i >=
c->width)
140 for (j = 0; j < bh2; j++) {
141 for (
i = 0;
i < bw2;
i++)
150 if (
src -
c->decomp_buf !=
c->decomp_len)
152 src-
c->decomp_buf,
c->decomp_len);
166 int d, dx, dy, bw2, bh2;
172 prev = (uint16_t*)
c->prev;
175 src += ((
c->bx *
c->by * 2 + 3) & ~3);
178 for (y = 0; y <
c->height; y +=
c->bh) {
179 bh2 = ((
c->height - y) >
c->bh) ?
c->bh : (
c->height - y);
180 for (
x = 0;
x <
c->width;
x +=
c->bw) {
181 uint16_t *
out, *tprev;
184 dx = mvec[
block] >> 1;
185 dy = mvec[
block + 1] >> 1;
188 bw2 = ((
c->width -
x) >
c->bw) ?
c->bw : (
c->width -
x);
192 tprev =
prev +
x + dx + dy *
c->width;
195 for (j = 0; j < bh2; j++) {
196 if (my + j < 0 || my + j >=
c->height) {
197 memset(
out, 0, bw2 * 2);
198 }
else if (mx >= 0 && mx + bw2 <= c->
width){
199 memcpy(
out, tprev,
sizeof(*
out) * bw2);
201 for (
i = 0;
i < bw2;
i++) {
202 if (mx + i < 0 || mx + i >=
c->width)
214 for (j = 0; j < bh2; j++){
215 for (
i = 0;
i < bw2;
i++) {
226 if (
src -
c->decomp_buf !=
c->decomp_len)
228 src-
c->decomp_buf,
c->decomp_len);
232 #ifdef ZMBV_ENABLE_24BPP
243 int d, dx, dy, bw2, bh2;
254 src += ((
c->bx *
c->by * 2 + 3) & ~3);
257 for (y = 0; y <
c->height; y +=
c->bh) {
258 bh2 = ((
c->height - y) >
c->bh) ?
c->bh : (
c->height - y);
259 for (
x = 0;
x <
c->width;
x +=
c->bw) {
263 dx = mvec[
block] >> 1;
264 dy = mvec[
block + 1] >> 1;
267 bw2 = ((
c->width -
x) >
c->bw) ?
c->bw : (
c->width -
x);
274 for (j = 0; j < bh2; j++) {
275 if (my + j < 0 || my + j >=
c->height) {
276 memset(
out, 0, bw2 * 3);
277 }
else if (mx >= 0 && mx + bw2 <= c->
width){
278 memcpy(
out, tprev, 3 * bw2);
280 for (
i = 0;
i < bw2;
i++){
281 if (mx + i < 0 || mx + i >=
c->width) {
286 out[
i * 3 + 0] = tprev[
i * 3 + 0];
287 out[
i * 3 + 1] = tprev[
i * 3 + 1];
288 out[
i * 3 + 2] = tprev[
i * 3 + 2];
298 for (j = 0; j < bh2; j++) {
299 for (
i = 0;
i < bw2;
i++) {
311 if (
src -
c->decomp_buf !=
c->decomp_len)
313 src-
c->decomp_buf,
c->decomp_len);
316 #endif //ZMBV_ENABLE_24BPP
328 int d, dx, dy, bw2, bh2;
334 prev = (uint32_t*)
c->prev;
337 src += ((
c->bx *
c->by * 2 + 3) & ~3);
340 for (y = 0; y <
c->height; y +=
c->bh) {
341 bh2 = ((
c->height - y) >
c->bh) ?
c->bh : (
c->height - y);
342 for (
x = 0;
x <
c->width;
x +=
c->bw) {
343 uint32_t *
out, *tprev;
346 dx = mvec[
block] >> 1;
347 dy = mvec[
block + 1] >> 1;
350 bw2 = ((
c->width -
x) >
c->bw) ?
c->bw : (
c->width -
x);
354 tprev =
prev +
x + dx + dy *
c->width;
357 for (j = 0; j < bh2; j++) {
358 if (my + j < 0 || my + j >=
c->height) {
359 memset(
out, 0, bw2 * 4);
360 }
else if (mx >= 0 && mx + bw2 <= c->
width){
361 memcpy(
out, tprev,
sizeof(*
out) * bw2);
363 for (
i = 0;
i < bw2;
i++){
364 if (mx + i < 0 || mx + i >=
c->width)
376 for (j = 0; j < bh2; j++){
377 for (
i = 0;
i < bw2;
i++) {
388 if (
src -
c->decomp_buf !=
c->decomp_len)
390 src-
c->decomp_buf,
c->decomp_len);
403 memcpy(
c->pal,
src, 768);
407 memcpy(
c->cur,
src,
c->width *
c->height * (
c->bpp / 8));
415 int buf_size = avpkt->
size;
419 int hi_ver, lo_ver,
ret;
438 c->decode_xor =
NULL;
443 "Flags=%X ver=%i.%i comp=%i fmt=%i blk=%ix%i\n",
444 c->flags,hi_ver,lo_ver,
c->comp,
c->fmt,
c->bw,
c->bh);
445 if (hi_ver != 0 || lo_ver != 1) {
449 if (
c->bw == 0 ||
c->bh == 0) {
453 if (
c->comp != 0 &&
c->comp != 1) {
463 c->stride =
c->width;
473 c->stride =
c->width * 2;
475 #ifdef ZMBV_ENABLE_24BPP
478 c->decode_xor = zmbv_decode_xor_24;
480 c->stride =
c->width * 3;
482 #endif //ZMBV_ENABLE_24BPP
487 c->stride =
c->width * 4;
490 c->decode_xor =
NULL;
495 zret = inflateReset(&
c->zstream);
501 if (
c->alloc_bpp <
c->bpp) {
504 c->alloc_bpp =
c->bpp;
506 c->bx = (
c->width +
c->bw - 1) /
c->bw;
507 c->by = (
c->height+
c->bh - 1) /
c->bh;
508 if (!
c->cur || !
c->prev) {
519 expected_size = (
c->bx *
c->by * 2 + 3) & ~3;
523 expected_size += 768;
525 if (!
c->got_keyframe) {
531 if (
c->decomp_size <
len) {
535 memcpy(
c->decomp_buf, buf,
len);
538 c->zstream.total_in =
c->zstream.total_out = 0;
539 c->zstream.next_in = buf;
540 c->zstream.avail_in =
len;
541 c->zstream.next_out =
c->decomp_buf;
542 c->zstream.avail_out =
c->decomp_size;
543 zret =
inflate(&
c->zstream, Z_SYNC_FLUSH);
544 if (zret != Z_OK && zret != Z_STREAM_END) {
548 c->decomp_len =
c->zstream.total_out;
550 if (expected_size >
c->decomp_len ||
559 frame->key_frame = 1;
563 frame->key_frame = 0;
565 if (
c->decomp_len < 2LL * ((
c->width +
c->bw - 1) /
c->bw) * ((
c->height +
c->bh - 1) /
c->bh))
580 for (j = 0; j < 256; j++)
584 #ifdef ZMBV_ENABLE_24BPP
589 c->stride,
c->height);
615 memset(&
c->zstream, 0,
sizeof(z_stream));
626 if (!
c->decomp_buf) {
628 "Can't allocate decompression buffer.\n");
632 c->zstream.zalloc = Z_NULL;
633 c->zstream.zfree = Z_NULL;
634 c->zstream.opaque = Z_NULL;
635 zret = inflateInit(&
c->zstream);
650 inflateEnd(&
c->zstream);
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
#define FFSWAP(type, a, b)
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce output
This structure describes decoded (raw) audio or video data.
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
static void inflate(uint8_t *dst, const uint8_t *p1, int width, int threshold, const uint8_t *coordinates[], int coord, int maxc)
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
static int zmbv_decode_xor_8(ZmbvContext *c)
Decode XOR'ed frame - 8bpp version.
static av_cold int decode_init(AVCodecContext *avctx)
int(* decode_xor)(struct ZmbvContext *c)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
int64_t max_pixels
The number of pixels per image to maximally accept.
#define av_realloc_f(p, o, n)
@ AV_PIX_FMT_RGB565LE
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
#define PTRDIFF_SPECIFIER
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
@ AV_PICTURE_TYPE_I
Intra.
@ 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
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static int zmbv_decode_xor_32(ZmbvContext *c)
Decode XOR'ed frame - 32bpp version.
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
@ 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)
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
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
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_cold int decode_end(AVCodecContext *avctx)
main external API structure.
@ AV_PICTURE_TYPE_P
Predicted.
#define avpriv_request_sample(...)
static int zmbv_decode_xor_16(ZmbvContext *c)
Decode XOR'ed frame - 15bpp and 16bpp version.
This structure stores compressed data.
int width
picture width / height.
static int zmbv_decode_intra(ZmbvContext *c)
Decode intraframe.
The exact code depends on how similar the blocks are and how related they are to the block
#define AVERROR_INVALIDDATA
Invalid data found when processing input.