Go to the documentation of this file.
23 #define BITSTREAM_READER_LE
31 static const int8_t
map_3bit[] = { -4, -3, -2, -1, +1, +2, +3, +4 };
72 s->cols = 1 <<
s->level;
73 s->wrapbuf_len = 2 *
s->cols - 2;
74 s->block_len =
s->rows *
s->cols;
75 s->max_framesize =
s->block_len;
78 s->wrapbuf =
av_calloc(
s->wrapbuf_len,
sizeof(
int));
81 if (!
s->block || !
s->wrapbuf || !
s->ampbuf || !
s->bitstream)
84 s->midbuf =
s->ampbuf + 0x8000;
87 for (x3 = 0; x3 < 3; x3++)
88 for (x2 = 0; x2 < 3; x2++)
89 for (x1 = 0; x1 < 3; x1++)
90 mul_3x3[x1 + x2 * 3 + x3* 3 * 3] = x1 + (x2 << 4) + (x3 << 8);
91 for (x3 = 0; x3 < 5; x3++)
92 for (x2 = 0; x2 < 5; x2++)
93 for (x1 = 0; x1 < 5; x1++)
94 mul_3x5[x1 + x2 * 5 + x3 * 5 * 5] = x1 + (x2 << 4) + (x3 << 8);
95 for (x2 = 0; x2 < 11; x2++)
96 for (x1 = 0; x1 < 11; x1++)
97 mul_2x11[x1 + x2 * 11] = x1 + (x2 << 4);
102 #define set_pos(s, r, c, idx) do { \
103 unsigned pos = ((r) << s->level) + (c); \
104 s->block[pos] = s->midbuf[(idx)]; \
111 for (
i = 0;
i <
s->rows;
i++)
125 int b, middle = 1 << (ind - 1);
127 for (
i = 0;
i <
s->rows;
i++) {
139 for (
i = 0;
i <
s->rows;
i++) {
164 for (
i = 0;
i <
s->rows;
i++) {
182 for (
i = 0;
i <
s->rows;
i++) {
186 if (
i >=
s->rows)
break;
208 for (
i = 0;
i <
s->rows;
i++) {
226 for (
i = 0;
i <
s->rows;
i++) {
260 for (
i = 0;
i <
s->rows;
i++) {
285 for (
i = 0;
i <
s->rows;
i++) {
312 for (
i = 0;
i <
s->rows;
i++) {
331 for (
i = 0;
i <
s->rows;
i++) {
340 n2 = ((
mul_3x3[
b] >> 4) & 0x0F) - 1;
341 n3 = ((
mul_3x3[
b] >> 8) & 0x0F) - 1;
360 for (
i = 0;
i <
s->rows;
i++) {
369 n2 = ((
mul_3x5[
b] >> 4) & 0x0F) - 2;
370 n3 = ((
mul_3x5[
b] >> 8) & 0x0F) - 2;
388 for (
i = 0;
i <
s->rows;
i++) {
426 for (
i = 0;
i <
s->cols;
i++) {
435 static void juggle(
int *wrap_p,
int *block_p,
unsigned sub_len,
unsigned sub_count)
439 unsigned int r0, r1, r2, r3;
441 for (
i = 0;
i < sub_len;
i++) {
445 for (j = 0; j < sub_count/2; j++) {
447 *p = r1 * 2 + (r0 + r2);
450 *p = r2 * 2 - (r1 + r3);
464 unsigned sub_count, sub_len, todo_count, step_subcount,
i;
465 int *wrap_p, *block_p, *p;
475 step_subcount = (2048 >>
s->level) - 2;
481 todo_count =
s->rows;
485 sub_count = step_subcount;
486 if (sub_count > todo_count)
487 sub_count = todo_count;
489 sub_len =
s->cols / 2;
492 juggle(wrap_p, block_p, sub_len, sub_count);
493 wrap_p += sub_len * 2;
495 for (
i = 0, p = block_p;
i < sub_count;
i++) {
500 while (sub_len > 1) {
503 juggle(wrap_p, block_p, sub_len, sub_count);
504 wrap_p += sub_len * 2;
507 if (todo_count <= step_subcount)
510 todo_count -= step_subcount;
511 block_p += step_subcount <<
s->level;
525 for (
i = 0,
x = 0;
i < count;
i++) {
530 for (
i = 1,
x = -
val;
i <= count;
i++) {
552 int ret, n, buf_size, input_buf_size;
554 if (!
pkt->
size && !
s->bitstream_size) {
559 buf_size =
FFMIN(
pkt->
size,
s->max_framesize -
s->bitstream_size);
560 input_buf_size = buf_size;
561 if (
s->bitstream_index +
s->bitstream_size + buf_size >
s->max_framesize) {
562 memmove(
s->bitstream, &
s->bitstream[
s->bitstream_index],
s->bitstream_size);
563 s->bitstream_index = 0;
566 memcpy(&
s->bitstream[
s->bitstream_index +
s->bitstream_size],
pkt->
data, buf_size);
567 buf = &
s->bitstream[
s->bitstream_index];
568 buf_size +=
s->bitstream_size;
569 s->bitstream_size = buf_size;
570 if (buf_size < s->max_framesize &&
pkt->
data) {
572 return input_buf_size;
589 int val =
s->block[n] >>
s->level;
597 if (n > buf_size &&
pkt->
data) {
598 s->bitstream_size = 0;
599 s->bitstream_index = 0;
603 if (
s->bitstream_size) {
604 s->bitstream_index += n;
605 s->bitstream_size -= n;
606 return input_buf_size;
619 s->bitstream_size = 0;
625 .
name =
"interplayacm",
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 int k45(InterplayACMContext *s, unsigned ind, unsigned col)
@ AV_CODEC_ID_INTERPLAY_ACM
static int get_bits_count(const GetBitContext *s)
This structure describes decoded (raw) audio or video data.
static int decode_block(InterplayACMContext *s)
static const int8_t map_2bit_near[]
static int linear(InterplayACMContext *s, unsigned ind, unsigned col)
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 samples
static void skip_bits(GetBitContext *s, int n)
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
static const int8_t map_2bit_far[]
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 double val(void *priv, double ch)
static int mul_3x5[5 *5 *5]
#define set_pos(s, r, c, idx)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
static int k44(InterplayACMContext *s, unsigned ind, unsigned col)
static int t15(InterplayACMContext *s, unsigned ind, unsigned col)
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *pkt)
static int k35(InterplayACMContext *s, unsigned ind, unsigned col)
static int k34(InterplayACMContext *s, unsigned ind, unsigned col)
static av_cold int decode_init(AVCodecContext *avctx)
static int mul_2x11[11 *11]
static int k12(InterplayACMContext *s, unsigned ind, unsigned col)
static av_cold int decode_close(AVCodecContext *avctx)
static unsigned int get_bits1(GetBitContext *s)
AVCodec ff_interplay_acm_decoder
static void juggle_block(InterplayACMContext *s)
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 void juggle(int *wrap_p, int *block_p, unsigned sub_len, unsigned sub_count)
enum AVSampleFormat sample_fmt
audio sample format
static const filler filler_list[]
static int t27(InterplayACMContext *s, unsigned ind, unsigned col)
static int zero(InterplayACMContext *s, unsigned ind, unsigned col)
int channels
number of audio channels
#define i(width, name, range_min, range_max)
static int k23(InterplayACMContext *s, unsigned ind, unsigned col)
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
static const int8_t map_1bit[]
@ AV_SAMPLE_FMT_S16
signed 16 bits
const char * name
Name of the codec implementation.
static int fill_block(InterplayACMContext *s)
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
#define AV_INPUT_BUFFER_PADDING_SIZE
static int t37(InterplayACMContext *s, unsigned ind, unsigned col)
main external API structure.
void * av_calloc(size_t nmemb, size_t size)
Non-inlined equivalent of av_mallocz_array().
static int k13(InterplayACMContext *s, unsigned ind, unsigned col)
int(* filler)(InterplayACMContext *s, unsigned ind, unsigned col)
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
static int mul_3x3[3 *3 *3]
static int bad(InterplayACMContext *s, unsigned ind, unsigned col)
This structure stores compressed data.
static const int8_t map_3bit[]
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static int k24(InterplayACMContext *s, unsigned ind, unsigned col)