Go to the documentation of this file.
30 #define UNCHECKED_BITSTREAM_READER 1
77 #define DNXHD_VLC_BITS 9
78 #define DNXHD_DC_VLC_BITS 7
133 ctx->cid_table->ac_bits, 1, 1,
134 ctx->cid_table->ac_codes, 2, 2, 0);
136 ctx->cid_table->dc_bits, 1, 1,
137 ctx->cid_table->dc_codes, 1, 1, 0);
139 ctx->cid_table->run_bits, 1, 1,
140 ctx->cid_table->run_codes, 2, 2, 0);
169 int old_bit_depth =
ctx->bit_depth, bitdepth;
170 uint64_t header_prefix;
173 "buffer too small (%d < 640).\n",
buf_size);
178 if (header_prefix == 0) {
180 "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
185 ctx->cur_field =
buf[5] & 1;
186 frame->interlaced_frame = 1;
189 "interlaced %d, cur field %d\n",
buf[5] & 3,
ctx->cur_field);
193 ctx->mbaff = (
buf[0x6] >> 5) & 1;
194 ctx->alpha =
buf[0x7] & 1;
195 ctx->lla = (
buf[0x7] >> 1) & 1;
202 switch(
buf[0x21] >> 5) {
203 case 1: bitdepth = 8;
break;
204 case 2: bitdepth = 10;
break;
205 case 3: bitdepth = 12;
break;
208 "Unknown bitdepth indicator (%d)\n",
buf[0x21] >> 5);
218 if (
ctx->mbaff &&
ctx->cid_table->cid != 1260)
220 "Adaptive MB interlace flag in an unsupported profile.\n");
222 switch ((
buf[0x2C] >> 1) & 3) {
230 if (
ctx->act &&
ctx->cid_table->cid != 1256 &&
ctx->cid_table->cid != 1270)
232 "Adaptive color transform in an unsupported profile.\n");
234 ctx->is_444 = (
buf[0x2C] >> 6) & 1;
239 }
else if (bitdepth == 10) {
248 }
else if (bitdepth == 12) {
251 }
else if (bitdepth == 10) {
262 ctx->avctx->bits_per_raw_sample =
ctx->bit_depth = bitdepth;
263 if (
ctx->bit_depth != old_bit_depth) {
272 if (
ctx->width !=
ctx->cid_table->width &&
275 &
ctx->avctx->sample_aspect_ratio.den,
276 ctx->width,
ctx->cid_table->width, 255);
277 ctx->width =
ctx->cid_table->width;
286 ctx->mb_width = (
ctx->width + 15)>> 4;
289 if ((
ctx->height + 15) >> 4 ==
ctx->mb_height &&
frame->interlaced_frame)
293 ctx->width,
ctx->height,
ctx->is_444 ?
"4:4" :
"2:2",
298 ctx->data_offset = 0x170 + (
ctx->mb_height << 2);
300 if (
ctx->mb_height > 68) {
302 "mb height too big: %d\n",
ctx->mb_height);
305 ctx->data_offset = 0x280;
307 if ((
ctx->mb_height <<
frame->interlaced_frame) > (
ctx->height + 15) >> 4) {
309 "mb height too big: %d\n",
ctx->mb_height);
315 "buffer too small (%d < %d).\n",
buf_size,
ctx->data_offset);
325 for (
i = 0;
i <
ctx->mb_height;
i++) {
327 ff_dlog(
ctx->avctx,
"mb scan index %d, pos %d: %"PRIu32
"\n",
328 i, 0x170 + (
i << 2),
ctx->mb_scan_index[
i]);
331 "invalid mb scan index (%"PRIu32
" vs %u).\n",
349 int level, component, sign;
352 const uint8_t *ac_info =
ctx->cid_table->ac_info;
354 const int eob_index =
ctx->cid_table->eob_index;
362 component = 1 + (n & 1);
364 weight_matrix =
ctx->cid_table->chroma_weight;
368 weight_matrix =
ctx->cid_table->luma_weight;
371 component = (n >> 1) % 3;
374 weight_matrix =
ctx->cid_table->chroma_weight;
377 weight_matrix =
ctx->cid_table->luma_weight;
402 while (index1 != eob_index) {
403 level = ac_info[2*index1+0];
404 flags = ac_info[2*index1+1];
418 i +=
ctx->cid_table->run[index2];
427 j =
ctx->scantable.permutated[
i];
430 if (level_bias < 32 || weight_matrix[
i] != level_bias)
432 level >>= level_shift;
479 int dct_linesize_luma =
frame->linesize[0];
480 int dct_linesize_chroma =
frame->linesize[1];
481 uint8_t *dest_y, *dest_u, *dest_v;
482 int dct_y_offset, dct_x_offset;
484 int interlaced_mb = 0;
495 static int act_warned;
499 "ACT flag set, in violation of frame header.\n");
501 }
else if (row->
format == -1) {
509 for (
i = 0;
i < 64;
i++) {
516 for (
i = 0;
i < 8 + 4 *
ctx->is_444;
i++) {
517 if (
ctx->decode_dct_block(
ctx, row,
i) < 0)
521 if (
frame->interlaced_frame) {
522 dct_linesize_luma <<= 1;
523 dct_linesize_chroma <<= 1;
526 dest_y =
frame->data[0] + ((y * dct_linesize_luma) << 4) + (
x << (4 +
shift1));
527 dest_u =
frame->data[1] + ((y * dct_linesize_chroma) << 4) + (
x << (3 +
shift1 +
ctx->is_444));
528 dest_v =
frame->data[2] + ((y * dct_linesize_chroma) << 4) + (
x << (3 +
shift1 +
ctx->is_444));
530 if (
frame->interlaced_frame &&
ctx->cur_field) {
531 dest_y +=
frame->linesize[0];
532 dest_u +=
frame->linesize[1];
533 dest_v +=
frame->linesize[2];
536 dct_linesize_luma <<= 1;
537 dct_linesize_chroma <<= 1;
540 dct_y_offset = interlaced_mb ?
frame->linesize[0] : (dct_linesize_luma << 3);
541 dct_x_offset = 8 <<
shift1;
543 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->
blocks[0]);
544 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->
blocks[1]);
545 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->
blocks[4]);
546 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->
blocks[5]);
549 dct_y_offset = interlaced_mb ?
frame->linesize[1] : (dct_linesize_chroma << 3);
550 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->
blocks[2]);
551 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->
blocks[3]);
552 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->
blocks[6]);
553 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->
blocks[7]);
556 ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->
blocks[0]);
557 ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->
blocks[1]);
558 ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->
blocks[6]);
559 ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->
blocks[7]);
562 dct_y_offset = interlaced_mb ?
frame->linesize[1] : (dct_linesize_chroma << 3);
563 ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->
blocks[2]);
564 ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->
blocks[3]);
565 ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->
blocks[8]);
566 ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->
blocks[9]);
567 ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->
blocks[4]);
568 ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->
blocks[5]);
569 ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->
blocks[10]);
570 ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->
blocks[11]);
578 int rownb,
int threadnb)
581 uint32_t
offset =
ctx->mb_scan_index[rownb];
593 for (
x = 0;
x <
ctx->mb_width;
x++) {
618 ctx->rows[
i].format = -1;
653 buf +=
ctx->cid_table->coding_unit_size;
656 goto decode_coding_unit;
662 ctx->rows[
i].errors = 0;
666 static int act_warned;
670 ctx->rows[
i].format != -1 ) {
681 "Unsupported: variable ACT flag.\n");
685 ctx->pix_fmt =
ctx->bit_depth==10
689 ctx->pix_fmt =
ctx->bit_depth==10
static void error(const char *err)
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
#define AV_LOG_WARNING
Something somehow does not look correct.
av_cold void ff_init_scantable(uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable)
AVPixelFormat
Pixel format.
static av_always_inline uint64_t ff_dnxhd_check_header_prefix_hr(uint64_t prefix)
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
enum AVColorSpace colorspace
YUV colorspace type.
#define GET_VLC(code, name, gb, table, bits, max_depth)
If the vlc code is invalid and max_depth=1, then no bits will be removed.
This structure describes decoded (raw) audio or video data.
#define init_vlc(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, codes, codes_wrap, codes_size, flags)
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
#define AV_LOG_VERBOSE
Detailed information.
#define UPDATE_CACHE(name, gb)
@ AVCOL_SPC_BT2020_CL
ITU-R BT2020 constant luminance system.
static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame, const uint8_t *buf, int buf_size, int first_field)
unsigned int coding_unit_size
uint32_t mb_scan_index[512]
#define GET_CACHE(name, gb)
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
int cur_field
current interlaced field
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
#define AV_PIX_FMT_GBRP10
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call have so the codec calls ff_thread_report set FF_CODEC_CAP_ALLOCATE_PROGRESS in AVCodec caps_internal and use ff_thread_get_buffer() to allocate frames. The frames must then be freed with ff_thread_release_buffer(). Otherwise decode directly into the user-supplied frames. Call ff_thread_report_progress() after some part of the current picture has decoded. A good place to put this is where draw_horiz_band() is called - add this if it isn 't called anywhere
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
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
#define FF_PROFILE_DNXHR_LB
#define AV_PIX_FMT_YUV444P10
#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.
#define CLOSE_READER(name, gb)
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
static int dnxhd_get_profile(int cid)
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
int flags
Flags modifying the (de)muxer behaviour.
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 format(the sample packing is implied by the sample format) and sample rate. The lists are not just lists
#define SHOW_SBITS(name, gb, num)
#define DNXHD_DC_VLC_BITS
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
#define SKIP_BITS(name, gb, num)
void ff_free_vlc(VLC *vlc)
const AVProfile ff_dnxhd_profiles[]
#define FF_PROFILE_DNXHR_HQ
const CIDEntry ff_dnxhd_cid_table[]
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx, RowContext *row, int n)
#define DNXHD_VARIABLE
Indicate that a CIDEntry value must be read in the bitstream.
@ AV_PICTURE_TYPE_I
Intra.
static unsigned int get_bits1(GetBitContext *s)
#define LAST_SKIP_BITS(name, gb, num)
#define AV_PIX_FMT_YUV422P10
int ff_dnxhd_get_cid_table(int cid)
static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
int format
-1:not set yet 0:off=RGB 1:on=YUV 2:variable
static const int shift1[6]
enum AVPictureType pict_type
Picture type of the frame.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx, RowContext *row, int n, int index_bits, int level_bias, int level_shift, int dc_shift)
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV444P12
#define OPEN_READER(name, gb)
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
int64_t cid
compression id
#define DECLARE_ALIGNED(n, t, v)
int interlaced_frame
The content of the picture is interlaced.
int(* decode_dct_block)(const struct DNXHDContext *ctx, RowContext *row, int n)
#define FF_PROFILE_DNXHR_SQ
#define i(width, name, range_min, range_max)
@ AVCOL_SPC_BT2020_NCL
ITU-R BT2020 non-constant luminance system.
#define AV_PIX_FMT_GBRP12
av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx)
const char * name
Name of the codec implementation.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
enum AVPixelFormat pix_fmt
const uint8_t ff_zigzag_direct[64]
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 av_always_inline uint64_t ff_dnxhd_parse_header_prefix(const uint8_t *buf)
#define FF_ARRAY_ELEMS(a)
main external API structure.
#define SHOW_UBITS(name, gb, num)
static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
static const AVProfile profiles[]
#define FF_PROFILE_DNXHR_HQX
int coded_width
Bitstream width / height, may be different from width/height e.g.
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
#define avpriv_request_sample(...)
This structure stores compressed data.
static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, AVFrame *frame, int x, int y)
#define FF_PROFILE_DNXHR_444
int width
picture width / height.
static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx, RowContext *row, int n)
#define flags(name, subs,...)
static int dnxhd_decode_row(AVCodecContext *avctx, void *data, int rownb, int threadnb)
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.
av_cold void ff_blockdsp_init(BlockDSPContext *c, AVCodecContext *avctx)
@ AVCOL_SPC_BT709
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
static int first_field(const struct video_data *s)
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx, RowContext *row, int n)
const CIDEntry * cid_table
static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx, RowContext *row, int n)
int(* execute2)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count)
The codec may call this to execute several independent things.
static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx, RowContext *row, int n)
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.