82 #define FLAG_SPRITE 32 83 #define FLAG_KEYFRAME 16 84 #define FLAG_INTERFRAME 8 85 #define FLAG_INTERPOLATED 4 106 #define ALGO_RGB16V 1 107 #define ALGO_RGB16H 2 108 #define ALGO_RGB24H 3 152 if (delta_table_index > 3)
155 memcpy(s->
ydt,
ydts[delta_table_index], 8 *
sizeof(int16_t));
156 memcpy(s->
cdt,
cdts[delta_table_index], 8 *
sizeof(int16_t));
162 for (i = 0; i < 8; i++)
180 lo += (lo * 32) + (lo * 1024);
182 hi += (hi * 32) + (hi * 1024);
183 return (lo + (hi * (1
U << 16))) * 2;
193 return (lo + (lo * (1
U << 16))) * 2;
205 lo += (lo << 6) + (lo << 11);
207 hi += (hi << 6) + (hi << 11);
208 return (lo + (hi << 16)) << 1;
218 return (lo + (lo * (1 << 16))) * 2;
227 return (lo + (hi * (1 << 8)) + (hi * (1 << 16))) * 2;
235 r = cdt[p1] * (1 << 16);
242 unsigned char delta_pair;
244 for (i = 0; i < 1024; i += 4)
246 len = *sel_vector_table++ / 2;
247 for (j = 0; j <
len; j++)
249 delta_pair = *sel_vector_table++;
263 unsigned char delta_pair;
265 for (i = 0; i < 1024; i += 4)
267 len = *sel_vector_table++ / 2;
268 for (j = 0; j <
len; j++)
270 delta_pair = *sel_vector_table++;
284 unsigned char delta_pair;
286 for (i = 0; i < 1024; i += 4)
288 len = *sel_vector_table++ / 2;
289 for (j = 0; j <
len; j++)
291 delta_pair = *sel_vector_table++;
316 uint8_t header_buffer[128] = { 0 };
317 const uint8_t *sel_vector_table;
320 if (s->
buf[0] < 0x10)
333 header_buffer[i - 1] = s->
buf[i] ^ s->
buf[i + 1];
341 header.
version = header_buffer[9];
343 header.
flags = header_buffer[11];
344 header.
control = header_buffer[12];
370 if ((s->
w < 213) && (s->
h >= 176))
404 s->
w >>= width_shift;
526 #define GET_NEXT_INDEX() \ 528 if (index_stream_index >= s->index_stream_size) { \ 529 av_log(s->avctx, AV_LOG_INFO, " help! truemotion1 decoder went out of bounds\n"); \ 532 index = s->index_stream[index_stream_index++] * 4; \ 537 if (index >= 1023) { \ 538 av_log(s->avctx, AV_LOG_ERROR, "Invalid index value.\n"); \ 544 #define APPLY_C_PREDICTOR() \ 545 predictor_pair = s->c_predictor_table[index]; \ 546 horiz_pred += (predictor_pair >> 1); \ 547 if (predictor_pair & 1) { \ 551 predictor_pair = s->c_predictor_table[index]; \ 552 horiz_pred += ((predictor_pair >> 1) * 5); \ 553 if (predictor_pair & 1) \ 561 #define APPLY_C_PREDICTOR_24() \ 562 predictor_pair = s->c_predictor_table[index]; \ 563 horiz_pred += (predictor_pair >> 1); \ 564 if (predictor_pair & 1) { \ 568 predictor_pair = s->fat_c_predictor_table[index]; \ 569 horiz_pred += (predictor_pair >> 1); \ 570 if (predictor_pair & 1) \ 579 #define APPLY_Y_PREDICTOR() \ 580 predictor_pair = s->y_predictor_table[index]; \ 581 horiz_pred += (predictor_pair >> 1); \ 582 if (predictor_pair & 1) { \ 586 predictor_pair = s->y_predictor_table[index]; \ 587 horiz_pred += ((predictor_pair >> 1) * 5); \ 588 if (predictor_pair & 1) \ 596 #define APPLY_Y_PREDICTOR_24() \ 597 predictor_pair = s->y_predictor_table[index]; \ 598 horiz_pred += (predictor_pair >> 1); \ 599 if (predictor_pair & 1) { \ 603 predictor_pair = s->fat_y_predictor_table[index]; \ 604 horiz_pred += (predictor_pair >> 1); \ 605 if (predictor_pair & 1) \ 613 #define OUTPUT_PIXEL_PAIR() \ 614 *current_pixel_pair = *vert_pred + horiz_pred; \ 615 *vert_pred++ = *current_pixel_pair++; 621 unsigned int predictor_pair;
622 unsigned int horiz_pred;
624 unsigned int *current_pixel_pair;
625 unsigned char *current_line = s->
frame->
data[0];
630 unsigned char mb_change_byte;
631 unsigned char mb_change_byte_mask;
635 int index_stream_index = 0;
647 current_pixel_pair = (
unsigned int *)current_line;
651 mb_change_byte = mb_change_bits[mb_change_index++];
652 mb_change_byte_mask = 0x01;
655 while (pixels_left > 0) {
657 if (keyframe || ((mb_change_byte & mb_change_byte_mask) == 0)) {
717 *vert_pred++ = *current_pixel_pair++;
718 horiz_pred = *current_pixel_pair - *
vert_pred;
719 *vert_pred++ = *current_pixel_pair++;
724 mb_change_byte_mask <<= 1;
727 if (!mb_change_byte_mask) {
728 mb_change_byte = mb_change_bits[mb_change_index++];
729 mb_change_byte_mask = 0x01;
737 if (((y + 1) & 3) == 0)
748 unsigned int predictor_pair;
749 unsigned int horiz_pred;
751 unsigned int *current_pixel_pair;
752 unsigned char *current_line = s->
frame->
data[0];
757 unsigned char mb_change_byte;
758 unsigned char mb_change_byte_mask;
762 int index_stream_index = 0;
774 current_pixel_pair = (
unsigned int *)current_line;
777 mb_change_byte = mb_change_bits[mb_change_index++];
778 mb_change_byte_mask = 0x01;
781 while (pixels_left > 0) {
783 if (keyframe || ((mb_change_byte & mb_change_byte_mask) == 0)) {
843 *vert_pred++ = *current_pixel_pair++;
844 horiz_pred = *current_pixel_pair - *
vert_pred;
845 *vert_pred++ = *current_pixel_pair++;
850 mb_change_byte_mask <<= 1;
853 if (!mb_change_byte_mask) {
854 mb_change_byte = mb_change_bits[mb_change_index++];
855 mb_change_byte_mask = 0x01;
863 if (((y + 1) & 3) == 0)
872 void *
data,
int *got_frame,
876 int ret, buf_size = avpkt->
size;
914 .
name =
"truemotion1",
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static const int16_t *const fat_ydts[]
Memory handling functions.
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.
static av_cold int init(AVCodecContext *avctx)
#define OUTPUT_PIXEL_PAIR()
#define avpriv_request_sample(...)
static void truemotion1_decode_16bit(TrueMotion1Context *s)
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static void gen_vector_table24(TrueMotion1Context *s, const uint8_t *sel_vector_table)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
AVCodec ff_truemotion1_decoder
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
static int truemotion1_decode_header(TrueMotion1Context *s)
const uint8_t * index_stream
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
#define FF_DEBUG_PICT_INFO
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
int mb_change_bits_row_size
int ff_set_sar(AVCodecContext *avctx, AVRational sar)
Check that the provided sample aspect ratio is valid and set it on the codec context.
static av_cold int truemotion1_decode_end(AVCodecContext *avctx)
#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. ...
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Identical in function to ff_get_buffer(), except it reuses the existing buffer if available...
static void truemotion1_decode_24bit(TrueMotion1Context *s)
const char * name
Name of the codec implementation.
static const uint8_t pc_tbl2[]
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer, reusing the given one if large enough.
uint32_t c_predictor_table[1024]
common internal API header
int width
picture width / height.
static int make_ydt15_entry(int p1, int p2, int16_t *ydt)
static int make_cdt24_entry(int p1, int p2, int16_t *cdt)
static const comp_types compression_types[17]
#define APPLY_C_PREDICTOR_24()
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
static int make_ydt24_entry(int p1, int p2, int16_t *ydt)
#define AV_LOG_INFO
Standard information.
static const int16_t *const cdts[]
Libavcodec external API header.
static void gen_vector_table16(TrueMotion1Context *s, const uint8_t *sel_vector_table)
static const int16_t *const ydts[]
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
uint32_t fat_c_predictor_table[1024]
static int make_cdt15_entry(int p1, int p2, int16_t *cdt)
Rational number (pair of numerator and denominator).
static av_cold int truemotion1_decode_init(AVCodecContext *avctx)
static int truemotion1_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Writing a table generator This documentation is preliminary Parts of the API are not good and should be changed Basic concepts A table generator consists of two *_tablegen c and *_tablegen h The h file will provide the variable declarations and initialization code for the tables
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
#define APPLY_Y_PREDICTOR()
#define APPLY_C_PREDICTOR()
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
static int make_ydt16_entry(int p1, int p2, int16_t *ydt)
static void gen_vector_table15(TrueMotion1Context *s, const uint8_t *sel_vector_table)
#define AV_PIX_FMT_RGB555
static int make_cdt16_entry(int p1, int p2, int16_t *cdt)
uint32_t fat_y_predictor_table[1024]
#define xf(width, name, var, range_min, range_max, subs,...)
uint32_t y_predictor_table[1024]
static const int16_t *const fat_cdts[]
static void select_delta_tables(TrueMotion1Context *s, int delta_table_index)
#define APPLY_Y_PREDICTOR_24()
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
const uint8_t * mb_change_bits
#define FLAG_INTERPOLATED
This structure stores compressed data.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
#define AV_PIX_FMT_0RGB32