* Duck TrueMotion 1.0 Decoder
* Copyright (C) 2003 Alex Beregszaszi & Mike Melanson
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file truemotion1.c
- * Duck TrueMotion v1 Video Decoder by
- * Alex Beregszaszi (alex@fsn.hu) and
+ * @file libavcodec/truemotion1.c
+ * Duck TrueMotion v1 Video Decoder by
+ * Alex Beregszaszi and
* Mike Melanson (melanson@pcisys.net)
*
* The TrueMotion v1 decoder presently only decodes 16-bit TM1 data and
- * outputs RGB555 data. 24-bit TM1 data is not supported yet.
+ * outputs RGB555 (or RGB565) data. 24-bit TM1 data is not supported yet.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
-#include "common.h"
#include "avcodec.h"
#include "dsputil.h"
#include "truemotion1data.h"
-#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
-
typedef struct TrueMotion1Context {
AVCodecContext *avctx;
AVFrame frame;
- AVFrame prev_frame;
- unsigned char *buf;
+ const uint8_t *buf;
int size;
- unsigned char *mb_change_bits;
+ const uint8_t *mb_change_bits;
int mb_change_bits_row_size;
- unsigned char *index_stream;
+ const uint8_t *index_stream;
int index_stream_size;
int flags;
int x, y, w, h;
-
+
uint32_t y_predictor_table[1024];
uint32_t c_predictor_table[1024];
-
+ uint32_t fat_y_predictor_table[1024];
+ uint32_t fat_c_predictor_table[1024];
+
int compression;
int block_type;
int block_width;
int block_height;
- int16_t *ydt;
- int16_t *cdt;
- int16_t *fat_ydt;
- int16_t *fat_cdt;
-
+ int16_t ydt[8];
+ int16_t cdt[8];
+ int16_t fat_ydt[8];
+ int16_t fat_cdt[8];
+
int last_deltaset, last_vectable;
unsigned int *vert_pred;
typedef struct comp_types {
int algorithm;
- int block_width;
- int block_height;
+ int block_width; // vres
+ int block_height; // hres
int block_type;
} comp_types;
-/* { valid for metatype }, algorithm, num of deltas, horiz res, vert res */
-static comp_types compression_types[17] = {
+/* { valid for metatype }, algorithm, num of deltas, vert res, horiz res */
+static const comp_types compression_types[17] = {
{ ALGO_NOP, 0, 0, 0 },
{ ALGO_RGB16V, 4, 4, BLOCK_4x4 },
if (delta_table_index > 3)
return;
- s->ydt = ydts[delta_table_index];
- s->cdt = cdts[delta_table_index];
- s->fat_ydt = fat_ydts[delta_table_index];
- s->fat_cdt = fat_cdts[delta_table_index];
+ memcpy(s->ydt, ydts[delta_table_index], 8 * sizeof(int16_t));
+ memcpy(s->cdt, cdts[delta_table_index], 8 * sizeof(int16_t));
+ memcpy(s->fat_ydt, fat_ydts[delta_table_index], 8 * sizeof(int16_t));
+ memcpy(s->fat_cdt, fat_cdts[delta_table_index], 8 * sizeof(int16_t));
/* Y skinny deltas need to be halved for some reason; maybe the
* skinny Y deltas should be modified */
}
}
-#ifdef WORDS_BIGENDIAN
-static int make_ydt_entry(int p2, int p1, int16_t *ydt)
+#if HAVE_BIGENDIAN
+static int make_ydt15_entry(int p2, int p1, int16_t *ydt)
#else
-static int make_ydt_entry(int p1, int p2, int16_t *ydt)
+static int make_ydt15_entry(int p1, int p2, int16_t *ydt)
#endif
{
int lo, hi;
-
+
lo = ydt[p1];
lo += (lo << 5) + (lo << 10);
hi = ydt[p2];
hi += (hi << 5) + (hi << 10);
- return ((lo + (hi << 16)) << 1);
+ return (lo + (hi << 16)) << 1;
}
-#ifdef WORDS_BIGENDIAN
-static int make_cdt_entry(int p2, int p1, int16_t *cdt)
+#if HAVE_BIGENDIAN
+static int make_cdt15_entry(int p2, int p1, int16_t *cdt)
#else
-static int make_cdt_entry(int p1, int p2, int16_t *cdt)
+static int make_cdt15_entry(int p1, int p2, int16_t *cdt)
#endif
{
int r, b, lo;
-
+
b = cdt[p2];
r = cdt[p1] << 10;
lo = b + r;
- return ((lo + (lo << 16)) << 1);
+ return (lo + (lo << 16)) << 1;
+}
+
+#if HAVE_BIGENDIAN
+static int make_ydt16_entry(int p2, int p1, int16_t *ydt)
+#else
+static int make_ydt16_entry(int p1, int p2, int16_t *ydt)
+#endif
+{
+ int lo, hi;
+
+ lo = ydt[p1];
+ lo += (lo << 6) + (lo << 11);
+ hi = ydt[p2];
+ hi += (hi << 6) + (hi << 11);
+ return (lo + (hi << 16)) << 1;
+}
+
+#if HAVE_BIGENDIAN
+static int make_cdt16_entry(int p2, int p1, int16_t *cdt)
+#else
+static int make_cdt16_entry(int p1, int p2, int16_t *cdt)
+#endif
+{
+ int r, b, lo;
+
+ b = cdt[p2];
+ r = cdt[p1] << 11;
+ lo = b + r;
+ return (lo + (lo << 16)) << 1;
+}
+
+#if HAVE_BIGENDIAN
+static int make_ydt24_entry(int p2, int p1, int16_t *ydt)
+#else
+static int make_ydt24_entry(int p1, int p2, int16_t *ydt)
+#endif
+{
+ int lo, hi;
+
+ lo = ydt[p1];
+ hi = ydt[p2];
+ return (lo + (hi << 8) + (hi << 16)) << 1;
+}
+
+#if HAVE_BIGENDIAN
+static int make_cdt24_entry(int p2, int p1, int16_t *cdt)
+#else
+static int make_cdt24_entry(int p1, int p2, int16_t *cdt)
+#endif
+{
+ int r, b;
+
+ b = cdt[p2];
+ r = cdt[p1]<<16;
+ return (b+r) << 1;
+}
+
+static void gen_vector_table15(TrueMotion1Context *s, const uint8_t *sel_vector_table)
+{
+ int len, i, j;
+ unsigned char delta_pair;
+
+ for (i = 0; i < 1024; i += 4)
+ {
+ len = *sel_vector_table++ / 2;
+ for (j = 0; j < len; j++)
+ {
+ delta_pair = *sel_vector_table++;
+ s->y_predictor_table[i+j] = 0xfffffffe &
+ make_ydt15_entry(delta_pair >> 4, delta_pair & 0xf, s->ydt);
+ s->c_predictor_table[i+j] = 0xfffffffe &
+ make_cdt15_entry(delta_pair >> 4, delta_pair & 0xf, s->cdt);
+ }
+ s->y_predictor_table[i+(j-1)] |= 1;
+ s->c_predictor_table[i+(j-1)] |= 1;
+ }
}
-static void gen_vector_table(TrueMotion1Context *s, uint8_t *sel_vector_table)
+static void gen_vector_table16(TrueMotion1Context *s, const uint8_t *sel_vector_table)
{
int len, i, j;
unsigned char delta_pair;
-
+
+ for (i = 0; i < 1024; i += 4)
+ {
+ len = *sel_vector_table++ / 2;
+ for (j = 0; j < len; j++)
+ {
+ delta_pair = *sel_vector_table++;
+ s->y_predictor_table[i+j] = 0xfffffffe &
+ make_ydt16_entry(delta_pair >> 4, delta_pair & 0xf, s->ydt);
+ s->c_predictor_table[i+j] = 0xfffffffe &
+ make_cdt16_entry(delta_pair >> 4, delta_pair & 0xf, s->cdt);
+ }
+ s->y_predictor_table[i+(j-1)] |= 1;
+ s->c_predictor_table[i+(j-1)] |= 1;
+ }
+}
+
+static void gen_vector_table24(TrueMotion1Context *s, const uint8_t *sel_vector_table)
+{
+ int len, i, j;
+ unsigned char delta_pair;
+
for (i = 0; i < 1024; i += 4)
{
len = *sel_vector_table++ / 2;
for (j = 0; j < len; j++)
{
delta_pair = *sel_vector_table++;
- s->y_predictor_table[i+j] = 0xfffffffe &
- make_ydt_entry(delta_pair >> 4, delta_pair & 0xf, s->ydt);
- s->c_predictor_table[i+j] = 0xfffffffe &
- make_cdt_entry(delta_pair >> 4, delta_pair & 0xf, s->cdt);
+ s->y_predictor_table[i+j] = 0xfffffffe &
+ make_ydt24_entry(delta_pair >> 4, delta_pair & 0xf, s->ydt);
+ s->c_predictor_table[i+j] = 0xfffffffe &
+ make_cdt24_entry(delta_pair >> 4, delta_pair & 0xf, s->cdt);
+ s->fat_y_predictor_table[i+j] = 0xfffffffe &
+ make_ydt24_entry(delta_pair >> 4, delta_pair & 0xf, s->fat_ydt);
+ s->fat_c_predictor_table[i+j] = 0xfffffffe &
+ make_cdt24_entry(delta_pair >> 4, delta_pair & 0xf, s->fat_cdt);
}
s->y_predictor_table[i+(j-1)] |= 1;
s->c_predictor_table[i+(j-1)] |= 1;
+ s->fat_y_predictor_table[i+(j-1)] |= 1;
+ s->fat_c_predictor_table[i+(j-1)] |= 1;
}
}
/* Returns the number of bytes consumed from the bytestream. Returns -1 if
- * there was an error while decoding the header */
+ * there was an error while decoding the header */
static int truemotion1_decode_header(TrueMotion1Context *s)
{
int i;
struct frame_header header;
uint8_t header_buffer[128]; /* logical maximum size of the header */
- uint8_t *sel_vector_table;
+ const uint8_t *sel_vector_table;
/* There is 1 change bit per 4 pixels, so each change byte represents
* 32 pixels; divide width by 4 to obtain the number of change bits and
header.header_size = ((s->buf[0] >> 5) | (s->buf[0] << 3)) & 0x7f;
if (s->buf[0] < 0x10)
{
- printf("invalid header size\n");
+ av_log(s->avctx, AV_LOG_ERROR, "invalid header size (%d)\n", s->buf[0]);
return -1;
}
/* unscramble the header bytes with a XOR operation */
memset(header_buffer, 0, 128);
for (i = 1; i < header.header_size; i++)
- header_buffer[i - 1] = s->buf[i] ^ s->buf[i + 1];
+ header_buffer[i - 1] = s->buf[i] ^ s->buf[i + 1];
+
header.compression = header_buffer[0];
header.deltaset = header_buffer[1];
header.vectable = header_buffer[2];
- header.ysize = LE_16(&header_buffer[3]);
- header.xsize = LE_16(&header_buffer[5]);
- header.checksum = LE_16(&header_buffer[7]);
+ header.ysize = AV_RL16(&header_buffer[3]);
+ header.xsize = AV_RL16(&header_buffer[5]);
+ header.checksum = AV_RL16(&header_buffer[7]);
header.version = header_buffer[9];
header.header_type = header_buffer[10];
header.flags = header_buffer[11];
{
if (header.header_type > 3)
{
- av_log(s->avctx, AV_LOG_ERROR, "truemotion1: invalid header type\n");
+ av_log(s->avctx, AV_LOG_ERROR, "invalid header type (%d)\n", header.header_type);
return -1;
} else if ((header.header_type == 2) || (header.header_type == 3)) {
s->flags = header.flags;
s->flags = FLAG_KEYFRAME;
} else /* Version 1 */
s->flags = FLAG_KEYFRAME;
-
+
if (s->flags & FLAG_SPRITE) {
+ av_log(s->avctx, AV_LOG_INFO, "SPRITE frame found, please report the sample to the developers\n");
+ /* FIXME header.width, height, xoffset and yoffset aren't initialized */
+#if 0
s->w = header.width;
s->h = header.height;
s->x = header.xoffset;
s->y = header.yoffset;
+#else
+ return -1;
+#endif
} else {
s->w = header.xsize;
s->h = header.ysize;
if (header.header_type < 2) {
if ((s->w < 213) && (s->h >= 176))
+ {
s->flags |= FLAG_INTERPOLATED;
+ av_log(s->avctx, AV_LOG_INFO, "INTERPOLATION selected, please report the sample to the developers\n");
+ }
}
}
- if (header.compression > 17) {
- printf("invalid compression type (%d)\n", header.compression);
+ if (header.compression >= 17) {
+ av_log(s->avctx, AV_LOG_ERROR, "invalid compression type (%d)\n", header.compression);
return -1;
}
-
- if ((header.deltaset != s->last_deltaset) ||
+
+ if ((header.deltaset != s->last_deltaset) ||
(header.vectable != s->last_vectable))
select_delta_tables(s, header.deltaset);
if (header.vectable < 4)
sel_vector_table = tables[header.vectable - 1];
else {
- printf("invalid vector table id (%d)\n", header.vectable);
+ av_log(s->avctx, AV_LOG_ERROR, "invalid vector table id (%d)\n", header.vectable);
return -1;
}
}
+ // FIXME: where to place this ?!?!
+ if (compression_types[header.compression].algorithm == ALGO_RGB24H)
+ s->avctx->pix_fmt = PIX_FMT_RGB32;
+ else
+ s->avctx->pix_fmt = PIX_FMT_RGB555; // RGB565 is supported as well
+
if ((header.deltaset != s->last_deltaset) || (header.vectable != s->last_vectable))
{
if (compression_types[header.compression].algorithm == ALGO_RGB24H)
- {
- printf("24bit compression not yet supported\n");
- }
+ gen_vector_table24(s, sel_vector_table);
else
- gen_vector_table(s, sel_vector_table);
+ if (s->avctx->pix_fmt == PIX_FMT_RGB555)
+ gen_vector_table15(s, sel_vector_table);
+ else
+ gen_vector_table16(s, sel_vector_table);
}
/* set up pointers to the other key data chunks */
s->index_stream = s->mb_change_bits;
} else {
/* one change bit per 4x4 block */
- s->index_stream = s->mb_change_bits +
+ s->index_stream = s->mb_change_bits +
(s->mb_change_bits_row_size * (s->avctx->height >> 2));
}
s->index_stream_size = s->size - (s->index_stream - s->buf);
s->block_height = compression_types[header.compression].block_height;
s->block_type = compression_types[header.compression].block_type;
- return header.header_size;
+ if (s->avctx->debug & FF_DEBUG_PICT_INFO)
+ av_log(s->avctx, AV_LOG_INFO, "tables: %d / %d c:%d %dx%d t:%d %s%s%s%s\n",
+ s->last_deltaset, s->last_vectable, s->compression, s->block_width,
+ s->block_height, s->block_type,
+ s->flags & FLAG_KEYFRAME ? " KEY" : "",
+ s->flags & FLAG_INTERFRAME ? " INTER" : "",
+ s->flags & FLAG_SPRITE ? " SPRITE" : "",
+ s->flags & FLAG_INTERPOLATED ? " INTERPOL" : "");
+
+ return header.header_size;
}
-static int truemotion1_decode_init(AVCodecContext *avctx)
+static av_cold int truemotion1_decode_init(AVCodecContext *avctx)
{
- TrueMotion1Context *s = (TrueMotion1Context *)avctx->priv_data;
+ TrueMotion1Context *s = avctx->priv_data;
s->avctx = avctx;
- avctx->pix_fmt = PIX_FMT_RGB555;
- avctx->has_b_frames = 0;
- s->frame.data[0] = s->prev_frame.data[0] = NULL;
+ // FIXME: it may change ?
+// if (avctx->bits_per_sample == 24)
+// avctx->pix_fmt = PIX_FMT_RGB24;
+// else
+// avctx->pix_fmt = PIX_FMT_RGB555;
+
+ s->frame.data[0] = NULL;
/* there is a vertical predictor for each pixel in a line; each vertical
* predictor is 0 to start with */
- s->vert_pred =
- (unsigned int *)av_malloc(s->avctx->width * sizeof(unsigned short));
+ s->vert_pred =
+ (unsigned int *)av_malloc(s->avctx->width * sizeof(unsigned int));
return 0;
}
+/*
+Block decoding order:
+
+dxi: Y-Y
+dxic: Y-C-Y
+dxic2: Y-C-Y-C
+
+hres,vres,i,i%vres (0 < i < 4)
+2x2 0: 0 dxic2
+2x2 1: 1 dxi
+2x2 2: 0 dxic2
+2x2 3: 1 dxi
+2x4 0: 0 dxic2
+2x4 1: 1 dxi
+2x4 2: 2 dxi
+2x4 3: 3 dxi
+4x2 0: 0 dxic
+4x2 1: 1 dxi
+4x2 2: 0 dxic
+4x2 3: 1 dxi
+4x4 0: 0 dxic
+4x4 1: 1 dxi
+4x4 2: 2 dxi
+4x4 3: 3 dxi
+*/
+
#define GET_NEXT_INDEX() \
{\
if (index_stream_index >= s->index_stream_size) { \
- printf (" help! truemotion1 decoder went out of bounds\n"); \
+ av_log(s->avctx, AV_LOG_INFO, " help! truemotion1 decoder went out of bounds\n"); \
return; \
} \
index = s->index_stream[index_stream_index++] * 4; \
} else \
index++;
+#define APPLY_C_PREDICTOR_24() \
+ predictor_pair = s->c_predictor_table[index]; \
+ horiz_pred += (predictor_pair >> 1); \
+ if (predictor_pair & 1) { \
+ GET_NEXT_INDEX() \
+ if (!index) { \
+ GET_NEXT_INDEX() \
+ predictor_pair = s->fat_c_predictor_table[index]; \
+ horiz_pred += (predictor_pair >> 1); \
+ if (predictor_pair & 1) \
+ GET_NEXT_INDEX() \
+ else \
+ index++; \
+ } \
+ } else \
+ index++;
+
+
#define APPLY_Y_PREDICTOR() \
predictor_pair = s->y_predictor_table[index]; \
horiz_pred += (predictor_pair >> 1); \
} else \
index++;
+#define APPLY_Y_PREDICTOR_24() \
+ predictor_pair = s->y_predictor_table[index]; \
+ horiz_pred += (predictor_pair >> 1); \
+ if (predictor_pair & 1) { \
+ GET_NEXT_INDEX() \
+ if (!index) { \
+ GET_NEXT_INDEX() \
+ predictor_pair = s->fat_y_predictor_table[index]; \
+ horiz_pred += (predictor_pair >> 1); \
+ if (predictor_pair & 1) \
+ GET_NEXT_INDEX() \
+ else \
+ index++; \
+ } \
+ } else \
+ index++;
+
#define OUTPUT_PIXEL_PAIR() \
*current_pixel_pair = *vert_pred + horiz_pred; \
- *vert_pred++ = *current_pixel_pair++; \
- prev_pixel_pair++;
+ *vert_pred++ = *current_pixel_pair++;
static void truemotion1_decode_16bit(TrueMotion1Context *s)
{
unsigned int horiz_pred;
unsigned int *vert_pred;
unsigned int *current_pixel_pair;
- unsigned int *prev_pixel_pair;
unsigned char *current_line = s->frame.data[0];
- unsigned char *prev_line = s->prev_frame.data[0];
int keyframe = s->flags & FLAG_KEYFRAME;
/* these variables are for managing the stream of macroblock change bits */
- unsigned char *mb_change_bits = s->mb_change_bits;
+ const unsigned char *mb_change_bits = s->mb_change_bits;
unsigned char mb_change_byte;
unsigned char mb_change_byte_mask;
int mb_change_index;
int index;
/* clean out the line buffer */
- memset(s->vert_pred, 0, s->avctx->width * sizeof(unsigned short));
+ memset(s->vert_pred, 0, s->avctx->width * sizeof(unsigned int));
GET_NEXT_INDEX();
/* re-init variables for the next line iteration */
horiz_pred = 0;
current_pixel_pair = (unsigned int *)current_line;
- prev_pixel_pair = (unsigned int *)prev_line;
vert_pred = s->vert_pred;
mb_change_index = 0;
mb_change_byte = mb_change_bits[mb_change_index++];
switch (y & 3) {
case 0:
- /* if macroblock width is 2, apply C-Y-C-Y; else
+ /* if macroblock width is 2, apply C-Y-C-Y; else
* apply C-Y-Y */
if (s->block_width == 2) {
APPLY_C_PREDICTOR();
break;
case 2:
- /* this iteration might be C-Y-C-Y, Y-Y, or C-Y-Y
+ /* this iteration might be C-Y-C-Y, Y-Y, or C-Y-Y
* depending on the macroblock type */
if (s->block_type == BLOCK_2x2) {
APPLY_C_PREDICTOR();
} else {
- /* skip (copy) four pixels, but reassign the horizontal
+ /* skip (copy) four pixels, but reassign the horizontal
* predictor */
- *current_pixel_pair = *prev_pixel_pair++;
*vert_pred++ = *current_pixel_pair++;
- *current_pixel_pair = *prev_pixel_pair++;
horiz_pred = *current_pixel_pair - *vert_pred;
*vert_pred++ = *current_pixel_pair++;
-
+
}
if (!keyframe) {
mb_change_bits += s->mb_change_bits_row_size;
current_line += s->frame.linesize[0];
- prev_line += s->prev_frame.linesize[0];
}
}
+static void truemotion1_decode_24bit(TrueMotion1Context *s)
+{
+ int y;
+ int pixels_left; /* remaining pixels on this line */
+ unsigned int predictor_pair;
+ unsigned int horiz_pred;
+ unsigned int *vert_pred;
+ unsigned int *current_pixel_pair;
+ unsigned char *current_line = s->frame.data[0];
+ int keyframe = s->flags & FLAG_KEYFRAME;
+
+ /* these variables are for managing the stream of macroblock change bits */
+ const unsigned char *mb_change_bits = s->mb_change_bits;
+ unsigned char mb_change_byte;
+ unsigned char mb_change_byte_mask;
+ int mb_change_index;
+
+ /* these variables are for managing the main index stream */
+ int index_stream_index = 0; /* yes, the index into the index stream */
+ int index;
+
+ /* clean out the line buffer */
+ memset(s->vert_pred, 0, s->avctx->width * sizeof(unsigned int));
+
+ GET_NEXT_INDEX();
+
+ for (y = 0; y < s->avctx->height; y++) {
+
+ /* re-init variables for the next line iteration */
+ horiz_pred = 0;
+ current_pixel_pair = (unsigned int *)current_line;
+ vert_pred = s->vert_pred;
+ mb_change_index = 0;
+ mb_change_byte = mb_change_bits[mb_change_index++];
+ mb_change_byte_mask = 0x01;
+ pixels_left = s->avctx->width;
+
+ while (pixels_left > 0) {
+
+ if (keyframe || ((mb_change_byte & mb_change_byte_mask) == 0)) {
+
+ switch (y & 3) {
+ case 0:
+ /* if macroblock width is 2, apply C-Y-C-Y; else
+ * apply C-Y-Y */
+ if (s->block_width == 2) {
+ APPLY_C_PREDICTOR_24();
+ APPLY_Y_PREDICTOR_24();
+ OUTPUT_PIXEL_PAIR();
+ APPLY_C_PREDICTOR_24();
+ APPLY_Y_PREDICTOR_24();
+ OUTPUT_PIXEL_PAIR();
+ } else {
+ APPLY_C_PREDICTOR_24();
+ APPLY_Y_PREDICTOR_24();
+ OUTPUT_PIXEL_PAIR();
+ APPLY_Y_PREDICTOR_24();
+ OUTPUT_PIXEL_PAIR();
+ }
+ break;
+
+ case 1:
+ case 3:
+ /* always apply 2 Y predictors on these iterations */
+ APPLY_Y_PREDICTOR_24();
+ OUTPUT_PIXEL_PAIR();
+ APPLY_Y_PREDICTOR_24();
+ OUTPUT_PIXEL_PAIR();
+ break;
+
+ case 2:
+ /* this iteration might be C-Y-C-Y, Y-Y, or C-Y-Y
+ * depending on the macroblock type */
+ if (s->block_type == BLOCK_2x2) {
+ APPLY_C_PREDICTOR_24();
+ APPLY_Y_PREDICTOR_24();
+ OUTPUT_PIXEL_PAIR();
+ APPLY_C_PREDICTOR_24();
+ APPLY_Y_PREDICTOR_24();
+ OUTPUT_PIXEL_PAIR();
+ } else if (s->block_type == BLOCK_4x2) {
+ APPLY_C_PREDICTOR_24();
+ APPLY_Y_PREDICTOR_24();
+ OUTPUT_PIXEL_PAIR();
+ APPLY_Y_PREDICTOR_24();
+ OUTPUT_PIXEL_PAIR();
+ } else {
+ APPLY_Y_PREDICTOR_24();
+ OUTPUT_PIXEL_PAIR();
+ APPLY_Y_PREDICTOR_24();
+ OUTPUT_PIXEL_PAIR();
+ }
+ break;
+ }
+
+ } else {
+
+ /* skip (copy) four pixels, but reassign the horizontal
+ * predictor */
+ *vert_pred++ = *current_pixel_pair++;
+ horiz_pred = *current_pixel_pair - *vert_pred;
+ *vert_pred++ = *current_pixel_pair++;
+
+ }
+
+ if (!keyframe) {
+ mb_change_byte_mask <<= 1;
+
+ /* next byte */
+ if (!mb_change_byte_mask) {
+ mb_change_byte = mb_change_bits[mb_change_index++];
+ mb_change_byte_mask = 0x01;
+ }
+ }
+
+ pixels_left -= 4;
+ }
+
+ /* next change row */
+ if (((y + 1) & 3) == 0)
+ mb_change_bits += s->mb_change_bits_row_size;
+
+ current_line += s->frame.linesize[0];
+ }
+}
+
+
static int truemotion1_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
- TrueMotion1Context *s = (TrueMotion1Context *)avctx->priv_data;
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
+ TrueMotion1Context *s = avctx->priv_data;
s->buf = buf;
s->size = buf_size;
- s->frame.reference = 1;
- if (avctx->get_buffer(avctx, &s->frame) < 0) {
- fprintf(stderr, "truemotion1: get_buffer() failed\n");
+ if (truemotion1_decode_header(s) == -1)
return -1;
- }
-
- /* no supplementary picture */
- if (buf_size == 0)
- return 0;
- *data_size = 0;
-
- if (truemotion1_decode_header(s) == -1)
+ s->frame.reference = 1;
+ s->frame.buffer_hints = FF_BUFFER_HINTS_VALID |
+ FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
+ if (avctx->reget_buffer(avctx, &s->frame) < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
+ }
- /* check for a do-nothing frame and copy the previous frame */
- if (compression_types[s->compression].algorithm == ALGO_NOP)
- {
- memcpy(s->frame.data[0], s->prev_frame.data[0],
- s->frame.linesize[0] * s->avctx->height);
- } else if (compression_types[s->compression].algorithm == ALGO_RGB24H) {
- printf (" 24-bit Duck TrueMotion decoding not yet implemented\n");
- } else {
+ if (compression_types[s->compression].algorithm == ALGO_RGB24H) {
+ truemotion1_decode_24bit(s);
+ } else if (compression_types[s->compression].algorithm != ALGO_NOP) {
truemotion1_decode_16bit(s);
}
- if (s->prev_frame.data[0])
- avctx->release_buffer(avctx, &s->prev_frame);
-
- /* shuffle frames */
- s->prev_frame = s->frame;
-
*data_size = sizeof(AVFrame);
*(AVFrame*)data = s->frame;
return buf_size;
}
-static int truemotion1_decode_end(AVCodecContext *avctx)
+static av_cold int truemotion1_decode_end(AVCodecContext *avctx)
{
- TrueMotion1Context *s = (TrueMotion1Context *)avctx->priv_data;
+ TrueMotion1Context *s = avctx->priv_data;
- /* release the last frame */
- if (s->prev_frame.data[0])
- avctx->release_buffer(avctx, &s->prev_frame);
+ if (s->frame.data[0])
+ avctx->release_buffer(avctx, &s->frame);
av_free(s->vert_pred);
truemotion1_decode_end,
truemotion1_decode_frame,
CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Duck TrueMotion 1.0"),
};
projects / frescor / ffmpeg.git / blobdiff