* 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 Libav.
+ *
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file truemotion1.c
+ * @file
* Duck TrueMotion v1 Video Decoder by
- * Alex Beregszaszi (alex@fsn.hu) and
+ * Alex Beregszaszi and
* Mike Melanson (melanson@pcisys.net)
*
* The TrueMotion v1 decoder presently only decodes 16-bit TM1 data and
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
-#include "common.h"
#include "avcodec.h"
-#include "dsputil.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/internal.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/mem.h"
#include "truemotion1data.h"
typedef struct TrueMotion1Context {
AVCodecContext *avctx;
AVFrame frame;
- AVFrame prev_frame;
- uint8_t *buf;
+ const uint8_t *buf;
int size;
- uint8_t *mb_change_bits;
+ const uint8_t *mb_change_bits;
int mb_change_bits_row_size;
- uint8_t *index_stream;
+ const uint8_t *index_stream;
int index_stream_size;
int flags;
int last_deltaset, last_vectable;
unsigned int *vert_pred;
+ int vert_pred_size;
} TrueMotion1Context;
} comp_types;
/* { valid for metatype }, algorithm, num of deltas, vert res, horiz res */
-static comp_types compression_types[17] = {
+static const comp_types compression_types[17] = {
{ ALGO_NOP, 0, 0, 0 },
{ ALGO_RGB16V, 4, 4, BLOCK_4x4 },
}
}
-#ifdef WORDS_BIGENDIAN
+#if HAVE_BIGENDIAN
static int make_ydt15_entry(int p2, int p1, int16_t *ydt)
#else
static int make_ydt15_entry(int p1, int p2, int16_t *ydt)
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_cdt15_entry(int p2, int p1, int16_t *cdt)
-#else
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;
}
-#ifdef WORDS_BIGENDIAN
+#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)
lo += (lo << 6) + (lo << 11);
hi = ydt[p2];
hi += (hi << 6) + (hi << 11);
- return ((lo + (hi << 16)) << 1);
+ return (lo + (hi << 16)) << 1;
}
-#ifdef WORDS_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);
+ return (lo + (lo << 16)) << 1;
}
-#ifdef WORDS_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);
+ return (lo + (hi << 8) + (hi << 16)) << 1;
}
-#ifdef WORDS_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);
+ return (b+r) << 1;
}
static void gen_vector_table15(TrueMotion1Context *s, const uint8_t *sel_vector_table)
* there was an error while decoding the header */
static int truemotion1_decode_header(TrueMotion1Context *s)
{
- int i;
+ int i, ret;
+ int width_shift = 0;
+ int new_pix_fmt;
struct frame_header header;
- uint8_t header_buffer[128]; /* logical maximum size of the header */
+ uint8_t header_buffer[128] = { 0 }; /* logical maximum size of the header */
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
- * then round up to the nearest byte. */
- s->mb_change_bits_row_size = ((s->avctx->width >> 2) + 7) >> 3;
-
header.header_size = ((s->buf[0] >> 5) | (s->buf[0] << 3)) & 0x7f;
if (s->buf[0] < 0x10)
{
av_log(s->avctx, AV_LOG_ERROR, "invalid header size (%d)\n", s->buf[0]);
- return -1;
+ return AVERROR_INVALIDDATA;
}
/* 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.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, "invalid header type (%d)\n", header.header_type);
- return -1;
+ return AVERROR_INVALIDDATA;
} else if ((header.header_type == 2) || (header.header_type == 3)) {
s->flags = header.flags;
if (!(s->flags & FLAG_INTERFRAME))
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");
- s->w = header.width;
- s->h = header.height;
- s->x = header.xoffset;
- s->y = header.yoffset;
+ av_log_ask_for_sample(s->avctx, "SPRITE frame found.\n");
+ /* FIXME header.width, height, xoffset and yoffset aren't initialized */
+ return AVERROR_PATCHWELCOME;
} else {
s->w = header.xsize;
s->h = header.ysize;
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");
+ av_log_ask_for_sample(s->avctx, "INTERPOLATION selected.\n");
}
}
}
- if (header.compression > 17) {
+ if (header.compression >= 17) {
av_log(s->avctx, AV_LOG_ERROR, "invalid compression type (%d)\n", header.compression);
- return -1;
+ return AVERROR_INVALIDDATA;
}
if ((header.deltaset != s->last_deltaset) ||
if ((header.compression & 1) && header.header_type)
sel_vector_table = pc_tbl2;
else {
- if (header.vectable < 4)
+ if (header.vectable > 0 && header.vectable < 4)
sel_vector_table = tables[header.vectable - 1];
else {
av_log(s->avctx, AV_LOG_ERROR, "invalid vector table id (%d)\n", header.vectable);
- return -1;
+ return AVERROR_INVALIDDATA;
}
}
- // FIXME: where to place this ?!?!
- if (compression_types[header.compression].algorithm == ALGO_RGB24H)
- s->avctx->pix_fmt = PIX_FMT_RGBA32;
- else
- s->avctx->pix_fmt = PIX_FMT_RGB555; // RGB565 is supported aswell
+ if (compression_types[header.compression].algorithm == ALGO_RGB24H) {
+ new_pix_fmt = AV_PIX_FMT_RGB32;
+ width_shift = 1;
+ } else
+ new_pix_fmt = AV_PIX_FMT_RGB555; // RGB565 is supported as well
+
+ s->w >>= width_shift;
+ if ((ret = av_image_check_size(s->w, s->h, 0, s->avctx)) < 0)
+ return ret;
+
+ if (s->w != s->avctx->width || s->h != s->avctx->height ||
+ new_pix_fmt != s->avctx->pix_fmt) {
+ if (s->frame.data[0])
+ s->avctx->release_buffer(s->avctx, &s->frame);
+ s->avctx->sample_aspect_ratio = (AVRational){ 1 << width_shift, 1 };
+ s->avctx->pix_fmt = new_pix_fmt;
+ avcodec_set_dimensions(s->avctx, s->w, s->h);
+ av_fast_malloc(&s->vert_pred, &s->vert_pred_size, s->avctx->width * sizeof(unsigned int));
+ }
+
+ /* 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
+ * then round up to the nearest byte. */
+ s->mb_change_bits_row_size = ((s->avctx->width >> (2 - width_shift)) + 7) >> 3;
if ((header.deltaset != s->last_deltaset) || (header.vectable != s->last_vectable))
{
if (compression_types[header.compression].algorithm == ALGO_RGB24H)
gen_vector_table24(s, sel_vector_table);
else
- if (s->avctx->pix_fmt == PIX_FMT_RGB555)
+ if (s->avctx->pix_fmt == AV_PIX_FMT_RGB555)
gen_vector_table15(s, sel_vector_table);
else
gen_vector_table16(s, sel_vector_table);
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;
// FIXME: it may change ?
// if (avctx->bits_per_sample == 24)
-// avctx->pix_fmt = PIX_FMT_RGB24;
+// avctx->pix_fmt = AV_PIX_FMT_RGB24;
// else
-// avctx->pix_fmt = PIX_FMT_RGB555;
+// avctx->pix_fmt = AV_PIX_FMT_RGB555;
- avctx->has_b_frames = 0;
- s->frame.data[0] = s->prev_frame.data[0] = NULL;
+ 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 int));
+ av_fast_malloc(&s->vert_pred, &s->vert_pred_size, s->avctx->width * sizeof(unsigned int));
return 0;
}
#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;
/* 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++];
/* 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++;
mb_change_bits += s->mb_change_bits_row_size;
current_line += s->frame.linesize[0];
- prev_line += s->prev_frame.linesize[0];
}
}
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;
/* 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++];
/* 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++;
}
}
- pixels_left -= 4;
+ pixels_left -= 2;
}
/* next change row */
mb_change_bits += s->mb_change_bits_row_size;
current_line += s->frame.linesize[0];
- prev_line += s->prev_frame.linesize[0];
}
}
static int truemotion1_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ void *data, int *got_frame,
+ AVPacket *avpkt)
{
- TrueMotion1Context *s = (TrueMotion1Context *)avctx->priv_data;
+ const uint8_t *buf = avpkt->data;
+ int ret, buf_size = avpkt->size;
+ TrueMotion1Context *s = avctx->priv_data;
s->buf = buf;
s->size = buf_size;
- if (truemotion1_decode_header(s) == -1)
- return -1;
+ if ((ret = truemotion1_decode_header(s)) < 0)
+ return ret;
s->frame.reference = 1;
- if (avctx->get_buffer(avctx, &s->frame) < 0) {
+ s->frame.buffer_hints = FF_BUFFER_HINTS_VALID |
+ FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
+ if ((ret = avctx->reget_buffer(avctx, &s->frame)) < 0) {
av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
+ return ret;
}
- /* 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) {
+ if (compression_types[s->compression].algorithm == ALGO_RGB24H) {
truemotion1_decode_24bit(s);
- } else {
+ } 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);
+ *got_frame = 1;
*(AVFrame*)data = s->frame;
/* report that the buffer was completely consumed */
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);
return 0;
}
-AVCodec truemotion1_decoder = {
- "truemotion1",
- CODEC_TYPE_VIDEO,
- CODEC_ID_TRUEMOTION1,
- sizeof(TrueMotion1Context),
- truemotion1_decode_init,
- NULL,
- truemotion1_decode_end,
- truemotion1_decode_frame,
- CODEC_CAP_DR1,
+AVCodec ff_truemotion1_decoder = {
+ .name = "truemotion1",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_TRUEMOTION1,
+ .priv_data_size = sizeof(TrueMotion1Context),
+ .init = truemotion1_decode_init,
+ .close = truemotion1_decode_end,
+ .decode = truemotion1_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Duck TrueMotion 1.0"),
};
projects / ffmpeg / blobdiff