/*
- * PSX MDEC codec
+ * Sony PlayStation MDEC (Motion DECoder)
* Copyright (c) 2003 Michael Niedermayer
*
- * This library is free software; you can redistribute it and/or
+ * based upon code from Sebastian Jedruszkiewicz <elf@frogger.rules.pl>
+ *
+ * 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
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * based upon code from Sebastian Jedruszkiewicz <elf@frogger.rules.pl>
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-
+
/**
- * @file mdec.c
- * PSX MDEC codec.
- * This is very similar to intra only MPEG1.
+ * @file
+ * Sony PlayStation MDEC (Motion DECoder)
+ * This is very similar to intra-only MPEG-1.
*/
-
-#include "avcodec.h"
-#include "dsputil.h"
-#include "mpegvideo.h"
-//#undef NDEBUG
-//#include <assert.h>
+#include "avcodec.h"
+#include "blockdsp.h"
+#include "idctdsp.h"
+#include "mpeg12.h"
+#include "thread.h"
-typedef struct MDECContext{
+typedef struct MDECContext {
AVCodecContext *avctx;
- DSPContext dsp;
- AVFrame picture;
- PutBitContext pb;
+ BlockDSPContext bdsp;
+ IDCTDSPContext idsp;
+ ThreadFrame frame;
GetBitContext gb;
ScanTable scantable;
int version;
int mb_width;
int mb_height;
int mb_x, mb_y;
- DCTELEM __align8 block[6][64];
- uint16_t __align8 intra_matrix[64];
- int __align8 q_intra_matrix[64];
+ DECLARE_ALIGNED(16, int16_t, block)[6][64];
uint8_t *bitstream_buffer;
- int bitstream_buffer_size;
+ unsigned int bitstream_buffer_size;
int block_last_index[6];
} MDECContext;
-//very similar to mpeg1
-static inline int mdec_decode_block_intra(MDECContext *a, DCTELEM *block, int n)
+//very similar to MPEG-1
+static inline int mdec_decode_block_intra(MDECContext *a, int16_t *block, int n)
{
int level, diff, i, j, run;
int component;
- RLTable *rl = &rl_mpeg1;
- uint8_t * const scantable= a->scantable.permutated;
- const uint16_t *quant_matrix= ff_mpeg1_default_intra_matrix;
- const int qscale= a->qscale;
-
- /* DC coef */
- if(a->version==2){
- block[0]= get_sbits(&a->gb, 11);
- }else{
+ RLTable *rl = &ff_rl_mpeg1;
+ uint8_t * const scantable = a->scantable.permutated;
+ const uint16_t *quant_matrix = ff_mpeg1_default_intra_matrix;
+ const int qscale = a->qscale;
+
+ /* DC coefficient */
+ if (a->version == 2) {
+ block[0] = 2 * get_sbits(&a->gb, 10) + 1024;
+ } else {
component = (n <= 3 ? 0 : n - 4 + 1);
diff = decode_dc(&a->gb, component);
if (diff >= 0xffff)
- return -1;
- a->last_dc[component]+= diff;
- block[0] = a->last_dc[component]<<3;
+ return AVERROR_INVALIDDATA;
+ a->last_dc[component] += diff;
+ block[0] = a->last_dc[component] << 3;
}
-
+
i = 0;
{
- OPEN_READER(re, &a->gb);
- /* now quantify & encode AC coefs */
- for(;;) {
+ OPEN_READER(re, &a->gb);
+ /* now quantify & encode AC coefficients */
+ for (;;) {
UPDATE_CACHE(re, &a->gb);
- GET_RL_VLC(level, run, re, &a->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2);
-
- if(level == 127){
+ GET_RL_VLC(level, run, re, &a->gb, rl->rl_vlc[0], TEX_VLC_BITS, 2, 0);
+
+ if (level == 127) {
break;
- } else if(level != 0) {
+ } else if (level != 0) {
i += run;
- j = scantable[i];
- level= (level*qscale*quant_matrix[j])>>3;
- level= (level-1)|1;
+ if (i > 63) {
+ av_log(a->avctx, AV_LOG_ERROR,
+ "ac-tex damaged at %d %d\n", a->mb_x, a->mb_y);
+ return AVERROR_INVALIDDATA;
+ }
+ j = scantable[i];
+ level = (level * qscale * quant_matrix[j]) >> 3;
level = (level ^ SHOW_SBITS(re, &a->gb, 1)) - SHOW_SBITS(re, &a->gb, 1);
LAST_SKIP_BITS(re, &a->gb, 1);
} else {
/* escape */
run = SHOW_UBITS(re, &a->gb, 6)+1; LAST_SKIP_BITS(re, &a->gb, 6);
UPDATE_CACHE(re, &a->gb);
- level = SHOW_SBITS(re, &a->gb, 8); SKIP_BITS(re, &a->gb, 8);
- if (level == -128) {
- level = SHOW_UBITS(re, &a->gb, 8) - 256; LAST_SKIP_BITS(re, &a->gb, 8);
- } else if (level == 0) {
- level = SHOW_UBITS(re, &a->gb, 8) ; LAST_SKIP_BITS(re, &a->gb, 8);
- }
+ level = SHOW_SBITS(re, &a->gb, 10); SKIP_BITS(re, &a->gb, 10);
i += run;
+ if (i > 63) {
+ av_log(a->avctx, AV_LOG_ERROR,
+ "ac-tex damaged at %d %d\n", a->mb_x, a->mb_y);
+ return AVERROR_INVALIDDATA;
+ }
j = scantable[i];
-/* if(level<0){
- level= -level;
- level= (level*qscale*quant_matrix[j])>>4;
- level= (level-1)|1;
- level= -level;
- }else{*/
- level= (level*qscale*quant_matrix[j])>>4;
-/* level= (level-1)|1;
- }*/
- }
- if (i > 63){
- fprintf(stderr, "ac-tex damaged at %d %d\n", a->mb_x, a->mb_y);
- return -1;
+ if (level < 0) {
+ level = -level;
+ level = (level * qscale * quant_matrix[j]) >> 3;
+ level = (level - 1) | 1;
+ level = -level;
+ } else {
+ level = (level * qscale * quant_matrix[j]) >> 3;
+ level = (level - 1) | 1;
+ }
}
block[j] = level;
return 0;
}
-static inline int decode_mb(MDECContext *a, DCTELEM block[6][64]){
- int i;
+static inline int decode_mb(MDECContext *a, int16_t block[6][64])
+{
+ int i, ret;
+ static const int block_index[6] = { 5, 4, 0, 1, 2, 3 };
- a->dsp.clear_blocks(block[0]);
-
- for(i=5; i>=0; i--){
- if( mdec_decode_block_intra(a, block[i], i) < 0)
- return -1;
- }
- return 0;
-}
+ a->bdsp.clear_blocks(block[0]);
-static inline void idct_put(MDECContext *a, int mb_x, int mb_y){
- DCTELEM (*block)[64]= a->block;
- int linesize= a->picture.linesize[0];
-
- uint8_t *dest_y = a->picture.data[0] + (mb_y * 16* linesize ) + mb_x * 16;
- uint8_t *dest_cb = a->picture.data[1] + (mb_y * 8 * a->picture.linesize[1]) + mb_x * 8;
- uint8_t *dest_cr = a->picture.data[2] + (mb_y * 8 * a->picture.linesize[2]) + mb_x * 8;
-
- a->dsp.idct_put(dest_y , linesize, block[0]);
- a->dsp.idct_put(dest_y + 8, linesize, block[1]);
- a->dsp.idct_put(dest_y + 8*linesize , linesize, block[2]);
- a->dsp.idct_put(dest_y + 8*linesize + 8, linesize, block[3]);
-
- if(!(a->avctx->flags&CODEC_FLAG_GRAY)){
- a->dsp.idct_put(dest_cb, a->picture.linesize[1], block[4]);
- a->dsp.idct_put(dest_cr, a->picture.linesize[2], block[5]);
+ for (i = 0; i < 6; i++) {
+ if ((ret = mdec_decode_block_intra(a, block[block_index[i]],
+ block_index[i])) < 0)
+ return ret;
+ if (get_bits_left(&a->gb) < 0)
+ return AVERROR_INVALIDDATA;
}
+ return 0;
}
-static int decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
+static inline void idct_put(MDECContext *a, AVFrame *frame, int mb_x, int mb_y)
{
- MDECContext * const a = avctx->priv_data;
- AVFrame *picture = data;
- AVFrame * const p= (AVFrame*)&a->picture;
- int i;
+ int16_t (*block)[64] = a->block;
+ int linesize = frame->linesize[0];
- *data_size = 0;
+ uint8_t *dest_y = frame->data[0] + (mb_y * 16* linesize ) + mb_x * 16;
+ uint8_t *dest_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8;
+ uint8_t *dest_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8;
- /* special case for last picture */
- if (buf_size == 0) {
- return 0;
- }
+ a->idsp.idct_put(dest_y, linesize, block[0]);
+ a->idsp.idct_put(dest_y + 8, linesize, block[1]);
+ a->idsp.idct_put(dest_y + 8 * linesize, linesize, block[2]);
+ a->idsp.idct_put(dest_y + 8 * linesize + 8, linesize, block[3]);
- if(p->data[0])
- avctx->release_buffer(avctx, p);
+ if (!(a->avctx->flags & AV_CODEC_FLAG_GRAY)) {
+ a->idsp.idct_put(dest_cb, frame->linesize[1], block[4]);
+ a->idsp.idct_put(dest_cr, frame->linesize[2], block[5]);
+ }
+}
- p->reference= 0;
- if(avctx->get_buffer(avctx, p) < 0){
- fprintf(stderr, "get_buffer() failed\n");
- return -1;
+static int decode_frame(AVCodecContext *avctx,
+ void *data, int *got_frame,
+ AVPacket *avpkt)
+{
+ MDECContext * const a = avctx->priv_data;
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
+ ThreadFrame frame = { .f = data };
+ int i, ret;
+
+ if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;
}
- p->pict_type= I_TYPE;
- p->key_frame= 1;
- a->last_dc[0]=
- a->last_dc[1]=
- a->last_dc[2]= 0;
-
- a->bitstream_buffer= av_fast_realloc(a->bitstream_buffer, &a->bitstream_buffer_size, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
- for(i=0; i<buf_size; i+=2){
- a->bitstream_buffer[i] = buf[i+1];
- a->bitstream_buffer[i+1]= buf[i ];
+ frame.f->pict_type = AV_PICTURE_TYPE_I;
+ frame.f->key_frame = 1;
+
+ av_fast_malloc(&a->bitstream_buffer, &a->bitstream_buffer_size, buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
+ if (!a->bitstream_buffer)
+ return AVERROR(ENOMEM);
+ for (i = 0; i < buf_size; i += 2) {
+ a->bitstream_buffer[i] = buf[i + 1];
+ a->bitstream_buffer[i + 1] = buf[i];
}
-// a->dsp.bswap_buf((uint32_t*)a->bitstream_buffer, (uint32_t*)buf, buf_size/4);
- init_get_bits(&a->gb, a->bitstream_buffer, buf_size*8);
-
+ init_get_bits(&a->gb, a->bitstream_buffer, buf_size * 8);
+
/* skip over 4 preamble bytes in stream (typically 0xXX 0xXX 0x00 0x38) */
skip_bits(&a->gb, 32);
- a->qscale= get_bits(&a->gb, 16);
- a->version= get_bits(&a->gb, 16);
- skip_bits(&a->gb, 8*8);
-
- printf("qscale:%d (0x%X), version:%d (0x%X)\n", a->qscale, a->qscale, a->version, a->version);
-
- for(a->mb_y=0; a->mb_y<a->mb_height; a->mb_y++){
- for(a->mb_x=0; a->mb_x<a->mb_width; a->mb_x++){
- if( decode_mb(a, a->block) <0)
- return -1;
-
- idct_put(a, a->mb_x, a->mb_y);
+ a->qscale = get_bits(&a->gb, 16);
+ a->version = get_bits(&a->gb, 16);
+
+ a->last_dc[0] = a->last_dc[1] = a->last_dc[2] = 128;
+
+ for (a->mb_x = 0; a->mb_x < a->mb_width; a->mb_x++) {
+ for (a->mb_y = 0; a->mb_y < a->mb_height; a->mb_y++) {
+ if ((ret = decode_mb(a, a->block)) < 0)
+ return ret;
+
+ idct_put(a, frame.f, a->mb_x, a->mb_y);
}
}
-#if 0
-int i;
-printf("%d %d\n", 8*buf_size, get_bits_count(&a->gb));
-for(i=get_bits_count(&a->gb); i<8*buf_size; i++){
- printf("%d", get_bits1(&a->gb));
-}
+ *got_frame = 1;
-for(i=0; i<s->avctx->extradata_size; i++){
- printf("%c\n", ((uint8_t*)s->avctx->extradata)[i]);
+ return (get_bits_count(&a->gb) + 31) / 32 * 4;
}
-#endif
-// p->quality= (32 + a->inv_qscale/2)/a->inv_qscale;
-// memset(p->qscale_table, p->quality, p->qstride*a->mb_height);
-
- *picture= *(AVFrame*)&a->picture;
- *data_size = sizeof(AVPicture);
+static av_cold int decode_init(AVCodecContext *avctx)
+{
+ MDECContext * const a = avctx->priv_data;
- emms_c();
-
- return (get_bits_count(&a->gb)+31)/32*4;
-}
+ a->mb_width = (avctx->coded_width + 15) / 16;
+ a->mb_height = (avctx->coded_height + 15) / 16;
-static void mdec_common_init(AVCodecContext *avctx){
- MDECContext * const a = avctx->priv_data;
+ a->avctx = avctx;
- dsputil_init(&a->dsp, avctx);
+ ff_blockdsp_init(&a->bdsp, avctx);
+ ff_idctdsp_init(&a->idsp, avctx);
+ ff_mpeg12_init_vlcs();
+ ff_init_scantable(a->idsp.idct_permutation, &a->scantable,
+ ff_zigzag_direct);
- a->mb_width = (avctx->width + 15) / 16;
- a->mb_height = (avctx->height + 15) / 16;
+ if (avctx->idct_algo == FF_IDCT_AUTO)
+ avctx->idct_algo = FF_IDCT_SIMPLE;
+ avctx->pix_fmt = AV_PIX_FMT_YUVJ420P;
+ avctx->color_range = AVCOL_RANGE_JPEG;
- avctx->coded_frame= (AVFrame*)&a->picture;
- a->avctx= avctx;
+ return 0;
}
-static int decode_init(AVCodecContext *avctx){
+static av_cold int decode_init_thread_copy(AVCodecContext *avctx)
+{
MDECContext * const a = avctx->priv_data;
- AVFrame *p= (AVFrame*)&a->picture;
-
- mdec_common_init(avctx);
- init_vlcs();
- ff_init_scantable(a->dsp.idct_permutation, &a->scantable, ff_zigzag_direct);
-/*
- for(i=0; i<64; i++){
- int index= ff_zigzag_direct[i];
- a->intra_matrix[i]= 64*ff_mpeg1_default_intra_matrix[index] / a->inv_qscale;
- }
-*/
- p->qstride= a->mb_width;
- p->qscale_table= av_mallocz( p->qstride * a->mb_height);
+
+ a->avctx = avctx;
return 0;
}
-static int decode_end(AVCodecContext *avctx){
+static av_cold int decode_end(AVCodecContext *avctx)
+{
MDECContext * const a = avctx->priv_data;
av_freep(&a->bitstream_buffer);
- av_freep(&a->picture.qscale_table);
- a->bitstream_buffer_size=0;
-
- avcodec_default_free_buffers(avctx);
+ a->bitstream_buffer_size = 0;
return 0;
}
-AVCodec mdec_decoder = {
- "mdec",
- CODEC_TYPE_VIDEO,
- CODEC_ID_MDEC,
- sizeof(MDECContext),
- decode_init,
- NULL,
- decode_end,
- decode_frame,
- CODEC_CAP_DR1,
+AVCodec ff_mdec_decoder = {
+ .name = "mdec",
+ .long_name = NULL_IF_CONFIG_SMALL("Sony PlayStation MDEC (Motion DECoder)"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_MDEC,
+ .priv_data_size = sizeof(MDECContext),
+ .init = decode_init,
+ .close = decode_end,
+ .decode = decode_frame,
+ .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
+ .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy)
};
-
projects / ffmpeg / blobdiff