*/
#include "avcodec.h"
-#include "dsputil.h"
-#include "mpegvideo.h"
+#include "blockdsp.h"
+#include "idctdsp.h"
#include "mpeg12.h"
#include "thread.h"
typedef struct MDECContext {
AVCodecContext *avctx;
- DSPContext dsp;
- AVFrame picture;
+ BlockDSPContext bdsp;
+ IDCTDSPContext idsp;
+ ThreadFrame frame;
GetBitContext gb;
ScanTable scantable;
int version;
component = (n <= 3 ? 0 : n - 4 + 1);
diff = decode_dc(&a->gb, component);
if (diff >= 0xffff)
- return -1;
+ return AVERROR_INVALIDDATA;
a->last_dc[component] += diff;
block[0] = a->last_dc[component] << 3;
}
if (level == 127) {
break;
} else if (level != 0) {
- i += run;
+ 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];
level = (level * qscale * quant_matrix[j]) >> 3;
level = (level ^ SHOW_SBITS(re, &a->gb, 1)) - SHOW_SBITS(re, &a->gb, 1);
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, 10); SKIP_BITS(re, &a->gb, 10);
- i += run;
- j = scantable[i];
+ 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]) >> 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 -1;
- }
block[j] = level;
}
static inline int decode_mb(MDECContext *a, int16_t block[6][64])
{
- int i;
- const int block_index[6] = { 5, 4, 0, 1, 2, 3 };
+ int i, ret;
+ static const int block_index[6] = { 5, 4, 0, 1, 2, 3 };
- a->dsp.clear_blocks(block[0]);
+ a->bdsp.clear_blocks(block[0]);
for (i = 0; i < 6; i++) {
- if (mdec_decode_block_intra(a, block[block_index[i]], block_index[i]) < 0 ||
- get_bits_left(&a->gb) < 0)
- return -1;
+ 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 inline void idct_put(MDECContext *a, int mb_x, int mb_y)
+static inline void idct_put(MDECContext *a, AVFrame *frame, int mb_x, int mb_y)
{
int16_t (*block)[64] = a->block;
- int linesize = a->picture.linesize[0];
+ int linesize = frame->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;
+ 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;
- 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]);
+ 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 (!(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]);
+ 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]);
}
}
MDECContext * const a = avctx->priv_data;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
- AVFrame *picture = data;
- AVFrame * const p = &a->picture;
- int i;
-
- if (p->data[0])
- ff_thread_release_buffer(avctx, p);
+ ThreadFrame frame = { .f = data };
+ int i, ret;
- p->reference = 0;
- if (ff_thread_get_buffer(avctx, p) < 0) {
+ if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
+ return ret;
}
- p->pict_type = AV_PICTURE_TYPE_I;
- p->key_frame = 1;
+ 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 + FF_INPUT_BUFFER_PADDING_SIZE);
+ 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) {
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 (decode_mb(a, a->block) < 0)
- return -1;
+ if ((ret = decode_mb(a, a->block)) < 0)
+ return ret;
- idct_put(a, a->mb_x, a->mb_y);
+ idct_put(a, frame.f, a->mb_x, a->mb_y);
}
}
- p->quality = a->qscale * FF_QP2LAMBDA;
- memset(p->qscale_table, a->qscale, a->mb_width);
-
- *picture = a->picture;
*got_frame = 1;
return (get_bits_count(&a->gb) + 31) / 32 * 4;
static av_cold int decode_init(AVCodecContext *avctx)
{
MDECContext * const a = avctx->priv_data;
- AVFrame *p = &a->picture;
a->mb_width = (avctx->coded_width + 15) / 16;
a->mb_height = (avctx->coded_height + 15) / 16;
- avctx->coded_frame = &a->picture;
a->avctx = avctx;
- ff_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->dsp.idct_permutation, &a->scantable, ff_zigzag_direct);
+ ff_init_scantable(a->idsp.idct_permutation, &a->scantable,
+ ff_zigzag_direct);
if (avctx->idct_algo == FF_IDCT_AUTO)
avctx->idct_algo = FF_IDCT_SIMPLE;
- p->qstride = 0;
- p->qscale_table = av_mallocz(a->mb_width);
avctx->pix_fmt = AV_PIX_FMT_YUVJ420P;
+ avctx->color_range = AVCOL_RANGE_JPEG;
return 0;
}
static av_cold int decode_init_thread_copy(AVCodecContext *avctx)
{
MDECContext * const a = avctx->priv_data;
- AVFrame *p = &a->picture;
- avctx->coded_frame = p;
a->avctx = avctx;
- p->qscale_table = av_mallocz( a->mb_width);
-
return 0;
}
{
MDECContext * const a = avctx->priv_data;
- if (a->picture.data[0])
- avctx->release_buffer(avctx, &a->picture);
av_freep(&a->bitstream_buffer);
- av_freep(&a->picture.qscale_table);
a->bitstream_buffer_size = 0;
return 0;
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 = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
- .long_name = NULL_IF_CONFIG_SMALL("Sony PlayStation MDEC (Motion DECoder)"),
+ .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
.init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy)
};
projects / ffmpeg / blobdiff