* Electronic Arts TQI Video Decoder
* Copyright (c) 2007-2009 Peter Ross <pross@xvid.org>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file eatqi.c
+ * @file
* Electronic Arts TQI Video Decoder
- * by Peter Ross <pross@xvid.org>
- *
- * Technical details here:
- * http://wiki.multimedia.cx/index.php?title=Electronic_Arts_TQI
+ * @author Peter Ross <pross@xvid.org>
+ * @see http://wiki.multimedia.cx/index.php?title=Electronic_Arts_TQI
*/
#include "avcodec.h"
+#include "blockdsp.h"
+#include "bswapdsp.h"
#include "get_bits.h"
-#include "dsputil.h"
#include "aandcttab.h"
+#include "eaidct.h"
+#include "idctdsp.h"
+#include "internal.h"
#include "mpeg12.h"
-#include "mpegvideo.h"
typedef struct TqiContext {
- MpegEncContext s;
- AVFrame frame;
+ GetBitContext gb;
+ BlockDSPContext bdsp;
+ BswapDSPContext bsdsp;
+ IDCTDSPContext idsp;
+ ScanTable intra_scantable;
+
void *bitstream_buf;
unsigned int bitstream_buf_size;
- DECLARE_ALIGNED(16, DCTELEM, block)[6][64];
+
+ int mb_x, mb_y;
+ uint16_t intra_matrix[64];
+ int last_dc[3];
+
+ DECLARE_ALIGNED(16, int16_t, block)[6][64];
} TqiContext;
static av_cold int tqi_decode_init(AVCodecContext *avctx)
{
TqiContext *t = avctx->priv_data;
- MpegEncContext *s = &t->s;
- s->avctx = avctx;
- if(avctx->idct_algo==FF_IDCT_AUTO)
- avctx->idct_algo=FF_IDCT_EA;
- dsputil_init(&s->dsp, avctx);
- ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct);
- s->qscale = 1;
- avctx->time_base = (AVRational){1, 15};
- avctx->pix_fmt = PIX_FMT_YUV420P;
+
+ ff_blockdsp_init(&t->bdsp, avctx);
+ ff_bswapdsp_init(&t->bsdsp);
+ ff_idctdsp_init(&t->idsp, avctx);
+ ff_init_scantable_permutation(t->idsp.idct_permutation, FF_IDCT_PERM_NONE);
+ ff_init_scantable(t->idsp.idct_permutation, &t->intra_scantable, ff_zigzag_direct);
+
+ avctx->framerate = (AVRational){ 15, 1 };
+ avctx->pix_fmt = AV_PIX_FMT_YUV420P;
ff_mpeg12_init_vlcs();
return 0;
}
-static void tqi_decode_mb(MpegEncContext *s, DCTELEM (*block)[64])
+static int tqi_decode_mb(TqiContext *t, int16_t (*block)[64])
{
int n;
- s->dsp.clear_blocks(block[0]);
- for (n=0; n<6; n++)
- ff_mpeg1_decode_block_intra(s, block[n], n);
+
+ t->bdsp.clear_blocks(block[0]);
+ for (n = 0; n < 6; n++) {
+ int ret = ff_mpeg1_decode_block_intra(&t->gb,
+ t->intra_matrix,
+ t->intra_scantable.permutated,
+ t->last_dc, block[n], n, 1);
+ if (ret < 0)
+ return -1;
+ }
+
+ return 0;
}
-static inline void tqi_idct_put(TqiContext *t, DCTELEM (*block)[64])
+static inline void tqi_idct_put(AVCodecContext *avctx, AVFrame *frame,
+ int16_t (*block)[64])
{
- MpegEncContext *s = &t->s;
- int linesize= t->frame.linesize[0];
- uint8_t *dest_y = t->frame.data[0] + (s->mb_y * 16* linesize ) + s->mb_x * 16;
- uint8_t *dest_cb = t->frame.data[1] + (s->mb_y * 8 * t->frame.linesize[1]) + s->mb_x * 8;
- uint8_t *dest_cr = t->frame.data[2] + (s->mb_y * 8 * t->frame.linesize[2]) + s->mb_x * 8;
-
- s->dsp.idct_put(dest_y , linesize, block[0]);
- s->dsp.idct_put(dest_y + 8, linesize, block[1]);
- s->dsp.idct_put(dest_y + 8*linesize , linesize, block[2]);
- s->dsp.idct_put(dest_y + 8*linesize + 8, linesize, block[3]);
- if(!(s->avctx->flags&CODEC_FLAG_GRAY)) {
- s->dsp.idct_put(dest_cb, t->frame.linesize[1], block[4]);
- s->dsp.idct_put(dest_cr, t->frame.linesize[2], block[5]);
+ TqiContext *t = avctx->priv_data;
+ ptrdiff_t linesize = frame->linesize[0];
+ uint8_t *dest_y = frame->data[0] + t->mb_y * 16 * linesize + t->mb_x * 16;
+ uint8_t *dest_cb = frame->data[1] + t->mb_y * 8 * frame->linesize[1] + t->mb_x * 8;
+ uint8_t *dest_cr = frame->data[2] + t->mb_y * 8 * frame->linesize[2] + t->mb_x * 8;
+
+ ff_ea_idct_put_c(dest_y , linesize, block[0]);
+ ff_ea_idct_put_c(dest_y + 8, linesize, block[1]);
+ ff_ea_idct_put_c(dest_y + 8*linesize , linesize, block[2]);
+ ff_ea_idct_put_c(dest_y + 8*linesize + 8, linesize, block[3]);
+
+ if (!(avctx->flags & AV_CODEC_FLAG_GRAY)) {
+ ff_ea_idct_put_c(dest_cb, frame->linesize[1], block[4]);
+ ff_ea_idct_put_c(dest_cr, frame->linesize[2], block[5]);
}
}
-static void tqi_calculate_qtable(MpegEncContext *s, int quant)
+static void tqi_calculate_qtable(TqiContext *t, int quant)
{
const int qscale = (215 - 2*quant)*5;
int i;
- if (s->avctx->idct_algo==FF_IDCT_EA) {
- s->intra_matrix[0] = (ff_inv_aanscales[0]*ff_mpeg1_default_intra_matrix[0])>>11;
- for(i=1; i<64; i++)
- s->intra_matrix[i] = (ff_inv_aanscales[i]*ff_mpeg1_default_intra_matrix[i]*qscale + 32)>>14;
- }else{
- s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0];
- for(i=1; i<64; i++)
- s->intra_matrix[i] = (ff_mpeg1_default_intra_matrix[i]*qscale + 32)>>3;
- }
+
+ t->intra_matrix[0] = (ff_inv_aanscales[0] * ff_mpeg1_default_intra_matrix[0]) >> 11;
+ for(i=1; i<64; i++)
+ t->intra_matrix[i] = (ff_inv_aanscales[i] * ff_mpeg1_default_intra_matrix[i] * qscale + 32) >> 14;
}
static int tqi_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
+ void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
const uint8_t *buf_end = buf+buf_size;
TqiContext *t = avctx->priv_data;
- MpegEncContext *s = &t->s;
+ AVFrame *frame = data;
+ int ret, w, h;
- s->width = AV_RL16(&buf[0]);
- s->height = AV_RL16(&buf[2]);
- tqi_calculate_qtable(s, buf[4]);
+ w = AV_RL16(&buf[0]);
+ h = AV_RL16(&buf[2]);
+ tqi_calculate_qtable(t, buf[4]);
buf += 8;
- if (t->frame.data[0])
- avctx->release_buffer(avctx, &t->frame);
-
- if (s->avctx->width!=s->width || s->avctx->height!=s->height)
- avcodec_set_dimensions(s->avctx, s->width, s->height);
+ ret = ff_set_dimensions(avctx, w, h);
+ if (ret < 0)
+ return ret;
- if(avctx->get_buffer(avctx, &t->frame) < 0) {
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
+ return ret;
}
- av_fast_malloc(&t->bitstream_buf, &t->bitstream_buf_size, (buf_end-buf) + FF_INPUT_BUFFER_PADDING_SIZE);
+ av_fast_padded_malloc(&t->bitstream_buf, &t->bitstream_buf_size,
+ buf_end - buf);
if (!t->bitstream_buf)
return AVERROR(ENOMEM);
- s->dsp.bswap_buf(t->bitstream_buf, (const uint32_t*)buf, (buf_end-buf)/4);
- init_get_bits(&s->gb, t->bitstream_buf, 8*(buf_end-buf));
-
- s->last_dc[0] = s->last_dc[1] = s->last_dc[2] = 0;
- for (s->mb_y=0; s->mb_y<(avctx->height+15)/16; s->mb_y++)
- for (s->mb_x=0; s->mb_x<(avctx->width+15)/16; s->mb_x++)
- {
- tqi_decode_mb(s, t->block);
- tqi_idct_put(t, t->block);
+ t->bsdsp.bswap_buf(t->bitstream_buf, (const uint32_t *) buf,
+ (buf_end - buf) / 4);
+ init_get_bits(&t->gb, t->bitstream_buf, 8 * (buf_end - buf));
+
+ t->last_dc[0] =
+ t->last_dc[1] =
+ t->last_dc[2] = 0;
+ for (t->mb_y = 0; t->mb_y < (h + 15) / 16; t->mb_y++) {
+ for (t->mb_x = 0; t->mb_x < (w + 15) / 16; t->mb_x++) {
+ if (tqi_decode_mb(t, t->block) < 0)
+ break;
+ tqi_idct_put(avctx, frame, t->block);
+ }
}
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = t->frame;
+ *got_frame = 1;
return buf_size;
}
static av_cold int tqi_decode_end(AVCodecContext *avctx)
{
TqiContext *t = avctx->priv_data;
- if(t->frame.data[0])
- avctx->release_buffer(avctx, &t->frame);
av_free(t->bitstream_buf);
return 0;
}
-AVCodec eatqi_decoder = {
- "eatqi",
- CODEC_TYPE_VIDEO,
- CODEC_ID_TQI,
- sizeof(TqiContext),
- tqi_decode_init,
- NULL,
- tqi_decode_end,
- tqi_decode_frame,
- CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts TQI Video"),
+AVCodec ff_eatqi_decoder = {
+ .name = "eatqi",
+ .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts TQI Video"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_TQI,
+ .priv_data_size = sizeof(TqiContext),
+ .init = tqi_decode_init,
+ .close = tqi_decode_end,
+ .decode = tqi_decode_frame,
+ .capabilities = AV_CODEC_CAP_DR1,
};
projects / ffmpeg / blobdiff