* http://wiki.multimedia.cx/index.php?title=Electronic_Arts_TGQ
*/
-#include "avcodec.h"
#define BITSTREAM_READER_LE
-#include "get_bits.h"
-#include "bytestream.h"
-#include "dsputil.h"
#include "aandcttab.h"
+#include "avcodec.h"
+#include "bitstream.h"
+#include "bytestream.h"
#include "eaidct.h"
+#include "idctdsp.h"
#include "internal.h"
typedef struct TgqContext {
AVCodecContext *avctx;
- AVFrame frame;
int width, height;
ScanTable scantable;
int qtable[64];
TgqContext *s = avctx->priv_data;
uint8_t idct_permutation[64];
s->avctx = avctx;
- ff_init_scantable_permutation(idct_permutation, FF_NO_IDCT_PERM);
+ ff_init_scantable_permutation(idct_permutation, FF_IDCT_PERM_NONE);
ff_init_scantable(idct_permutation, &s->scantable, ff_zigzag_direct);
- avctx->time_base = (AVRational){1, 15};
+ avctx->framerate = (AVRational){ 15, 1 };
avctx->pix_fmt = AV_PIX_FMT_YUV420P;
return 0;
}
-static void tgq_decode_block(TgqContext *s, int16_t block[64], GetBitContext *gb)
+static void tgq_decode_block(TgqContext *s, int16_t block[64], BitstreamContext *bc)
{
uint8_t *perm = s->scantable.permutated;
int i, j, value;
- block[0] = get_sbits(gb, 8) * s->qtable[0];
+ block[0] = bitstream_read_signed(bc, 8) * s->qtable[0];
for (i = 1; i < 64;) {
- switch (show_bits(gb, 3)) {
+ switch (bitstream_peek(bc, 3)) {
case 4:
block[perm[i++]] = 0;
case 0:
block[perm[i++]] = 0;
- skip_bits(gb, 3);
+ bitstream_skip(bc, 3);
break;
case 5:
case 1:
- skip_bits(gb, 2);
- value = get_bits(gb, 6);
+ bitstream_skip(bc, 2);
+ value = bitstream_read(bc, 6);
for (j = 0; j < value; j++)
block[perm[i++]] = 0;
break;
case 6:
- skip_bits(gb, 3);
+ bitstream_skip(bc, 3);
block[perm[i]] = -s->qtable[perm[i]];
i++;
break;
case 2:
- skip_bits(gb, 3);
+ bitstream_skip(bc, 3);
block[perm[i]] = s->qtable[perm[i]];
i++;
break;
case 7: // 111b
case 3: // 011b
- skip_bits(gb, 2);
- if (show_bits(gb, 6) == 0x3F) {
- skip_bits(gb, 6);
- block[perm[i]] = get_sbits(gb, 8) * s->qtable[perm[i]];
+ bitstream_skip(bc, 2);
+ if (bitstream_peek(bc, 6) == 0x3F) {
+ bitstream_skip(bc, 6);
+ block[perm[i]] = bitstream_read_signed(bc, 8) * s->qtable[perm[i]];
} else {
- block[perm[i]] = get_sbits(gb, 6) * s->qtable[perm[i]];
+ block[perm[i]] = bitstream_read_signed(bc, 6) * s->qtable[perm[i]];
}
i++;
break;
block[0] += 128 << 4;
}
-static void tgq_idct_put_mb(TgqContext *s, int16_t (*block)[64],
+static void tgq_idct_put_mb(TgqContext *s, int16_t (*block)[64], AVFrame *frame,
int mb_x, int mb_y)
{
- int linesize = s->frame.linesize[0];
- uint8_t *dest_y = s->frame.data[0] + (mb_y * 16 * linesize) + mb_x * 16;
- uint8_t *dest_cb = s->frame.data[1] + (mb_y * 8 * s->frame.linesize[1]) + mb_x * 8;
- uint8_t *dest_cr = s->frame.data[2] + (mb_y * 8 * s->frame.linesize[2]) + mb_x * 8;
+ ptrdiff_t linesize = frame->linesize[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;
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 (!(s->avctx->flags & CODEC_FLAG_GRAY)) {
- ff_ea_idct_put_c(dest_cb, s->frame.linesize[1], block[4]);
- ff_ea_idct_put_c(dest_cr, s->frame.linesize[2], block[5]);
+ if (!(s->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 inline void tgq_dconly(TgqContext *s, unsigned char *dst,
- int dst_stride, int dc)
+ ptrdiff_t dst_stride, int dc)
{
int level = av_clip_uint8((dc*s->qtable[0] + 2056) >> 4);
int j;
memset(dst + j * dst_stride, level, 8);
}
-static void tgq_idct_put_mb_dconly(TgqContext *s, int mb_x, int mb_y, const int8_t *dc)
+static void tgq_idct_put_mb_dconly(TgqContext *s, AVFrame *frame,
+ int mb_x, int mb_y, const int8_t *dc)
{
- int linesize = s->frame.linesize[0];
- uint8_t *dest_y = s->frame.data[0] + (mb_y * 16 * linesize) + mb_x * 16;
- uint8_t *dest_cb = s->frame.data[1] + (mb_y * 8 * s->frame.linesize[1]) + mb_x * 8;
- uint8_t *dest_cr = s->frame.data[2] + (mb_y * 8 * s->frame.linesize[2]) + mb_x * 8;
+ ptrdiff_t linesize = frame->linesize[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;
tgq_dconly(s, dest_y, linesize, dc[0]);
tgq_dconly(s, dest_y + 8, linesize, dc[1]);
tgq_dconly(s, dest_y + 8 * linesize, linesize, dc[2]);
tgq_dconly(s, dest_y + 8 * linesize + 8, linesize, dc[3]);
- if (!(s->avctx->flags & CODEC_FLAG_GRAY)) {
- tgq_dconly(s, dest_cb, s->frame.linesize[1], dc[4]);
- tgq_dconly(s, dest_cr, s->frame.linesize[2], dc[5]);
+ if (!(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
+ tgq_dconly(s, dest_cb, frame->linesize[1], dc[4]);
+ tgq_dconly(s, dest_cr, frame->linesize[2], dc[5]);
}
}
-static void tgq_decode_mb(TgqContext *s, int mb_y, int mb_x)
+static void tgq_decode_mb(TgqContext *s, AVFrame *frame, int mb_y, int mb_x)
{
int mode;
int i;
mode = bytestream2_get_byte(&s->gb);
if (mode > 12) {
- GetBitContext gb;
- init_get_bits(&gb, s->gb.buffer, FFMIN(s->gb.buffer_end - s->gb.buffer, mode) * 8);
+ BitstreamContext bc;
+ bitstream_init(&bc, s->gb.buffer, FFMIN(s->gb.buffer_end - s->gb.buffer, mode) * 8);
for (i = 0; i < 6; i++)
- tgq_decode_block(s, s->block[i], &gb);
- tgq_idct_put_mb(s, s->block, mb_x, mb_y);
+ tgq_decode_block(s, s->block[i], &bc);
+ tgq_idct_put_mb(s, s->block, frame, mb_x, mb_y);
bytestream2_skip(&s->gb, mode);
} else {
if (mode == 3) {
} else {
av_log(s->avctx, AV_LOG_ERROR, "unsupported mb mode %i\n", mode);
}
- tgq_idct_put_mb_dconly(s, mb_x, mb_y, dc);
+ tgq_idct_put_mb_dconly(s, frame, mb_x, mb_y, dc);
}
}
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
TgqContext *s = avctx->priv_data;
+ AVFrame *frame = data;
int x, y, ret;
int big_endian = AV_RL32(&buf[4]) > 0x000FFFFF;
s->height = bytestream2_get_le16u(&s->gb);
}
- if (s->avctx->width!=s->width || s->avctx->height!=s->height) {
- avcodec_set_dimensions(s->avctx, s->width, s->height);
- if (s->frame.data[0])
- avctx->release_buffer(avctx, &s->frame);
- }
+ ret = ff_set_dimensions(s->avctx, s->width, s->height);
+ if (ret < 0)
+ return ret;
+
tgq_calculate_qtable(s, bytestream2_get_byteu(&s->gb));
bytestream2_skip(&s->gb, 3);
- if (!s->frame.data[0]) {
- s->frame.key_frame = 1;
- s->frame.pict_type = AV_PICTURE_TYPE_I;
- s->frame.buffer_hints = FF_BUFFER_HINTS_VALID;
- if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return ret;
- }
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;
}
+ frame->key_frame = 1;
+ frame->pict_type = AV_PICTURE_TYPE_I;
for (y = 0; y < FFALIGN(avctx->height, 16) >> 4; y++)
for (x = 0; x < FFALIGN(avctx->width, 16) >> 4; x++)
- tgq_decode_mb(s, y, x);
+ tgq_decode_mb(s, frame, y, x);
*got_frame = 1;
- *(AVFrame*)data = s->frame;
return avpkt->size;
}
-static av_cold int tgq_decode_end(AVCodecContext *avctx)
-{
- TgqContext *s = avctx->priv_data;
- if (s->frame.data[0])
- s->avctx->release_buffer(avctx, &s->frame);
- return 0;
-}
-
AVCodec ff_eatgq_decoder = {
.name = "eatgq",
+ .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts TGQ video"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_TGQ,
.priv_data_size = sizeof(TgqContext),
.init = tgq_decode_init,
- .close = tgq_decode_end,
.decode = tgq_decode_frame,
- .capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts TGQ video"),
+ .capabilities = AV_CODEC_CAP_DR1,
};
projects / ffmpeg / blobdiff