diff options
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/Makefile | 3 | ||||
| -rw-r--r-- | libavcodec/adpcm.c | 22 | ||||
| -rw-r--r-- | libavcodec/allcodecs.c | 5 | ||||
| -rw-r--r-- | libavcodec/avcodec.h | 11 | ||||
| -rw-r--r-- | libavcodec/cinepak.c | 456 | ||||
| -rw-r--r-- | libavcodec/msrle.c | 219 | ||||
| -rw-r--r-- | libavcodec/msvideo1.c | 378 | ||||
| -rw-r--r-- | libavcodec/rpza.c | 310 |
8 files changed, 1402 insertions, 2 deletions
diff --git a/libavcodec/Makefile b/libavcodec/Makefile index b34f0c3b31..bbad77ba69 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -17,7 +17,8 @@ OBJS= common.o utils.o mem.o allcodecs.o \ ratecontrol.o adpcm.o eval.o dv.o error_resilience.o \ fft.o mdct.o mace.o huffyuv.o cyuv.o opts.o raw.o h264.o golomb.o \ vp3.o asv1.o 4xm.o cabac.o ffv1.o ra144.o ra288.o vcr1.o cljr.o \ - roqvideo.o dpcm.o interplayvideo.o xan.o + roqvideo.o dpcm.o interplayvideo.o xan.o rpza.o cinepak.o msrle.o \ + msvideo1.o ifeq ($(AMR_NB),yes) ifeq ($(AMR_NB_FIXED),yes) diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c index a9b3195d27..84d1e39f77 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -22,7 +22,7 @@ * @file adpcm.c * ADPCM codecs. * First version by Francois Revol revol@free.fr - * Fringe ADPCM codecs (e.g., DK3 and DK4) + * Fringe ADPCM codecs (e.g., DK3, DK4, Westwood) * by Mike Melanson (melanson@pcisys.net) * * Features and limitations: @@ -658,6 +658,25 @@ static int adpcm_decode_frame(AVCodecContext *avctx, *samples++ = c->status[0].predictor - c->status[1].predictor; } break; + case CODEC_ID_ADPCM_IMA_WS: + /* no per-block initialization; just start decoding the data */ + while (src < buf + buf_size) { + + if (st) { + *samples++ = adpcm_ima_expand_nibble(&c->status[0], + (src[0] >> 4) & 0x0F); + *samples++ = adpcm_ima_expand_nibble(&c->status[1], + src[0] & 0x0F); + } else { + *samples++ = adpcm_ima_expand_nibble(&c->status[0], + (src[0] >> 4) & 0x0F); + *samples++ = adpcm_ima_expand_nibble(&c->status[0], + src[0] & 0x0F); + } + + src++; + } + break; default: *data_size = 0; return -1; @@ -692,6 +711,7 @@ ADPCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt); ADPCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav); ADPCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3); ADPCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4); +ADPCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws); ADPCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms); ADPCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm); diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 8879bf1635..40af69ee82 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -123,6 +123,10 @@ void avcodec_register_all(void) register_avcodec(&roq_decoder); register_avcodec(&interplay_video_decoder); register_avcodec(&xan_wc3_decoder); + register_avcodec(&rpza_decoder); + register_avcodec(&cinepak_decoder); + register_avcodec(&msrle_decoder); + register_avcodec(&msvideo1_decoder); #ifdef CONFIG_AC3 register_avcodec(&ac3_decoder); #endif @@ -163,6 +167,7 @@ PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt); PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav); PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3); PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4); +PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws); PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms); PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm); diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index ad19cdcd55..61b0aecd2c 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -74,6 +74,11 @@ enum CodecID { CODEC_ID_INTERPLAY_VIDEO, CODEC_ID_XAN_WC3, CODEC_ID_XAN_WC4, + CODEC_ID_RPZA, + CODEC_ID_CINEPAK, + CODEC_ID_WS_VQA, + CODEC_ID_MSRLE, + CODEC_ID_MSVIDEO1, /* various pcm "codecs" */ CODEC_ID_PCM_S16LE, @@ -90,6 +95,7 @@ enum CodecID { CODEC_ID_ADPCM_IMA_WAV, CODEC_ID_ADPCM_IMA_DK3, CODEC_ID_ADPCM_IMA_DK4, + CODEC_ID_ADPCM_IMA_WS, CODEC_ID_ADPCM_MS, CODEC_ID_ADPCM_4XM, @@ -1419,6 +1425,10 @@ extern AVCodec mdec_decoder; extern AVCodec roq_decoder; extern AVCodec interplay_video_decoder; extern AVCodec xan_wc3_decoder; +extern AVCodec rpza_decoder; +extern AVCodec cinepak_decoder; +extern AVCodec msrle_decoder; +extern AVCodec msvideo1_decoder; extern AVCodec ra_144_decoder; extern AVCodec ra_288_decoder; extern AVCodec roq_dpcm_decoder; @@ -1445,6 +1455,7 @@ PCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt); PCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav); PCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3); PCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4); +PCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws); PCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms); PCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm); diff --git a/libavcodec/cinepak.c b/libavcodec/cinepak.c new file mode 100644 index 0000000000..c34a2d5ff3 --- /dev/null +++ b/libavcodec/cinepak.c @@ -0,0 +1,456 @@ +/* + * Cinepak Video Decoder + * Copyright (C) 2003 the ffmpeg project + * + * This library 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. + * + * This library 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 + * + */ + +/** + * @file cinepak.c + * Cinepak video decoder + * by Ewald Snel <ewald@rambo.its.tudelft.nl> + * For more information on the Cinepak algorithm, visit: + * http://www.csse.monash.edu.au/~timf/ + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "common.h" +#include "avcodec.h" +#include "dsputil.h" + +#define PALETTE_COUNT 256 + +#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1]) +#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \ + (((uint8_t*)(x))[1] << 16) | \ + (((uint8_t*)(x))[2] << 8) | \ + ((uint8_t*)(x))[3]) + +typedef struct { + uint8_t y0, y1, y2, y3; + uint8_t u, v; +} cvid_codebook_t; + +#define MAX_STRIPS 32 + +typedef struct { + uint16_t id; + uint16_t x1, y1; + uint16_t x2, y2; + cvid_codebook_t v4_codebook[256]; + cvid_codebook_t v1_codebook[256]; +} cvid_strip_t; + +typedef struct CinepakContext { + + AVCodecContext *avctx; + DSPContext dsp; + AVFrame frame; + AVFrame prev_frame; + + unsigned char *data; + int size; + + unsigned char palette[PALETTE_COUNT * 4]; + int palette_video; + cvid_strip_t strips[MAX_STRIPS]; + +} CinepakContext; + +static void cinepak_decode_codebook (cvid_codebook_t *codebook, + int chunk_id, int size, uint8_t *data) +{ + uint8_t *eod = (data + size); + uint32_t flag, mask; + int i, n; + + /* check if this chunk contains 4- or 6-element vectors */ + n = (chunk_id & 0x0400) ? 4 : 6; + flag = 0; + mask = 0; + + for (i=0; i < 256; i++) { + if ((chunk_id & 0x0100) && !(mask >>= 1)) { + if ((data + 4) > eod) + break; + + flag = BE_32 (data); + data += 4; + mask = 0x80000000; + } + + if (!(chunk_id & 0x0100) || (flag & mask)) { + if ((data + n) > eod) + break; + + if (n == 6) { + codebook[i].y0 = *data++; + codebook[i].y1 = *data++; + codebook[i].y2 = *data++; + codebook[i].y3 = *data++; + codebook[i].u = 128 + *data++; + codebook[i].v = 128 + *data++; + } else { + /* this codebook type indicates either greyscale or + * palettized video; if palettized, U & V components will + * not be used so it is safe to set them to 128 for the + * benefit of greyscale rendering in YUV420P */ + codebook[i].y0 = *data++; + codebook[i].y1 = *data++; + codebook[i].y2 = *data++; + codebook[i].y3 = *data++; + codebook[i].u = 128; + codebook[i].v = 128; + } + } + } +} + +static int cinepak_decode_vectors (CinepakContext *s, cvid_strip_t *strip, + int chunk_id, int size, uint8_t *data) +{ + uint8_t *eod = (data + size); + uint32_t flag, mask; + cvid_codebook_t *codebook; + unsigned int i, j, x, y; + uint32_t iy[4]; + uint32_t iu[2]; + uint32_t iv[2]; + + flag = 0; + mask = 0; + + for (y=strip->y1; y < strip->y2; y+=4) { + + iy[0] = strip->x1 + (y * s->frame.linesize[0]); + iy[1] = iy[0] + s->frame.linesize[0]; + iy[2] = iy[1] + s->frame.linesize[0]; + iy[3] = iy[2] + s->frame.linesize[0]; + iu[0] = (strip->x1/2) + ((y/2) * s->frame.linesize[1]); + iu[1] = iu[0] + s->frame.linesize[1]; + iv[0] = (strip->x1/2) + ((y/2) * s->frame.linesize[2]); + iv[1] = iv[0] + s->frame.linesize[2]; + + for (x=strip->x1; x < strip->x2; x+=4) { + if ((chunk_id & 0x0100) && !(mask >>= 1)) { + if ((data + 4) > eod) + return -1; + + flag = BE_32 (data); + data += 4; + mask = 0x80000000; + } + + if (!(chunk_id & 0x0100) || (flag & mask)) { + if (!(chunk_id & 0x0200) && !(mask >>= 1)) { + if ((data + 4) > eod) + return -1; + + flag = BE_32 (data); + data += 4; + mask = 0x80000000; + } + + if ((chunk_id & 0x0200) || (~flag & mask)) { + if (data >= eod) + return -1; + + codebook = &strip->v1_codebook[*data++]; + s->frame.data[0][iy[0] + 0] = codebook->y0; + s->frame.data[0][iy[0] + 1] = codebook->y0; + s->frame.data[0][iy[1] + 0] = codebook->y0; + s->frame.data[0][iy[1] + 1] = codebook->y0; + if (!s->palette_video) { + s->frame.data[1][iu[0]] = codebook->u; + s->frame.data[2][iv[0]] = codebook->v; + } + + s->frame.data[0][iy[0] + 2] = codebook->y0; + s->frame.data[0][iy[0] + 3] = codebook->y0; + s->frame.data[0][iy[1] + 2] = codebook->y0; + s->frame.data[0][iy[1] + 3] = codebook->y0; + if (!s->palette_video) { + s->frame.data[1][iu[0] + 1] = codebook->u; + s->frame.data[2][iv[0] + 1] = codebook->v; + } + + s->frame.data[0][iy[2] + 0] = codebook->y0; + s->frame.data[0][iy[2] + 1] = codebook->y0; + s->frame.data[0][iy[3] + 0] = codebook->y0; + s->frame.data[0][iy[3] + 1] = codebook->y0; + if (!s->palette_video) { + s->frame.data[1][iu[1]] = codebook->u; + s->frame.data[2][iv[1]] = codebook->v; + } + + s->frame.data[0][iy[2] + 2] = codebook->y0; + s->frame.data[0][iy[2] + 3] = codebook->y0; + s->frame.data[0][iy[3] + 2] = codebook->y0; + s->frame.data[0][iy[3] + 3] = codebook->y0; + if (!s->palette_video) { + s->frame.data[1][iu[1] + 1] = codebook->u; + s->frame.data[2][iv[1] + 1] = codebook->v; + } + + } else if (flag & mask) { + if ((data + 4) > eod) + return -1; + + codebook = &strip->v4_codebook[*data++]; + s->frame.data[0][iy[0] + 0] = codebook->y0; + s->frame.data[0][iy[0] + 1] = codebook->y1; + s->frame.data[0][iy[1] + 0] = codebook->y2; + s->frame.data[0][iy[1] + 1] = codebook->y3; + if (!s->palette_video) { + s->frame.data[1][iu[0]] = codebook->u; + s->frame.data[2][iv[0]] = codebook->v; + } + + codebook = &strip->v4_codebook[*data++]; + s->frame.data[0][iy[0] + 2] = codebook->y0; + s->frame.data[0][iy[0] + 3] = codebook->y1; + s->frame.data[0][iy[1] + 2] = codebook->y2; + s->frame.data[0][iy[1] + 3] = codebook->y3; + if (!s->palette_video) { + s->frame.data[1][iu[0] + 1] = codebook->u; + s->frame.data[2][iv[0] + 1] = codebook->v; + } + + codebook = &strip->v4_codebook[*data++]; + s->frame.data[0][iy[2] + 0] = codebook->y0; + s->frame.data[0][iy[2] + 1] = codebook->y1; + s->frame.data[0][iy[3] + 0] = codebook->y2; + s->frame.data[0][iy[3] + 1] = codebook->y3; + if (!s->palette_video) { + s->frame.data[1][iu[1]] = codebook->u; + s->frame.data[2][iv[1]] = codebook->v; + } + + codebook = &strip->v4_codebook[*data++]; + s->frame.data[0][iy[2] + 2] = codebook->y0; + s->frame.data[0][iy[2] + 3] = codebook->y1; + s->frame.data[0][iy[3] + 2] = codebook->y2; + s->frame.data[0][iy[3] + 3] = codebook->y3; + if (!s->palette_video) { + s->frame.data[1][iu[1] + 1] = codebook->u; + s->frame.data[2][iv[1] + 1] = codebook->v; + } + + } + } else { + /* copy from the previous frame */ + for (i = 0; i < 4; i++) { + for (j = 0; j < 4; j++) { + s->frame.data[0][iy[i] + j] = + s->prev_frame.data[0][iy[i] + j]; + } + } + for (i = 0; i < 2; i++) { + for (j = 0; j < 2; j++) { + s->frame.data[1][iu[i] + j] = + s->prev_frame.data[1][iu[i] + j]; + s->frame.data[2][iv[i] + j] = + s->prev_frame.data[2][iv[i] + j]; + } + } + } + + iy[0] += 4; iy[1] += 4; + iy[2] += 4; iy[3] += 4; + iu[0] += 2; iu[1] += 2; + iv[0] += 2; iv[1] += 2; + } + } + + return 0; +} + +static int cinepak_decode_strip (CinepakContext *s, + cvid_strip_t *strip, uint8_t *data, int size) +{ + uint8_t *eod = (data + size); + int chunk_id, chunk_size; + + /* coordinate sanity checks */ + if (strip->x1 >= s->avctx->width || strip->x2 > s->avctx->width || + strip->y1 >= s->avctx->height || strip->y2 > s->avctx->height || + strip->x1 >= strip->x2 || strip->y1 >= strip->y2) + return -1; + + while ((data + 4) <= eod) { + chunk_id = BE_16 (&data[0]); + chunk_size = BE_16 (&data[2]) - 4; + data += 4; + chunk_size = ((data + chunk_size) > eod) ? (eod - data) : chunk_size; + + switch (chunk_id) { + + case 0x2000: + case 0x2100: + case 0x2400: + case 0x2500: + cinepak_decode_codebook (strip->v4_codebook, chunk_id, + chunk_size, data); + break; + + case 0x2200: + case 0x2300: + case 0x2600: + case 0x2700: + cinepak_decode_codebook (strip->v1_codebook, chunk_id, + chunk_size, data); + break; + + case 0x3000: + case 0x3100: + case 0x3200: + return cinepak_decode_vectors (s, strip, chunk_id, + chunk_size, data); + } + + data += chunk_size; + } + + return -1; +} + +static int cinepak_decode (CinepakContext *s) +{ + uint8_t *eod = (s->data + s->size); + int i, result, strip_size, frame_flags, num_strips; + int y0 = 0; + + if (s->size < 10) + return -1; + + frame_flags = s->data[0]; + num_strips = BE_16 (&s->data[8]); + s->data += 10; + + if (num_strips > MAX_STRIPS) + num_strips = MAX_STRIPS; + + for (i=0; i < num_strips; i++) { + if ((s->data + 12) > eod) + return -1; + + s->strips[i].id = BE_16 (s->data); + s->strips[i].y1 = y0; + s->strips[i].x1 = 0; + s->strips[i].y2 = y0 + BE_16 (&s->data[8]); + s->strips[i].x2 = s->avctx->width; + + strip_size = BE_16 (&s->data[2]) - 12; + s->data += 12; + strip_size = ((s->data + strip_size) > eod) ? (eod - s->data) : strip_size; + + if ((i > 0) && !(frame_flags & 0x01)) { + memcpy (s->strips[i].v4_codebook, s->strips[i-1].v4_codebook, + sizeof(s->strips[i].v4_codebook)); + memcpy (s->strips[i].v1_codebook, s->strips[i-1].v1_codebook, + sizeof(s->strips[i].v1_codebook)); + } + + result = cinepak_decode_strip (s, &s->strips[i], s->data, strip_size); + + if (result != 0) + return result; + + s->data += strip_size; + y0 = s->strips[i].y2; + } + return 0; +} + +static int cinepak_decode_init(AVCodecContext *avctx) +{ + CinepakContext *s = (CinepakContext *)avctx->priv_data; +/* + int i; + unsigned char r, g, b; + unsigned char *raw_palette; + unsigned int *palette32; +*/ + + s->avctx = avctx; + +// check for paletted data +s->palette_video = 0; + + + avctx->pix_fmt = PIX_FMT_YUV420P; + avctx->has_b_frames = 0; + dsputil_init(&s->dsp, avctx); + + s->frame.data[0] = s->prev_frame.data[0] = NULL; + + return 0; +} + +static int cinepak_decode_frame(AVCodecContext *avctx, + void *data, int *data_size, + uint8_t *buf, int buf_size) +{ + CinepakContext *s = (CinepakContext *)avctx->priv_data; + + s->data = buf; + s->size = buf_size; + + if (avctx->get_buffer(avctx, &s->frame)) { + printf (" Cinepak: get_buffer() failed\n"); + return -1; + } + + cinepak_decode(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); + *(AVFrame*)data = s->frame; + + /* report that the buffer was completely consumed */ + return buf_size; +} + +static int cinepak_decode_end(AVCodecContext *avctx) +{ + CinepakContext *s = (CinepakContext *)avctx->priv_data; + + if (s->prev_frame.data[0]) + avctx->release_buffer(avctx, &s->prev_frame); + + return 0; +} + +AVCodec cinepak_decoder = { + "cinepak", + CODEC_TYPE_VIDEO, + CODEC_ID_CINEPAK, + sizeof(CinepakContext), + cinepak_decode_init, + NULL, + cinepak_decode_end, + cinepak_decode_frame, + CODEC_CAP_DR1, +}; diff --git a/libavcodec/msrle.c b/libavcodec/msrle.c new file mode 100644 index 0000000000..8943ef3cdf --- /dev/null +++ b/libavcodec/msrle.c @@ -0,0 +1,219 @@ +/* + * Micrsoft RLE Video Decoder + * Copyright (C) 2003 the ffmpeg project + * + * This library 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. + * + * This library 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 + */ + +/** + * @file msrle.c + * MS RLE Video Decoder by Mike Melanson (melanson@pcisys.net) + * For more information about the MS RLE format, visit: + * http://www.pcisys.net/~melanson/codecs/ + * + * The MS RLE decoder outputs PAL8 colorspace data. + * + * Note that this decoder expects the palette colors from the end of the + * BITMAPINFO header passed through extradata. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "common.h" +#include "avcodec.h" +#include "dsputil.h" + +typedef struct MsrleContext { + AVCodecContext *avctx; + AVFrame frame; + AVFrame prev_frame; + + unsigned char *buf; + int size; + + unsigned int palette[256]; +} MsrleContext; + +#define FETCH_NEXT_STREAM_BYTE() \ + if (stream_ptr >= s->size) \ + { \ + printf(" MS RLE: stream ptr just went out of bounds (1)\n"); \ + return; \ + } \ + stream_byte = s->buf[stream_ptr++]; + +static void msrle_decode_pal8(MsrleContext *s) +{ + int stream_ptr = 0; + unsigned char rle_code; + unsigned char extra_byte; + unsigned char stream_byte; + int pixel_ptr = 0; + int row_dec = s->frame.linesize[0]; + int row_ptr = (s->avctx->height - 1) * row_dec; + int frame_size = row_dec * s->avctx->height; + + while (row_ptr >= 0) { + FETCH_NEXT_STREAM_BYTE(); + rle_code = stream_byte; + if (rle_code == 0) { + /* fetch the next byte to see how to handle escape code */ + FETCH_NEXT_STREAM_BYTE(); + if (stream_byte == 0) { + /* line is done, goto the next one */ + row_ptr -= row_dec; + pixel_ptr = 0; + } else if (stream_byte == 1) { + /* decode is done */ + return; + } else if (stream_byte == 2) { + /* reposition frame decode coordinates */ + FETCH_NEXT_STREAM_BYTE(); + pixel_ptr += stream_byte; + FETCH_NEXT_STREAM_BYTE(); + row_ptr -= stream_byte * row_dec; + } else { + /* copy pixels from encoded stream */ + if ((row_ptr + pixel_ptr + stream_byte > frame_size) || + (row_ptr < 0)) { + printf(" MS RLE: frame ptr just went out of bounds (1)\n"); + return; + } + + rle_code = stream_byte; + extra_byte = stream_byte & 0x01; + if (stream_ptr + rle_code + extra_byte > s->size) { + printf(" MS RLE: stream ptr just went out of bounds (2)\n"); + return; + } + + while (rle_code--) { + FETCH_NEXT_STREAM_BYTE(); + s->frame.data[0][row_ptr + pixel_ptr] = stream_byte; + pixel_ptr++; + } + + /* if the RLE code is odd, skip a byte in the stream */ + if (extra_byte) + stream_ptr++; + } + } else { + /* decode a run of data */ + if ((row_ptr + pixel_ptr + stream_byte > frame_size) || + (row_ptr < 0)) { + printf(" MS RLE: frame ptr just went out of bounds (2)\n"); + return; + } + + FETCH_NEXT_STREAM_BYTE(); + + while(rle_code--) { + s->frame.data[0][row_ptr + pixel_ptr] = stream_byte; + pixel_ptr++; + } + } + } + + /* make the palette available */ + memcpy(s->frame.data[1], s->palette, 256 * 4); + + /* one last sanity check on the way out */ + if (stream_ptr < s->size) + printf(" MS RLE: ended frame decode with bytes left over (%d < %d)\n", + stream_ptr, s->size); +} + +static int msrle_decode_init(AVCodecContext *avctx) +{ + MsrleContext *s = (MsrleContext *)avctx->priv_data; + int i, j; + unsigned char *palette; + + s->avctx = avctx; + + avctx->pix_fmt = PIX_FMT_PAL8; + avctx->has_b_frames = 0; + s->frame.data[0] = s->prev_frame.data[0] = NULL; + + /* convert palette */ + palette = (unsigned char *)s->avctx->extradata; + memset (s->palette, 0, 256 * 4); + for (i = 0, j = 0; i < s->avctx->extradata_size / 4; i++, j += 4) + s->palette[i] = + (palette[j + 2] << 16) | + (palette[j + 1] << 8) | + (palette[j + 0] << 0); + + return 0; +} + +static int msrle_decode_frame(AVCodecContext *avctx, + void *data, int *data_size, + uint8_t *buf, int buf_size) +{ + MsrleContext *s = (MsrleContext *)avctx->priv_data; + + s->buf = buf; + s->size = buf_size; + + if (avctx->get_buffer(avctx, &s->frame)) { + printf (" MS RLE: get_buffer() failed\n"); + return -1; + } + + /* grossly inefficient, but...oh well */ + memcpy(s->frame.data[0], s->prev_frame.data[0], + s->frame.linesize[0] * s->avctx->height); + + msrle_decode_pal8(s); + + if (s->frame.data[0]) + avctx->release_buffer(avctx, &s->frame); + + /* shuffle frames */ + s->prev_frame = s->frame; + + *data_size = sizeof(AVFrame); + *(AVFrame*)data = s->frame; + + /* report that the buffer was completely consumed */ + return buf_size; +} + +static int msrle_decode_end(AVCodecContext *avctx) +{ + MsrleContext *s = (MsrleContext *)avctx->priv_data; + + /* release the last frame */ + if (s->prev_frame.data[0]) + avctx->release_buffer(avctx, &s->prev_frame); + + return 0; +} + +AVCodec msrle_decoder = { + "msrle", + CODEC_TYPE_VIDEO, + CODEC_ID_MSRLE, + sizeof(MsrleContext), + msrle_decode_init, + NULL, + msrle_decode_end, + msrle_decode_frame, + CODEC_CAP_DR1, +}; diff --git a/libavcodec/msvideo1.c b/libavcodec/msvideo1.c new file mode 100644 index 0000000000..71d8af9870 --- /dev/null +++ b/libavcodec/msvideo1.c @@ -0,0 +1,378 @@ +/* + * Microsoft Video-1 Decoder + * Copyright (C) 2003 the ffmpeg project + * + * This library 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. + * + * This library 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 + * + */ + +/** + * @file msvideo1.c + * Microsoft Video-1 Decoder by Mike Melanson (melanson@pcisys.net) + * For more information about the MS Video-1 format, visit: + * http://www.pcisys.net/~melanson/codecs/ + * + * This decoder outputs either PAL8 or RGB555 data, depending on the + * whether a RGB palette was passed through via extradata; if the extradata + * is present, then the data is PAL8; RGB555 otherwise. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "common.h" +#include "avcodec.h" +#include "dsputil.h" + +#define PALETTE_COUNT 256 +#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0]) +#define CHECK_STREAM_PTR(n) \ + if ((stream_ptr + n) > s->size ) { \ + printf (" MS Video-1 warning: stream_ptr out of bounds (%d >= %d)\n", \ + stream_ptr + n, s->size); \ + return; \ + } + +#define COPY_PREV_BLOCK() \ + pixel_ptr = block_ptr; \ + for (pixel_y = 0; pixel_y < 4; pixel_y++) { \ + for (pixel_x = 0; pixel_x < 4; pixel_x++, pixel_ptr++) \ + pixels[pixel_ptr] = prev_pixels[pixel_ptr]; \ + pixel_ptr -= row_dec; \ + } + +typedef struct Msvideo1Context { + + AVCodecContext *avctx; + DSPContext dsp; + AVFrame frame; + AVFrame prev_frame; + + unsigned char *buf; + int size; + + int mode_8bit; /* if it's not 8-bit, it's 16-bit */ + unsigned char palette[PALETTE_COUNT * 4]; + +} Msvideo1Context; + +static int msvideo1_decode_init(AVCodecContext *avctx) +{ + Msvideo1Context *s = (Msvideo1Context *)avctx->priv_data; + int i; + unsigned char r, g, b; + unsigned char *raw_palette; + unsigned int *palette32; + + s->avctx = avctx; + + /* figure out the colorspace based on the presence of a palette in + * extradata */ + if (s->avctx->extradata_size) { + s->mode_8bit = 1; + /* load up the palette */ + palette32 = (unsigned int *)s->palette; + raw_palette = (unsigned char *)s->avctx->extradata; + for (i = 0; i < s->avctx->extradata_size / 4; i++) { + b = *raw_palette++; + g = *raw_palette++; + r = *raw_palette++; + raw_palette++; + palette32[i] = (r << 16) | (g << 8) | (b); + } + avctx->pix_fmt = PIX_FMT_PAL8; + } else { + s->mode_8bit = 0; + avctx->pix_fmt = PIX_FMT_RGB555; + } + + avctx->has_b_frames = 0; + dsputil_init(&s->dsp, avctx); + + s->frame.data[0] = s->prev_frame.data[0] = NULL; + + return 0; +} + +static void msvideo1_decode_8bit(Msvideo1Context *s) +{ + int block_ptr, pixel_ptr; + int total_blocks; + int pixel_x, pixel_y; /* pixel width and height iterators */ + int block_x, block_y; /* block width and height iterators */ + int blocks_wide, blocks_high; /* width and height in 4x4 blocks */ + int block_inc; + int row_dec; + + /* decoding parameters */ + int stream_ptr; + unsigned char byte_a, byte_b; + unsigned short flags; + int skip_blocks; + unsigned char colors[8]; + unsigned char *pixels = s->frame.data[0]; + unsigned char *prev_pixels = s->prev_frame.data[0]; + int stride = s->frame.linesize[0]; + + stream_ptr = 0; + skip_blocks = 0; + blocks_wide = s->avctx->width / 4; + blocks_high = s->avctx->height / 4; + total_blocks = blocks_wide * blocks_high; + block_inc = 4; + row_dec = stride + 4; + + for (block_y = blocks_high; block_y > 0; block_y--) { + block_ptr = ((block_y * 4) - 1) * stride; + for (block_x = blocks_wide; block_x > 0; block_x--) { + /* check if this block should be skipped */ + if (skip_blocks) { + COPY_PREV_BLOCK(); + block_ptr += block_inc; + skip_blocks--; + total_blocks--; + continue; + } + + pixel_ptr = block_ptr; + + /* get the next two bytes in the encoded data stream */ + CHECK_STREAM_PTR(2); + byte_a = s->buf[stream_ptr++]; + byte_b = s->buf[stream_ptr++]; + + /* check if the decode is finished */ + if ((byte_a == 0) && (byte_b == 0) && (total_blocks == 0)) + return; + else if ((byte_b & 0xFC) == 0x84) { + /* skip code, but don't count the current block */ + skip_blocks = ((byte_b - 0x84) << 8) + byte_a - 1; + COPY_PREV_BLOCK(); + } else if (byte_b < 0x80) { + /* 2-color encoding */ + flags = (byte_b << 8) | byte_a; + + CHECK_STREAM_PTR(2); + colors[0] = s->buf[stream_ptr++]; + colors[1] = s->buf[stream_ptr++]; + + for (pixel_y = 0; pixel_y < 4; pixel_y++) { + for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1) + pixels[pixel_ptr++] = colors[(flags & 0x1) ^ 1]; + pixel_ptr -= row_dec; + } + } else if (byte_b >= 0x90) { + /* 8-color encoding */ + flags = (byte_b << 8) | byte_a; + + CHECK_STREAM_PTR(8); + memcpy(colors, &s->buf[stream_ptr], 8); + stream_ptr += 8; + + for (pixel_y = 0; pixel_y < 4; pixel_y++) { + for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1) + pixels[pixel_ptr++] = + colors[((pixel_y & 0x2) << 1) + + (pixel_x & 0x2) + ((flags & 0x1) ^ 1)]; + pixel_ptr -= row_dec; + } + } else { + /* 1-color encoding */ + colors[0] = byte_a; + + for (pixel_y = 0; pixel_y < 4; pixel_y++) { + for (pixel_x = 0; pixel_x < 4; pixel_x++) + pixels[pixel_ptr++] = colors[0]; + pixel_ptr -= row_dec; + } + } + + block_ptr += block_inc; + total_blocks--; + } + } + + /* make the palette available on the way out */ + if (s->avctx->pix_fmt == PIX_FMT_PAL8) + memcpy(s->frame.data[1], s->palette, PALETTE_COUNT * 4); +} + +static void msvideo1_decode_16bit(Msvideo1Context *s) +{ + int block_ptr, pixel_ptr; + int total_blocks; + int pixel_x, pixel_y; /* pixel width and height iterators */ + int block_x, block_y; /* block width and height iterators */ + int blocks_wide, blocks_high; /* width and height in 4x4 blocks */ + int block_inc; + int row_dec; + + /* decoding parameters */ + int stream_ptr; + unsigned char byte_a, byte_b; + unsigned short flags; + int skip_blocks; + unsigned short colors[8]; + unsigned short *pixels = (unsigned short *)s->frame.data[0]; + unsigned short *prev_pixels = (unsigned short *)s->prev_frame.data[0]; + int stride = s->frame.linesize[0] / 2; + + stream_ptr = 0; + skip_blocks = 0; + blocks_wide = s->avctx->width / 4; + blocks_high = s->avctx->height / 4; + total_blocks = blocks_wide * blocks_high; + block_inc = 4; + row_dec = stride + 4; + + for (block_y = blocks_high; block_y > 0; block_y--) { + block_ptr = ((block_y * 4) - 1) * stride; + for (block_x = blocks_wide; block_x > 0; block_x--) { + /* check if this block should be skipped */ + if (skip_blocks) { + COPY_PREV_BLOCK(); + block_ptr += block_inc; + skip_blocks--; + total_blocks--; + continue; + } + + pixel_ptr = block_ptr; + + /* get the next two bytes in the encoded data stream */ + CHECK_STREAM_PTR(2); + byte_a = s->buf[stream_ptr++]; + byte_b = s->buf[stream_ptr++]; + + /* check if the decode is finished */ + if ((byte_a == 0) && (byte_b == 0) && (total_blocks == 0)) { + return; + } else if ((byte_b & 0xFC) == 0x84) { + /* skip code, but don't count the current block */ + skip_blocks = ((byte_b - 0x84) << 8) + byte_a - 1; + COPY_PREV_BLOCK(); + } else if (byte_b < 0x80) { + /* 2- or 8-color encoding modes */ + flags = (byte_b << 8) | byte_a; + + CHECK_STREAM_PTR(4); + colors[0] = LE_16(&s->buf[stream_ptr]); + stream_ptr += 2; + colors[1] = LE_16(&s->buf[stream_ptr]); + stream_ptr += 2; + + if (colors[0] & 0x8000) { + /* 8-color encoding */ + CHECK_STREAM_PTR(12); + colors[2] = LE_16(&s->buf[stream_ptr]); + stream_ptr += 2; + colors[3] = LE_16(&s->buf[stream_ptr]); + stream_ptr += 2; + colors[4] = LE_16(&s->buf[stream_ptr]); + stream_ptr += 2; + colors[5] = LE_16(&s->buf[stream_ptr]); + stream_ptr += 2; + colors[6] = LE_16(&s->buf[stream_ptr]); + stream_ptr += 2; + colors[7] = LE_16(&s->buf[stream_ptr]); + stream_ptr += 2; + + for (pixel_y = 0; pixel_y < 4; pixel_y++) { + for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1) + pixels[pixel_ptr++] = + colors[((pixel_y & 0x2) << 1) + + (pixel_x & 0x2) + ((flags & 0x1) ^ 1)]; + pixel_ptr -= row_dec; + } + } else { + /* 2-color encoding */ + for (pixel_y = 0; pixel_y < 4; pixel_y++) { + for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1) + pixels[pixel_ptr++] = colors[(flags & 0x1) ^ 1]; + pixel_ptr -= row_dec; + } + } + } else { + /* otherwise, it's a 1-color block */ + colors[0] = (byte_b << 8) | byte_a; + + for (pixel_y = 0; pixel_y < 4; pixel_y++) { + for (pixel_x = 0; pixel_x < 4; pixel_x++) + pixels[pixel_ptr++] = colors[0]; + pixel_ptr -= row_dec; + } + } + + block_ptr += block_inc; + total_blocks--; + } + } +} + +static int msvideo1_decode_frame(AVCodecContext *avctx, + void *data, int *data_size, + uint8_t *buf, int buf_size) +{ + Msvideo1Context *s = (Msvideo1Context *)avctx->priv_data; + + s->buf = buf; + s->size = buf_size; + + if (avctx->get_buffer(avctx, &s->frame)) { + printf (" MS Video-1 Video: get_buffer() failed\n"); + return -1; + } + + if (s->mode_8bit) + msvideo1_decode_8bit(s); + else + msvideo1_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); + *(AVFrame*)data = s->frame; + + /* report that the buffer was completely consumed */ + return buf_size; +} + +static int msvideo1_decode_end(AVCodecContext *avctx) +{ + Msvideo1Context *s = (Msvideo1Context *)avctx->priv_data; + + if (s->prev_frame.data[0]) + avctx->release_buffer(avctx, &s->prev_frame); + + return 0; +} + +AVCodec msvideo1_decoder = { + "msvideo1", + CODEC_TYPE_VIDEO, + CODEC_ID_MSVIDEO1, + sizeof(Msvideo1Context), + msvideo1_decode_init, + NULL, + msvideo1_decode_end, + msvideo1_decode_frame, + CODEC_CAP_DR1, +}; diff --git a/libavcodec/rpza.c b/libavcodec/rpza.c new file mode 100644 index 0000000000..8027cfd9ab --- /dev/null +++ b/libavcodec/rpza.c @@ -0,0 +1,310 @@ +/* + * Quicktime Video (RPZA) Video Decoder + * Copyright (C) 2003 the ffmpeg project + * + * This library 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. + * + * This library 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 + * + */ + +/** + * @file rpza.c + * QT RPZA Video Decoder by Roberto Togni <rtogni@bresciaonline.it> + * For more information about the RPZA format, visit: + * http://www.pcisys.net/~melanson/codecs/ + * + * The RPZA decoder outputs RGB555 colorspace data. + * + * Note that this decoder reads big endian RGB555 pixel values from the + * bytestream, arranges them in the host's endian order, and outputs + * them to the final rendered map in the same host endian order. This is + * intended behavior as the ffmpeg documentation states that RGB555 pixels + * shall be stored in native CPU endianness. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "common.h" +#include "avcodec.h" +#include "dsputil.h" + +typedef struct RpzaContext { + + AVCodecContext *avctx; + DSPContext dsp; + AVFrame frame; + AVFrame prev_frame; + + unsigned char *buf; + int size; + +} RpzaContext; + +#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1]) +#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \ + (((uint8_t*)(x))[1] << 16) | \ + (((uint8_t*)(x))[2] << 8) | \ + ((uint8_t*)(x))[3]) + +#define ADVANCE_BLOCK() \ +{ \ + pixel_ptr += 4; \ + if (pixel_ptr >= width) \ + { \ + pixel_ptr = 0; \ + row_ptr += stride * 4; \ + } \ + total_blocks--; \ + if (total_blocks < 0) \ + { \ + printf("warning: block counter just went negative (this should not happen)\n"); \ + return; \ + } \ +} + +static void rpza_decode_stream(RpzaContext *s) +{ + int width = s->avctx->width; + int stride = s->frame.linesize[0] / 2; + int row_inc = stride - 4; + int stream_ptr = 0; + int chunk_size; + unsigned char opcode; + int n_blocks; + unsigned short colorA = 0, colorB; + unsigned short color4[4]; + unsigned char index, idx; + unsigned short ta, tb; + unsigned short *pixels = (unsigned short *)s->frame.data[0]; + unsigned short *prev_pixels = (unsigned short *)s->prev_frame.data[0]; + + int row_ptr = 0; + int pixel_ptr = 0; + int block_ptr; + int pixel_x, pixel_y; + int total_blocks; + + /* First byte is always 0xe1. Warn if it's different */ + if (s->buf[stream_ptr] != 0xe1) + printf("First chunk byte is 0x%02x instead of 0x1e\n", + s->buf[stream_ptr]); + + /* Get chunk size, ingnoring first byte */ + chunk_size = BE_32(&s->buf[stream_ptr]) & 0x00FFFFFF; + stream_ptr += 4; + + /* If length mismatch use size from MOV file and try to decode anyway */ + if (chunk_size != s->size) + printf("MOV chunk size != encoded chunk size; using MOV chunk size\n"); + + chunk_size = s->size; + + /* Number of 4x4 blocks in frame. */ + total_blocks = (s->avctx->width * s->avctx->height) / (4 * 4); + + /* Process chunk data */ + while (stream_ptr < chunk_size) { + opcode = s->buf[stream_ptr++]; /* Get opcode */ + + n_blocks = (opcode & 0x1f) + 1; /* Extract block counter from opcode */ + + /* If opcode MSbit is 0, we need more data to decide what to do */ + if ((opcode & 0x80) == 0) { + colorA = (opcode << 8) | (s->buf[stream_ptr++]); + opcode = 0; + if ((s->buf[stream_ptr] & 0x80) != 0) { + /* Must behave as opcode 110xxxxx, using colorA computed + * above. Use fake opcode 0x20 to enter switch block at + * the right place */ + opcode = 0x20; + n_blocks = 1; + } + } + + switch (opcode & 0xe0) { + + /* Skip blocks */ + case 0x80: + while (n_blocks--) { + block_ptr = row_ptr + pixel_ptr; + for (pixel_y = 0; pixel_y < 4; pixel_y++) { + for (pixel_x = 0; pixel_x < 4; pixel_x++){ + pixels[block_ptr] = prev_pixels[block_ptr]; + block_ptr++; + } + block_ptr += row_inc; + } + ADVANCE_BLOCK(); + } + break; + + /* Fill blocks with one color */ + case 0xa0: + colorA = BE_16 (&s->buf[stream_ptr]); + stream_ptr += 2; + while (n_blocks--) { + block_ptr = row_ptr + pixel_ptr; + for (pixel_y = 0; pixel_y < 4; pixel_y++) { + for (pixel_x = 0; pixel_x < 4; pixel_x++){ + pixels[block_ptr] = colorA; + block_ptr++; + } + block_ptr += row_inc; + } + ADVANCE_BLOCK(); + } + break; + + /* Fill blocks with 4 colors */ + case 0xc0: + colorA = BE_16 (&s->buf[stream_ptr]); + stream_ptr += 2; + case 0x20: + colorB = BE_16 (&s->buf[stream_ptr]); + stream_ptr += 2; + + /* sort out the colors */ + color4[0] = colorB; + color4[1] = 0; + color4[2] = 0; + color4[3] = colorA; + + /* red components */ + ta = (colorA >> 10) & 0x1F; + tb = (colorB >> 10) & 0x1F; + color4[1] |= ((11 * ta + 21 * tb) >> 5) << 10; + color4[2] |= ((21 * ta + 11 * tb) >> 5) << 10; + + /* green components */ + ta = (colorA >> 5) & 0x1F; + tb = (colorB >> 5) & 0x1F; + color4[1] |= ((11 * ta + 21 * tb) >> 5) << 5; + color4[2] |= ((21 * ta + 11 * tb) >> 5) << 5; + + /* blue components */ + ta = colorA & 0x1F; + tb = colorB & 0x1F; + color4[1] |= ((11 * ta + 21 * tb) >> 5); + color4[2] |= ((21 * ta + 11 * tb) >> 5); + + while (n_blocks--) { + block_ptr = row_ptr + pixel_ptr; + for (pixel_y = 0; pixel_y < 4; pixel_y++) { + index = s->buf[stream_ptr++]; + for (pixel_x = 0; pixel_x < 4; pixel_x++){ + idx = (index >> (2 * (3 - pixel_x))) & 0x03; + pixels[block_ptr] = color4[idx]; + block_ptr++; + } + block_ptr += row_inc; + } + ADVANCE_BLOCK(); + } + break; + + /* Fill block with 16 colors */ + case 0x00: + block_ptr = row_ptr + pixel_ptr; + for (pixel_y = 0; pixel_y < 4; pixel_y++) { + for (pixel_x = 0; pixel_x < 4; pixel_x++){ + /* We already have color of upper left pixel */ + if ((pixel_y != 0) || (pixel_x !=0)) { + colorA = BE_16 (&s->buf[stream_ptr]); + stream_ptr += 2; + } + pixels[block_ptr] = colorA; + block_ptr++; + } + block_ptr += row_inc; + } + ADVANCE_BLOCK(); + break; + + /* Unknown opcode */ + default: + printf("Unknown opcode %d in rpza chunk." + " Skip remaining %d bytes of chunk data.\n", opcode, + chunk_size - stream_ptr); + return; + } /* Opcode switch */ + } +} + +static int rpza_decode_init(AVCodecContext *avctx) +{ + RpzaContext *s = (RpzaContext *)avctx->priv_data; + + s->avctx = avctx; + avctx->pix_fmt = PIX_FMT_RGB555; + avctx->has_b_frames = 0; + dsputil_init(&s->dsp, avctx); + + s->frame.data[0] = s->prev_frame.data[0] = NULL; + + return 0; +} + +static int rpza_decode_frame(AVCodecContext *avctx, + void *data, int *data_size, + uint8_t *buf, int buf_size) +{ + RpzaContext *s = (RpzaContext *)avctx->priv_data; + + s->buf = buf; + s->size = buf_size; + + if (avctx->get_buffer(avctx, &s->frame)) { + printf (" RPZA Video: get_buffer() failed\n"); + return -1; + } + + rpza_decode_stream(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); + *(AVFrame*)data = s->frame; + + /* always report that the buffer was completely consumed */ + return buf_size; +} + +static int rpza_decode_end(AVCodecContext *avctx) +{ + RpzaContext *s = (RpzaContext *)avctx->priv_data; + + if (s->prev_frame.data[0]) + avctx->release_buffer(avctx, &s->prev_frame); + + return 0; +} + +AVCodec rpza_decoder = { + "rpza", + CODEC_TYPE_VIDEO, + CODEC_ID_RPZA, + sizeof(RpzaContext), + rpza_decode_init, + NULL, + rpza_decode_end, + rpza_decode_frame, + CODEC_CAP_DR1, +}; |