[FFmpeg-devel] [PATCH] PAF demuxer and decoder
Paul B Mahol
onemda at gmail.com
Mon Jul 2 04:28:32 CEST 2012
Signed-off-by: Paul B Mahol <onemda at gmail.com>
---
doc/general.texi | 4 +
libavcodec/Makefile | 2 +
libavcodec/allcodecs.c | 2 +
libavcodec/avcodec.h | 2 +
libavcodec/paf.c | 447 ++++++++++++++++++++++++++++++++++++++++++++++
libavcodec/paf.h | 28 +++
libavformat/Makefile | 1 +
libavformat/allformats.c | 1 +
libavformat/paf.c | 253 ++++++++++++++++++++++++++
9 files changed, 740 insertions(+), 0 deletions(-)
create mode 100644 libavcodec/paf.c
create mode 100644 libavcodec/paf.h
create mode 100644 libavformat/paf.c
diff --git a/doc/general.texi b/doc/general.texi
index 2ca10cd..8d1293b 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -127,6 +127,8 @@ library:
@item American Laser Games MM @tab @tab X
@tab Multimedia format used in games like Mad Dog McCree.
@item 3GPP AMR @tab X @tab X
+ at item Amazing Studio Packed Animation File @tab @tab X
+ @tab Multimedia format used in game Heart Of Darkness.
@item Apple HTTP Live Streaming @tab @tab X
@item Artworx Data Format @tab @tab X
@item ASF @tab X @tab X
@@ -441,6 +443,7 @@ following image formats are supported:
@item 8SVX fibonacci @tab @tab X
@item A64 multicolor @tab X @tab
@tab Creates video suitable to be played on a commodore 64 (multicolor mode).
+ at item Amazing Studio PAF Video @tab @tab X
@item American Laser Games MM @tab @tab X
@tab Used in games like Mad Dog McCree.
@item AMV Video @tab X @tab X
@@ -733,6 +736,7 @@ following image formats are supported:
@tab encoding supported through external library libopencore-amrnb
@item AMR-WB @tab E @tab X
@tab encoding supported through external library libvo-amrwbenc
+ at item Amazing Studio PAF Audio @tab @tab X
@item Apple lossless audio @tab X @tab X
@tab QuickTime fourcc 'alac'
@item Atrac 1 @tab @tab X
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index e8fac7e..b054879 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -336,6 +336,8 @@ OBJS-$(CONFIG_NELLYMOSER_DECODER) += nellymoserdec.o nellymoser.o
OBJS-$(CONFIG_NELLYMOSER_ENCODER) += nellymoserenc.o nellymoser.o \
audio_frame_queue.o
OBJS-$(CONFIG_NUV_DECODER) += nuv.o rtjpeg.o
+OBJS-$(CONFIG_PAF_VIDEO_DECODER) += paf.o
+OBJS-$(CONFIG_PAF_AUDIO_DECODER) += paf.o
OBJS-$(CONFIG_PAM_DECODER) += pnmdec.o pnm.o
OBJS-$(CONFIG_PAM_ENCODER) += pamenc.o pnm.o
OBJS-$(CONFIG_PBM_DECODER) += pnmdec.o pnm.o
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 51e603e..55ba846 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -175,6 +175,7 @@ void avcodec_register_all(void)
REGISTER_DECODER (MSZH, mszh);
REGISTER_DECODER (MXPEG, mxpeg);
REGISTER_DECODER (NUV, nuv);
+ REGISTER_DECODER (PAF_VIDEO, paf_video);
REGISTER_ENCDEC (PAM, pam);
REGISTER_ENCDEC (PBM, pbm);
REGISTER_ENCDEC (PCX, pcx);
@@ -308,6 +309,7 @@ void avcodec_register_all(void)
REGISTER_ENCDEC (NELLYMOSER, nellymoser);
REGISTER_DECODER (QCELP, qcelp);
REGISTER_DECODER (QDM2, qdm2);
+ REGISTER_DECODER (PAF_AUDIO, paf_audio);
REGISTER_ENCDEC (RA_144, ra_144);
REGISTER_DECODER (RA_288, ra_288);
REGISTER_DECODER (RALF, ralf);
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 8aa939b..b0ab327 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -270,6 +270,7 @@ enum CodecID {
CODEC_ID_V408 = MKBETAG('V','4','0','8'),
CODEC_ID_YUV4 = MKBETAG('Y','U','V','4'),
CODEC_ID_SANM = MKBETAG('S','A','N','M'),
+ CODEC_ID_PAF_VIDEO = MKBETAG('P','A','F','V'),
/* various PCM "codecs" */
CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs
@@ -415,6 +416,7 @@ enum CodecID {
CODEC_ID_8SVX_RAW = MKBETAG('8','S','V','X'),
CODEC_ID_SONIC = MKBETAG('S','O','N','C'),
CODEC_ID_SONIC_LS = MKBETAG('S','O','N','L'),
+ CODEC_ID_PAF_AUDIO = MKBETAG('P','A','F','A'),
/* subtitle codecs */
CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs.
diff --git a/libavcodec/paf.c b/libavcodec/paf.c
new file mode 100644
index 0000000..39f2c09
--- /dev/null
+++ b/libavcodec/paf.c
@@ -0,0 +1,447 @@
+/*
+ * Packed Animation File video and audio decoder
+ * Copyright (c) 2012 Paul B Mahol
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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,
+ * 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/intreadwrite.h"
+#include "libavcodec/dsputil.h"
+#include "libavcodec/paf.h"
+#include "bytestream.h"
+#include "avcodec.h"
+
+static const uint8_t block_sequences[16][8] =
+{
+ { 0, 0, 0, 0, 0, 0, 0, 0 },
+ { 2, 0, 0, 0, 0, 0, 0, 0 },
+ { 5, 7, 0, 0, 0, 0, 0, 0 },
+ { 5, 0, 0, 0, 0, 0, 0, 0 },
+ { 6, 0, 0, 0, 0, 0, 0, 0 },
+ { 5, 7, 5, 7, 0, 0, 0, 0 },
+ { 5, 7, 5, 0, 0, 0, 0, 0 },
+ { 5, 7, 6, 0, 0, 0, 0, 0 },
+ { 5, 5, 0, 0, 0, 0, 0, 0 },
+ { 3, 0, 0, 0, 0, 0, 0, 0 },
+ { 6, 6, 0, 0, 0, 0, 0, 0 },
+ { 2, 4, 0, 0, 0, 0, 0, 0 },
+ { 2, 4, 5, 7, 0, 0, 0, 0 },
+ { 2, 4, 5, 0, 0, 0, 0, 0 },
+ { 2, 4, 6, 0, 0, 0, 0, 0 },
+ { 2, 4, 5, 7, 5, 7, 0, 0 }
+};
+
+typedef struct PAFVideoDecContext {
+ AVFrame pic;
+ GetByteContext gb;
+
+ int current_frame;
+ uint8_t *frame[4];
+ int frame_size;
+ int video_size;
+
+ uint8_t *opcodes;
+} PAFVideoDecContext;
+
+static av_cold int paf_vid_init(AVCodecContext *avctx)
+{
+ PAFVideoDecContext *c = avctx->priv_data;
+ int i;
+
+ avctx->pix_fmt = PIX_FMT_PAL8;
+
+ avcodec_get_frame_defaults(&c->pic);
+ c->frame_size = FFALIGN(avctx->height, 256) * avctx->width;
+ c->video_size = avctx->height * avctx->width;
+ for (i = 0; i < 4; i++) {
+ c->frame[i] = av_mallocz(c->frame_size);
+ if (!c->frame[i])
+ return AVERROR(ENOMEM);
+ }
+
+ return 0;
+}
+
+static int get_video_page_offset(AVCodecContext *avctx, uint8_t a, uint8_t b)
+{
+ int x, y;
+
+ x = b & 0x7F;
+ y = ((a & 0x3F) << 1) | (b >> 7 & 1);
+
+ return y * 2 * avctx->width + x * 2;
+}
+
+static void copy4h(AVCodecContext *avctx, uint8_t *dst)
+{
+ PAFVideoDecContext *c = avctx->priv_data;
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ bytestream2_get_buffer(&c->gb, dst, 4);
+ dst += avctx->width;
+ }
+}
+
+static void copy_color_mask(AVCodecContext *avctx, uint8_t mask, uint8_t *dst, uint8_t color)
+{
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ if ((mask >> 4) & (1 << (3 - i)))
+ dst[i] = color;
+ if ((mask & 15) & (1 << (3 - i)))
+ dst[avctx->width + i] = color;
+ }
+
+}
+
+static void copy_src_mask(AVCodecContext *avctx, uint8_t mask, uint8_t *dst, const uint8_t *src)
+{
+ int i;
+
+ for (i = 0; i < 4; i++) {
+ if ((mask >> 4) & (1 << (3 - i)))
+ dst[i] = src[i];
+ if ((mask & 15) & (1 << (3 - i)))
+ dst[avctx->width + i] = src[avctx->width + i];
+ }
+}
+
+static int decode_0(AVCodecContext *avctx, uint8_t code, uint8_t *pkt)
+{
+ PAFVideoDecContext *c = avctx->priv_data;
+ uint32_t opcode_size, offset;
+ uint8_t *dst, *dend, mask = 0, color = 0, a, b, p;
+ const uint8_t *src, *send, *opcodes;
+ int cnt, i, j, x = 0;
+
+ cnt = bytestream2_get_byte(&c->gb);
+ if (cnt) {
+ if (code & 0x10) {
+ int align;
+
+ align = bytestream2_tell(&c->gb) & 3;
+ if (align)
+ bytestream2_skip(&c->gb, 4 - align);
+ }
+ do {
+ uint32_t cnt;
+
+ a = bytestream2_get_byte(&c->gb);
+ b = bytestream2_get_byte(&c->gb);
+ p = (a & 0xC0) >> 6;
+ dst = c->frame[p] + get_video_page_offset(avctx, a, b);
+ dend = c->frame[p] + c->frame_size;
+ offset = (b & 0x7F) * 2;
+ cnt = bytestream2_get_le16(&c->gb) + offset;
+
+ do {
+ offset++;
+ if (dst + 3 * avctx->width + 4 > dend)
+ return AVERROR_INVALIDDATA;
+ copy4h(avctx, dst);
+ if ((offset & 0x3F) == 0)
+ dst += avctx->width * 3;
+ dst += 4;
+ } while (offset < cnt);
+ } while (--cnt);
+ }
+
+ dst = c->frame[c->current_frame];
+ do {
+ a = bytestream2_get_byte(&c->gb);
+ b = bytestream2_get_byte(&c->gb);
+ p = (a & 0xC0) >> 6;
+ src = c->frame[p] + get_video_page_offset(avctx, a, b);
+ send = c->frame[p] + c->frame_size;
+ if (src + 3 * avctx->width + 4 > send)
+ return AVERROR_INVALIDDATA;
+ copy_block4(dst, src, avctx->width, avctx->width, 4);
+ cnt++;
+ if ((cnt & 0x3F) == 0)
+ dst += avctx->width * 3;
+ dst += 4;
+ } while (cnt < c->video_size / 16);
+
+ opcode_size = bytestream2_get_le16(&c->gb);
+ bytestream2_skip(&c->gb, 2);
+
+ if (bytestream2_get_bytes_left(&c->gb) < opcode_size)
+ return AVERROR_INVALIDDATA;
+
+ opcodes = pkt + bytestream2_tell(&c->gb);
+ bytestream2_skipu(&c->gb, opcode_size);
+
+ dst = c->frame[c->current_frame];
+
+ for (i = 0; i < avctx->height; i += 4, dst += avctx->width * 3) {
+ for (j = 0; j < avctx->width; j += 4, dst += 4) {
+ int opcode, k = 0;
+
+ if (x > opcode_size)
+ return AVERROR_INVALIDDATA;
+ if (j & 4) {
+ opcode = opcodes[x] & 15;
+ x++;
+ } else {
+ opcode = opcodes[x] >> 4;
+ }
+
+ while (block_sequences[opcode][k]) {
+
+ offset = avctx->width * 2;
+ code = block_sequences[opcode][k++];
+
+ switch (code) {
+ case 2:
+ offset = 0;
+ case 3:
+ color = bytestream2_get_byte(&c->gb);
+ case 4:
+ mask = bytestream2_get_byte(&c->gb);
+ copy_color_mask(avctx, mask, dst + offset, color);
+ break;
+ case 5:
+ offset = 0;
+ case 6:
+ a = bytestream2_get_byte(&c->gb);
+ b = bytestream2_get_byte(&c->gb);
+ p = (a & 0xC0) >> 6;
+ src = c->frame[p] + get_video_page_offset(avctx, a, b);
+ send = c->frame[p] + c->frame_size;
+ case 7:
+ if (src + offset + avctx->width + 4 > send)
+ return AVERROR_INVALIDDATA;
+ mask = bytestream2_get_byte(&c->gb);
+ copy_src_mask(avctx, mask, dst + offset, src + offset);
+ break;
+ }
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int paf_vid_decode(AVCodecContext *avctx, void *data,
+ int *data_size, AVPacket *pkt)
+{
+ PAFVideoDecContext *c = avctx->priv_data;
+ uint8_t code, *dst, *src, *end;
+ int i, frame, ret;
+
+ if (c->pic.data[0])
+ avctx->release_buffer(avctx, &c->pic);
+
+ c->pic.reference = 0;
+ if ((ret = avctx->get_buffer(avctx, &c->pic)) < 0)
+ return ret;
+
+ bytestream2_init(&c->gb, pkt->data, pkt->size);
+
+ code = bytestream2_get_byte(&c->gb);
+ if (code & 0x20) {
+ for (i = 0; i < 4; i++)
+ memset(c->frame[i], 0, c->frame_size);
+
+ memset(c->pic.data[1], 0, AVPALETTE_SIZE);
+ c->current_frame = 0;
+ }
+
+ if (code & 0x40) {
+ uint32_t *out = (uint32_t *)c->pic.data[1];
+ int index, count;
+
+ index = bytestream2_get_byte(&c->gb);
+ count = bytestream2_get_byte(&c->gb) + 1;
+
+ if (index + count > AVPALETTE_SIZE)
+ return AVERROR_INVALIDDATA;
+ if (bytestream2_get_bytes_left(&c->gb) < 3 * AVPALETTE_SIZE)
+ return AVERROR_INVALIDDATA;
+
+ out += index;
+ for (i = 0; i < count; i++) {
+ unsigned r, g, b;
+
+ r = bytestream2_get_byteu(&c->gb);
+ r = r << 2 | r >> 4;
+ g = bytestream2_get_byteu(&c->gb);
+ g = g << 2 | g >> 4;
+ b = bytestream2_get_byteu(&c->gb);
+ b = b << 2 | b >> 4;
+ *out++ = 0xFFU << 24 | r << 16 | g << 8 | b;
+ }
+ c->pic.palette_has_changed = 1;
+ }
+
+ switch (code & 0x0F) {
+ case 0:
+ if ((ret = decode_0(avctx, code, pkt->data)) < 0)
+ return ret;
+ break;
+ case 1:
+ dst = c->frame[c->current_frame];
+ bytestream2_skip(&c->gb, 2);
+ if (bytestream2_get_bytes_left(&c->gb) < c->video_size)
+ return AVERROR_INVALIDDATA;
+ bytestream2_get_bufferu(&c->gb, dst, c->video_size);
+ break;
+ case 2:
+ frame = bytestream2_get_byte(&c->gb);
+ if (frame > 3)
+ return AVERROR_INVALIDDATA;
+ if (frame != c->current_frame)
+ memcpy(c->frame[c->current_frame], c->frame[frame], c->frame_size);
+ break;
+ case 4:
+ dst = c->frame[c->current_frame];
+ end = dst + c->video_size;
+
+ bytestream2_skip(&c->gb, 2);
+
+ while (dst < end) {
+ int8_t code;
+ int count;
+
+ if (bytestream2_get_bytes_left(&c->gb) < 2)
+ return AVERROR_INVALIDDATA;
+
+ code = bytestream2_get_byteu(&c->gb);
+ count = FFABS(code) + 1;
+
+ if (dst + count > end)
+ return AVERROR_INVALIDDATA;
+ if (code < 0)
+ memset(dst, bytestream2_get_byteu(&c->gb), count);
+ else
+ bytestream2_get_buffer(&c->gb, dst, count);
+ dst += count;
+ }
+ break;
+ default:
+ av_log_ask_for_sample(avctx, "unknown/invalid code\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ dst = c->pic.data[0];
+ src = c->frame[c->current_frame];
+ for (i = 0; i < avctx->height; i++) {
+ memcpy(dst, src, avctx->width);
+ dst += c->pic.linesize[0];
+ src += avctx->width;
+ }
+
+ c->current_frame = (c->current_frame + 1) & 3;
+
+ *data_size = sizeof(AVFrame);
+ *(AVFrame *)data = c->pic;
+
+ return pkt->size;
+}
+
+static av_cold int paf_vid_close(AVCodecContext *avctx)
+{
+ PAFVideoDecContext *c = avctx->priv_data;
+ int i;
+
+ if (c->pic.data[0])
+ avctx->release_buffer(avctx, &c->pic);
+
+ for (i = 0; i < 4; i++)
+ av_freep(&c->frame[i]);
+
+ return 0;
+}
+
+typedef struct PAFAudioDecContext {
+ AVFrame frame;
+} PAFAudioDecContext;
+
+static av_cold int paf_aud_init(AVCodecContext *avctx)
+{
+ PAFAudioDecContext *c = avctx->priv_data;
+
+ if (avctx->channels != 2) {
+ av_log(avctx, AV_LOG_ERROR, "invalid number of channels\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ avcodec_get_frame_defaults(&c->frame);
+ avctx->channel_layout = AV_CH_LAYOUT_STEREO;
+ avctx->coded_frame = &c->frame;
+ avctx->sample_fmt = AV_SAMPLE_FMT_S16;
+
+ return 0;
+}
+
+static int paf_aud_decode(AVCodecContext *avctx, void *data,
+ int *got_frame_ptr, AVPacket *pkt)
+{
+ PAFAudioDecContext *c = avctx->priv_data;
+ uint8_t *buf = pkt->data;
+ int16_t *output_samples;
+ const uint8_t *t;
+ int frames, ret, i, j, k;
+
+ frames = pkt->size / PAF_SOUND_FRAME_SIZE;
+ if (frames < 1)
+ return AVERROR_INVALIDDATA;
+
+ c->frame.nb_samples = PAF_SOUND_SAMPLES * frames;
+ if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0)
+ return ret;
+
+ output_samples = (int16_t *)c->frame.data[0];
+ for (i = 0; i < frames; i++) {
+ t = buf + 256 * sizeof(uint16_t);
+ for (j = 0; j < PAF_SOUND_SAMPLES; j++) {
+ for (k = 0; k < 2; k++) {
+ *output_samples++ = AV_RL16(buf + *t++ * 2);
+ }
+ }
+ buf += PAF_SOUND_FRAME_SIZE;
+ }
+
+ *got_frame_ptr = 1;
+ *(AVFrame *)data = c->frame;
+
+ return pkt->size;
+}
+
+AVCodec ff_paf_video_decoder = {
+ .name = "paf_video",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_PAF_VIDEO,
+ .priv_data_size = sizeof(PAFVideoDecContext),
+ .init = paf_vid_init,
+ .close = paf_vid_close,
+ .decode = paf_vid_decode,
+ .long_name = NULL_IF_CONFIG_SMALL("Amazing Studio Packed Animation File Video"),
+};
+
+AVCodec ff_paf_audio_decoder = {
+ .name = "paf_audio",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = CODEC_ID_PAF_AUDIO,
+ .priv_data_size = sizeof(PAFAudioDecContext),
+ .init = paf_aud_init,
+ .decode = paf_aud_decode,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Amazing Studio Packed Animation File Audio"),
+};
diff --git a/libavcodec/paf.h b/libavcodec/paf.h
new file mode 100644
index 0000000..ce8245f
--- /dev/null
+++ b/libavcodec/paf.h
@@ -0,0 +1,28 @@
+/*
+ * Packed Animation File decoder/demuxer common code
+ * Copyright (c) 2012 Paul B Mahol
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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,
+ * 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_PAF_H
+#define AVCODEC_PAF_H
+
+#define PAF_SOUND_SAMPLES 2205
+#define PAF_SOUND_FRAME_SIZE ((256 + PAF_SOUND_SAMPLES) * 2)
+
+#endif /* AVCODEC_PAF_H */
diff --git a/libavformat/Makefile b/libavformat/Makefile
index 9eaf28a..54b26c1 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -209,6 +209,7 @@ OBJS-$(CONFIG_OGG_MUXER) += oggenc.o \
vorbiscomment.o
OBJS-$(CONFIG_OMA_DEMUXER) += omadec.o pcm.o oma.o
OBJS-$(CONFIG_OMA_MUXER) += omaenc.o rawenc.o oma.o id3v2enc.o
+OBJS-$(CONFIG_PAF_DEMUXER) += paf.o
OBJS-$(CONFIG_PCM_ALAW_DEMUXER) += pcmdec.o pcm.o rawdec.o
OBJS-$(CONFIG_PCM_ALAW_MUXER) += pcmenc.o rawenc.o
OBJS-$(CONFIG_PCM_F32BE_DEMUXER) += pcmdec.o pcm.o rawdec.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 231b0cb..7ea4ebb 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -173,6 +173,7 @@ void av_register_all(void)
REGISTER_DEMUXER (NUV, nuv);
REGISTER_MUXDEMUX (OGG, ogg);
REGISTER_MUXDEMUX (OMA, oma);
+ REGISTER_DEMUXER (PAF, paf);
REGISTER_MUXDEMUX (PCM_ALAW, pcm_alaw);
REGISTER_MUXDEMUX (PCM_MULAW, pcm_mulaw);
REGISTER_MUXDEMUX (PCM_F64BE, pcm_f64be);
diff --git a/libavformat/paf.c b/libavformat/paf.c
new file mode 100644
index 0000000..0163600
--- /dev/null
+++ b/libavformat/paf.c
@@ -0,0 +1,253 @@
+/*
+ * Packed Animation File demuxer
+ * Copyright (c) 2012 Paul B Mahol
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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,
+ * 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavcodec/paf.h"
+#include "avformat.h"
+#include "internal.h"
+
+#define MAGIC "Packed Animation File V1.0\n(c) 1992-96 Amazing Studio\x0a\x1a"
+
+typedef struct {
+ uint32_t buffer_size;
+ uint32_t frame_blks;
+ uint32_t nb_frames;
+ uint32_t start_offset;
+ uint32_t preload_count;
+ uint32_t max_video_blks;
+ uint32_t max_audio_blks;
+
+ uint32_t current_frame;
+ uint32_t current_frame_count;
+ uint32_t current_frame_block;
+
+ uint32_t *blocks_count_table;
+ uint32_t *frames_offset_table;
+ uint32_t *blocks_offset_table;
+
+ uint8_t *video_frame;
+ int video_size;
+
+ uint8_t *audio_frame;
+ uint8_t *temp_audio_frame;
+ int audio_size;
+
+ int got_audio;
+} PAFDemuxContext;
+
+static int read_probe(AVProbeData *p)
+{
+ if ((p->buf_size >= strlen(MAGIC)) &&
+ !memcmp(p->buf, MAGIC, strlen(MAGIC)))
+ return AVPROBE_SCORE_MAX;
+ return 0;
+}
+
+static int read_close(AVFormatContext *s)
+{
+ PAFDemuxContext *p = s->priv_data;
+
+ av_freep(&p->blocks_count_table);
+ av_freep(&p->frames_offset_table);
+ av_freep(&p->blocks_offset_table);
+ av_freep(&p->video_frame);
+ av_freep(&p->audio_frame);
+ av_freep(&p->temp_audio_frame);
+
+ return 0;
+}
+
+static void read_table(AVFormatContext *s, uint32_t *table, uint32_t count)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ table[i] = avio_rl32(s->pb);
+
+ avio_skip(s->pb, 4 * (FFALIGN(count, 512) - count));
+}
+
+static int read_header(AVFormatContext *s)
+{
+ PAFDemuxContext *p = s->priv_data;
+ AVIOContext *pb = s->pb;
+ AVStream *ast, *vst;
+ int ret = 0;
+
+ avio_skip(pb, 132);
+
+ vst = avformat_new_stream(s, 0);
+ if (!vst)
+ return AVERROR(ENOMEM);
+
+ vst->start_time = 0;
+ vst->nb_frames =
+ vst->duration =
+ p->nb_frames = avio_rl32(pb);
+ avio_skip(pb, 4);
+ vst->codec->width = avio_rl32(pb);
+ vst->codec->height = avio_rl32(pb);
+ avio_skip(pb, 4);
+ vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ vst->codec->codec_tag = 0;
+ vst->codec->codec_id = CODEC_ID_PAF_VIDEO;
+ avpriv_set_pts_info(vst, 64, 1, 10);
+
+ ast = avformat_new_stream(s, 0);
+ if (!ast)
+ return AVERROR(ENOMEM);
+
+ ast->start_time = 0;
+ ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+ ast->codec->codec_tag = 0;
+ ast->codec->codec_id = CODEC_ID_PAF_AUDIO;
+ ast->codec->channels = 2;
+ ast->codec->sample_rate = 22050;
+ avpriv_set_pts_info(ast, 64, 1, 22050);
+
+ p->buffer_size = avio_rl32(pb);
+ if (p->buffer_size < 175 || p->buffer_size > 2048)
+ return AVERROR_INVALIDDATA;
+
+ p->preload_count = avio_rl32(pb);
+ p->frame_blks = avio_rl32(pb);
+ p->start_offset = avio_rl32(pb);
+ p->max_video_blks = avio_rl32(pb);
+ p->max_audio_blks = avio_rl32(pb);
+ if (p->max_audio_blks < 1 ||
+ p->max_video_blks < 1 ||
+ p->frame_blks < 1 ||
+ p->nb_frames < 1 ||
+ p->preload_count < 1)
+ return AVERROR_INVALIDDATA;
+
+ p->blocks_count_table = av_mallocz(p->nb_frames * sizeof(uint32_t));
+ p->frames_offset_table = av_mallocz(p->nb_frames * sizeof(uint32_t));
+ p->blocks_offset_table = av_mallocz(p->frame_blks * sizeof(uint32_t));
+
+ p->video_size = p->max_video_blks * p->buffer_size;
+ p->video_frame = av_mallocz(p->video_size);
+
+ p->audio_size = p->max_audio_blks * p->buffer_size;
+ p->audio_frame = av_mallocz(p->audio_size);
+ p->temp_audio_frame = av_mallocz(p->audio_size);
+
+ if (!p->blocks_count_table ||
+ !p->frames_offset_table ||
+ !p->blocks_offset_table ||
+ !p->video_frame ||
+ !p->audio_frame ||
+ !p->temp_audio_frame) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ avio_seek(pb, p->buffer_size, SEEK_SET);
+
+ read_table(s, p->blocks_count_table, p->nb_frames);
+ read_table(s, p->frames_offset_table, p->nb_frames);
+ read_table(s, p->blocks_offset_table, p->frame_blks);
+
+ p->got_audio = 0;
+ p->current_frame = 0;
+ p->current_frame_block = 0;
+
+ avio_seek(pb, p->start_offset, SEEK_SET);
+
+ return 0;
+
+fail:
+ read_close(s);
+
+ return ret;
+}
+
+static int read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ PAFDemuxContext *p = s->priv_data;
+ AVIOContext *pb = s->pb;
+ uint32_t count, offset;
+ int size, i;
+
+ if (p->current_frame >= p->nb_frames)
+ return AVERROR_EOF;
+
+ if (url_feof(pb))
+ return AVERROR_EOF;
+
+ if (p->got_audio) {
+ if (av_new_packet(pkt, p->audio_size) < 0)
+ return AVERROR(ENOMEM);
+
+ memcpy(pkt->data, p->temp_audio_frame, p->audio_size);
+ pkt->stream_index = 1;
+ pkt->duration = PAF_SOUND_SAMPLES * p->audio_size / PAF_SOUND_FRAME_SIZE;
+ p->got_audio = 0;
+ return pkt->size;
+ }
+
+ count = (p->current_frame == 0) ? p->preload_count : p->blocks_count_table[p->current_frame - 1];
+ for (i = 0; i < count; i++) {
+ if (p->current_frame_block >= p->frame_blks)
+ return AVERROR_INVALIDDATA;
+
+ offset = p->blocks_offset_table[p->current_frame_block] & ~(1 << 31);
+ if (p->blocks_offset_table[p->current_frame_block] & (1 << 31)) {
+ if (offset + p->buffer_size > p->audio_size)
+ return AVERROR_INVALIDDATA;
+
+ avio_read(pb, p->audio_frame + offset, p->buffer_size);
+ if (offset == (p->max_audio_blks - 2) * p->buffer_size) {
+ memcpy(p->temp_audio_frame, p->audio_frame, p->audio_size);
+ p->got_audio = 1;
+ }
+ } else {
+ if (offset + p->buffer_size > p->video_size)
+ return AVERROR_INVALIDDATA;
+
+ avio_read(pb, p->video_frame + offset, p->buffer_size);
+ }
+ p->current_frame_block++;
+ }
+
+ size = p->video_size - p->frames_offset_table[p->current_frame];
+ if (size < 0)
+ return AVERROR_INVALIDDATA;
+
+ if (av_new_packet(pkt, size) < 0)
+ return AVERROR(ENOMEM);
+
+ pkt->stream_index = 0;
+ pkt->duration = 1;
+ memcpy(pkt->data, p->video_frame + p->frames_offset_table[p->current_frame], size);
+ p->current_frame++;
+
+ return pkt->size;
+}
+
+AVInputFormat ff_paf_demuxer = {
+ .name = "paf",
+ .long_name = NULL_IF_CONFIG_SMALL("Amazing Studio Packed Animation File"),
+ .priv_data_size = sizeof(PAFDemuxContext),
+ .read_probe = read_probe,
+ .read_header = read_header,
+ .read_packet = read_packet,
+ .read_close = read_close,
+};
--
1.7.7
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