+++ /dev/null
-/*
- * RAW encoder and decoder
- * Copyright (c) 2001 Fabrice Bellard.
- *
- * 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
- */
-#include "avformat.h"
-
-/* simple formats */
-static int raw_write_header(struct AVFormatContext *s)
-{
- return 0;
-}
-
-static int raw_write_packet(struct AVFormatContext *s, int stream_index,
- const uint8_t *buf, int size, int64_t pts)
-{
- put_buffer(&s->pb, buf, size);
- put_flush_packet(&s->pb);
- return 0;
-}
-
-static int raw_write_trailer(struct AVFormatContext *s)
-{
- return 0;
-}
-
-/* raw input */
-static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
-{
- AVStream *st;
- int id;
-
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
- if (ap) {
- id = s->iformat->value;
- if (id == CODEC_ID_RAWVIDEO) {
- st->codec.codec_type = CODEC_TYPE_VIDEO;
- } else {
- st->codec.codec_type = CODEC_TYPE_AUDIO;
- }
- st->codec.codec_id = id;
-
- switch(st->codec.codec_type) {
- case CODEC_TYPE_AUDIO:
- st->codec.sample_rate = ap->sample_rate;
- st->codec.channels = ap->channels;
- break;
- case CODEC_TYPE_VIDEO:
- st->codec.frame_rate = ap->frame_rate;
- st->codec.frame_rate_base = ap->frame_rate_base;
- st->codec.width = ap->width;
- st->codec.height = ap->height;
- st->codec.pix_fmt = ap->pix_fmt;
- break;
- default:
- return -1;
- }
- } else {
- return -1;
- }
- return 0;
-}
-
-#define RAW_PACKET_SIZE 1024
-
-static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
- int ret, size;
- // AVStream *st = s->streams[0];
-
- size= RAW_PACKET_SIZE;
-
- if (av_new_packet(pkt, size) < 0)
- return -EIO;
-
- pkt->stream_index = 0;
- ret = get_buffer(&s->pb, pkt->data, size);
- if (ret <= 0) {
- av_free_packet(pkt);
- return -EIO;
- }
- /* note: we need to modify the packet size here to handle the last
- packet */
- pkt->size = ret;
- return ret;
-}
-
-static int raw_read_close(AVFormatContext *s)
-{
- return 0;
-}
-
-/* ac3 read */
-static int ac3_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
-{
- AVStream *st;
-
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
-
- st->codec.codec_type = CODEC_TYPE_AUDIO;
- st->codec.codec_id = CODEC_ID_AC3;
- /* the parameters will be extracted from the compressed bitstream */
- return 0;
-}
-
-/* mpeg1/h263 input */
-static int video_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
-{
- AVStream *st;
-
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
-
- st->codec.codec_type = CODEC_TYPE_VIDEO;
- st->codec.codec_id = s->iformat->value;
- /* for mjpeg, specify frame rate */
- /* for mpeg4 specify it too (most mpeg4 streams dont have the fixed_vop_rate set ...)*/
- if (st->codec.codec_id == CODEC_ID_MJPEG || st->codec.codec_id == CODEC_ID_MPEG4) {
- if (ap) {
- st->codec.frame_rate = ap->frame_rate;
- st->codec.frame_rate_base = ap->frame_rate_base;
- } else {
- st->codec.frame_rate = 25;
- st->codec.frame_rate_base = 1;
- }
- }
- return 0;
-}
-
-#define SEQ_START_CODE 0x000001b3
-#define GOP_START_CODE 0x000001b8
-#define PICTURE_START_CODE 0x00000100
-
-/* XXX: improve that by looking at several start codes */
-static int mpegvideo_probe(AVProbeData *p)
-{
- int code;
- const uint8_t *d;
-
- /* we search the first start code. If it is a sequence, gop or
- picture start code then we decide it is an mpeg video
- stream. We do not send highest value to give a chance to mpegts */
- /* NOTE: the search range was restricted to avoid too many false
- detections */
-
- if (p->buf_size < 6)
- return 0;
- d = p->buf;
- code = (d[0] << 24) | (d[1] << 16) | (d[2] << 8) | (d[3]);
- if ((code & 0xffffff00) == 0x100) {
- if (code == SEQ_START_CODE ||
- code == GOP_START_CODE ||
- code == PICTURE_START_CODE)
- return 50 - 1;
- else
- return 0;
- }
- return 0;
-}
-
-static int h263_probe(AVProbeData *p)
-{
- int code;
- const uint8_t *d;
-
- if (p->buf_size < 6)
- return 0;
- d = p->buf;
- code = (d[0] << 14) | (d[1] << 6) | (d[2] >> 2);
- if (code == 0x20) {
- return 50;
- }
- return 0;
-}
-
-AVInputFormat ac3_iformat = {
- "ac3",
- "raw ac3",
- 0,
- NULL,
- ac3_read_header,
- raw_read_packet,
- raw_read_close,
- .extensions = "ac3",
-};
-
-AVOutputFormat ac3_oformat = {
- "ac3",
- "raw ac3",
- "audio/x-ac3",
- "ac3",
- 0,
- CODEC_ID_AC3,
- 0,
- raw_write_header,
- raw_write_packet,
- raw_write_trailer,
-};
-
-AVInputFormat h263_iformat = {
- "h263",
- "raw h263",
- 0,
- h263_probe,
- video_read_header,
- raw_read_packet,
- raw_read_close,
-// .extensions = "h263", //FIXME remove after writing mpeg4_probe
- .value = CODEC_ID_H263,
-};
-
-AVOutputFormat h263_oformat = {
- "h263",
- "raw h263",
- "video/x-h263",
- "h263",
- 0,
- 0,
- CODEC_ID_H263,
- raw_write_header,
- raw_write_packet,
- raw_write_trailer,
-};
-
-AVInputFormat m4v_iformat = {
- "m4v",
- "raw MPEG4 video format",
- 0,
- NULL /*mpegvideo_probe*/,
- video_read_header,
- raw_read_packet,
- raw_read_close,
- .extensions = "m4v", //FIXME remove after writing mpeg4_probe
- .value = CODEC_ID_MPEG4,
-};
-
-AVOutputFormat m4v_oformat = {
- "m4v",
- "raw MPEG4 video format",
- NULL,
- "m4v",
- 0,
- CODEC_ID_NONE,
- CODEC_ID_MPEG4,
- raw_write_header,
- raw_write_packet,
- raw_write_trailer,
-};
-
-AVInputFormat h264_iformat = {
- "h264",
- "raw H264 video format",
- 0,
- NULL /*mpegvideo_probe*/,
- video_read_header,
- raw_read_packet,
- raw_read_close,
- .extensions = "h26l,h264", //FIXME remove after writing mpeg4_probe
- .value = CODEC_ID_H264,
-};
-
-AVOutputFormat h264_oformat = {
- "h264",
- "raw H264 video format",
- NULL,
- "h264",
- 0,
- CODEC_ID_NONE,
- CODEC_ID_H264,
- raw_write_header,
- raw_write_packet,
- raw_write_trailer,
-};
-
-AVInputFormat mpegvideo_iformat = {
- "mpegvideo",
- "MPEG video",
- 0,
- mpegvideo_probe,
- video_read_header,
- raw_read_packet,
- raw_read_close,
- .value = CODEC_ID_MPEG1VIDEO,
-};
-
-AVOutputFormat mpeg1video_oformat = {
- "mpeg1video",
- "MPEG video",
- "video/x-mpeg",
- "mpg,mpeg",
- 0,
- 0,
- CODEC_ID_MPEG1VIDEO,
- raw_write_header,
- raw_write_packet,
- raw_write_trailer,
-};
-
-AVInputFormat mjpeg_iformat = {
- "mjpeg",
- "MJPEG video",
- 0,
- NULL,
- video_read_header,
- raw_read_packet,
- raw_read_close,
- .extensions = "mjpg,mjpeg",
- .value = CODEC_ID_MJPEG,
-};
-
-AVOutputFormat mjpeg_oformat = {
- "mjpeg",
- "MJPEG video",
- "video/x-mjpeg",
- "mjpg,mjpeg",
- 0,
- 0,
- CODEC_ID_MJPEG,
- raw_write_header,
- raw_write_packet,
- raw_write_trailer,
-};
-
-/* pcm formats */
-
-#define PCMDEF(name, long_name, ext, codec) \
-AVInputFormat pcm_ ## name ## _iformat = {\
- #name,\
- long_name,\
- 0,\
- NULL,\
- raw_read_header,\
- raw_read_packet,\
- raw_read_close,\
- .extensions = ext,\
- .value = codec,\
-};\
-\
-AVOutputFormat pcm_ ## name ## _oformat = {\
- #name,\
- long_name,\
- NULL,\
- ext,\
- 0,\
- codec,\
- 0,\
- raw_write_header,\
- raw_write_packet,\
- raw_write_trailer,\
-};
-
-#ifdef WORDS_BIGENDIAN
-#define BE_DEF(s) s
-#define LE_DEF(s) NULL
-#else
-#define BE_DEF(s) NULL
-#define LE_DEF(s) s
-#endif
-
-
-PCMDEF(s16le, "pcm signed 16 bit little endian format",
- LE_DEF("sw"), CODEC_ID_PCM_S16LE)
-
-PCMDEF(s16be, "pcm signed 16 bit big endian format",
- BE_DEF("sw"), CODEC_ID_PCM_S16BE)
-
-PCMDEF(u16le, "pcm unsigned 16 bit little endian format",
- LE_DEF("uw"), CODEC_ID_PCM_U16LE)
-
-PCMDEF(u16be, "pcm unsigned 16 bit big endian format",
- BE_DEF("uw"), CODEC_ID_PCM_U16BE)
-
-PCMDEF(s8, "pcm signed 8 bit format",
- "sb", CODEC_ID_PCM_S8)
-
-PCMDEF(u8, "pcm unsigned 8 bit format",
- "ub", CODEC_ID_PCM_U8)
-
-PCMDEF(mulaw, "pcm mu law format",
- "ul", CODEC_ID_PCM_MULAW)
-
-PCMDEF(alaw, "pcm A law format",
- "al", CODEC_ID_PCM_ALAW)
-
-static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
- int packet_size, ret, width, height;
- AVStream *st = s->streams[0];
-
- width = st->codec.width;
- height = st->codec.height;
-
- packet_size = avpicture_get_size(st->codec.pix_fmt, width, height);
- if (packet_size < 0)
- av_abort();
-
- if (av_new_packet(pkt, packet_size) < 0)
- return -EIO;
-
- pkt->stream_index = 0;
-#if 0
- /* bypass buffered I/O */
- ret = url_read(url_fileno(&s->pb), pkt->data, pkt->size);
-#else
- ret = get_buffer(&s->pb, pkt->data, pkt->size);
-#endif
- if (ret != pkt->size) {
- av_free_packet(pkt);
- return -EIO;
- } else {
- return 0;
- }
-}
-
-AVInputFormat rawvideo_iformat = {
- "rawvideo",
- "raw video format",
- 0,
- NULL,
- raw_read_header,
- rawvideo_read_packet,
- raw_read_close,
- .extensions = "yuv",
- .value = CODEC_ID_RAWVIDEO,
-};
-
-AVOutputFormat rawvideo_oformat = {
- "rawvideo",
- "raw video format",
- NULL,
- "yuv",
- 0,
- CODEC_ID_NONE,
- CODEC_ID_RAWVIDEO,
- raw_write_header,
- raw_write_packet,
- raw_write_trailer,
-};
-
-static int null_write_packet(struct AVFormatContext *s,
- int stream_index,
- const uint8_t *buf, int size, int64_t pts)
-{
- return 0;
-}
-
-AVOutputFormat null_oformat = {
- "null",
- "null video format",
- NULL,
- NULL,
- 0,
-#ifdef WORDS_BIGENDIAN
- CODEC_ID_PCM_S16BE,
-#else
- CODEC_ID_PCM_S16LE,
-#endif
- CODEC_ID_RAWVIDEO,
- raw_write_header,
- null_write_packet,
- raw_write_trailer,
- .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE,
-};
-
-int raw_init(void)
-{
- av_register_input_format(&ac3_iformat);
- av_register_output_format(&ac3_oformat);
-
- av_register_input_format(&h263_iformat);
- av_register_output_format(&h263_oformat);
-
- av_register_input_format(&m4v_iformat);
- av_register_output_format(&m4v_oformat);
-
- av_register_input_format(&h264_iformat);
- av_register_output_format(&h264_oformat);
-
- av_register_input_format(&mpegvideo_iformat);
- av_register_output_format(&mpeg1video_oformat);
-
- av_register_input_format(&mjpeg_iformat);
- av_register_output_format(&mjpeg_oformat);
-
- av_register_input_format(&pcm_s16le_iformat);
- av_register_output_format(&pcm_s16le_oformat);
- av_register_input_format(&pcm_s16be_iformat);
- av_register_output_format(&pcm_s16be_oformat);
- av_register_input_format(&pcm_u16le_iformat);
- av_register_output_format(&pcm_u16le_oformat);
- av_register_input_format(&pcm_u16be_iformat);
- av_register_output_format(&pcm_u16be_oformat);
- av_register_input_format(&pcm_s8_iformat);
- av_register_output_format(&pcm_s8_oformat);
- av_register_input_format(&pcm_u8_iformat);
- av_register_output_format(&pcm_u8_oformat);
- av_register_input_format(&pcm_mulaw_iformat);
- av_register_output_format(&pcm_mulaw_oformat);
- av_register_input_format(&pcm_alaw_iformat);
- av_register_output_format(&pcm_alaw_oformat);
-
- av_register_input_format(&rawvideo_iformat);
- av_register_output_format(&rawvideo_oformat);
-
- av_register_output_format(&null_oformat);
- return 0;
-}
projects / synfig.git / blobdiff