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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#include <avdec_private.h>
#include <stdlib.h>
#define AUDIO_ID 0
#define VIDEO_ID 1
typedef struct
{
uint32_t signature;
uint32_t max_video_frame_size;
uint16_t video_width;
uint16_t video_height;
uint32_t samplerate;
uint8_t bits_per_sample;
uint8_t stereo;
uint16_t max_audio_frame_size;
} file_header_t;
static int read_file_header(bgav_input_context_t * input,
file_header_t * ret)
{
return bgav_input_read_32_le(input, &ret->signature) &&
bgav_input_read_32_le(input, &ret->max_video_frame_size) &&
bgav_input_read_16_le(input, &ret->video_width) &&
bgav_input_read_16_le(input, &ret->video_height) &&
bgav_input_read_32_le(input, &ret->samplerate) &&
bgav_input_read_data(input, &ret->bits_per_sample, 1) &&
bgav_input_read_data(input, &ret->stereo, 1) &&
bgav_input_read_16_le(input, &ret->max_audio_frame_size);
}
#if 0
static void dump_file_header(file_header_t * fh)
{
bgav_dprintf("Delphine CIN file header\n");
bgav_dprintf(" signature: %08x\n", fh->signature);
bgav_dprintf(" max_video_frame_size: %d\n", fh->max_video_frame_size);
bgav_dprintf(" video_width: %d\n", fh->video_width);
bgav_dprintf(" video_height: %d\n", fh->video_height);
bgav_dprintf(" samplerate: %d\n", fh->samplerate);
bgav_dprintf(" bits_per_sample: %d\n", fh->bits_per_sample);
bgav_dprintf(" stereo: %d\n", fh->stereo);
bgav_dprintf(" max_audio_frame_size: %d\n", fh->max_audio_frame_size);
}
#endif
typedef struct
{
uint8_t audio_type;
uint8_t video_type;
uint16_t num_palette_colors;
uint32_t video_size;
uint32_t audio_size;
uint32_t marker;
} frame_header_t;
static int read_frame_header(bgav_input_context_t * input, frame_header_t * frame_header)
{
return
bgav_input_read_data(input, &frame_header->video_type, 1) &&
bgav_input_read_data(input, &frame_header->audio_type, 1) &&
bgav_input_read_16_le(input, &frame_header->num_palette_colors) &&
bgav_input_read_32_le(input, &frame_header->video_size) &&
bgav_input_read_32_le(input, &frame_header->audio_size) &&
bgav_input_read_32_le(input, &frame_header->marker);
}
#if 0
static void dump_frame_header(frame_header_t * frame_header)
{
bgav_dprintf("Delphine CIN frame header\n");
bgav_dprintf(" video_type: %d\n", frame_header->video_type);
bgav_dprintf(" audio_type: %d\n", frame_header->audio_type);
bgav_dprintf(" num_palette_colors: %d\n", frame_header->num_palette_colors);
bgav_dprintf(" video_size: %d\n", frame_header->video_size);
bgav_dprintf(" audio_size: %d\n", frame_header->audio_size);
bgav_dprintf(" marker: %08x\n", frame_header->marker);
}
#endif
#define PROBE_SIZE 18
static int probe_dsicin(bgav_input_context_t * input)
{
uint8_t data[PROBE_SIZE];
uint32_t signature;
if(bgav_input_get_data(input, data, PROBE_SIZE) < PROBE_SIZE)
return 0;
signature = GAVL_PTR_2_32LE(&data[0]);
if(signature != 0x55AA0000)
return 0;
if(data[16] > 16) // > 16 bits per sample
return 0;
return 1;
}
static int open_dsicin(bgav_demuxer_context_t * ctx)
{
bgav_stream_t * s;
file_header_t fh;
if(!read_file_header(ctx->input, &fh))
return 0;
// dump_file_header(&fh);
ctx->tt = bgav_track_table_create(1);
/* Set up video stream */
s = bgav_track_add_video_stream(ctx->tt->cur, ctx->opt);
s->data.video.format->image_width = fh.video_width;
s->data.video.format->image_height = fh.video_height;
s->data.video.format->frame_width = fh.video_width;
s->data.video.format->frame_height = fh.video_height;
s->data.video.format->pixel_width = 1;
s->data.video.format->pixel_height = 1;
s->fourcc = BGAV_MK_FOURCC('d','c','i','n');
s->stream_id = VIDEO_ID;
s->data.video.format->timescale = 12;
s->data.video.format->frame_duration = 1;
/* Set up audio stream */
s = bgav_track_add_audio_stream(ctx->tt->cur, ctx->opt);
s->data.audio.format->samplerate = fh.samplerate;
s->data.audio.format->num_channels = 1+fh.stereo;
s->data.audio.bits_per_sample = fh.bits_per_sample;
s->fourcc = BGAV_MK_FOURCC('d','c','i','n');
s->stream_id = AUDIO_ID;
bgav_track_set_format(ctx->tt->cur, "Delphine Software CIN", NULL);
ctx->data_start = ctx->input->position;
ctx->flags |= BGAV_DEMUXER_HAS_DATA_START;
return 1;
}
static int next_packet_dsicin(bgav_demuxer_context_t * ctx)
{
bgav_stream_t * s;
bgav_packet_t * p;
frame_header_t frame_header;
int palette_type, pkt_size;
if(!read_frame_header(ctx->input, &frame_header))
return 0;
// dump_frame_header(&frame_header);
/* Get video frame */
if ((int16_t)frame_header.num_palette_colors < 0)
{
frame_header.num_palette_colors = -(int16_t)frame_header.num_palette_colors;
palette_type = 1;
}
else
{
palette_type = 0;
}
pkt_size = (palette_type + 3) *
frame_header.num_palette_colors + frame_header.video_size;
s = bgav_track_find_stream(ctx, VIDEO_ID);
if(s)
{
p = bgav_stream_get_packet_write(s);
bgav_packet_alloc(p, pkt_size + 4);
p->data[0] = palette_type;
p->data[1] = frame_header.num_palette_colors & 0xFF;
p->data[2] = frame_header.num_palette_colors >> 8;
p->data[3] = frame_header.video_type;
if(bgav_input_read_data(ctx->input, p->data+4, pkt_size) < pkt_size)
return 0;
p->data_size = pkt_size + 4;
p->pts = s->in_position;
bgav_stream_done_packet_write(s, p);
}
else
bgav_input_skip(ctx->input, pkt_size);
if(!frame_header.audio_size)
return 1;
s = bgav_track_find_stream(ctx, AUDIO_ID);
if(s)
{
p = bgav_stream_get_packet_write(s);
bgav_packet_alloc(p, pkt_size + frame_header.audio_size);
if(bgav_input_read_data(ctx->input, p->data, frame_header.audio_size) < frame_header.audio_size)
return 0;
p->data_size = frame_header.audio_size;
bgav_stream_done_packet_write(s, p);
}
else
bgav_input_skip(ctx->input, frame_header.audio_size);
return 1;
}
static void close_dsicin(bgav_demuxer_context_t * ctx)
{
}
const bgav_demuxer_t bgav_demuxer_dsicin =
{
.probe = probe_dsicin,
.open = open_dsicin,
.next_packet = next_packet_dsicin,
// .seek = seek_dsicin,
.close = close_dsicin
};
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