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author Miodrag Milanovic <mmicko@gmail.com>2015-11-08 12:56:12 +0100
committer Miodrag Milanovic <mmicko@gmail.com>2015-11-08 12:56:12 +0100
commit7c19aac60e12d6f5ea301bdb34d7826a01e0b06f (patch)
treef310d86aa2c6bfc19d115307dedde4eb0cd52dad /src/lib/formats/apf_apt.c
parenta57b46ae933badd7441ce1644711dbb851e2b504 (diff)
Rename *.c -> *.cpp in our source (nw)
Diffstat (limited to 'src/lib/formats/apf_apt.c')
-rw-r--r--src/lib/formats/apf_apt.c252
1 files changed, 0 insertions, 252 deletions
diff --git a/src/lib/formats/apf_apt.c b/src/lib/formats/apf_apt.c
deleted file mode 100644
index b609a109ef6..00000000000
--- a/src/lib/formats/apf_apt.c
+++ /dev/null
@@ -1,252 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders: Original author, Robbbert
-/********************************************************************
-
-Support for APF Imagination Machine cassette images
-
-CPF and CAS images consist of the screen and then the program,
-and are exactly 1E00 bytes in length.
-
-APT images are much the same, however it includes a series of FF
-bytes as a header. There's also a large amount of what seems to
-be rubbish at the end.
-
-APW images are not emulated, and are used by the closed-source
-emulator APF_EMUW. Quote: "They allow recording in special formats
-and recording audio. They are audio files sampled at 11025 Hz 8 bits
-unsigned mono, without header. The bit 1 stores the state of the
-recording head."
-
-S19 images are not emulated, however there's no need to as they
-are only used to hold cartridge hex dumps.
-
-TXT images can be copy/pasted by using the Paste menu option.
-
-Each byte after conversion becomes bit 7,6,etc to 0, There are
-no start or stop bits.
-
-An actual tape consists of 6 sections
-a. silence until you press Enter (no offset)
-b. 11secs of high bits then 1 low bit
-c. The screen ram
-d. The program ram
-e. A checksum byte (8-bit addition)
-
-********************************************************************/
-
-#include <assert.h>
-
-#include "formats/apf_apt.h"
-
-#define WAVEENTRY_LOW -32768
-#define WAVEENTRY_HIGH 32767
-
-/* frequency of wave */
-#define APF_WAV_FREQUENCY 8000
-
-/* 500 microsecond of bit 0 and 1000 microsecond of bit 1 */
-static int apf_image_size;
-
-static int apf_put_samples(INT16 *buffer, int sample_pos, int count, int level)
-{
- if (buffer)
- {
- for (int i=0; i<count; i++)
- buffer[sample_pos + i] = level;
- }
-
- return count;
-}
-
-static int apf_output_bit(INT16 *buffer, int sample_pos, bool bit)
-{
- int samples = 0;
-
- if (bit)
- {
- samples += apf_put_samples(buffer, sample_pos + samples, 4, WAVEENTRY_HIGH);
- samples += apf_put_samples(buffer, sample_pos + samples, 4, WAVEENTRY_LOW);
- }
- else
- {
- samples += apf_put_samples(buffer, sample_pos + samples, 2, WAVEENTRY_HIGH);
- samples += apf_put_samples(buffer, sample_pos + samples, 2, WAVEENTRY_LOW);
- }
-
- return samples;
-}
-
-static int apf_output_byte(INT16 *buffer, int sample_pos, UINT8 byte)
-{
- int samples = 0;
- UINT8 i;
-
- /* data */
- for (i = 0; i<8; i++)
- samples += apf_output_bit (buffer, sample_pos + samples, (byte >> (7-i)) & 1);
-
- return samples;
-}
-
-static int apf_apt_handle_cassette(INT16 *buffer, const UINT8 *bytes)
-{
- UINT32 sample_count = 0;
- UINT32 i;
- UINT8 cksm = 0;
- UINT32 temp = 0;
-
- // silence
- sample_count += apf_put_samples(buffer, 0, 12000, 0);
-
- for (i=0; i<apf_image_size; i++)
- {
- sample_count += apf_output_byte(buffer, sample_count, bytes[i]);
- if (bytes[i]==0xfe)
- {
- temp = i+1;
- i = apf_image_size;
- }
- }
-
- /* data */
- for (i= temp; i<(temp+0x1e00); i++)
- {
- cksm += bytes[i];
- sample_count += apf_output_byte(buffer, sample_count, bytes[i]);
- }
-
- /* checksum byte */
- sample_count += apf_output_byte(buffer, sample_count, cksm);
-
- return sample_count;
-}
-
-static int apf_cpf_handle_cassette(INT16 *buffer, const UINT8 *bytes)
-{
- UINT32 sample_count = 0;
- UINT32 i;
- UINT8 cksm = 0;
-
- // silence
- sample_count += apf_put_samples(buffer, 0, 12000, 0);
-
- /* start */
- for (i=0; i<10000; i++)
- sample_count += apf_output_bit(buffer, sample_count, 1);
-
- sample_count += apf_output_bit(buffer, sample_count, 0);
-
- /* data */
- for (i=0; i<apf_image_size; i++)
- {
- cksm += bytes[i];
- sample_count += apf_output_byte(buffer, sample_count, bytes[i]);
- }
-
- /* checksum byte */
- sample_count += apf_output_byte(buffer, sample_count, cksm);
-
- return sample_count;
-}
-
-
-/*******************************************************************
- Generate samples for the tape image
-********************************************************************/
-
-static int apf_apt_fill_wave(INT16 *buffer, int length, UINT8 *bytes)
-{
- return apf_apt_handle_cassette(buffer, bytes);
-}
-
-static int apf_cpf_fill_wave(INT16 *buffer, int length, UINT8 *bytes)
-{
- return apf_cpf_handle_cassette(buffer, bytes);
-}
-
-/*******************************************************************
- Calculate the number of samples needed for this tape image
-********************************************************************/
-
-static int apf_apt_calculate_size_in_samples(const UINT8 *bytes, int length)
-{
- apf_image_size = length;
-
- return apf_apt_handle_cassette(NULL, bytes);
-}
-
-static int apf_cpf_calculate_size_in_samples(const UINT8 *bytes, int length)
-{
- apf_image_size = length;
-
- return apf_cpf_handle_cassette(NULL, bytes);
-}
-
-//*********************************************************************************
-
-static const struct CassetteLegacyWaveFiller apf_cpf_fill_intf =
-{
- apf_cpf_fill_wave, /* fill_wave */
- -1, /* chunk_size */
- 0, /* chunk_samples */
- apf_cpf_calculate_size_in_samples, /* chunk_sample_calc */
- APF_WAV_FREQUENCY, /* sample_frequency */
- 0, /* header_samples */
- 0 /* trailer_samples */
-};
-
-static casserr_t apf_cpf_identify(cassette_image *cassette, struct CassetteOptions *opts)
-{
- return cassette_legacy_identify(cassette, opts, &apf_cpf_fill_intf);
-}
-
-static casserr_t apf_cpf_load(cassette_image *cassette)
-{
- return cassette_legacy_construct(cassette, &apf_cpf_fill_intf);
-}
-
-static const struct CassetteFormat apf_cpf_format =
-{
- "cas,cpf",
- apf_cpf_identify,
- apf_cpf_load,
- NULL
-};
-
-//*********************************************************************************
-
-static const struct CassetteLegacyWaveFiller apf_apt_fill_intf =
-{
- apf_apt_fill_wave, /* fill_wave */
- -1, /* chunk_size */
- 0, /* chunk_samples */
- apf_apt_calculate_size_in_samples, /* chunk_sample_calc */
- APF_WAV_FREQUENCY, /* sample_frequency */
- 0, /* header_samples */
- 0 /* trailer_samples */
-};
-
-static casserr_t apf_apt_identify(cassette_image *cassette, struct CassetteOptions *opts)
-{
- return cassette_legacy_identify(cassette, opts, &apf_apt_fill_intf);
-}
-
-static casserr_t apf_apt_load(cassette_image *cassette)
-{
- return cassette_legacy_construct(cassette, &apf_apt_fill_intf);
-}
-
-static const struct CassetteFormat apf_apt_format =
-{
- "apt",
- apf_apt_identify,
- apf_apt_load,
- NULL
-};
-
-//*********************************************************************************
-
-CASSETTE_FORMATLIST_START(apf_cassette_formats)
- CASSETTE_FORMAT(apf_cpf_format)
- CASSETTE_FORMAT(apf_apt_format)
-CASSETTE_FORMATLIST_END