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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <err.h>
#include "mem.h"
#include "mtmd.h"
#include "mtmd-helper.h"
#include "llama.h"
#define N_CTX 1024
#define N_THREADS 4
#define MODEL_PATH "model.gguf"
#define MMPROJ_PATH "mmproj.gguf"
#define PROMPT \
"These are consecutive frames of a video." \
"Describe what happens."
static char * build_prompt(struct llama_model *model, int n_images)
{
int n, i;
const char *tmpl, *marker;
char *content, *buf;
size_t content_len, buf_len;
struct llama_chat_message msg;
tmpl = llama_model_chat_template(model, NULL);
if (!tmpl) {
fprintf(stderr, "Failed to load chat template\n");
return NULL;
}
marker = mtmd_default_marker();
if (!marker) {
fprintf(stderr, "Null default media marker\n");
return NULL;
}
content_len = n_images * (strlen(marker) + 1) + strlen(PROMPT) + 1;
content = MALLOC(content_len);
content[0] = '\0';
for (i = 0; i < n_images; i++) {
strcat(content, marker); /* Media marker string <__media__>*/
strcat(content, "\n");
}
strcat(content, PROMPT);
msg.role = "user";
msg.content = content;
n = llama_chat_apply_template(tmpl, &msg, 1, true, NULL, 0);
if (n < 0) {
fprintf(stderr, "Chat template size check failed\n");
free(content);
}
buf_len = n + 1;
buf = MALLOC(buf_len);
n = llama_chat_apply_template(tmpl, &msg, 1, true, buf, buf_len);
if (n < 0) {
fprintf(stderr, "Failed to apply chat template\n");
free(content);
}
buf[n] = '\0';
return buf;
}
int main(int argc, char *argv[])
{
int n_images;
const char *prompt;
const struct llama_vocab *vocab;
struct llama_model *model = NULL;
struct llama_model_params mparams;
struct llama_context *ctx = NULL;
struct llama_context_params cparams;
struct llama_sampler *smpl = NULL;
struct llama_sampler_chain_params sparams;
int i;
mtmd_input_chunks *chunks;
mtmd_bitmap **bitmaps = NULL;
struct mtmd_context *mctx = NULL;
struct mtmd_context_params mtparams;
struct mtmd_helper_init_opt init_opt;
struct mtmd_helper_bitmap_wrapper wrapper;
n_images = argc - 1;
if (n_images < 1) {
fprintf(stderr, "Usage: %s image1 [image2 ...]\n", argv[0]);
return 1;
}
llama_backend_init();
mparams = llama_model_default_params();
mparams.n_gpu_layers = 0; /* force all layers onto CPU */
mparams.load_mode = LLAMA_LOAD_MODE_MLOCK;
model = llama_model_load_from_file(MODEL_PATH, mparams);
if (!model) {
fprintf(stderr, "Failed to load model: %s\n", MODEL_PATH);
goto cleanup;
}
if (!llama_model_chat_template(model, NULL))
warnx("No embedded chat template");
cparams = llama_context_default_params();
cparams.n_ctx = N_CTX;
cparams.n_threads = N_THREADS;
cparams.n_threads_batch = N_THREADS;
ctx = llama_init_from_model(model, cparams);
if (!ctx) {
fprintf(stderr, "Failed to initialize context\n");
goto cleanup;
}
vocab = llama_model_get_vocab(model);
if (!vocab) {
fprintf(stderr, "Failed to initialize context\n");
goto cleanup;
}
sparams = llama_sampler_chain_default_params();
smpl = llama_sampler_chain_init(sparams);
if (!smpl) {
fprintf(stderr, "Failed to initialize sampler\n");
goto cleanup;
}
llama_sampler_chain_add(smpl,
llama_sampler_init_penalties(
llama_vocab_n_tokens(vocab),
64, /* last_n: lookback window */
1.1f, /* repeat_penalty */
0.0f, /* frequency_penalty */
0.0f /* presence_penalty */
)
);
llama_sampler_chain_add(smpl, llama_sampler_init_greedy());
mtparams = mtmd_context_params_default();
mtparams.use_gpu = false;
mtparams.n_threads = N_THREADS;
mctx = mtmd_init_from_file(MMPROJ_PATH, model, mtparams);
if (!mctx) {
fprintf(stderr, "Failed to load mmproj: %s\n", MMPROJ_PATH);
goto cleanup;
}
init_opt = mtmd_helper_init_opt_default();
bitmaps = CALLOC(n_images, sizeof(*bitmaps));
for (i = 0; i < n_images; i++) {
wrapper = mtmd_helper_bitmap_init_from_file(
mctx,
argv[i + 1],
false,
init_opt);
bitmaps[i] = wrapper.bitmap;
if (!bitmaps[i]) {
fprintf(stderr, "Failed to load image: %s\n", argv[i + 1]);
goto cleanup;
}
}
prompt = build_prompt(model, n_images);
if (!prompt) {
fprintf(stderr, "Prompt error");
goto cleanup;
}
printf("Init success\n");
cleanup:
if (bitmaps) {
for (i = 0; bitmaps[i]; i++)
mtmd_bitmap_free(bitmaps[i]);
free(bitmaps);
}
if (smpl)
llama_sampler_free(smpl);
if (ctx)
llama_free(ctx);
if (model)
llama_model_free(model);
llama_backend_free();
return 0;
}
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